JP2019171815A - Laminate, packaging material and package - Google Patents

Abstract

To provide a laminate capable of producing a package having high opening easiness and strength.SOLUTION: A laminate includes a base material, and a sealant layer having a laminate layer and a seal layer. The laminate layer contains a C-4 LLDPE and a LDPE. The content of LDPE in the laminate layer is 25 mass% or more.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a laminate, a packaging material using the laminate as a constituent material, and a package.

  As a container for filling foods, beverages, detergents, bleaching agents, and the like, a packaging material that is produced by heat-sealing a resin film or the like and has an opening for filling contents is used.

  Depending on the type of resin film that constitutes the packaging material, it cannot be easily torn, and when the packaging material opening is heat-sealed and the produced package is opened, the contents may leak. There is. Therefore, in order to improve the ease of opening, various processes have been applied to the package.

  For example, in patent document 1, the curved part which the package body curved inside is provided.

  However, the conventional packaging body having a curved portion has a problem that the impact at the time of dropping or the like tends to concentrate on the curved portion, and it is easy to break the bag, and the strength improvement of the packaging body has been demanded.

Japanese Patent Laying-Open No. 2015-147582

Surprisingly, the present inventors, in a laminate including a base material and a sealant layer including a laminate layer and a seal layer, include C-4LLDPE and 25% by mass or more of LDPE in the laminate layer, thereby The knowledge that the ease of opening and strength of a package produced using the laminate can be remarkably improved was obtained.
Therefore, the problem to be solved by the present invention is to provide a laminate capable of producing a package having high unsealing ease and strength.
Moreover, the problem to be solved by the present invention is to provide a packaging material and a packaging body having the laminate as a constituent material.

  The laminate of the present invention includes a base material and a sealant layer including a laminate layer and a seal layer, the laminate layer includes C-4LLDPE and LDPE, and the content of LDPE in the laminate layer is 30% by mass or more. It is characterized by being.

  In the said aspect, it is preferable that a sealing layer contains C-4LLDPE.

  In the said aspect, it is preferable that a sealing layer contains C-6LLDPE.

  In the said aspect, it is preferable that content ratio (C-4LLDPE / LDPE) of C-4LLDPE and LDPE in a laminate layer is 25/75 or more and 75/25 or less on a mass basis.

  In the above aspect, the ratio of the thickness of the seal layer to the laminate layer (the thickness of the seal layer / the thickness of the laminate layer) is preferably 5/100 or more and 40/100 or less.

  In the said aspect, it is preferable that the thickness of a laminate layer is 25 micrometers or more and 190 micrometers or less.

  In the said aspect, it is preferable that the thickness of a sealing layer is 5 micrometers or more and 55 micrometers or less.

  In the said aspect, it is preferable that content of LDPE in a seal layer is 5 mass% or less.

  The packaging material of the present invention is characterized in that the laminate is a constituent material.

  The package of the present invention is characterized in that the laminate is a constituent material, and the filled content contains at least one of a surfactant and hydrogen peroxide.

  ADVANTAGE OF THE INVENTION According to this invention, the laminated body which can produce the package which has high opening ease and intensity | strength can be provided.

FIG. 1 represents a schematic cross-sectional view of the laminate of the present invention. FIG. 2 shows a front view of a packaging body comprising the laminate of the present invention as a constituent material.

(Laminate)
As shown in FIG. 1, the laminate 10 of the present invention includes a base material 11 and a sealant layer 14 including a laminate layer 12 and a seal layer 13.

(Base material)
Examples of the base material include polyesters such as polyethylene terephthalate (PET), polybutylene terephthalate (PBT), polyethylene naphthalate (PEN), polyethylene terephthalate-isophthalate copolymer, and terephthalic acid-cyclohexanedimethanol-ethylene glycol copolymer. Resin, polyamide resin such as nylon 6 and nylon 6,6, polyolefin resin such as polyethylene (PE), polypropylene (PP) and polymethylpentene, polyvinyl chloride, polyvinyl alcohol (PVA), polyvinyl acetate, chloride Vinyl-vinyl acetate copolymer, ethylene-vinyl acetate copolymer, vinyl resins such as polyvinyl butyral and polyvinyl pyrrolidone (PVP), polyacrylate, polymethacrylate and polymer (Meth) acrylic resins such as rumethacrylate, polyimide resins such as polyimide and polyetherimide, styrene resins, cellophane, cellulose acetate, nitrocellulose, cellulose acetate propionate (CAP) and cellulose acetate butyrate ( A film composed of a cellulose resin such as CAB) (hereinafter simply referred to as “resin film”) can be used.
Among the above-described resins, polyester resins such as PET and polyamide resins such as nylon 6 are preferable from the viewpoint of strength when used as a package and ease of opening. In addition, these resins absorb the laser beam when the packaging material or package produced by the laminate of the present invention is irradiated with a carbon dioxide laser, and partially disappear to form a cut-out portion. Is preferable.
In the present invention, “(meth) acryl” means to include both “acryl” and “methacryl”.
Further, the resin film may be unstretched, uniaxially stretched, or biaxially stretched, but from the viewpoint of mechanical strength, the resin film is biaxially stretched. Preferably there is.

  Moreover, you may use the laminated body of the above-mentioned resin film as a base material, For example, what laminated | stacked PET film and the polyamide-type resin film via the conventionally well-known adhesive agent is mentioned.

The base material may be provided with a vapor deposition film, whereby the gas barrier property of the laminate of the present invention can be improved.
Examples of the deposited film include silicon (Si), aluminum (Al), magnesium (Mg), calcium (Ca), potassium (K), tin (Sn), sodium (Na), boron (B), and titanium (Ti). ), Lead (Pb), zirconium (Zr), yttrium (Y) and the like, or a deposited film containing an inorganic oxide can be used.

Representation of the inorganic oxide, for _example, SiO X, as such AlO _X MO _X (In the formula, M represents an inorganic element, the value of X, varies each of an inorganic element range.) In expressed. As a range of the value of X, silicon (Si) is 0 to 2, aluminum (Al) is 0 to 1.5, magnesium (Mg) is 0 to 1, calcium (Ca) is 0 to 1, 0 to 0.5 for potassium (K), 0 to 2 for tin (Sn), 0 to 0.5 for sodium (Na), 0 to 1.5 for boron (B), titanium (Ti) Can take values ranging from 0 to 2, lead (Pb) from 0 to 2, zirconium (Zr) from 0 to 2, and yttrium (Y) from 0 to 1.5. In the above, when X = 0, it is a complete inorganic simple substance (pure substance) and is not transparent, and the upper limit of the range of X is a completely oxidized value. Silicon (Si) and aluminum (Al) are suitably used for the packaging material, silicon (Si) is in the range of 1.0 to 2.0, and aluminum (Al) is in the range of 0.5 to 1.5. Can be used.

  In the present invention, the film thickness of the inorganic or inorganic oxide deposited film as described above varies depending on the type of the inorganic or inorganic oxide used, but is, for example, about 50 to 2000 mm, preferably about 100 to 1000 mm. It is desirable to select and form arbitrarily within the range.

  As a method for forming a vapor deposition film, for example, a physical vapor deposition method (Physical Vapor Deposition method, PVD method) such as a vacuum vapor deposition method, a sputtering method, and an ion plating method, a plasma chemical vapor deposition method, a thermochemistry, or the like. Examples thereof include a chemical vapor deposition method (chemical vapor deposition method, CVD method) such as a vapor deposition method and a photochemical vapor deposition method.

  In order to improve the adhesion between adjacent layers, it is preferable to perform surface activation treatment such as corona treatment, flame treatment, plasma treatment, or flame treatment on the surface of the substrate.

In addition, images of characters, patterns, symbols, and the like may be formed on the surface of the base material. Since it is possible to prevent deterioration of the image over time, it is preferable to form an image on the side of the base material on which the laminate layer is laminated.
The image forming method is not particularly limited, and examples thereof include conventionally known printing methods such as gravure printing, offset printing, and flexographic printing. Among these, the gravure printing method is preferable from the viewpoint of productivity.
Further, the colorant used for image formation is not particularly limited. For example, titanium white, zinc white, petal, vermilion, ultramarine, cobalt blue titanium yellow, yellow lead, carbon black and other inorganic pigments, Organic pigments (including dyes) such as indolinone yellow, Hansa yellow A, quinacridone red, permanent red 4R, phthalocyanine blue, indanthrene blue RS, aniline black, metal pigments made of metal powders such as aluminum and brass, dioxide A pearlescent pigment made of a foil powder such as titanium-coated mica and basic lead carbonate, a fluorescent pigment, and the like can be used.

  The thickness of the substrate is preferably 5 μm or more and 60 μm or less, and more preferably 6 μm or more and 40 μm or less. By making the thickness of the substrate within the above numerical range, the ease of opening and strength of the package can be further improved.

  The above-described resin film may be produced by a conventionally known method such as an inflation method or a T-die method, or may be commercially available.

(Sealant layer)
The sealant layer includes a laminate layer and a seal layer.

  The thickness of the sealant layer is preferably 30 μm or more and 200 μm or less, and more preferably 80 μm or more and 150 μm or less. By making the thickness of the sealant layer within the above numerical range, the ease of opening and strength of the package can be further improved.

  The thickness ratio of the seal layer to the laminate layer (seal layer / laminate layer) is preferably 5/100 or more and 40/100 or less, preferably 10/100 or more and 30/100 or less. Is more preferable. By making these thickness ratios within the above numerical range, the ease of opening and strength of the package can be further improved.

  A sealant layer can be laminated | stacked with a base material through a conventionally well-known adhesive agent. In addition, this lamination is performed so that a base material and a laminate layer may contact | connect.

(Laminate layer)
The laminate layer included in the sealant layer includes C-4LLDPE and LDPE. In the present invention, C-4LLDPE refers to a copolymer of ethylene and an α-olefin having 4 carbon atoms.
In the present invention, the density of LDPE and C-4LLDPE is less than 0.931 g / cm ³ .

  The content of C-4LLDPE in the laminate layer is preferably 25% by mass or more and 75% by mass or less, and more preferably 30% by mass or more and 50% by mass or less. By setting the content of C-4LLDPE in the laminate layer within the above numerical range, the drop strength can be further improved while maintaining the ease of opening the package.

  The content of LDPE in the laminate layer is 25% by mass or more, preferably 30% by mass or more and 75% by mass or less, and more preferably 35% by mass or more and 50% by mass or less. By setting the content of LDPE in the laminate layer within the above numerical range, it is possible to further improve the ease of opening while maintaining the strength of the package.

  The content ratio of C-4LLDPE to LDPE (C-4LLDPE / LDPE) in the laminate layer is preferably 25/75 or more and 75/25 or less, and 50/50 or more, 70/30 on a mass basis. The following is more preferable. Thereby, the opening ease and intensity | strength of a package can be improved more.

  The laminate layer can contain a resin material other than C-4LLDPE and LDPE as long as the properties of the present invention are not impaired. Examples of the resin material include polyester resins, polyamide resins, polyolefin resins, vinyl resins, (meth) acrylic resins, polyimide resins, styrene resins, and cellulose resins.

  The laminate layer preferably contains a slip agent. When the laminate layer contains a slip agent, the processability of the package can be improved.

  Examples of the slip agent include oleic acid amide, erucic acid amide, stearic acid amide, behenic acid amide, ethylene bisoleic acid amide, and ethylene biserucic acid amide.

  The content of the slip agent in the laminate layer is preferably 0.01% by mass or more and 5% by mass or less, and more preferably 0.1% by mass or more and 3% by mass or less. By making the content of the slip agent in the laminate layer within the above numerical range, the processability of the package can be further improved.

  In addition, the laminate layer is a wax, a filler, a plasticizer, an antistatic agent, an ultraviolet absorber, an antioxidant, an antiblocking agent, a colorant such as a pigment and a dye, and a fluorescent coloring, as long as the characteristics of the present invention are not impaired. An additive such as a material may be included.

  The thickness of the laminate layer is preferably 25 μm or more and 190 μm or less, and more preferably 60 μm or more and 140 μm or less. By setting the thickness of the laminate layer within the above numerical range, the ease of opening and the strength of the package can be further improved.

  The laminate layer can be produced by heat-melting, coextruding, and forming a resin composition containing the above-described material and a resin composition used for forming a seal layer described later.

  Further, the laminate of the present invention may be provided with two or more laminate layers, and in this case, these may have the same configuration or different configurations.

(Seal layer)
The seal layer provided in the sealant layer can contain a thermoplastic resin, for example, a polyester resin, a vinyl resin, a (meth) acrylic resin, a (meth) acrylic resin, a polyurethane resin, a cellulose resin, and a melamine. Resin, polyamide resin, polyolefin resin, styrene resin and the like.
Among the above, it is preferable to include a polyolefin resin.
Among polyolefin-based resins, it is preferable to contain C-4LLDPE in the seal layer, and thereby the strength of the package can be further improved.
Moreover, it is preferable to contain C-6LLDPE in a sealing layer among polyolefin-type resin, and this can improve the intensity | strength of a package body more. In addition, when a conventional package is filled with a content containing a surfactant or hydrogen peroxide, the heat seal portion may be eroded over time and the content may leak. However, the occurrence of leakage of the contents can be prevented by containing C-6LLDPE in the seal layer.
In the present invention, C-6LLDPE refers to a copolymer of ethylene and an α-olefin having 6 carbon atoms. In the present invention, the density of C-6LLDPE is less than 0.931 g / cm ³ .

The content of the thermoplastic resin in the seal layer is preferably 50% by mass or more and 100% by mass or less, and more preferably 60% by mass or more and 99% by mass or less.
Moreover, when a sealing layer contains C-4LLDPE, it is preferable that the content is 25 to 80 mass%, and it is more preferable that it is 40 to 75 mass%. By making content of C-4LLDPE in a sealing layer into the said numerical range, intensity | strength can be improved more, maintaining the ease of opening of a package.
Moreover, when a sealing layer contains C-6LLDPE, it is preferable that the content is 25 to 75 mass%, and it is more preferable that it is 25 to 60 mass%. By making the content of C-6LLDPE in the sealing layer within the above numerical range, the strength can be further improved while maintaining the ease of opening the package, and the occurrence of leakage of contents is effectively prevented. Can be prevented.

  When the sealing layer contains C-4LLDPE and C-6LLDPE, the content ratio of C-4LLDPE to C-6LLDPE in the sealing layer (C-4LLDPE / C-6LLDPE) is 25/75 or more on a mass basis, It is preferably 75/25 or less, more preferably 50/50 or more and 70/30 or less. As a result, the ease of opening and strength of the package can be further improved, and leakage of contents can be effectively prevented.

  Further, the content of LDPE in the seal layer is preferably 5% by mass or less, more preferably 3% by mass or less, still more preferably 1% by mass or less, and inevitably included. It is particularly preferable not to contain any of them. By setting the content of LDPE in the seal layer within the above numerical range, the strength of the package can be further improved.

  The seal layer can contain the resin material and the additive as long as the characteristics of the present invention are not impaired.

  The thickness of the seal layer is preferably 5 μm or more and 55 μm or less, and more preferably 10 μm or more and 40 μm or less. By making the thickness of the sealing layer within the above numerical range, the ease of opening and strength of the package can be further improved.

The seal layer can be produced by heat-melting, coextruding, and forming a resin composition containing the above-described material and a resin composition used for forming a laminate layer described later.
The MFR of the resin composition used for forming the seal layer is preferably 0.1 g / 10 min or more and 3.5 m / 10 min or less, preferably 0.1 m / 10 min or more and 3.3 m / 10 min or less. It is more preferable that By setting the MFR of the resin composition used for forming the seal layer within the above numerical range, it is possible to more effectively prevent the leakage of the contents.
In the present invention, the MFR of the resin composition is measured according to JIS K 6922-1.

  Further, the laminate of the present invention may be provided with two or more sealing layers, and in this case, these may have the same configuration or different configurations.

(Other layers)
The laminate of the present invention may include other layers between the base material and the sealant layer.
The stacking resistance of the present invention may include a gas barrier layer as another layer, and includes, for example, a metal foil such as aluminum or magnesium, a gas barrier resin such as an ethylene-vinyl alcohol copolymer, a polyamide-based resin, or the like. Examples thereof include a resin layer.

(Packaging material)
The packaging material of this invention contains the said laminated body as a structural material.
In one embodiment, the packaging material can be produced by stacking two laminated bodies so that the sealing layers face each other and heat-sealing the peripheral edge except for one side that becomes the opening.
Moreover, in another form, it can produce by folding one laminated body so that a sealing layer may become inside, and heat-sealing a peripheral edge part except one side used as an opening part.
In addition, a cylindrical body can be produced by heat-sealing the laminated body, and a standing pouch-type packaging material can be produced by heat-sealing with the bottom material made of the laminated body or other materials. it can.

The form of the package is not particularly limited. For example, a side seal type, a two-side seal type, a three-side seal type, a four-side seal type, an envelope-attached seal type, a palm-attached seal type (pillow seal type), a pleated seal type, Flat bottom seal type, square bottom seal type, and gusset type may be mentioned.
The sealing method is not limited to heat sealing, and can be performed by using impulse sealing, high frequency sealing, ultrasonic sealing, or the like.

(Packaging body)
The package of the present invention can be produced by filling the packaging material with the contents and heat-sealing the opening.

  The content filled in the package is not particularly limited, and may be a food or beverage, or a non-food such as a shampoo, rinse, detergent, or bleach.

The package 20 may include a dispensing nozzle portion 21 as shown in FIG. 2 when the contents are a liquid, a viscous body, or a powder.
Further, from the viewpoint of easy opening, the package 20 may include a curved portion 22 curved inward as shown in FIG.
Furthermore, you may provide the cut-out part 23 formed with a laser beam etc.

  EXAMPLES Next, although an Example is given and this invention is demonstrated further in detail, this invention is not limited to these Examples. Unless otherwise specified, all blending amounts and blending ratios are based on mass.

Example 1
As a base material, a 15 μm thick polyamide-based resin film (manufactured by Unitika Ltd., ON-RT) was prepared.

Moreover, C4-LLDPE (manufactured by Prime Polymer Co., Neozex 2012F, MFR: 1.5 g / 10 min, density: 0.920) and LDPE (manufactured by Nippon Polyethylene Co., Ltd., LF441MD1, MFR: 2.0 g / m) by inflation method. 10 minutes, density: 0.924) and a slip agent (Sumitomo Chemical Co., EMB-10) in a ratio of 65: 34: 1, and C4-LLDPE (Prime Polymer Co., Ltd.) Manufactured by Neozex 2012F, MFR: 1.5 g / 10 min, density: 0.920) and C6-LLDPE (manufactured by Prime Polymer, Evolue SP1520, MFR: 2.0 g / 10 min, density: 0.913) A resin composition (B) containing a slip agent (EMB-10, manufactured by Sumitomo Chemical Co., Ltd.) at a ratio of 68: 31: 1, By the method, the resin composition (A) is formed into a laminate layer, and the resin composition (B) is formed into a seal layer to produce a laminated film composed of a laminate layer having a thickness of 100 μm and a seal layer having a thickness of 30 μm. did.
The MFR of the resin composition (A) was 1.7 g / 10 minutes, and the density was 0.921.
Moreover, MFR of the resin composition (B) was 1.7 g / 10min, and the density was 0.918.

  The base material and the laminate layer of the laminated film produced as described above were laminated via an adhesive (manufactured by Rock Paint Co., Ltd., RU-40 / H-4) to produce the laminate of the present invention. .

Example 2
A laminate of the present invention was produced in the same manner as in Example 1 except that the thickness of the laminate layer included in the laminate film was changed to 110 μm and the thickness of the seal layer was changed to 20 μm.

Example 3
The resin composition (A) used for forming the laminate layer was obtained by using C4-LLDPE (Prime Polymer Co., Neozex 2012F, MFR: 1.5 g / 10 min, density: 0.920) and LDPE (Nippon Polyethylene Co., Ltd.). , LF441MD1, MFR: 2.0 g / 10 min, density: 0.924), and slip agent (Sumitomo Chemical Co., EMB-10) in a ratio of 50: 49: 1 (C) In addition, the resin composition (B) used for forming the seal layer was prepared by using C4-LLDPE (Prime Polymer, Neozex 2012F, MFR: 1.5 g / 10 min, density: 0.920) and C6-LLDPE (prime). Polymer, Evolue SP1520, MFR: 2.0 g / 10 min, density: 0.913) and slip agent (Sumitomo Chemical Co., EMB-10) 49: was changed to the resin composition (D) in a proportion of 1, in the same manner as in Example 1 to prepare the laminate of the present invention.
The resin composition (C) had an MFR of 1.8 and a density of 0.922.
Moreover, MFR of the resin composition (D) was 1.8, and the density was 0.917.

Example 4
The resin composition (D) used for forming the seal layer was prepared by adding C4-LLDPE (Prime Polymer Co., Ltd., Neozex 2012F, MFR: 1.5 g / 10 min, density: 0.920) and a slip agent to 99: A laminate was prepared in the same manner as in Example 3 except that the resin composition (E) contained at a ratio of 1 was used.

Comparative Example 1
The resin composition (A) used for the laminate layer formation and the resin composition (B) used for the seal layer formation were C4-LLDPE (manufactured by Prime Polymer Co., Neozex 2012F, MFR: 1.5 g / 10 min, density: 0.920), LDPE (Nippon Polyethylene, LF441MD1, MFR: 2.0 g / 10 min, density: 0.924) and slip agent (Sumitomo Chemical, EMB-10): 89: A laminate of the present invention was produced in the same manner as in Example 1 except that the resin composition (F) contained at a ratio of 10: 1 was used.

Comparative Example 2
A laminate was produced in the same manner as in Example 1 except that the resin composition (A) used for forming the laminate layer was changed to the resin composition (F).

Comparative Example 2
A laminate was produced in the same manner as in Example 1 except that the resin composition (A) used for forming the laminate layer was changed to the resin composition (E).

Example 4
The resin composition (A) used for forming the laminate layer was prepared by adding C6-LLDPE (Prime Polymer Co., Ltd., Evolue SP1520, MFR: 2.0 g / 10 min, density: 0.913) and a slip agent to 99: A laminate was produced in the same manner as in Example 1 except that the resin composition (E) contained at a ratio of 1 was used.
A 15 μm thick polyamide-based resin film (ON-RT, manufactured by Unitika Ltd.) and a 130 μm thick PE film (manufactured by Aicello Co., Ltd., L-103) are bonded to an adhesive (manufactured by Rock Paint Co., Ltd.). , RU-40 / H-4) to produce a bottom material.

A cylindrical body was produced by heat-sealing the laminate of the present invention produced in Example 1 so that the seal layer was on the inside. The sealing layer of the trunk portion and the PE film of the laminate prepared as the bottom material are heat sealed, a cut portion is formed by irradiating a carbon dioxide laser, and the nozzle portion for pouring shown in FIG. And the packaging material which formed the curved part and has the opening part of one side was produced. This packaging material was filled with 500 g of water and the remaining side was heat-sealed to produce a standing pouch-type package.
The package produced as described above was opened, and its ease was evaluated based on the following evaluation criteria. The evaluation results are summarized in Table 1.
(Evaluation criteria)
A: The container could be opened with almost no force.
NG: It was necessary to apply a strong force, and there were practical problems such as elongation and tearing

<< Strength test >>
The package produced in the openability test was cooled at 5 ° C. for 24 hours, and then freely dropped from a height of 120 cm to a hard floor 10 times with the trunk of the package horizontal to the ground. The test was performed 10 bags at a time, the presence or absence of breakage was visually observed, and the strength was evaluated based on the following evaluation criteria. The evaluation results are summarized in Table 1.
A: Damage could not be confirmed in all 10 bags. NG: Damage was confirmed in 1 or more of 10 bags, and there was a problem in practical use.

<< Leakage prevention test >>
Two sheets were prepared by cutting the laminates obtained in each Example and Comparative Example into a size of 150 mm × 150 mm. These were overlapped so that the seal layers face each other, and three sides except one side were heat sealed (heat seal temperature: 160 ° C., heating time: 1 second, seal width: 10 mm) to form a packaging material.

  The packaging material produced as described above was filled with 70 g of a bleaching agent containing surfactant and hydrogen peroxide (manufactured by Kao Corporation, Wide Hiter), and the other side was heat-sealed in the same manner as described above to produce a package.

A 5 kg weight was placed on the center of the package and allowed to stand at 65 ° C. for 12 days. After standing, the package was visually observed and evaluated based on the following evaluation criteria. The evaluation results are summarized in Table 1.
(Evaluation criteria)
A: No leakage of contents from the package was confirmed.
NG: Leakage of contents from the package was confirmed.

10: Laminated body, 11: Base material, 12: Laminate layer, 13: Seal layer, 14: Sealant layer, 20: Packaging body, 21: Nozzle part for pouring, 22: Curved part, 23: Cut part

Claims (10)

A substrate, and a sealant layer including a laminate layer and a seal layer,
The laminate layer includes C-4LLDPE and LDPE,
Content of LDPE in the said laminated layer is 25 mass% or more, The laminated body characterized by the above-mentioned.   The laminate according to claim 1, wherein the sealing layer contains C-4LLDPE.   The laminate according to claim 1 or 2, wherein the sealing layer contains C-6LLDPE.   The content ratio (C-4LLDPE / LDPE) of C-4LLDPE and LDPE in the laminate layer is 25/75 or more and 75/25 or less on a mass basis. The laminated body as described in.   The ratio of the thickness of the seal layer and the laminate layer (the thickness of the seal layer / the thickness of the laminate layer) is 5/100 or more and 40/100 or less. The laminate according to claim 1.   The laminated body as described in any one of Claims 1-5 whose thickness of the said laminate layer is 25 micrometers or more and 190 micrometers or less.   The layered product according to any one of claims 1 to 6 whose thickness of said seal layer is 5 micrometers or more and 55 micrometers or less.   The laminate according to any one of claims 1 to 7, wherein the content of LDPE in the seal layer is 5% by mass or less.   The packaging material which uses the laminated body as described in any one of Claims 1-8 as a constituent material.   The package which uses the laminated body as described in any one of Claims 1-8 as a constituent material, and the content contains at least one of surfactant and hydrogen peroxide.

Images