JP2019033789A - Interpersonal wiper and laminated non-fabric for the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a more well-balanced wiper for an interpersonal use, which is further improved in dirt wiping property and uptake property (difficulty in clogging), and is also excellent in skin contact, soft feel and the like. SOLUTION: The intermediate layer includes a laminated non-woven fabric including a surface layer laminated on both sides of the intermediate layer, the intermediate layer contains 80% by mass or more of cellulose-based fibers having a fiber length of less than 10 mm, and the surface layer is a fiber. Contains 80% by mass or more of fibers having a length of 20 mm or more, 40 to 80% by mass of the first cellulose-based fiber; 10 to 40% by mass of the second cellulose-based fiber; and a split type composite fiber and its split type composite. It contains a total of 10 to 40% by mass of ultrafine fibers derived from fibers, the fineness of the first cellulose-based fiber is 1.0 to 5.6 dtex, and the ratio of the fineness of the first cellulose-based fiber to the fineness of the second cellulose-based fiber. An interpersonal wiper having (the fineness of the first cellulose fiber / the fineness of the second cellulose fiber) of 1.2 or more. [Selection diagram] Fig. 1

Description

  The present invention relates to a human wiper used by impregnating a liquid such as moisture, a chemical solution, or a cosmetic, and a laminated nonwoven fabric for a human wiper, and more particularly, a human wiper for moistening or washing human skin, and the like. The present invention relates to a laminated nonwoven fabric for interpersonal wipers.

  2. Description of the Related Art Conventionally, wipers including various nonwoven fabrics including water absorbent fiber webs such as rayon and cotton are known as interpersonal wipers such as wet tissues, disposable towels, and cosmetic sheets. In order to satisfy various properties, laminated nonwoven fabrics have been studied.

  Patent Document 1 is a sheet base material for a wet sheet made of a fiber sheet having a three-layer structure having an intermediate layer between a first layer and a second layer, and the first layer has 30 to 70 weights of split-type composite fibers. % And hydrophilic fiber 30 to 70% by weight, and the split-type composite fiber is split at a split rate of 20 to 80% (see Patent Document 1, Claim 1 etc.). More specifically, Patent Document 1 discloses a first layer and a second layer including 50% of 1.7 dtex cotton and 50% of 3.3 dtex PET / PE split composite fiber, and 1.7 dtex cotton. An intermediate layer of 100% or 100% PET fiber of 1.1 dtex is disclosed (see Patent Document 1 [0082] [Table 2]).

  Patent Document 1 discloses that dirt is effectively scraped off and removed, and even when the liquid is impregnated and held in a stacked state, the movement of the liquid is reduced, and the performance of the liquid can be sufficiently exhibited. Since the liquid is discharged from the sheet in an appropriate amount, it is disclosed that the wiping property of the surface to be wiped is improved (see Patent Document 1 [0008] etc.).

  Patent Document 2 is a non-woven fabric for makeup removal having a three-layer structure in which surface layers are arranged on both the front and back surfaces of an inner layer, and 0.1 to 0.8 dtex ultrafine PET fibers and 5 to 20 are used as raw material fibers for the surface layer. Mixing weight percent acrylic / acetate split fibers and rayon, mixing pulp and rayon as inner layer raw fibers, and hydroentangling the inner layer and surface layer to split the acrylic / acetate split fibers and generate fibrils. A non-woven fabric for makeup removal is disclosed (see Patent Document 2, claims 1 to 3, [0036] [Table 2], etc.).

  Patent Document 2 states that there is no wiping off without damaging the skin, low irritation and good touch without damaging the skin, that the surface layer and the inner layer can be integrated, and that the wiped makeup is applied to the surface layer. (See Patent Documents 2 [0012] to [0013] and [0040] to [0041], etc.).

JP 2006-223454 A JP 2013-209337 A

  However, in recent years, dirt wiping and taking-in properties (hard to clog) have been further improved, good skin feel, soft touch, difficulty of fluffing, retention of liquid such as moisture (or liquid such as water) There is a need for a more well-balanced interpersonal wiper that is also excellent in the property of gradually releasing (hereinafter also referred to as “sustained release”). None of the above-described nonwoven fabrics of Patent Documents 1 and 2 are sufficient in terms of wiping off dirt and taking in (not easily clogged), and the balance with other properties is not necessarily sufficient.

  As a result of intensive studies, the inventors of the interpersonal wiper including a laminated nonwoven fabric including two surface layers on both sides of the intermediate layer, the intermediate layer includes cellulosic short fibers having a fiber length of less than 10 mm, When the surface layer contains 80% by mass or more of fibers having a fiber length of 20 mm or more, and includes two types of cellulosic fibers having a specific relationship with fineness and split-type composite fibers, the surface layer can wipe off dirt and take in The present invention has been completed by finding that it is more difficult to be clogged), has an excellent balance with other properties described above, and is suitable for personal use.

That is, the present invention provides, in one aspect, a personal wiper (hereinafter also referred to as “personal wiper”),
A laminated nonwoven fabric comprising an intermediate layer and two surface layers laminated on both sides of the intermediate layer;
The intermediate layer contains 80% by mass or more of cellulose short fibers having a fiber length of less than 10 mm,
The two surface layers include 80% by mass or more of fibers having a fiber length of 20 mm or more,
40 to 80% by mass of the first cellulosic fiber;
10-40% by weight of the second cellulosic fiber; and
Including 10-40% by mass of the split-type conjugate fiber and the ultrafine fiber derived from the split-type conjugate fiber,
The fineness of the first cellulosic fiber is 1.0 to 5.6 dtex,
The ratio of the fineness of the first cellulosic fiber to the fineness of the second cellulosic fiber (the fineness of the first cellulosic fiber / the fineness of the second cellulosic fiber) is 1.2 or more.

Furthermore, in another aspect, the present invention provides a laminated nonwoven fabric for interpersonal wipers (hereinafter also referred to as “laminated nonwoven fabric for interpersonal wipers”),
An intermediate layer, and two surface layers laminated on both sides of the intermediate layer,
The intermediate layer contains 80% by mass or more of cellulose short fibers having a fiber length of less than 10 mm,
The two surface layers include 80% by mass or more of fibers having a fiber length of 20 mm or more,
40 to 80% by mass of the first cellulosic fiber;
10-40% by weight of the second cellulosic fiber; and
Including 10-40% by mass of the split-type conjugate fiber and the ultrafine fiber derived from the split-type conjugate fiber,
The fineness of the first cellulosic fiber is 1.0 to 5.6 dtex,
The ratio of the fineness of the first cellulosic fiber to the fineness of the second cellulosic fiber (the fineness of the first cellulosic fiber / the fineness of the second cellulosic fiber) is 1.2 or more.

  The interpersonal wiper in the form of the present invention includes a laminated nonwoven fabric including two surface layers on both sides of the intermediate layer, the intermediate layer includes cellulosic short fibers having a fiber length of less than 10 mm, and the surface layer has a fiber length of 20 mm. It contains 80% by mass or more of the fibers described above, and includes two types of cellulosic fibers and split-type composite fibers having a specific relationship in fineness. The interpersonal wiper according to the embodiment of the present invention has improved dirt wiping property and uptake property (difficult to clog), and has a good feeling on the skin, soft touch, difficulty of fluffing, retention of liquids such as moisture (or gradually). Excellent balance with other properties such as release.

1 shows a scanning electron micrograph (50 ×) of the surface of the laminated nonwoven fabric of Example 1. FIG. FIG. 2 shows a scanning electron micrograph (80 ×) of a cross section obtained by cutting the laminated nonwoven fabric of Example 1 along the horizontal direction (CD direction).

The interpersonal wiper in the form of the present invention includes a laminated nonwoven fabric including an intermediate layer and two surface layers laminated on both sides of the intermediate layer,
The intermediate layer contains 80% by mass or more of cellulose short fibers having a fiber length of less than 10 mm,
The two surface layers include 80% by mass or more of fibers having a fiber length of 20 mm or more,
40 to 80% by mass of the first cellulosic fiber;
10-40% by weight of the second cellulosic fiber; and
Including 10-40% by mass of the split-type conjugate fiber and the ultrafine fiber derived from the split-type conjugate fiber,
The fineness of the first cellulosic fiber is 1.0 to 5.6 dtex,
The ratio of the fineness of the first cellulosic fiber to the fineness of the second cellulosic fiber (the fineness of the first cellulosic fiber / the fineness of the second cellulosic fiber) is 1.2 or more.

Furthermore, the laminated nonwoven fabric for interpersonal wipers in the form of the present invention,
An intermediate layer, and two surface layers laminated on both sides of the intermediate layer,
The intermediate layer contains 80% by mass or more of cellulose short fibers having a fiber length of less than 10 mm,
The two surface layers include 80% by mass or more of fibers having a fiber length of 20 mm or more,
40 to 80% by mass of the first cellulosic fiber;
10-40% by weight of the second cellulosic fiber; and
Including 10-40% by mass of the split-type conjugate fiber and the ultrafine fiber derived from the split-type conjugate fiber,
The fineness of the first cellulosic fiber is 1.0 to 5.6 dtex,
The ratio of the fineness of the first cellulosic fiber to the fineness of the second cellulosic fiber (the fineness of the first cellulosic fiber / the fineness of the second cellulosic fiber) is 1.2 or more.

In the interpersonal wiper and laminated nonwoven fabric (hereinafter also referred to as “interpersonal wiper etc.”) in the form of the present invention, the “intermediate layer” includes 80% by mass or more of cellulose short fibers having a fiber length of less than 10 mm, and 85% by mass. It is preferably included, more preferably 90% by mass or more, and particularly preferably 100% by mass.
When the “intermediate layer” contains 80% by mass or more of cellulosic short fibers having a fiber length of less than 10 mm, interpersonal wipers and the like have a low elongation strength, specifically 10% elongation stress, It is preferable because the liquid can be easily retained and the sustained release of the liquid becomes good.

The fiber length of the “cellulosic short fibers” is less than 10 mm, preferably 0.1 to 8 mm, more preferably 0.5 to 6 mm, and particularly preferably 1 to 5 mm.
When the fiber length of the cellulosic short fibers is less than 10 mm, the interpersonal wiper or the like has a low elongation strength, specifically, a large stress at 10% elongation, and it is easy to hold the liquid and gradually release the liquid. This is preferable because the property is improved.

In addition, when the fiber length of the cellulosic short fibers is less than 10 mm, when the surface layer and the intermediate layer are integrated by a fluid flow entanglement treatment method (for example, hydroentanglement treatment), the entanglement property of the cellulosic short fibers The fluid flow energy used for confounding tends to be relatively low. Thereby, the energy of the fluid flow used for the division | segmentation of a division | segmentation type | mold composite fiber can become comparatively large, and a division | segmentation property can become favorable. Moreover, it is preferable because the pressure and energy of the fluid flow can be further reduced, and the touch and feel of the laminated nonwoven fabric can be improved.
Furthermore, when the fiber length of the cellulosic short fibers is less than 10 mm, the confounding property of the cellulosic short fibers is good, and the cellulosic short fibers are likely to be present on the surface of the laminated nonwoven fabric, and the wiping property is good. This is preferable.

The fineness of the “cellulosic short fibers” is preferably 0.1 to 100 dtex, more preferably 1 to 20 dtex, and particularly preferably 2 to 10 dtex.
When the fineness of the cellulosic short fibers is 0.1 to 100 dtex, the strength at low elongation, specifically, the stress at 10% elongation is larger, and the liquid is easy to hold and has a sustained release property of the liquid. This is preferable because it becomes better.

  The “cellulose short fiber” is not particularly limited as long as the interpersonal wiper and the like intended by the present invention can be obtained, and any cellulose short fiber having a fiber length of less than 10 mm should be used. Can do.

As such a cellulose short fiber, for example,
Natural fibers derived from plants such as pulp, cotton, linen, ramie, jute and hemp,
Rayon (viscose rayon) and polynosic obtained by the viscose method; Cupra obtained by the copper ammonia method; and cellulose fiber (solvent-spun cellulose fiber) obtained by the solvent spinning method (Lyocell (registered trademark) and Tencel Registered fiber) etc.)
Examples thereof include cellulose fibers obtained by melt spinning, and semi-synthetic fibers such as acetate fibers. In the present embodiment, one or more cellulose-based short fibers may be arbitrarily selected from these fibers.

  The cellulose-based short fibers are particularly preferably pulp, more preferably contain wood-derived pulp, and more preferably consist of wood-derived pulp. Since wood-derived pulp has a relatively flat shape in the fiber cross section, interpersonal wipers and the like have a low elongation strength, specifically, a greater stress at 10% elongation, and more easily hold liquid. Since sustained-release property becomes better, it is preferable. The wood-derived pulp preferably contains at least one selected from hardwood pulp and softwood pulp.

  The intermediate layer may contain less than 20% by mass of other fibers of “cellulosic short fibers having a fiber length of less than 10 mm”. Such other fibers are not particularly limited as long as the interpersonal wiper intended by the present invention can be obtained. For example, other natural fibers other than cellulose short fibers (wool, silk, etc.) Examples thereof include natural fibers derived from animals), cellulosic fibers having a fiber length of 10 mm or more, and synthetic fibers.

Basis weight of the intermediate layer is preferably 5 to 50 g / ^{m 2,} more preferably from 10 to 40 g / ^{m 2,} and particularly preferably 20 to 30 g / ^{m 2.}
When the basis weight of the intermediate layer is 5 to 50 g / m ² , the confounding property between the constituent fibers of the intermediate layer and the constituent fibers of the surface layer becomes more appropriate. This is preferable because it provides good sexiness or good per skin.

Two surface layers are laminated on both sides of the intermediate layer.
The two “surface layers” each contain 40-80% by weight of the first cellulosic fiber;
10-40% by weight of the second cellulosic fiber; and
It contains 10 to 40% by mass of the split type composite fiber and the ultrafine fiber derived from the split type composite fiber.

The two “surface layers” each comprise 45 to 75% by mass of the first cellulosic fiber;
12-35% by weight of the second cellulosic fiber; and
It is preferable to include 12 to 35% by mass of the split-type conjugate fiber and the ultrafine fiber derived from the split-type conjugate fiber,
50-70% by mass of the first cellulosic fiber;
15-30% by weight of the second cellulosic fiber; and
More preferably, the split composite fiber and the ultrafine fiber derived from the split composite fiber are included in an amount of 15 to 30% by mass,
55-65% by mass of the first cellulosic fiber;
17-25% by weight of second cellulosic fiber; and
It is particularly preferable that the split composite fiber and the ultrafine fiber derived from the split composite fiber are included in an amount of 17 to 25% by mass.

The two “surface layers” each contain 40-80% by weight of the first cellulosic fiber;
10-40% by weight of the second cellulosic fiber; and
When the split composite fiber and the ultrafine fiber derived from the split composite fiber are contained in an amount of 10 to 40% by mass, interpersonal wipers and the like are preferable because the inter-fiber voids of the nonwoven fabric are suitable and the wiping property is improved.

The two surface layers preferably contain 80% by mass or more of fibers having a fiber length of 20 mm or more, more preferably contain 85% by mass or more, still more preferably contain 90% by mass or more, and contain 100% by mass. Is particularly preferred.
When the two surface layers contain 80% by mass or more of fibers having a fiber length of 20 mm or more, an interpersonal wiper or the like can provide a softer tactile sensation or can further suppress fuzz.

The fiber length of the “first cellulosic fiber” is preferably 20 mm or more, more preferably 25 to 75 mm, still more preferably 30 to 65 mm, and particularly preferably 35 to 55 mm. .
When the fiber length of the first cellulosic fiber is 20 mm or more, the interpersonal wiper or the like is preferable because it provides a softer tactile feel or can further suppress fuzz.

The fineness of the “first cellulosic fiber” is 1.0 to 5.6 dtex, preferably 1.2 to 3.5 dtex, more preferably 1.4 to 2.5 dtex. Particularly preferred is .6 to 2.0 dtex.
When the fineness of the first cellulosic fiber is 1.0 to 5.6 dtex, an interpersonal wiper or the like is more preferable in terms of wiping property.

The fiber length of the “second cellulosic fiber” is preferably 20 mm or more, more preferably 25 to 75 mm, still more preferably 30 to 65 mm, and particularly preferably 35 to 55 mm. .
When the fiber length of the second cellulosic fiber is 20 mm or more, the interpersonal wiper or the like is preferable because it has a softer tactile feel or can further suppress fuzz.

The fineness of the “second cellulosic fiber” is preferably 0.3 to 4.0 dtex, more preferably 0.5 to 2.0 dtex, and 0.6 to 1.4 dtex. Even more preferred is 0.8 to 1.1 dtex.
When the fineness of the second cellulosic fiber is 0.3 to 4.0 dtex, an interpersonal wiper or the like is more preferable for wiping off.

Furthermore, the fineness of the first cellulosic fiber is greater than the fineness of the second cellulosic fiber.
The ratio of the fineness of the first cellulosic fiber to the fineness of the second cellulosic fiber (the fineness of the first cellulosic fiber / the fineness of the second cellulosic fiber) is preferably 1.2 or more. The ratio (fineness of the first cellulosic fiber / fineness of the second cellulosic fiber) is more preferably 1.4 or more, and even more preferably 1.6 or more.
The ratio is preferably 4.0 or less, more preferably 3.0 or less, and even more preferably 2.5 or less.
When ratio is 1.2 or more, it is more preferable at the point of wiping off.
When the ratio is 4.0 or less, it is more preferable in terms of wipeability.

  The “first cellulosic fiber” is not particularly limited as long as an interpersonal wiper or the like intended by the present invention can be obtained, and may be a cellulosic fiber having a fineness of 1.0 to 5.6 dtex. Can be used.

As such a first cellulosic fiber, for example,
Natural fibers derived from plants such as cotton, linen, ramie, jute and hemp,
Rayon (viscose rayon) and polynosic obtained by the viscose method; Cupra obtained by the copper ammonia method; and cellulose fiber (solvent-spun cellulose fiber) obtained by the solvent spinning method (Lyocell (registered trademark) and Tencel Registered fiber) etc.)
Examples thereof include cellulose fibers obtained by melt spinning, and semi-synthetic fibers such as acetate fibers. In the present embodiment, the first cellulosic fiber may be arbitrarily selected from one or more of these fibers.
The first cellulosic fibers having a fineness of 1.0 to 5.6 dtex can be used alone or in combination.

  The “second cellulosic fiber” is not particularly limited as long as an interpersonal wiper or the like intended by the present invention can be obtained.

As such a second cellulosic fiber, for example,
Natural fibers derived from plants such as cotton, linen, ramie, jute and hemp,
Rayon (viscose rayon) and polynosic obtained by the viscose method; Cupra obtained by the copper ammonia method; and cellulose fiber (solvent-spun cellulose fiber) obtained by the solvent spinning method (Lyocell (registered trademark) and Tencel Registered fiber) etc.)
Examples thereof include cellulose fibers obtained by melt spinning, and semi-synthetic fibers such as acetate fibers. In the present embodiment, the second cellulosic fiber may be arbitrarily selected from one or more of these fibers.

  The second cellulosic fibers can be used alone or in combination.

  Each of the first cellulosic fiber and the second cellulosic fiber preferably contains at least one selected from viscose rayon, solvent-spun cellulose fiber, and cotton, and the first cellulosic fiber and the second cellulosic fiber The cellulosic fiber is more preferably viscose rayon. When each of the first cellulosic fiber and the second cellulosic fiber contains at least one selected from viscose rayon, solvent-spun cellulose fiber, and cotton, the interpersonal wiper is more excellent per skin, or moisture It is preferable because it is more excellent in retention of liquids such as.

When the first cellulosic fiber and the second cellulosic fiber have hydrophilicity, the liquid retainability such as moisture becomes better. That the cellulosic fiber has hydrophilicity means that the official moisture content is 5% or more.
The official moisture content is shown in JIS L 0105 (2006).
When the official moisture content is not shown in JIS L 0105 (2006), the official moisture content is calculated based on the following equation.
Official moisture content (%) = [(W−W ′) / W ′] × 100
Here, W means the mass (g) of the fiber in an environment of a temperature of 20 ° C. and a humidity of 65% RH, and W ′ means the mass (g) when the fiber is completely dry. In addition, the mass of the fiber in the environment of temperature 20 degreeC and humidity 65% RH means the mass when a fiber is left to stand in the environment of temperature 20 degreeC and humidity 65% RH, and becomes a fixed mass, and fiber The mass at the time of absolutely dry means the mass when the fiber is left in a hot air drier set at 105 ° C. and becomes a constant mass.

  Specifically, the “split-type conjugate fiber” is formed by dividing at least one component among the constituent components into two or more in the fiber cross section, and at least a part of the constituent components are exposed on the fiber surface, and the exposed portion is There is no particular limitation as long as it has a fiber cross-sectional structure formed continuously in the length direction of the fiber and a personal wiper in the form of the present invention can be obtained.

  The split type composite fiber may be one in which wedge-shaped sections are arranged in a chrysanthemum shape. Alternatively, the split-type composite fiber may be one in which each section is arranged in layers in the fiber cross section. The split-type composite fiber preferably has a wedge shape in terms of wiping property. Further, the split-type composite fiber may be a so-called solid split-type composite fiber that does not have a cavity portion continuous in the length direction when the fiber cross section is observed, or one or more cavities continuous in the length direction. It may be a so-called hollow split type composite fiber having a portion.

The component (resin) constituting the split-type conjugate fiber is not particularly limited as long as the interpersonal wiper of the present invention can be obtained.
Examples of the component (resin) constituting the split type composite fiber include, for example, polyester resins such as polyethylene terephthalate, polybutylene terephthalate, polytrimethylene terephthalate, polyethylene naphthalate, polylactic acid, polybutylene succinate and copolymers thereof; polypropylene , Polyethylene (including high density polyethylene, low density polyethylene, linear low density polyethylene, etc.), polybutene-1, ethylene-propylene copolymer, ethylene-vinyl alcohol copolymer, ethylene-vinyl acetate copolymer, etc. Selected from polyolefin resins such as nylon 6, nylon 12 and nylon 66.

  When using a synthetic resin as a component (resin) constituting the split-type conjugate fiber, it is preferable to use a synthetic resin having lipophilicity. That is, it is preferable to use a split type composite fiber having lipophilicity and an ultrafine fiber derived from the split type composite fiber because lipophilic dirt (lipstick, nail polish, sebum, etc.) can be easily wiped off. The fiber having lipophilicity means that the official moisture content of the fiber is less than 5%. The official moisture content of the split composite fiber and the ultrafine fiber derived from the split composite fiber is more preferably less than 3%, and particularly preferably less than 1%. The official moisture content was explained earlier.

The combination of the component (resin) of the split-type composite fiber is polyethylene terephthalate / polyethylene, polyethylene terephthalate / polypropylene, and polyethylene terephthalate / polyethylene resin such as ethylene-propylene copolymer, polyolefin such as polypropylene / polyethylene. It is preferable that the resin is a polyolefin resin / polyolefin resin (here, the polyethylene is any one of a high density polyethylene, a low density polyethylene, and a linear low density polyethylene, or a combination thereof).
Furthermore, it is more preferable that the combination of the constituent components (resin) of the split-type composite fiber is polyethylene terephthalate / high density polyethylene, polyethylene terephthalate / polypropylene, or polypropylene / high density polyethylene.
In the case of the above-mentioned more preferable combination, it is more preferable because ultrafine fibers are more likely to be produced and the melting of the resin is more easily suppressed in the production of the laminated nonwoven fabric.

The fineness of the split type composite fiber is not particularly limited as long as the interpersonal wiper in the form of the present invention can be obtained. However, when the split type composite fiber is divided into each component (that is, each section has one ultrafine). When it becomes a fiber), it is preferable to produce ultrafine fibers having the following preferred fineness.
In the present embodiment, when the surface layer contains ultrafine fibers as the fibers derived from the split-type composite fibers, the nonwoven fabric becomes more flexible, and the liquid is better due to the fine voids formed between the ultrafine fibers. Can be retained.

  The fineness of the split composite fibers is preferably 1.0 dtex to 4.4 dtex, more preferably 1.5 dtex to 3.5 dtex, and even more preferably 1.7 dtex to 2.5 dtex. When the fineness of the split-type composite fibers is 1.0 dtex to 4.4 dtex, the split-type composite fibers are more likely to produce ultrafine fibers, and interpersonal wipers and the like are preferable because wiping properties are more suitable.

  In addition, the number of divisions into components in the split-type conjugate fiber (that is, the number of sections in the conjugate fiber) is, for example, preferably 4 or more and 32 or less, more preferably 4 or more and 20 or less, Most preferably, it is 6 or more and 10 or less.

The fineness of the ultrafine fiber is preferably 0.05 dtex to 0.60 dtex, more preferably 0.10 dtex to 0.50 dtex, still more preferably 0.15 dtex to 0.40 dtex, and Particularly preferred is 20 dtex to 0.30 dtex.
When the fineness of the ultrafine fibers is 0.05 dtex to 0.60 dtex, it is preferable because wiping properties such as interpersonal wipers become more suitable and fluffing is further suppressed.

  The ratio of the fineness of the second cellulosic fiber to the fineness of the ultrafine fiber derived from the split composite fiber (the fineness of the second cellulosic fiber / the fineness of the ultrafine fiber derived from the split composite fiber) is 1.5 or more. Preferably, it is more preferably 2.0 or more, and further preferably 2.5 or more. The ratio (fineness of the second cellulosic fiber / fineness of the ultrafine fiber derived from the split type composite fiber) is preferably 7.0 or less, more preferably 6.0 or less, and 5.0 or less. More preferably. When the ratio is 1.5 or more, the wiping properties of interpersonal wipers and the like are further improved, which is preferable. It is preferable that the ratio is 7.0 or less because wiping properties such as interpersonal wipers are further improved.

The fiber length of the “split composite fiber and the ultrafine fiber derived from the split composite fiber” is preferably 20 mm or more, more preferably 25 to 75 mm, and even more preferably 30 to 65 mm. It is especially preferable that it is 35-55 mm.
When the fiber length of the “split composite fiber and the ultrafine fiber derived from the split composite fiber” is 20 mm or more, a softer tactile sensation is provided or fuzz is further suppressed, which is more preferable.

  The surface layer may contain less than 20% by mass of other fibers of the “first cellulosic fiber”, “second cellulosic fiber”, and “split-type composite fiber”. Such other fibers are not particularly limited as long as the interpersonal wiper intended by the present invention can be obtained. For example, other natural fibers other than cellulosic fibers (wool, silk, etc.) Examples thereof include natural fibers derived from animals) and synthetic fibers (single fibers, core-sheath composite fibers, etc.) other than split-type composite fibers.

Each basis weight of the surface layer is preferably 5.0~20.0g / ^{m 2,} more preferably from ^{6.0~15.0g / m 2, 7.0~12.5g / m} 2 More preferably, it is 8.0-11.5 g / m < ² >.
When the basis weight of each surface layer is 5.0 to 20 g / m ² , the entanglement between the constituent fibers of the surface layer and the constituent fibers of the intermediate layer becomes more appropriate. It is more preferable because it exhibits sex.

The interpersonal wiper in the form of the present invention includes a laminated nonwoven fabric including an intermediate layer and two surface layers laminated on both sides of the intermediate layer. The laminated nonwoven fabric of the form of the present invention includes an intermediate layer and two surface layers laminated on both sides of the intermediate layer.
At least a part of the split type composite fiber of the surface layer of the laminated nonwoven fabric is split to form ultrafine fibers. Therefore, since it is composed of fibers having a plurality of finenesses, the space between the fibers in the surface layer is suitably adjusted as a personal wiper.

The intermediate layer fibers and the two surface layer fibers are preferably entangled, and the intermediate layer and the two surface layers are preferably integrated by the fiber entanglement. It is thought that by integrating by entanglement of fibers, it is superior in balance such as good feeling on the skin and soft touch.
Furthermore, it is preferable that the fibers are entangled also in the intermediate layer and the surface layer. Due to the entanglement of fibers in the intermediate layer and the surface layer, the interpersonal wiper according to the embodiment of the present invention has improved dirt wiping property, uptake property (difficult to clog), and good skin feel, It is considered that the balance of soft touch is excellent.

Also, in the intermediate layer, there is no location layer where the constituent fibers of the surface layer and the cellulose short fibers of the intermediate layer are mixed due to the entanglement of the constituent fibers of the surface layer and the cellulose short fibers of the intermediate layer. It is preferable that a portion constituted by (or based on) the cellulose short fibers of the intermediate layer is present.
The intermediate layer has a portion where the constituent fibers of the surface layer and the cellulose short fibers of the intermediate layer are mixed by the entanglement of the constituent fibers of the surface layer and the cellulose short fibers of the intermediate layer, so that the Short fibers are easy to exist, and the wiping property becomes better, which is preferable.
Moreover, since the liquid which the intermediate | middle layer hold | maintains is easy to move to the surface of a laminated nonwoven fabric, and it becomes easy to give a liquid more to the wiping target, it is preferable.

It is preferable that the intermediate layer has a portion constituted by the cellulose short fibers of the intermediate layer without the constituent fibers of the surface layer, since the sustained release property of the liquid retained by the intermediate layer becomes better.
In the intermediate layer, the portion where the constituent fibers of the surface layer and the cellulose short fibers of the intermediate layer are mixed by the entanglement of the constituent fibers of the surface layer and the cellulose short fibers of the intermediate layer, and the intermediate layer without the constituent fibers of the surface layer It is preferable that the portion constituted by the cellulose short fibers is continuously present along one direction (for example, the direction of the long side) in the plane direction and the surface of the laminated nonwoven fabric, and is orthogonal to the one direction. It is preferable that each location exists alternately in the direction (for example, the direction of the short side).

The laminated nonwoven fabric of the form of the present invention may include a portion where the constituent fibers of the surface layer and the cellulose short fibers of the intermediate layer are mixed due to the entanglement of the constituent fibers of the surface layer and the cellulose short fibers of the intermediate layer.
The laminated nonwoven fabric in the form of the present invention is a mixture of the constituent fibers of the surface layer and the cellulose short fibers of the intermediate layer, the portion where the constituent fibers of the surface layer and the cellulose short fibers of the intermediate layer are mixed, and the surface layer The constituent fibers and the cellulose short fibers of the intermediate layer are not entangled, and can include a portion where the laminated structure of the surface layer, the intermediate layer, and the surface layer is maintained.

The intermediate layer fibers and the two surface layer fibers are preferably not bonded.
In the laminated nonwoven fabric, the fibers may be bonded to each other by melting the constituent fibers or the like, but it is preferable that the fibers are not bonded to each other from the viewpoint of good skin feel or soft touch.

The thickness of the interpersonal wiper or the like in the form of the present invention is preferably 0.20 to 1.0 mm in a state where a load of 2.94 cN per 1 cm ² (that is, a pressure of 294 Pa) is applied, and 0.45 More preferably, it is -0.65mm, and it is especially preferable that it is 0.50-0.60mm.
When the thickness of an interpersonal wiper or the like in the form of the present invention is 0.20 to 1.0 mm in a state where a load of 2.94 cN (pressure of 294 Pa) is applied per 1 cm ² , the point of wiping or handling properties And more preferable.

Further, the thickness of the interpersonal wiper or the like in the form of the present invention is preferably 0.10 to 0.70 mm in a state where a load of 19.6 cN per 1 cm ² (that is, a pressure of 1.96 kPa) is applied. 0.30 to 0.60 mm is more preferable, and 0.35 to 0.50 mm is particularly preferable.
When the thickness of an interpersonal wiper or the like in the form of the present invention is 0.10 to 0.70 mm in a state where a load of 19.6 cN (pressure of 1.96 kPa) is applied per 1 cm ² , wiping property or handling property This is more preferable.

Basis weight of the entire laminated nonwoven fabric is preferably 15~90g / ^{m 2,} more preferably from 30~70g / ^{m 2,} and particularly preferably 35~55g / ^{m 2.}
When the basis weight of the entire laminated nonwoven fabric is 15 to 90 g / m ^2, it is more preferable in terms of wiping property or handling property.

  In the laminated nonwoven fabric, the basis weight of the intermediate layer is preferably larger than the basis weight of each surface layer from the viewpoint of the sustained release of the liquid. The ratio of the weight of the intermediate layer to the weight of each surface layer (weight of the intermediate layer / weight of each surface layer) is preferably 1.1 or more, more preferably 1.8 or more, It is more preferably 2.3 or more, and particularly preferably 2.5 or more. The ratio of the basis weight of the intermediate layer to the basis weight of each surface layer (intermediate layer basis weight / weight of each surface layer) is preferably 4.0 or less, more preferably 3.5 or less. More preferably, it is 0 or less. The weight of the intermediate layer is larger than the weight of each surface layer, or the ratio of the weight of the intermediate layer to the weight of each surface layer (weight of the intermediate layer / weight of each surface layer) exceeds 1.0. This is preferable because the cellulose-based short fibers are likely to be present on the surface of the laminated nonwoven fabric, and the wiping property becomes better.

  The stress at 10% elongation in the MD direction of the laminated nonwoven fabric is preferably 8.0 N / 5 cm or more, more preferably 10.0 N / 5 cm or more, and further preferably 12.0 N / 5 cm or more. It is particularly preferably 15.0 N / 5 cm or more. The stress at 10% elongation in the MD direction of the laminated nonwoven fabric is preferably 50.0 N / 5 cm or less, more preferably 40.0 N / 5 cm or less, and still more preferably 30.0 N / 5 cm or less. . When the stress at 10% elongation in the MD direction of the laminated nonwoven fabric is 8.0 N / 5 cm or more, the laminated nonwoven fabric becomes more difficult to deform (more difficult to twist), and is more preferable in terms of wiping property or handling property.

  The stress at 10% elongation in the CD direction of the laminated nonwoven fabric is preferably 0.7 N / 5 cm or more, more preferably 1.0 N / 5 cm or more, and further preferably 1.2 N / 5 cm or more. . The stress at 10% elongation in the CD direction of the laminated nonwoven fabric is preferably 10.0 N / 5 cm or less, more preferably 5.0 N / 5 cm or less, and further preferably 3.0 N / 5 cm or less. . When the stress at 10% elongation in the CD direction of the laminated nonwoven fabric is 0.7 N / 5 cm or more, the laminated nonwoven fabric is more difficult to deform and more preferable in terms of wiping property or handling property.

  The interpersonal wiper according to the embodiment of the present invention has improved dirt wiping property and uptake property (difficult to clog), has good skin feel, soft touch, difficulty in fluffing, retention of liquid such as moisture (or water) It is excellent in balance with other properties such as the property of gradually releasing liquid such as.

In a further aspect, the present invention provides a personal wiper, which comprises:
An interpersonal wiper comprising a laminated nonwoven fabric comprising an intermediate layer and two surface layers laminated on both sides of the intermediate layer,
The intermediate layer contains 80% by mass or more of cellulose short fibers having a fiber length of less than 10 mm,
The two surface layers are
40 to 80% by mass of the first cellulosic fiber having a fiber length of 20 mm or more;
10 to 40% by mass of a second cellulosic fiber having a fiber length of 20 mm or more; and
Including 10-40% by mass of the split-type conjugate fiber and the ultrafine fiber derived from the split-type conjugate fiber,
The fineness of the first cellulosic fiber is 1.0 to 5.6 dtex,
The fineness of the second cellulosic fiber is 0.3 to 1.4 dtex,
The fineness of the first cellulosic fiber is greater than the fineness of the second cellulosic fiber.

In yet another aspect, the present invention provides a laminated nonwoven fabric for interpersonal wipes (hereinafter also referred to as “laminated nonwoven fabric for interpersonal wipers”),
An intermediate layer, and two surface layers laminated on both sides of the intermediate layer,
The intermediate layer contains 80% by mass or more of cellulose short fibers having a fiber length of less than 10 mm,
The two surface layers are
40 to 80% by mass of the first cellulosic fiber having a fiber length of 20 mm or more;
10 to 40% by mass of a second cellulosic fiber having a fiber length of 20 mm or more; and
Including 10-40% by mass of the split-type conjugate fiber and the ultrafine fiber derived from the split-type conjugate fiber,
The fineness of the first cellulosic fiber is 1.0 to 5.6 dtex,
The fineness of the second cellulosic fiber is 0.3 to 1.4 dtex,
The fineness of the first cellulosic fiber is greater than the fineness of the second cellulosic fiber.

  “Personal wiper”, “cellulosic short fiber”, “first cellulosic fiber”, “second cellulosic fiber”, “division” of the above-described embodiments of the present invention (one gist and other gist) Type composite fiber and ultrafine fiber derived from the split type composite fiber ”,“ laminated non-woven fabric ”, etc. shall be appropriately applied as a description of“ interpersonal wiper ”, etc. of further gist and other gist Can do.

  The method for manufacturing the interpersonal wiper according to the embodiment of the present invention is not particularly limited as long as the target interpersonal wiper can be obtained. For example, the following method can be exemplified.

  The method for producing the intermediate layer is not particularly limited. For example, the intermediate layer may be manufactured using a known manufacturing method such as a wet papermaking method or an air laying method using fibers including the above-mentioned “cellulosic short fibers whose fiber length is less than 10 mm”. it can.

  The method for producing the surface layer is not particularly limited. For example, a known manufacturing method such as a card method, a spunbond method, a meltblown method, etc., using fibers including the above-mentioned “first cellulosic fibers”, “second cellulosic fibers”, and “split-type composite fibers” Can be used to produce a surface layer web. In the card method, for example, a surface layer web can be manufactured using a card machine such as a parallel machine, a cloth machine, a cross cloth, a semi-random machine, and a random machine. For a laminate in which two surface layer webs are stacked on both sides of the above intermediate layer, for example, by performing an entanglement process, a laminated nonwoven fabric including an intermediate layer and two surface layers laminated on both sides of the intermediate layer The interpersonal wiper including the laminated nonwoven fabric can be manufactured.

  The above-described entanglement process may be performed by, for example, a needle punch method or a fluid flow entanglement method using a fluid flow such as water. The fluid flow entanglement method is preferably water flow entanglement processing and water vapor flow entanglement processing. In particular, according to the entanglement treatment by the fluid flow, it is easy to perform the entanglement with the cellulosic fibers while dividing the split type composite fiber, and a laminated nonwoven fabric having desired physical properties can be obtained.

Hydroentanglement treatment can be performed by placing the above-described laminate on a support and injecting a columnar water stream. Support flat laminate surface, and if shall not have irregularities, open area per one does not have an opening of more than 0.2 mm ^2, also projections or patterns formed An unsupported support may be used. For example, the support may be a plain weave support of 80 mesh or more and 100 mesh or less.

  The hydroentanglement treatment is performed by, for example, supplying a water flow having a water pressure of 1 MPa or more and 15 MPa or less from a nozzle provided with orifices having a hole diameter of 0.05 mm or more and 0.5 mm or less at intervals of 0.3 mm or more and 1.5 mm or less. It can be carried out by spraying 1 to 5 times on each of the front and back surfaces. The water pressure is preferably 1 MPa or more and 10 MPa or less, more preferably 1 MPa or more and 7 MPa or less.

  After the hydroentanglement treatment, heat treatment may be performed to dry the laminated nonwoven fabric. When heat treatment is performed so that the fibers do not adhere to each other due to melting of the constituent fibers of the laminated nonwoven fabric, for example, the heat treatment is performed at a temperature 10 ° C. or more lower than the melting point of the component having the lowest melting point among the constituent fibers of the laminated nonwoven fabric. Good. Specifically, for example, in the component (resin) constituting the split-type conjugate fiber, the heat treatment may be performed at a temperature lower by 10 ° C. or more than the melting point of the lower melting point component.

  The interpersonal wiper in the form of the present invention can be used as a wet wiper impregnated with a liquid such as moisture, a chemical solution or a cosmetic. The liquid to be impregnated is appropriately selected according to the object (makeup, sweat, nail polish, sebum, excrement, etc.) to be wiped from the human body. The impregnation amount of the liquid may be, for example, 100 parts by mass or more and 700 parts by mass or less, preferably 200 parts by mass or more and 600 parts by mass or less, more preferably 250 parts by mass or more and 500 parts by mass or less with respect to 100 parts by mass of the nonwoven fabric. It is. Depending on the object to be wiped off by the sheet, the liquid may contain, for example, a solid content.

  The interpersonal wiper in the form of the present invention is used for, for example, a cleansing sheet, an antiperspirant sheet, a cleaning sheet for the human body (wiping the hips, wiping sheets such as hands and mouth, foot care sheet, oral care sheet, etc.) and the like. be able to.

  EXAMPLES Hereinafter, although an Example and a comparative example demonstrate this invention concretely and in detail, these Examples are only one aspect | mode of this invention, and this invention is not limited at all by these examples.

The fibers used in this example are shown below.
(A) Cellulose-based short fiber having a fiber length of less than 10 mm (a1) Pulp fiber derived from wood (average fineness 5.6 dtex, fiber length 2.0 mm to 4.0 mm, average fiber length 2.5 mm) (Havix Corporation) Made)
(B) Cellulosic fiber having a fiber length of 20 mm or more (b1) Viscose rayon (CD manufactured by Daiwabo Rayon Co., Ltd.) having a fiber length of 40 mm, a fineness of 1.7 dtex, and an official moisture content of 11.0% (Product name))
(B2) Viscose rayon having a fiber length of 38 mm, a fineness of 0.9 dtex, and an official moisture content of 11.0% (BH (trade name) manufactured by Daiwabo Rayon Co., Ltd.)
(B3) Cotton having an average fiber length of 35 mm (fiber length of 10 to 60 mm), an average fineness of 2.5 dtex, and an official moisture content of 8.5% (MSD (trade name) manufactured by Marusan Sangyo Co., Ltd.)
(C) Split type composite fiber (c1) Split type composite having a fineness of 2.2 dtex, a fiber length of 51 mm, and a split number of 8 consisting of a combination of polyethylene terephthalate (PET) / high density polyethylene (HDPE) Fiber (DFS (SH) (trade name) manufactured by Daiwabo Polytech Co., Ltd.) (This split type composite fiber is divided by hydroentanglement etc., and the fineness of the ultrafine fiber formed has the minimum fineness of 0. (The official moisture content of PET ultrafine fibers is 0.4%, and the official moisture content of HDPE ultrafine fibers is 0.0%.)

Example 1
Preparation of Intermediate Layer As an intermediate layer containing cellulosic short fibers having a fiber length of less than 10 mm, (a) pulp fibers derived from wood (average fineness 5.6 dtex, fiber length 2.0 mm to 4.0 mm, average fiber length 2 .5 mm) 100% by weight of wet non-woven fabric (manufactured by Habix Co., Ltd.) The basis weight of the wet nonwoven fabric was 26 g / m ² .

Production of surface layer The above-mentioned (b1) viscose rayon 60% by mass as the first cellulosic fiber, the above (b2) viscose rayon 20% by mass as the second cellulosic fiber, and the above (c1) as the split type composite fiber ) 20% by mass of split-type composite fibers were mixed, and ^two parallel card webs having a surface layer weight of about 9.5 g / m ² were prepared using a parallel card machine. The ratio of the fineness of the first cellulosic fiber to the fineness of the second cellulosic fiber (the fineness of the first cellulosic fiber / the fineness of the second cellulosic fiber) was 1.9.

Manufacture of laminated nonwoven fabric A laminated body was laminated in the order of surface layer / intermediate layer / surface layer, and was placed on a net and subjected to hydroentanglement treatment while proceeding at a speed of 4 m / min. In the water entanglement process, a columnar water flow with a water pressure of 2.5 MPa is sprayed once onto the upper surface of the laminate using a water jet device equipped with nozzles having pores of 0.12 mm provided at intervals of 1.0 mm. Then, using a similar water jet device, a columnar water flow having a water pressure of 2.5 MPa was sprayed once onto the lower surface of the laminate. The distance between the surface of the laminate and the orifice was 15 mm. A plain weave polyethylene terephthalate net having a warp wire diameter of 0.132 mm, a weft wire diameter of 0.132 mm, and a mesh number of 90 mesh was used as the net. Thereafter, the laminate was dried at 80 ° C. to obtain a laminated nonwoven fabric of Example 1 having an overall basis weight of about 45 g / m ² . The ratio of the weight of the intermediate layer to the weight of each surface layer (weight of the intermediate layer / weight of each surface layer) was 2.7.

Example 2
The overall basis weight is about 48 g / m ² in the same manner as in Example 1, except that two surface layer parallel card webs having a basis weight (web target weight) of about 11.0 g / m ² were prepared. A laminated nonwoven fabric of Example 2 was obtained. The ratio of the weight of the intermediate layer to the weight of each surface layer (weight of the intermediate layer / weight of each surface layer) was 2.4.

Example 3
The overall basis weight is about 50 g / m ² in the same manner as in Example 1 except that two surface layer parallel card webs having a basis weight (web target weight) of about 12.0 g / m ² are prepared as the surface layer. A laminated nonwoven fabric of Example 3 was obtained. The ratio of the weight of the intermediate layer to the weight of each surface layer (weight of the intermediate layer / weight of each surface layer) was 2.2.

Example 4
Example 1 except that a wet nonwoven fabric having a basis weight of 17 g / m ² was prepared as an intermediate layer, and a parallel card web having a basis weight (web target weight) of about 14.0 g / m ² was produced as a surface layer. Thus, a laminated nonwoven fabric of Example 4 having an overall basis weight of about 45 g / m ² was obtained. The ratio of the weight of the intermediate layer to the weight of each surface layer (weight of the intermediate layer / weight of each surface layer) was 1.2.

Comparative Example 1
Example 1 of Example 1 except that (c1) no split-type conjugate fiber was used, (b1) a surface layer was produced using 60% by mass of viscose rayon and (b2) 40% by mass of viscose rayon. A laminated nonwoven fabric of Comparative Example 1 was produced using a method similar to the method.

Comparative Example 2
Example 1 of Example 1 except that (b1) no viscose rayon was used, (b2) a surface layer was produced using 80% by mass of viscose rayon and (c1) 20% by mass of split-type composite fiber. A laminated nonwoven fabric of Comparative Example 2 was produced using a method similar to the method.

Comparative Example 3
Example 1 of Example 1 except that (b2) no viscose rayon was used, (b1) a surface layer was produced using 80% by mass of viscose rayon and (c1) 20% by mass of split-type composite fiber. A laminated nonwoven fabric of Comparative Example 3 was produced using a method similar to the method.

Comparative Example 4
As an intermediate layer, instead of a wet nonwoven fabric composed of (a) wood-derived pulp fibers, the basis weight (web target weight) obtained by using a parallel card machine using 100% by mass of the above (b3) cotton is about 22 g / m. Comparison was made using the same method as in Example 1, except that the parallel card web of intermediate layer ² was used, and the surface layer basis weight (web target basis weight) was about 11.5 g / m ^2. The laminated nonwoven fabric of Example 4 was produced.

  Regarding the laminated nonwoven fabrics of Examples and Comparative Examples, the following evaluations (strong elongation, bending resistance (Dry and Wet), water retention rate, water residual rate, frictional force (maximum frictional force, dynamic frictional force), wipe Detachability (lipstick and liquid foundation (LF)), fluffing (during wiping), maximum frictional force during wiping evaluation was performed. Further, the laminated nonwoven fabric of Example 1 was observed with an electron microscope.

Thickness Using a thickness measuring machine (trade name: THICKNESS GAUGE model CR-60A manufactured by Daiei Scientific Instruments Co., Ltd.), a load of 2.94 cN or 19.6 cN per 1 cm ^{2 of} sample (that is, a pressure of 294 Pa or 1.96 kPa) ) Was added.

In accordance with JIS L 1096: 2010 8.14.1 A method (strip method), using a constant speed tension type tensile tester, the width of the specimen is 5 cm, the distance between grips is 10 cm, and the tensile speed is 30 ± 2 cm / The sample was subjected to a tensile test under the conditions of minutes, and the load value at break (breaking strength), break elongation, and stress at 10% elongation were measured. The tensile test was carried out with the longitudinal direction (MD direction) and the lateral direction (CD direction) of the nonwoven fabric as the tensile direction. All the evaluation results are shown as an average of values measured for three samples.
Further, the stress at the time of 10% elongation was evaluated according to the following evaluation criteria, which was regarded as the result of strong elongation.
○: 8N / 5cm or more (MD direction) and 0.8N / 5cm or more (CD direction)
Δ: 8.0 N / 5 cm or more (MD direction) and less than 0.7 N / 5 cm (CD direction) or 8.0 N / 5 cm (MD direction) and 0.7 N / 5 cm or more (CD direction)
X: Less than 8.0 N / 5 cm (MD direction) and less than 0.7 N / 5 cm (CD direction)

Flexibility (Dry and Wet)
The bending resistance of the laminated nonwoven fabric was measured according to JIS L 1096: 2010 8.21.5 E method (handle ohmmeter method). Specifically, it measured by the following procedure.
A test piece of 20 cm in length and 20 cm in width is placed on a sample stage so that the measurement direction of the test piece is perpendicular to the slot (gap width 10 mm).
Next, when the penetrator blade adjusted so as to be lowered to 8 mm from the surface of the sample stage is lowered and the test piece is pushed in, it is 6.7 cm (one third of the width of the test piece) from either side. The resistance value against indentation is read at different positions in the vertical and horizontal directions. The maximum value (g) indicated by the microammeter is read as the resistance value. The total value of the maximum values of the four sides is obtained, and the average value of the three times is calculated to obtain the bending resistance of the sample during drying (Dry).
When wet (wet), the bending resistance is 100 parts by weight of laminated nonwoven fabric impregnated with 500 parts by weight of distilled water, and a polyethylene sheet (23 cm long, 23 cm wide, 0.06 mm thick) under the laminated nonwoven fabric. ) And measured. The value obtained by subtracting the measured value of the bending resistance of only the polyethylene sheet from the measured value was defined as the bending resistance when wet.
The bending resistance at the time of drying was evaluated according to the following evaluation criteria.
○: 30 g or more and 45 g or less Δ: 25 g or more and less than 30 g and more than 45 g and less than 55 g ×: Less than 25 g and more than 55 g The bending resistance when wet was evaluated according to the following evaluation criteria.
○: 34 g or more and 44 g or less Δ: 29 g or more and less than 34 g and more than 44 g and 54 g or less ×: Less than 29 g and more than 54 g

Water retention The laminated nonwoven fabric was cut into a size of 10 cm × 10 cm, and the mass of the laminated nonwoven fabric was measured. Then, the laminated nonwoven fabric was put in a water tank of distilled water and immersed in water for 2 minutes so as not to float. Thereafter, the laminated nonwoven fabric was taken out, and the mass of the laminated nonwoven fabric was measured after being suspended for 10 minutes by sandwiching three of the four corners with clothespins. The water retention rate of the laminated nonwoven fabric was calculated according to the following formula.
Water retention rate (%) = [(M2-M1) / M1] × 100
M1: Mass of the laminated nonwoven fabric before being immersed in distilled water (g)
M2: Mass (g) of laminated nonwoven fabric after suspending laminated nonwoven fabric soaked in distilled water for 10 minutes
The water retention rate was evaluated according to the following evaluation criteria.
○: 400% or more ×: Less than 400%

Liquid remaining rate Each test piece was impregnated with an amount of distilled water corresponding to the water retention rate of each test piece (5 × 15 cm, long side in the MD direction). A liquid-absorbing sheet (filter paper, qualitative filter paper No. 2 (trade name) manufactured by ADVANTEC) was prepared in advance. As the liquid absorbent sheet (filter paper), 5 sheets were used for 1 minute from the start of pressurization, 2 sheets were used for 1-2 minutes, 1 sheet was used for 2-3 minutes, and 1 sheet was used for 3-4 minutes. Therefore, nine sheets were prepared in one test. A test piece impregnated with distilled water is placed on top of five liquid-absorbing sheets, an acrylic plate is placed on the test piece, and the test piece and the liquid-absorbing solution are placed at a pressure of 1 g / cm ² by the acrylic plate. Pressure was applied to the sheet. 1 minute after pressurization, 5 liquid-absorbing sheets are changed to 2 new liquid-absorbing sheets, 2 minutes later, 2 liquid-absorbing sheets are changed to 1 new liquid-absorbing sheet, and 3 minutes later The liquid absorbent sheet was changed to a new liquid absorbent sheet, and pressurization was terminated after 4 minutes. The mass of the liquid absorbent sheet after use was measured for each elapsed time, and the mass of the distilled water released was calculated from the increase in the mass of the liquid absorbent sheet. Using the amount of distilled water impregnated in each test piece as a reference (100%), the residual rate of distilled water was calculated for each test piece.
The liquid remaining rate after 1 minute elapsed was evaluated according to the following evaluation criteria, and the result was the liquid remaining rate.
○: 10% or more ×: less than 10%

Friction force (maximum friction force and dynamic friction force)
The frictional force was measured using Tribomaster Type: TL201Ts (trade name) (AC servo motor specification), which is a static / dynamic friction wear measuring machine manufactured by Trinity Lab. The measurement conditions were set as follows: speed: 10 mm / sec, movement distance: 30 mm, number of reciprocations: twice, load: 30 g. A tactile contact (manufactured by Trinity Lab Co., Ltd.) was installed in the terminal receptacle as a contact terminal of the measuring machine. A laminated nonwoven fabric (5 × 12 cm) in a wet state (impregnated with 400% by mass of distilled water with respect to 100% by mass of the laminated nonwoven fabric) as a sample piece was fixed on a measurement table of a measuring machine with a double-sided tape. The contact terminals were placed on the laminated nonwoven fabric and stabilized so that the numerical value was zero. The laminated nonwoven fabric (measurement table) was moved along the long side direction of the laminated nonwoven fabric under the measurement conditions described above, and the maximum frictional force and the dynamic frictional force were measured. The frictional force was read as the second round-trip value, and the average value of the forward and backward values was taken as the maximum frictional force (gf) and dynamic frictional force (gf) of one sample piece.
For the laminated nonwoven fabric of each example or comparative example, three sample pieces with the long side in the MD direction and three sample pieces with the long side in the CD direction were prepared, for a total of six sample pieces. Was the maximum frictional force (gf) and dynamic frictional force (gf) of the laminated nonwoven fabrics of each example or comparative example.
The frictional force needs to be neither too high nor too low. If it is large, the burden on the skin becomes large, and if it is small, the wiping property is lacking.
The maximum frictional force was evaluated according to the following evaluation criteria.
○: 24 gf or more and 28 gf or less Δ: 20 gf or more and less than 24 gf and more than 28 gf and less than 32 gf ×: Less than 20 gf and more than 32 gf The dynamic friction force was evaluated according to the following evaluation criteria.
○: 18 gf or more and 23 gf or less Δ: 14 gf or more and less than 18 gf and more than 23 gf and less than 27 gf ×: less than 14 gf and more than 27 gf

Wipeability (lipstick and liquid foundation (LF))
The wiping property was measured using Tribomaster Type: TL201Ts (trade name) (AC servo motor specification), which is a static / dynamic friction wear measuring machine manufactured by Trinity Lab. The measurement conditions were set to speed: 10 mm / sec, travel distance: 100 mm, one way, load: 50 g (lipstick) or 100 g (LF). A laminated nonwoven fabric (5 × 12 cm, long side in the MD direction) in wet state (impregnated with 400% by weight of distilled water with respect to 100% by weight of the laminated nonwoven fabric) was fixed to the terminal receiver of the contact terminal of the measuring machine with double-sided tape. . Pseudo-stain (AC Crayon Lip 05 Salmon Pink (trade name) made by Dovest Co., Ltd. or Esprik Skincare Foundation UV (trade name) made by KOSE Liquid Foundation) was provided on a transparent acrylic plate. . For the lipstick pseudo-stain, three linear stains were provided in the direction perpendicular to the moving direction of the transparent acrylic plate described below. The pseudo soil of the liquid foundation was provided by applying 0.05 g of liquid foundation on a transparent acrylic plate and thinning it to a rectangular area of 3 × 8 cm. The long side of the rectangle was provided so as to be perpendicular to the moving direction of the transparent acrylic plate described below. The transparent acrylic plate was placed on the measurement table of the measuring machine, the transparent acrylic plate (measurement table) was moved, and each pseudo stain was wiped off in one direction with the laminated nonwoven fabric. The state of the transparent acrylic plate after wiping was visually observed.
About each laminated nonwoven fabric, it measured once about each pseudo-stain, and made the observation result into the measurement result.
Evaluation was performed according to the following evaluation criteria.
○: Wiped well.
Δ: Wiped to some extent.
X: Wiping off is insufficient.

Fluffing (after wiping evaluation)
After evaluating the wiping property of the above-mentioned liquid foundation, the fuzz of the laminated nonwoven fabric used was visually evaluated.
Evaluation was performed according to the following evaluation criteria.
○: There is virtually no fuzzing.
Δ: Slight fuzz is present.
X: There is a big fluff.

Maximum friction force at the time of wiping evaluation The magnitude of the measured maximum frictional force was evaluated at the time of wiping evaluation of the liquid foundation described above. When the frictional resistance at the time of wiping off the dirt is large, the laminated nonwoven fabric is deformed and easily rounded or wrinkled. The ease of deformation of the laminated nonwoven fabric when wiping off the dirt is also referred to as “twisting”, and when the laminated nonwoven fabric is easily deformed, it is also referred to as being easy to twist. If the frictional resistance when wiping off the dirt is small, it is difficult to remove the dirt.
The friction force was evaluated according to the following evaluation criteria.
○: 100 gf or more and 170 gf or less Δ: 90 gf or more and less than 100 gf and more than 170 gf and less than 180 gf ×: Less than 90 gf and more than 180 gf

Electron Microscope Observation Further, the surface of the laminated nonwoven fabric and the cross section in the horizontal direction (cross section cut along the CD direction) were observed using a scanning electron microscope (10 kV, 50 to 80 times).

1) The evaluation on the left is Dry and the evaluation on the right is Wet. 2) The left is the maximum frictional force and the right is the dynamic frictional force evaluation.

About strong elongation, the laminated nonwoven fabric of Examples 1-4 and Comparative Examples 1-3 showed the stress at the time of 10% elongation of moderate intensity | strength. On the other hand, the stress at 10% elongation of the laminated nonwoven fabric of Comparative Example 4 was small. When the stress at 10% elongation is small, the interpersonal wiper tends to be twisted or torn when the wiper is removed from the container or wiped off. The laminated nonwoven fabric of Comparative Example 4 has insufficient strength as a personal wiper. It was.
Since the laminated nonwoven fabrics of Examples 1 to 4 and Comparative Examples 1 to 3 use a fiber layer made of cellulosic fibers having a fiber length of less than 10 mm as an intermediate layer, the constituent fibers of the surface layer and the configuration of the intermediate layer The confounding property with the fiber is good, and it is considered that the fiber has sufficient strength as a personal wiper. On the other hand, since the laminated nonwoven fabric of Comparative Example 4 uses a fiber layer mainly composed of fibers having a fiber length of 20 mm or more as an intermediate layer, the confounding property between the constituent fibers of the surface layer and the intermediate layer is sufficient. It is thought that the strength was not sufficient as a personal wiper.

Moreover, when the thickness of the laminated nonwoven fabric of Example 1 and Comparative Example 4 is compared, the thickness of the laminated nonwoven fabric of Example 1 is smaller, and this difference is considered to be mainly caused by the difference in the thickness of the intermediate layer. The fact that the thickness of the intermediate layer is small suggests that the fiber density of the intermediate layer is large, and this is considered to contribute to the improvement of the strength as a laminated nonwoven fabric, particularly the improvement of the stress at 10% elongation. It is considered that the difference in the thickness of the intermediate layer mainly occurred because the laminated nonwoven fabric of Example 1 had a smaller fiber length of the constituent fibers and was a nonwoven fabric obtained by a wet papermaking method.
Further, when the laminated nonwoven fabrics of Example 1 and Comparative Example 3 were compared, the laminated nonwoven fabric of Example 1 had a larger stress at 10% elongation (particularly in the MD direction). The laminated nonwoven fabric of Example 1 contains 0.9 dtex of rayon in the surface layer, and it is considered that the inclusion of cellulosic fibers having a small fineness contributes to improvement of the stress at 10% elongation of the nonwoven fabric. It is considered that the inclusion of cellulose fibers having a small fineness increases the number of hydrophilic fibers contained in the nonwoven fabric and improves the entanglement, thereby contributing to the improvement of the strength of the laminated nonwoven fabric.
Further, when the laminated nonwoven fabrics of Example 1 and Example 4 were compared, the laminated nonwoven fabric of Example 1 had a larger stress at 10% elongation (particularly in the MD direction). The laminated nonwoven fabric of Example 1 and the laminated nonwoven fabric of Example 4 differ in the basis weight of the wet nonwoven fabric of the intermediate layer, and the laminated nonwoven fabric of Example 1 has a larger basis weight of the intermediate layer. Since the laminated nonwoven fabric of Example 1 has more cellulosic fibers having a fiber length of less than 10 mm compared to the laminated nonwoven fabric of Example 4, the entanglement between the constituent fibers of the surface layer and the intermediate layer is improved, It is thought that the stress at 10% elongation increased.

  Regarding the bending resistance when wet, the laminated nonwoven fabric of Example 1 showed a moderate bending resistance. It was expected that the laminated nonwoven fabrics of Comparative Examples 2 and 4 showed a slightly higher bending resistance than the laminated nonwoven fabric of Example 1, and the skin feel was felt somewhat hard. The laminated nonwoven fabric of Comparative Example 3 had a slightly lower bending resistance and a tendency to be slightly twisted. When the laminated nonwoven fabric exhibits an appropriate amount of bending resistance, the laminated nonwoven fabric preferably has a balance between skin contact and twist. In the laminated nonwoven fabric of Comparative Example 4, the intermediate layer is composed of cotton, and it is considered that the bending resistance is increased because it includes cotton having high fiber strength when wet. The laminated nonwoven fabric of Comparative Example 2 is considered to contain only fibers with a smaller fineness as the cellulosic fibers contained in the surface layer, and the number of fibers constituting the surface layer is larger. Cellulosic fibers when wet are swollen with water. However, when the number of fibers is large, it is considered that the decrease in voids due to swelling becomes larger and the laminated nonwoven fabric tends to be hardened. Contrary to the laminated nonwoven fabric of Comparative Example 2, the laminated nonwoven fabric of Comparative Example 3 contains only fibers having a higher fineness as the cellulosic fiber contained in the surface layer, so that the bending resistance was reduced compared to Example 1. Conceivable.

About the water retention, all of the laminated nonwoven fabrics of Example 1 and Comparative Examples 1 to 4 exceeded 400%. When the water retention rate exceeded 400%, it was sufficient for practical use.
The larger the water residual ratio is, the larger the laminated nonwoven fabric can be wiped off while retaining water, so the laminated nonwoven fabrics of Example 1 and Comparative Examples 1 to 3 are good and are comparative examples. The laminated nonwoven fabric of 4 was insufficient. The laminated nonwoven fabric of Example 1 is a wet nonwoven fabric whose intermediate layer is made of pulp fibers, while the laminated nonwoven fabric of Comparative Example 4 is a card web whose intermediate layer is made of cotton. For the laminated nonwoven fabrics of Example 1 and Comparative Examples 1 to 3, pulp fibers, particularly wood-derived pulp fibers, have a higher fiber cross-sectional flatness than cotton, and wet nonwoven fabrics have a smaller thickness than card webs. It is considered possible to suppress the liquid retained in the intermediate layer from being excessively released to the nonwoven fabric surface. As for the laminated nonwoven fabric of Comparative Example 4, it is considered that the card web made of cotton is relatively easy to release the liquid retained in the intermediate layer to the nonwoven fabric surface.

  The frictional force is preferably a moderate magnitude in terms of skin contact. Although the frictional forces of the laminated nonwoven fabrics of Examples 1 to 4 and Comparative Examples 2 to 3 were good, the frictional force of the laminated nonwoven fabric of Comparative Example 1 was somewhat larger, and the frictional force of the laminated nonwoven fabric of Comparative Example 4 was It was a little small. In the laminated nonwoven fabric of Example 1, since the intermediate layer is made of pulp fibers having a small fiber length, the entanglement with the constituent fibers of the surface layer is high, and the possibility that the pulp fibers are present on the laminated nonwoven fabric surface is higher than that of cotton. Conceivable. When the pulp fiber is present on the surface of the laminated nonwoven fabric, it is considered that the frictional force on the nonwoven fabric surface is improved by the pulp fiber having a fiber diameter larger than that of the constituent fibers of the surface layer and a high flatness of the fiber cross section. Since the laminated nonwoven fabric of Comparative Example 1 does not contain ultrafine fibers derived from split-type composite fibers having a relatively small fineness in the surface layer, it is considered that the smoothness of the laminated nonwoven fabric surface is reduced and the frictional force is improved.

  Regarding the wiping property, the laminated nonwoven fabrics of Examples 1 to 4 were good for both lipstick and liquid foundation (LF) (evaluation was ◯ or Δ), but the laminated nonwoven fabrics of Comparative Examples 1 to 4 were lipsticks. Any of LF was insufficient (evaluation was x). The laminated nonwoven fabric of Example 1 includes fibers having a plurality of finenesses (fiber diameters), and the fibers are sufficiently entangled. Therefore, the laminated nonwoven fabric appropriately includes inter-fiber voids, and takes in dirt of various sizes. It will be easier. The laminated nonwoven fabric of Comparative Example 2 had good lipstick wiping properties but not LF wiping properties. Since the laminated nonwoven fabric of Comparative Example 2 is composed of fibers having relatively small fineness with respect to the constituent fibers of the surface layer, it is likely that the laminated nonwoven fabric is rough and the wiping property is lowered. The laminated nonwoven fabric of Comparative Example 4 also had good lipstick wiping properties, but LF wiping properties were not good. The laminated nonwoven fabric of Comparative Example 4 is considered to have a reduced wiping property due to fluffing as well as the laminated nonwoven fabric of Comparative Example 2, but in addition, the wiping property was lowered due to the ease of twisting of the nonwoven fabric during wiping. it is conceivable that. In the laminated nonwoven fabrics of Example 3 and Example 4, the evaluation of the wiping property of the liquid foundation was Δ. The laminated nonwoven fabrics of Example 3 and Example 4 have a relatively large basis weight of the surface layer, and the ratio of the intermediate layer fibers present in the vicinity of the surface of the nonwoven fabric is low, which is considered to have affected the dirt uptake.

  Regarding fluffing, the laminated nonwoven fabrics of Examples 1 to 4 and Comparative Examples 1 and 3 were good (evaluation was good) and had little fluffing, but the laminated nonwoven fabric of Comparative Example 2 showed some fluffing (evaluation) However, in the laminated nonwoven fabric of Comparative Example 4, fluffing was observed, and thus the fluffing was insufficient (evaluation was x). The laminated nonwoven fabric of Comparative Example 2 is considered to have been affected by the fineness of the constituent fibers of the surface layer as described above. It is considered that the laminated nonwoven fabric of Comparative Example 4 was influenced by insufficient confounding property between the surface layer and the intermediate layer.

  About the maximum frictional force at the time of wiping evaluation, if the value is small, it is difficult to twist, but if it is large, it is easy to twist. The laminated nonwoven fabrics of Examples 1 to 4 and Comparative Examples 2 to 3 were good, but the laminated nonwoven fabric of Comparative Example 1 was somewhat twisted, and the laminated nonwoven fabric of Comparative Example 4 was insufficient. Since the laminated nonwoven fabric of Comparative Example 1 has a relatively large frictional force on the surface of the laminated nonwoven fabric as described above, it is considered that if the force (pressure) at the time of wiping is large, the nonwoven fabric stretches and the twist increases. It is considered that the laminated nonwoven fabric of Comparative Example 4 was easily twisted during use because the strength of the laminated nonwoven fabric was not sufficient.

Scanning electron micrographs (10 kV, 50 to 80 times) of the laminated nonwoven fabric of Example 1 are shown in FIGS. 1 shows a scanning electron micrograph (50 ×) of the surface of the laminated nonwoven fabric of Example 1. FIG. FIG. 2 shows a scanning electron micrograph (80 ×) of a cross section obtained by cutting the laminated nonwoven fabric of Example 1 along the horizontal direction (CD direction).
Regarding the intermediate layer, the portion surrounded by the white solid line in FIGS. 1 and 2 is considered to be a portion constituted by the cellulose short fibers of the intermediate layer in which the constituent fibers of the surface layer do not exist, and is surrounded by the white dotted line. The location is considered to be a location where the constituent fibers of the surface layer and the cellulose short fibers of the intermediate layer are mixed due to the entanglement of the constituent fibers of the surface layer and the cellulose short fibers of the intermediate layer.

The reason why the laminated nonwoven fabric of Example 1 has excellent properties is that the intermediate layer is composed of cellulosic short fibers of the intermediate layer in which the constituent fibers of the surface layer are not present, the constituent fibers of the surface layer and the intermediate layer This is considered to be due to the inclusion of the constituent fibers of the surface layer and the cellulose staple fibers of the intermediate layer due to the entanglement of the cellulose staple fibers.
In the intermediate layer, by the entanglement of the constituent fibers of the surface layer and the cellulose short fibers of the intermediate layer, the constituent fibers of the surface layer and the cellulose short fibers of the intermediate layer are mixed, and the constituent fibers of the surface layer do not exist, The locations constituted by the cellulose-based short fibers of the intermediate layer are each continuously present along the MD direction in the plane direction with the surface of the laminated nonwoven fabric, and each location in the direction perpendicular to the MD direction (CD direction). Exist alternately. This is considered to be because the location where the constituent fibers of the surface layer and the cellulosic short fibers of the intermediate layer coexist with the location where the water flow of the hydroentanglement treatment has passed.

  Since the laminated nonwoven fabric of Example 1 uses a fiber layer containing a large amount of cellulosic fibers having a fiber length of less than 10 mm as the intermediate layer, the confounding property between the constituent fibers of the surface layer and the constituent fibers of the intermediate layer is good. It is considered that a portion where the constituent fibers of the surface layer and the cellulose short fibers of the intermediate layer are mixed is easily obtained by the entanglement of the constituent fibers of the surface layer and the cellulose short fibers of the intermediate layer. In the laminated nonwoven fabric of Example 1, the ratio of the weight of the intermediate layer to the weight of each surface layer (weight of the intermediate layer / weight of each surface layer) is relatively large. Confounding property with the constituent fibers is good, and it is thought that a place where the constituent fibers of the surface layer and the cellulose short fibers of the intermediate layer are mixed is easily obtained by the entanglement of the constituent fibers of the surface layer and the cellulose short fibers of the intermediate layer. .

From the above, the laminated nonwoven fabrics of Examples 1 to 4 were good, well-balanced, and excellent.
On the other hand, the laminated nonwoven fabrics of Comparative Examples 1 to 4 had x.
The laminated nonwoven fabric of Comparative Example 1 has poor lipstick wiping properties. The laminated nonwoven fabric of Comparative Example 2 is inferior in the liquid foundation wiping property. The laminated nonwoven fabric of Comparative Example 3 is inferior in lipstick wiping properties. The laminated nonwoven fabric of Comparative Example 4 is generally inferior.

  Therefore, it was shown that the laminated nonwoven fabric related to the present invention is easy to take in dirt, improves wiping properties, has a soft touch, and has excellent balance of other properties such as excellent liquid remaining rate. .

  The interpersonal wiper in the form of the present invention is used by impregnating with a liquid such as moisture, chemicals or cosmetics, and it is easy to take in dirt, improving wiping property, and also has a soft feel, and also the remaining rate of liquid Other properties such as superiority are also well balanced.

Claims (10)

An interpersonal wiper comprising a laminated nonwoven fabric comprising an intermediate layer and two surface layers laminated on both sides of the intermediate layer,
The intermediate layer contains 80% by mass or more of cellulose short fibers having a fiber length of less than 10 mm,
The two surface layers include 80% by mass or more of fibers having a fiber length of 20 mm or more,
40 to 80% by mass of the first cellulosic fiber;
10-40% by weight of the second cellulosic fiber; and
Including 10-40% by mass of the split-type conjugate fiber and the ultrafine fiber derived from the split-type conjugate fiber,
The fineness of the first cellulosic fiber is 1.0 to 5.6 dtex,
The ratio of the fineness of the first cellulosic fiber to the fineness of the second cellulosic fiber (the fineness of the first cellulosic fiber / the fineness of the second cellulosic fiber) is 1.2 or more.
Interpersonal wiper.   The interpersonal wiper according to claim 1, wherein the weight of the intermediate layer is larger than the weight of each of the surface layers.   The interpersonal wiper according to claim 1 or 2, wherein the fibers of the intermediate layer and the fibers of the two surface layers are entangled so that the intermediate layer and the two surface layers are integrated.   The interpersonal wiper according to any one of claims 1 to 3, wherein the fibers of the intermediate layer and the fibers of the two surface layers are not bonded.   The interpersonal wiper according to any one of claims 1 to 4, wherein a stress at 10% elongation in the MD direction of the laminated nonwoven fabric is 8.0 N / 5 cm or more.   The intercellular wiper according to any one of claims 1 to 5, wherein the cellulose short fibers having a fiber length of less than 10 mm include wood-derived pulp.   The split composite fiber has a fineness of 1.0 dtex to 4.4 dtex, and the ultrafine fiber derived from the split composite fiber has a fineness of 0.05 dtex to 0.60 dtex. Interpersonal wipers described in 1.   The combination of constituent components of the split type composite fiber includes at least one selected from polyethylene terephthalate / polyethylene, polyethylene terephthalate / polypropylene, polyethylene terephthalate / ethylene-propylene copolymer, and polypropylene / polyethylene. The interpersonal wiper according to any of the above.   Each of the first cellulosic fibers and the second cellulosic fibers contains at least one selected from viscose rayon, solvent-spun cellulose fibers, and cotton, and is for personal use according to any one of claims 1 to 8. Wiper. A laminated nonwoven fabric for interpersonal wipers,
The laminated nonwoven fabric includes an intermediate layer and two surface layers laminated on both sides of the intermediate layer,
The intermediate layer contains 80% by mass or more of cellulose short fibers having a fiber length of less than 10 mm,
The two surface layers include 80% by mass or more of fibers having a fiber length of 20 mm or more,
40 to 80% by mass of the first cellulosic fiber;
10-40% by weight of the second cellulosic fiber; and
Including 10-40% by mass of the split-type conjugate fiber and the ultrafine fiber derived from the split-type conjugate fiber,
The fineness of the first cellulosic fiber is 1.0 to 5.6 dtex,
The ratio of the fineness of the first cellulosic fiber to the fineness of the second cellulosic fiber (the fineness of the first cellulosic fiber / the fineness of the second cellulosic fiber) is 1.2 or more.
Laminated nonwoven fabric for interpersonal wipers.