JP2020130821A - Absorbent article - Google Patents

Abstract

To provide an absorbent article with wings, capable of securing an original function of wings and further facilitating a detachment operation of the absorbent article.SOLUTION: There is provided an absorbent article with a main body comprising: a liquid permeable surface sheet; a liquid impermeable rear surface sheet; and an absorber provided between the surface sheet and the rear surface sheet. The main body comprises a cross direction and a width direction orthogonal to the cross direction, and comprises a pair of a first wing and a second wing which extend toward respective outside directions in the width direction of the main body. The at least first wing is formed by detachably jointing a first sheet which is separate from the main body to the main body.SELECTED DRAWING: Figure 1A

Description

The present invention relates to an absorbent article.

As absorbent articles such as sanitary napkins, incontinence pads, and panty liners (pantyliners), those with a pair of flap-shaped parts extending outward in the width direction of the main body, that is, wings are known. There is. Each wing is folded back toward the underwear when it is attached, and is attached to the underwear by an adhesive portion or the like provided on the back sheet side. As a result, the absorbent article can be securely fixed by the underwear.

When removing an absorbent article having such a wing from the underwear, it takes time to peel off the wing that has been folded and pasted from the underwear, so that the removal operation of the absorbent article is compared with the absorbent article without a wing. It was sometimes complicated. Therefore, a configuration has been devised that facilitates the removal of absorbent articles from underwear.

For example, Patent Document 1 includes a pair of first and second wings that extend outward in the width direction from the main body and overlap each other while being attached to underwear, and the first wing extends in the front-rear direction. An absorbent article with a portion is disclosed. In the configuration disclosed in Patent Document 1, by holding the main body of the absorbent article and peeling it from the underwear, the wing is broken at the tear induction portion, and the absorbent article is detached from the underwear.

Japanese Patent No. 6146783

However, in the configuration as disclosed in Patent Document 1, a relatively large force may be required for breaking the wing, and the absorbent article may not be easily removed from the underwear. On the other hand, if the tear guide is made more fragile in order to reduce the force required for breaking, the wing will break during the mounting operation or during mounting, and the absorbent article will be securely fixed with underwear. It may not be able to perform its original function.

In view of the above points, it is an object of the present invention to provide an absorbent article with a wing that facilitates the removal operation of the absorbent article while ensuring the original function of the wing. And.

A first aspect of the present invention is absorption including a main body having a liquid-permeable front surface sheet, a liquid-impermeable back surface sheet, and an absorber provided between the front surface sheet and the back surface sheet. A pair of first wing and a second body, which is a sex article, has a front-rear direction and a width direction orthogonal to the front-rear direction, and extends outward in the width direction of the main body. It includes two wings, and at least the first wing is formed by detachably joining a first sheet, which is separate from the main body, to the main body.

According to the first aspect, at least the first wing is detachably joined to the main body and the first sheet which is separate from the main body. Therefore, in the operation of removing the absorbent article, the wing can be separated not by breaking the wing but by peeling off the main body and the first sheet. More specifically, when removing the collectible article from the underwear, it is usually pulled by holding the end of the absorbent article body to peel it off from the underwear, but this operation is an operation for peeling the body from the first sheet. Can also be. Therefore, the main body and the first sheet can be easily peeled off by such a normal removal operation of the absorbent article. Then, the main body after the first sheet is detached can be easily removed from the underwear together with the second wing.

In the second aspect of the present invention, the second wing is formed by joining a second sheet separate from the main body to the main body, and the first sheet is the second sheet. It is easier to separate from the main body.

According to the second aspect, since both the first wing and the second wing are formed by joining a sheet separate from the main body, a more balanced configuration can be made on the left and right sides. It is possible to reduce discomfort during wearing. In addition, the material used for the main body can be cut out into an uncomplicated shape without the extension of the wing, so that the material can be saved. Since the first sheet is easier to separate than the second sheet, the main body and the first sheet can be more easily peeled off during the removal operation of the absorbent article, and the absorbent article can be underwear. The above-mentioned effect that it can be easily removed from the above can be obtained.

In the third aspect, the first sheet and the second sheet are joined to the main body via the first joint portion and the second joint portion, respectively, and the first sheet extends from the center line extending in the front-rear direction. The distance of the joint to the outer end in the width direction is shorter than the distance to the outer end of the second joint in the width direction.

According to the third aspect of the present invention, since the first sheet and the second sheet are joined to the main body via the first joint portion and the second joint portion, respectively, the first sheet and the second sheet are mounted. It is possible to more reliably prevent the product from coming off during operation or during mounting. Further, since the position of the outer end in the width direction of the first joint is closer to the center line in the front-rear direction, when the absorbent article is removed from the underwear, when the main body is held and peeled off from the end in the front-rear direction, the main body becomes the first 2 It becomes easy to tilt to the wing side. By continuously peeling off the main body in this tilted state, a force is easily applied to the first joint, and the main body and the first sheet can be easily peeled off, so that the absorbent article can be easily removed. The above-mentioned effect of becoming is improved.

In the fourth aspect of the present invention, the first sheet and the second sheet are joined to the main body via the first joint and the second joint, respectively, and the front end of the first joint is the said. It is located posterior to the front end of the second joint and / or the rear end of the first joint is located anterior to the rear end of the second joint.

According to the fourth aspect, for example, the front end of the first joint is located behind the front end of the second joint, so that when the main body is peeled off from the underwear in the front-rear direction, the main body is It becomes easy to tilt to the second wing side. If the main body is continuously peeled off in this tilted state, a force is easily applied to the first joint, and the main body and the first sheet are easily peeled off, so that the absorbent article can be easily removed. The above-mentioned effect is improved.

In the fifth aspect of the present invention, the first sheet and the second sheet are joined to the main body via the first joint portion and the second joint portion, respectively, and per unit area of the first joint portion. The joint strength of is smaller than the joint strength per unit area of the second joint portion.

According to the fifth aspect, since the main body and the first sheet can be peeled off more easily, the above-mentioned effect that the absorbent article can be easily removed is improved. Further, when the extending regions (shape and thickness in plan view) of the first joint portion and the second joint portion are configured to be the same or substantially the same, the discomfort during mounting that may occur due to the difference in the size of the joint portions is reduced. be able to.

In the sixth aspect of the present invention, the second wing is inseparable from the main body.

According to the sixth aspect, the possibility that the second sheet will come off when the absorbent article is removed from the underwear can be reduced, so that the first sheet can be reliably separated from the main body.

In the seventh aspect of the present invention, the main body includes side non-woven fabrics at both ends in the width direction on the front surface sheet side along the front-rear direction, and the back surface sheet and the side non-woven fabrics have the widths, respectively. The second wing has an extension portion outward in the direction, and both extension portions are joined to each other.

According to the seventh aspect, since the second wing is formed by the back surface sheet used for the main body and the extending portion of the side non-woven fabric, the second wing is not easily broken. Therefore, at least this second wing can ensure the function of fixing the absorbent article to the underwear. Further, since the second wing can be configured without a joint portion, the joining material can be saved.

In the eighth aspect of the present invention, the first wing and the second wing have a first adhesive portion and a second adhesive portion on the back surface sheet side, respectively, and the first wing and the second wing are , It is folded back to the underwear side at the time of mounting, overlapped, and bonded by the first adhesive portion or the second adhesive portion.

According to the eighth aspect, since the first wing and the second wing are bonded to each other, both wings can restrain each other, and the function of the wing that fixes the absorbent article to the underwear during wearing is further enhanced. Can be enhanced.

According to one aspect of the present invention, it is possible to provide an absorbent article with a wing that facilitates the removal operation of the absorbent article while ensuring the original function of the wing.

It is a partial fracture plan view which looked at the absorbent article by 1st Embodiment of this invention from the surface sheet side. FIG. 3 is a plan view of the absorbent article shown in FIG. 1A as viewed from the back sheet side. FIG. 1A is a cross-sectional view taken along the line II of FIG. 1A. It is a partial plan view of the wing of the absorbent article shown in FIG. 1A in a folded state. It is a figure for demonstrating the removal of the absorbent article by the absorbent article by 1st Embodiment. A modification of the absorbent article according to the first embodiment is shown. A modification of the absorbent article according to the first embodiment is shown. A modification of the absorbent article according to the first embodiment is shown. A modification of the absorbent article according to the first embodiment is shown. It is a top view which looked at the absorbent article by 2nd Embodiment of this invention from the surface sheet side. FIG. 8A is a sectional view taken along line II-II of FIG. 8A.

Hereinafter, embodiments of the present invention will be described with reference to the drawings. In each drawing, unless otherwise specified, the same or corresponding configurations may be designated by the same reference numerals and the description thereof may be omitted. In addition, the drawings are schematic to help the understanding of the invention.

1A-1C show the absorbent article 100 according to one embodiment of the present invention. FIG. 1A is a partially broken plan view of the absorbent article 100 viewed from the front surface side (the side facing the skin when worn), and FIG. 1B is a back surface side (the side facing the underwear when worn) of the absorbent article 100. It is a plan view seen from. Further, FIG. 1C is a cross section taken along line I-I of FIG. 1A.

As shown in FIGS. 1A to 1C, the absorbent article 100 includes a liquid-impermeable back sheet 2, a liquid-permeable front sheet 3, and an absorber 4 provided between both sheets 2 and 3. It is provided with a main body (absorbent article main body) 8 having the above.

(Absorbable article body)
The main body 8 has a front-rear direction D1 and a width direction D2 orthogonal to the front-rear direction D1. In the illustrated example, the main body 8 has a predetermined length in the front-rear direction D1 and a predetermined width in the width direction D2, and has an elongated shape in a plan view, but the shape of the main body 8 is shown in the figure. Not limited. The body 8 may have, for example, a similar length and width. Further, in the illustrated example, the width of the main body 8 is substantially constant, but it may change over the front-rear direction D1. Further, the plan view shape of the main body 8 is substantially line-symmetrical with respect to the center line (front-back direction center line) CL extending in the front-rear direction D1, but the plan-view shape of the absorbent article 100 is not necessarily line-symmetrical. Good.

The total length of the main body 8 corresponding to the total length of the absorbent article 100 is not particularly limited, but may be 200 to 420 mm. Further, the width of the main body 8 is not particularly limited, but may be 50 to 110 mm.

As the back sheet 2, a sheet material having at least water impermeability, such as an olefin resin sheet such as polyethylene or polypropylene, can be used. It is possible to use a laminated non-woven fabric in which a non-woven fabric is laminated on a polyethylene sheet or the like, or a laminated non-woven fabric sheet in which a waterproof film is interposed to ensure substantially impermeable liquid. Further, from the viewpoint of preventing stuffiness, it is more desirable to use a material having moisture permeability. Such a water-impervious / moisture-permeable sheet material is obtained by melt-kneading an inorganic filler in an olefin resin such as polyethylene or polypropylene to form a sheet, and then stretching the sheet in the uniaxial or biaxial direction. A porous sheet can be used.

The surface sheet 3 is a liquid-permeable sheet that rapidly permeates body fluids such as menstrual blood, vaginal discharge, and urine. As the surface sheet 3, a perforated or non-perforated non-woven fabric, a porous plastic sheet, or the like is preferably used. As the material fibers constituting the non-woven fabric, for example, olefins such as polyethylene and polypropylene, synthetic fibers such as polyester and polyamide, recycled fibers such as rayon and cupra, blended fibers thereof, and natural fibers such as cotton can be used alone or. Two or more types can be used in combination. Further, examples of the non-woven fabric processing method include a spunlace method, a spunbond method, a thermal bond method, a melt blown method, a needle punch method and the like. Among these processing methods, the spunlace method is preferable in that it can produce a flexible non-woven fabric and the spunbond method is preferable in that it can produce a non-woven fabric having a high drape property, and the thermal bond method is preferable in that it can produce a bulky and soft non-woven fabric. Further, composite fibers such as core-sheath type fibers having a high melting point fiber as a core and a low melting point fiber as a sheath, side-by-side type fibers, and split type fibers can be used.

The absorber 4 interposed between the back surface sheet 2 and the front surface sheet 3 is not limited as long as it is a material capable of absorbing and retaining body fluid, but preferably contains cotton-like pulp and a water-absorbent polymer. As the water-absorbent polymer, a superabsorbent polymer (SAP), a superabsorbent polymer fiber (SAF), or a combination thereof can be used. Examples of the pulp include chemical pulp obtained from wood, cellulose fibers such as dissolving pulp, and artificial cellulose fibers such as rayon and acetate. As a raw material for chemical pulp, hardwood, softwood and the like are used, but softwood is preferably used because of its long fiber length and the like.

In addition, synthetic fibers may be mixed with the absorber 4. As the synthetic fiber, polyolefins such as polyethylene and polypropylene, polyesters such as polyethylene terephthalate and polybutylene terephthalate, polyamides such as nylon, and copolymers thereof can be used, and two of these can be mixed. It can also be used. Further, composite fibers such as core-sheath type fibers having a high melting point fiber as a core and a low melting point fiber as a sheath, side-by-side type fibers, and split type fibers can also be used. In addition, it is also possible to use a hydrophobic fiber whose surface is treated with a hydrophilizing agent to give it an affinity for body fluids.

The absorber 4 may be wrapped with an encapsulating sheet made of crepe paper, non-woven fabric, or the like in order to maintain its shape. As the encapsulating sheet, uncolored (that is, white) crepe paper or non-woven fabric can be used, or colored ones can be used.

The thickness of the absorber 4 can be in the range of 0.5 to 25 mm, preferably in the range of 1.5 to 6.5 mm. The absorber 4 does not have to have a uniform thickness over the front surface, and is a region corresponding to the body fluid discharge port (a region corresponding to the body fluid discharge port) or a region behind the body fluid discharge port corresponding region and facing the groove of the buttocks. Can also have a bulging structure.

The absorber 4 has a size and a shape that does not protrude from the front surface sheet 3 and the back surface sheet 2. That is, the entire absorber 4 is covered with the front surface sheet 3 and the back surface sheet 2, respectively. At the front and rear edge portions of the absorber 4, the outer edges of the back surface sheet 2 and the front surface sheet 3 are joined by an adhesive such as hot melt or an adhesive means such as heat seal or ultrasonic seal. Further, on the side of the absorber 4, that is, outside the width direction D2, side non-woven fabrics 7 and 7 are provided at both ends of the width direction D2 on the surface sheet 3 side along the front-rear direction D1.

As the side non-woven fabric 7, a water-repellent treated non-woven fabric or a hydrophilic-treated non-woven fabric can be used. For example, in the case of enhancing the effect of preventing menstrual blood or vaginal discharge from penetrating or enhancing the feeling of touch, it is preferable to use a water-repellent treated non-woven fabric coated with a silicon-based or paraffin-based water repellent. Further, in the case of enhancing the absorbability of menstrual blood in the wing W, it is preferable to use a hydrophilically treated non-woven fabric as the material of the non-woven fabric. As the type of non-woven fabric, a soft air-through non-woven fabric that does not easily crease and wrinkle is preferable.

(Basic structure of wing)
As shown in FIGS. 1A to 1C, the absorbent article 100 according to the present embodiment has a pair of first wing W1 and second wing W2 extending outward in the width direction D2 of the main body 8 in a plan view. I have. The first wing W1 and the second wing W2 can be configured to be folded back toward the underwear side and / or to be detachably joined to the underwear and / or the wings to each other when the absorbent article 100 is attached. As a result, the absorbent article can be securely fixed to the underwear, so that it is possible to prevent the absorbent article from being displaced or twisted during wearing.

FIG. 2 shows a diagram in which the absorbent article 100 is attached, that is, a state in which the first wing W1 and the second wing W2 are folded back toward the underwear side (the illustration of the underwear is omitted). FIG. 2 is a partially enlarged view of the absorbent article 100 as viewed from the back surface sheet 2 side, as in FIG. 1B. In this example, the first wing W1 and the second wing W2 are configured to be overlapped when folded back to the underwear side. In this case, both wings W1 and W2 are provided at positions symmetrical with respect to the center line CL in the front-rear direction, and at least the width (the length in the width direction D2) exceeds half the width of the main body 8. Is preferable.

In this embodiment, as shown in FIGS. 1A to 1C and FIG. 2, the first wing W1 and the second wing W2 are provided with a first adhesive portion 41 and a second adhesive portion 42 on the back surface sheet 2 side, respectively. Good. Then, as shown in FIG. 2, the adhesive portion 41 and the adhesive portion 42 allow one wing to be attached to the underwear and the other to be attached to the above one at the time of attachment. In the form of FIG. 2, the second wing W2 is directly fixed to the underwear by the second adhesive portion 42, and the first wing W1 is attached to the second wing W2 by the first adhesive portion 41 to be indirectly attached to the underwear. However, the order of superimposing the two wings does not matter. By superimposing and pasting both wings in this way, both wings can be attached to the underwear in a state of being restrained from each other. Therefore, it is possible to enhance the function of the wing that securely fixes the absorbent article to the underwear during wearing.

In the illustrated example, the first adhesive portion 41 provided in the first wing W1 and the second adhesive portion 42 provided in the second wing are overlapped at substantially the same position in a plan view, but the first If the wing W1 and the second wing W2 are directly or indirectly fixed to the underwear, the first adhesive portion 41 and the second adhesive portion 42 do not have to overlap in a plan view.

Further, as long as this embodiment has a function as a wing, the first wing W1 and the second wing W2 folded back at the time of mounting can be attached to the underwear without overlapping each other (described later). May be good.

The pressure-sensitive adhesive portions 41 and 42 may be layers formed by applying a pressure-sensitive adhesive, and may be configured as a tape to which such a pressure-sensitive adhesive layer is applied. As the pressure-sensitive adhesive, for example, a styrene-based polymer, a pressure-sensitive adhesive, a plasticizer, or a combination thereof as a main component is preferably used.

Examples of styrene-based polymers include styrene-ethylene-butylene-styrene block copolymers, styrene-butylene-styrene block copolymers, styrene-isobutylene-styrene copolymers, and styrene-butadiene-styrene block copolymers. , One or more of these can be used. Further, as the tackifier and the plasticizer, those solid at room temperature can be used. Examples of the tackifier include C5 petroleum resin, C9 petroleum resin, dicyclopentadiene petroleum resin, rosin petroleum resin, polyterpene resin, terpene phenol resin and the like. Examples of the plasticizer include monomer plasticizers such as triflesyl phosphate, dibutyl phthalate, and dioctyl phthalate, as well as polymer plasticizers such as vinyl polymers and polyesters.

According to one embodiment of the present invention, at least one wing is not formed by a laterally extending portion of the sheet included in the main body, but a sheet separate from the main body can be detached from the main body. It is formed by being joined to. Hereinafter, embodiments of an absorbent article constructed using such a detachable separate sheet will be described in detail.

(First Embodiment)
First, the absorbent article 100 (FIGS. 1A to 1C and FIG. 2) will be described as the first embodiment. In the absorbent article 100, the first wing W1 is formed by joining the first sheet 21 which is separate from the main body 8 to the back surface sheet 2 side of the main body 8. Further, the second wing W2 is formed by joining a second sheet 22 which is separate from the main body 8 to the back surface sheet 2 side of the main body 8.

As shown in FIGS. 1A to 1C and FIG. 2, each joint of the first sheet 21 and the second sheet 22 (which may be collectively referred to as a wing sheet) to the main body 8 is the first joint portion 31 and the second. It is via the joint portion 32. The details of the configuration of each joint will be described later, but the configurations of the first joint 31 and the second joint 32 may be different, but they may be the same.

The first sheet 21 has a wing portion 21a and an overlapping portion 21b, and the overlapping portion 21b is overlapped with a side portion (outer portion in the width direction D2) of the main body 8 and is joined by a surface. The first joint portion 31 can be formed in an arbitrary range within the overlapping portion 21b in an arbitrary plan view shape. Similarly, the second sheet 22 has a wing portion 22a and an overlapping portion 22b, and the overlapping portion 22b is overlapped with the side portion of the main body 8 and is joined by a surface. The second joint portion 32 can be formed in an arbitrary range within the overlapping portion 22b in an arbitrary plan view shape.

The materials of the first sheet 21 and the second sheet 22 are not particularly limited, but resin films such as olefin resin films such as polyethylene and polypropylene, non-woven fabrics and the like can be used. Further, the first sheet 21 may be a single-layer sheet or a laminated sheet in which a plurality of sheets made of the above-mentioned materials are laminated. When the first sheet 21 is a laminated sheet, for example, the sheet used for the above-mentioned side non-woven fabric 7 may be arranged on the front surface side, and the sheet used for the above-mentioned back surface sheet 2 may be arranged on the back surface side. In that case, it is preferable that the plurality of sheets constituting the laminated sheet are joined by a seal such as a heat seal or an ultrasonic seal, or an adhesive or the like.

The configurations of the first sheet 21 and the second sheet 22 may be the same as or different from each other. However, since the first sheet 21 and the second sheet 22 have the same configuration, the wing portion 21a of the first sheet 21 and the wing portion 22a of the second sheet 22 have the same plan-view shape and size. By having the above, it is possible to provide a well-balanced wearing feeling on the left and right sides.

Normally, when manufacturing an absorbent article with a wing, it is necessary to cut the material to be used (for example, a material for a back sheet or the like) from a flat sheet into a complicated shape having an extending portion for forming a wing. is there. In that case, since a relatively large number of sheet portions are discarded without being used, materials are likely to be wasted. However, as described above, in the present embodiment, the first wing W1 and the second wing W2 are not used as the extending portion of the sheet from the main body 8, but the first sheet 21 and the second sheet which are separate from the main body 8. Since each of the 22 is used, the main body 8 itself can have a simple elongated shape. Therefore, the area of the discarded sheet portion can be reduced, and materials can be saved.

In this embodiment, at least the first sheet 21 is configured to be detachable from the main body 8. As used herein, the term "removable" means that the main body and the seat can be separated from the main body with little or no damage by the force of the hand exerted within the normal life of the user. On the other hand, "non-removable" means that the main body and the seat cannot be separated from the main body with little or no damage due to the force of the hand exerted in the normal life of the user.

The second sheet 22 may or may not be detachable, but even if the second sheet 22 is detachable, the first sheet 21 may be configured to be easier to detach than the second sheet 22. it can. As a result, when the absorbent article is removed from the underwear, the bond between the main body 8 and the first sheet 21 can be preferentially released. Further, as described above, since the main body 8 and the first sheet 21 are joined by a surface, they can be easily peeled off by a normal operation of removing the absorbent article from the underwear, and by extension, the absorbent article with a wing. The article 100 can be easily removed from the underwear.

The removal of the absorbent article 100 according to this embodiment will be described in more detail with reference to the schematic diagram of FIG. FIG. 3A shows a perspective view of the absorbent article 100 attached to the underwear S. FIG. 3 is a view of the attached absorbent article 100 viewed from an angle on the skin side (surface sheet 3 side). FIG. 3B is a diagram showing an intermediate stage of the operation of removing the absorbent article 100 from the underwear S, and FIG. 3C is a diagram showing a state immediately after the absorbent article 100 is removed from the underwear S. Is.

As shown in FIG. 3A, when the absorbent article 100 is attached, both the first wing W1 and the second wing W2 are folded back toward the underwear S side and joined to the underwear S. Then, when removing the attached absorbent article, the user usually holds one end of the main body 8 of the absorbent article 1 in the front-rear direction D1 and pulls it away from the underwear to absorb it from the underwear. Peel off the sex article. For example, as shown by the arrow in FIG. 3A, the user can hold the front end of the main body 8 of the absorbent article 100 and peel the absorbent article 100 from the underwear S. At this time, if the first sheet 21 is easier to separate from the main body 8 than the second sheet 22, the first sheet 21 is preferentially peeled off from the main body 8 as shown in FIG. 3 (b).

Here, this action of peeling off the absorbent article 100 from the underwear S can also be an action of peeling off the joined main body 8 and the first sheet 21. Therefore, the user does not need to apply an excessively large force or change the direction of the force during the operation in order to separate the main body 8 and the wing, and the main body 8 and the first sheet 21 can be separated by a normal removal operation. And can be peeled off to separate the first sheet 21.

Since the joint between the main body 8 and the second sheet 22 can be maintained while the first sheet 21 is peeled off, by further pulling the main body 8 away from the underwear S, as shown in FIG. 3C, The second sheet 22 can be removed from the underwear S together with the main body 8. Further, in the present embodiment, since the folded first wing W1 and the second wing W2 are overlapped and joined, the first sheet 21 is also removed from the underwear S together with the main body 8 and the second sheet 22. Therefore, the entire absorbent part article 100 including the first sheet 21 and the second sheet 22 can be removed from the underwear S in one operation.

As described above, the absorbent article 100 according to the present embodiment is configured to separate the wing by peeling off the main body 8 and the first sheet 21, and forms a fragile portion such as a tear guiding portion. It is different from the one that breaks the wing at the vulnerable part. The method of breaking the wing itself during the removal operation of the absorbent article requires a large force that the user feels a burden depending on the configuration of the fragile part, or is fragile during or during the attachment operation of the absorbent article. There was a possibility that the wing would break at the point, but according to this embodiment, such a possibility can be reduced or eliminated.

Further, in general, since a relatively loud breaking sound is often generated when the material is broken, a relatively loud sound may be generated when the absorbent article is removed from the underwear in the absorbent article of the method of breaking the wing itself. Therefore, when exchanging absorbent articles in a public toilet or the like, many users pay attention to their surroundings during the removal operation. On the other hand, according to this embodiment, since the absorbent article 100 can be removed without breaking the sheet material itself, the concern about breaking noise can be reduced or eliminated.

In the present embodiment, the first sheet 21 is easier to detach than the second sheet 22, but the ease of detachment is the first joint portion 31 for joining the first sheet 21 and the second sheet. It can be made different by the difference in the configuration with the second joint portion 32 for joining the sheet 22.

The first joint portion 31 and the second joint portion 32 (which may be collectively referred to as a joint portion) are, for example, coated with a joint material (adhesive or adhesive) or provided with a tape having a layer of the joint material. It can be formed by doing.

As the bonding material, an adhesive similar to that used in the adhesive portions 41 and 42 can be used. By using such an adhesive for at least the first joint portion 31, the first sheet 21 can be configured to be detachable from the main body 8.

Further, the joint portion can also be formed by using a sealing means such as an ultrasonic seal or a heat seal. By adjusting the output of the sealing means, at least the first sheet 21 can be configured to be detachable from the main body 8.

In the examples shown in FIGS. 1A to 1C and FIG. 2, the first joint portion 31 is two strip-shaped portions extending in the front-rear direction D1 from the front end to the rear end of the region of the overlapping portion 21b of the first sheet 21, that is, the outer portion. It is formed as 31a and an inner portion 32b. Similarly, the second joint portion 32 is also formed as two strip-shaped portions extending in the front-rear direction D1 from the front end to the rear end of the region of the overlapping portion 22b of the second sheet 22, that is, the outer portion 32a and the inner portion 32b. ..

In the second joint portion 32, the outer end of the outer portion 32a is aligned with the outer end of the width direction D2 of the main body 8, preferably the outer end of the outer portion 32a in the width direction D2 is the outer end of the main body 8 in the width direction D2. Arranged to match. Further, the inner portion 32b is arranged so as to be along the inner end of the width direction D2 of the main body 8, preferably so that the inner end of the inner portion 32b in the width direction D2 coincides with the inner end of the main body 8 in the width direction D2. ing.

In this example, in the first joint portion 31, the inner portion 31b is preferably inside the width direction D2 of the inner portion 31b so as to be along the inner end of the width direction D2 of the main body 8 as in the second joint portion 32. The ends are arranged so as to coincide with the inner ends of the main body 8 in the width direction D2. On the other hand, the outer portion 31a is arranged at a position closer to the center line CL in the front-rear direction, more inward than the outer portion 32a of the second joint portion 32. That is, as shown in FIG. 2, the distance d1 from the front-rear direction center line CL to the outer end of the width direction D2 of the outer portion 31a of the first joint portion 31 is the outer portion from the front-rear direction center line CL to the second joint portion 32. It is shorter than the distance d2 to the outer end of D2 in the width direction of 32a.

If the arrangement of the first joint portion 31 and the second joint portion 32 is different as described above, for example, when the absorbent article 100 is removed from the underwear, the main body 8 is held by the front end of the main body 8 to form a surface sheet. When the main body 8 is lifted to the 3rd side and pulled backward, the main body 8 tends to tilt toward the 2nd wing W2 side (FIG. 3).

More specifically, such a movement can be explained as follows. When the detachment of the first sheet 21 and the second sheet 22 in the removal operation of the absorbent article 100 from the front is considered independently, the position P1 at which the detachment (peeling) of the first sheet 21 starts is as shown in FIG. , It may be near the outer end of D2 in the width direction of the front end of the outer portion 31a. Similarly, the position where the second sheet 22 starts to separate (peel off) (the position where the most force is applied by the removing operation of the absorbent article when the second sheet 22 is joined in a non-removable manner) P1 is the outer portion. It may be near the outer end of D2 in the width direction of the front end of 32a. Here, since the arrangement of the first joint portion 31 and the second joint portion 32 is different as described above, the positions where the first sheet 21 and the second sheet 22 start to separate (disengagement start positions) P1 and P2 Is non-axisymmetric with respect to the center line CL in the front-rear direction, so that the main body 8 is peeled off from the first sheet 21 in advance. Then, as the removal operation of the absorbent article 100 is continued, the first sheet 21 that has been peeled off in advance is further peeled off, and the first sheet 21 can be easily separated.

The distance d2 from the front-rear center line CL to the outer end of the outer portion 32a of the second joint portion 32 in the width direction D2 and the outer end of the outer portion 31a of the first joint portion 31 in the front-rear direction D2 in the width direction. The difference Δd (d2-d1) from the distance d1 is preferably more than 0% and 25% or less, and more preferably more than 0% and 15% or less of the width of the main body 8. By setting Δd in the above value range, it is possible to improve the above-mentioned function that the main body 8 can be easily tilted to the second wing W2 when the absorbent article 100 is removed from the front, and the first wing can be improved. The function as a wing of W1 can also be guaranteed.

In the illustrated example, each joint is formed in a strip shape extending in the front-rear direction D1, but the joint may be composed of three or more strip-shaped portions. Further, the joint portion may extend over the entire overlapping portion 21b or 22b, or may be composed of a plurality of island-shaped small portions.

In the absorbent article 100 according to the present embodiment, the main body 8 is manufactured, the first sheet 21 and the second sheet 22 are cut out by a cutter or the like having a shape corresponding to the sheet shape (wing shape), and then the first sheet 21 And the second sheet 22 can be manufactured by joining them to predetermined positions of the main body 8, respectively. When the first sheet 21 and the second sheet 22 are cut out, when these sheets are laminated sheets, the sheets to be laminated may be cut out into a finished shape and then laminated, or the sheets to be laminated may be laminated. You may cut it into the finished shape after making it. Alternatively, the main body 8 is roughly manufactured, and after joining the sheets having a size that can be cut out to the first sheet 21 and the second sheet 22 to the sides of the main body 8, respectively, the main body 8 has a shape corresponding to the finished shape of the absorbent article. It can be cut with a cutter or the like.

(Modification example)
FIG. 4 shows a modified example of the joint portion in the first embodiment. In the example of FIG. 4, the second joint portion 32 forming the joint between the main body 8 and the second sheet 22 is the same as the examples shown in FIGS. 1A to 2, but the main body 8 and the first sheet 21 are joined. The arrangement of the first joint portion 31 forming the above is different. In this example, the first joint portion 31 is composed of an outer portion 31a and an inner portion 31b arranged along the front-rear direction D1, but the front ends of both the outer portion 31a and the inner portion 31b are the second joint portions. It is located behind the front end of 32.

Also in this example, the positions P1 and P2 at which the first sheet 21 and the second sheet 22 start to separate (disengagement start positions) are non-axisymmetric with respect to the center line CL in the front-rear direction. Therefore, in the removing operation of the absorbent article 100, for example, when the main body 8 is pulled by holding the front end, the main body 8 may be peeled off from the first sheet 21 in advance. Then, by continuing the removal operation of the absorbent article 100, the first sheet 21 that has been peeled off in advance is further peeled off, and the first sheet 21 can be easily separated.

The distance ΔL (FIG. 4) between the front end of the second joint portion 32 and the front end of the first joint portion 31 in the front-rear direction D1 is more than 0% of the length of the overlapping portion 21b of the first sheet 21 in the front-rear direction D1. It is preferably 15% or less. By setting ΔL in the above range, it is possible to improve the above-mentioned function that the main body 8 can be easily tilted to the second wing W2 when the absorbent article 100 is removed from the front, and the first wing W1 can be improved. The function as a wing can also be guaranteed.

In the example of FIG. 4, neither the outer portion 31a nor the inner portion 31b of the first joint portion 31 has a continuous band shape in the front-rear direction D1 and is intermittent in the front-rear direction D1. Therefore, the joint strength of the first joint portion 31 as a whole is reduced, and the first joint portion 31 is more easily peeled off from the main body 8.

In each of the examples of FIGS. 3 and 4, the ease of peeling of the first sheet 21 is improved by making the first joint portion 31 and the second joint portion 32 different in plan view shape. Therefore, according to these examples, the same joining material can be used in the first joining portion 31 and the second joining portion 32, and the labor for manufacturing can be reduced.

FIG. 5 shows another modification of the joint portion in the first embodiment. In the example of FIG. 5, the area and the planar shape of the first joint portion 31 and the second joint portion 32 are the same, but the types of joint materials used in the first joint portion 31 and the second joint portion 32 are selected. It makes a difference. For example, the type of the first joint portion 31 is selected so that the joint strength per unit area is smaller than the joint strength per unit area of the second joint portion 32.

In this example, in the removing operation of the absorbent article 100, the first sheet 21 joined by the first joining portion 31 begins to peel off preferentially over the second sheet 22. Therefore, as the removal operation is continued, the main body 8 is tilted toward the second wing W2 (second sheet 22), the first sheet 21 is peeled off, and the first sheet 21 can be peeled off in advance. ..

Further, the joining material used for the second joining portion 32 can be selected so that the second sheet 22 cannot be separated from the main body 8. In that case, since the peeling of the first sheet 21 is surely preceded, the absorbent article 100 can be removed more smoothly.

FIG. 6 shows a modified example of the first embodiment. In this example, the folded first wing W1 and the second wing W2 are configured so as not to overlap with the absorbent article 100 attached to the underwear. More specifically, the first wing W1 and the second wing W2 are both short, that is, the first sheet 21 and the second sheet 22 are both short. In such a case, in the removing operation of the absorbent article 100, when the main body 8 and the first sheet 21 are peeled off in advance and then the main body 8 is further pulled, the main body 8 and the main body 8 are joined to each other. The two sheets 22 are removed together, and the first sheet 21 remains affixed to the underwear. In this case, the user can remove the first sheet 21 by hand.

The individual features of the joints described above can be combined with each other. For example, while the first joint portion 31 and the second joint portion 32 have a plan view shape as shown in FIG. 2, the joint materials used for the first joint portion 31 and the second joint portion 32 are different, and the first joint portion is formed. It can also be configured so that the joint strength per unit area of 31 is smaller than the joint strength per unit area of the second joint portion 32.

Further, in any of the examples of the first embodiment, the configurations of the first wing W1 and the second wing W2 may be interchanged. That is, for example, in FIG. 1A, the second wing W2 on the right side can be at least detachable, and the second wing W2 can be configured to be easier to detach than the first wing W1.

Further, FIG. 7 shows another modification of the first embodiment. In this example, the configurations of the first joint portion 31 and the second joint portion 32 are the same. That is, both the first sheet 21 and the second sheet 22 can be detached, and the ease of detachment is the same. In the example described with reference to FIGS. 1A to 6, the first sheet 21 was easier to separate than the second sheet 22 in the removing operation of the absorbent article 100, but in this example, the first sheet 21 Since the ease of detachment of the second sheet 22 is the same, which of the first sheet 21 and the second sheet 22 is detached is determined depending on the direction of the user's removal operation.

For example, in the removal operation of the absorbent article 100, when the user pulls the absorbent article 100 from the underwear by holding the front end of the main body 8 as in FIG. 3, the environment and posture in which the absorbent article 100 is intentionally or removed. Depending on the situation, the main body 8 may be naturally tilted to the right side, that is, to the second seat 22 side. In that case, as a result, the first sheet 21 can be preferentially peeled off and separated as in FIG. Further, by pulling the main body 8, the main body 8 and the second sheet 22 can be removed from the underwear. Then, if the first sheet 21 is joined to the second sheet 22, the entire absorbent article 100 can be removed from the underwear as in FIG.

(Second Embodiment)
FIG. 8A shows the absorbent article 200 according to the second embodiment. FIG. 8A is a plan view of the absorbent article 200 as viewed from the surface sheet 3 side. Further, FIG. 8B shows a sectional view taken along line II-II of FIG. 8A. In the absorbent article 200, the configuration of the first wing W1 is the same as that of the first embodiment, but is different from the first embodiment in that the second wing W2 is not formed by joining the sheets.

As shown in FIGS. 8A and 8B, in the absorbent article 200, the side non-woven fabric 7 and the back surface sheet 2 extend outward on the one side in the width direction D2, respectively. Then, these sheets are joined by a heat seal, an ultrasonic seal seal, or an adhesive to form the second wing W2. Therefore, in the present embodiment, the second wing W2 cannot be separated.

Also in this embodiment, the first sheet 21 is first peeled off from the main body 8 in the operation of removing the absorbent article 200, for example, the operation of holding the front end of the main body 8 and peeling it off from the underwear as shown in FIG. Therefore, it is possible to peel off the main body 8 and the first sheet 21 by a normal removing operation and remove the absorbent article 200 from the underwear without applying an excessively large force or changing the direction of the force during the operation. it can.

In this embodiment, since there is no possibility that the second wing W2 will come off, at least the function of the second wing W2 as a wing is ensured even if an excessive force is applied during or during the mounting operation of the absorbent article 200. .. Therefore, the absorbent article 200 can be securely fixed to the underwear.

Further, in the case of this embodiment, it is not necessary to use a bonding material on the second wing W2 side. Therefore, this embodiment is preferable from the viewpoint of saving the bonding material.

2 Back sheet 3 Front sheet 4 Absorbent 7 Side non-woven fabric 8 Main body (absorbent article main body)
21 1st sheet 21a Wing part of 1st sheet 21b Overlapping part of 1st sheet 22 2nd sheet 22a Wing part of 2nd sheet 22b Overlapping part of 2nd sheet 31, 31a, 31b 1st joint part 32, 32a, 32b 2nd joint 41, 42 Adhesive part 100, 200 Absorbent article CL Front-back direction center line D1 1st direction (front-back direction)
D2 2nd direction (width direction)
P1 First wing seat withdrawal start position P2 Second wing seat withdrawal start position W1 First wing W2 Second wing

Claims (8)

An absorbent article comprising a main body having a liquid-permeable front surface sheet, an impermeable back surface sheet, and an absorber provided between the front surface sheet and the back surface sheet.
The main body has a front-rear direction and a width direction orthogonal to the front-rear direction.
It is provided with a pair of first and second wings extending outward in the width direction of the main body.
At least the first wing is an absorbent article formed by detachably joining a first sheet separate from the main body to the main body. The second wing is formed by joining a second sheet, which is separate from the main body, to the main body.
The absorbent article according to claim 1, wherein the first sheet is easier to separate from the main body than the second sheet. The first sheet and the second sheet are joined to the main body via the first joint and the second joint, respectively.
The absorption according to claim 2, wherein the distance from the center line extending in the front-rear direction to the outer end of the first joint in the width direction is shorter than the distance of the second joint to the outer end in the width direction. Sex goods. The first sheet and the second sheet are joined to the main body via the first joint and the second joint, respectively.
A claim that the front end of the first joint is located posterior to the front end of the second joint and / or the rear end of the first joint is located anterior to the rear end of the second joint. Item 2. The absorbent article according to Item 2 or 3. The first sheet and the second sheet are joined to the main body via the first joint and the second joint, respectively.
The absorbent article according to any one of claims 2 to 4, wherein the joint strength per unit area of the first joint portion is smaller than the joint strength per unit area of the second joint portion. The absorbent article according to claim 1, wherein the second wing is inseparable from the main body. The main body is provided with side non-woven fabrics along the front-rear direction at both ends in the width direction on the surface sheet side.
The absorbency according to claim 6, wherein each of the back surface sheet and the side non-woven fabric has an extending portion outward in the width direction, and the second wing has both extending portions joined to each other. Goods. The first wing and the second wing each have a first adhesive portion and a second adhesive portion on the back surface sheet side.
Any one of claims 1 to 7, wherein the first wing and the second wing are folded back toward the underwear side at the time of mounting, overlapped, and bonded by the first adhesive portion or the second adhesive portion. Absorbent article described in.

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