JP4852899B2 - Laminated body - Google Patents

Description

  The present invention relates to a laminate having excellent adhesion to a substrate. More specifically, the present invention relates to a laminate for a pressure-sensitive adhesive tape that has excellent releasability with respect to a pressure-sensitive adhesive and the like, has no release agent, and has excellent adhesion to a substrate.

An adhesive product such as an adhesive tape and a label is generally composed of an adhesive layer, a base material layer, and a release layer. A rubber or acrylic material is used for the adhesive, a paper, a plastic film, or the like is used for the substrate, and a silicone compound, a long-chain alkyl group-containing compound, or the like is used for the release agent. In such an adhesive product, when the release agent is not sufficiently adhered to the substrate, the release agent is transferred to the adhesive surface of the tape or label when the tape or label is peeled off from the release film. The stickiness of the label may be deteriorated.
Moreover, as a method not using a mold release agent as described above, a method using an ethylene / α-olefin copolymer having a density of 0.90 g / cm ³ or less (for example, see Patent Document 1), a low-density polyethylene is used. A method has been proposed in which a release layer is formed by extrusion molding at a temperature of 250 ° C. to 280 ° C. (see, for example, Patent Document 2).

  By combining these methods, it is possible to form a release layer having excellent release properties, but sufficient adhesion to a substrate such as paper cannot be obtained by extrusion laminate molding.

  Further, there has been proposed a method of extruding an ethylene-based resin at a resin temperature of 200 to 300 ° C. to form a molten thin film, and then laminating the molten thin film on the surface of a paper base material subjected to corona discharge treatment after ozone treatment (eg (See Patent Document 3). According to this method, a laminate excellent in releasability and adhesion to a substrate can be obtained, but an expensive surface treatment apparatus such as an ozone treatment machine is required.

JP-A-55-65281 JP-A-51-20205 JP-A-9-66261

  The present invention has been made in view of the above situation, and aims to improve the adhesion to a substrate and to obtain a laminate excellent in releasability from a pressure-sensitive adhesive. is there.

  As a result of intensive studies to solve the above-mentioned problems, the present inventors have provided a layer made of a specific ethylene copolymer on at least one side of the substrate, and further, polyethylene and / or ethylene / α-olefin on the layer. It has been found that a laminate in which a layer made of a copolymer is formed is excellent in releasability with a pressure-sensitive adhesive and exhibits high adhesive strength with a base material, and the present invention has been completed.

That is, the present invention is a laminate characterized in that (A) layer satisfying the following requirements is laminated on at least one surface of the substrate, and (B) layer satisfying the following requirements is laminated on the (A) layer in this order. It is about the body.
(A) Layer: Ethylene copolymer comprising at least one comonomer selected from ethylene having a ethylene content of 50 to 98% by weight and vinyl ester, acrylic acid, methacrylic acid, acrylic ester, and unsaturated carboxylic acid anhydride A layer of coalescence.
(B) Layer: A layer comprising a high-pressure low-density polyethylene and / or an ethylene / α-olefin copolymer having a density measured according to JIS K6922-1 (1997) of 880 to 930 kg / m ³ .

  Hereinafter, the present invention will be described in detail.

  As for the base material which comprises the laminated body of this invention, a synthetic polymer film or sheet, a woven fabric, a nonwoven fabric, paper, metal foil, etc. are mentioned. As a synthetic polymer film or sheet, for example, a film or sheet made of a synthetic polymer such as polyester such as polyethylene terephthalate, polyamide, polyvinyl alcohol, saponified ethylene / vinyl acetate copolymer, polycarbonate, polyethylene, polypropylene, etc. Is mentioned. Further, these high polymer films or sheets may be further subjected to aluminum vapor deposition or alumina vapor deposition. Further, these polymer films or sheets may be further printed using urethane ink or the like. Examples of the woven fabric and non-woven fabric include those made of synthetic resin such as polyester, polyethylene, and polypropylene, or those made from natural materials such as sufu. Examples of the paper include craft paper, kulpack paper, high-quality paper, glassine paper, and paperboard.

  In particular, one or more selected from paper, fabric, woven fabric or nonwoven fabric made of synthetic resin is preferable because the adhesive tape and label produced using the laminate of the present invention are excellent in adhesiveness and easy tearability.

  The layer (A) of the present invention comprises ethylene having an ethylene content of 50 to 98% by weight and at least one comonomer selected from vinyl ester, acrylic acid, methacrylic acid, acrylic ester, and unsaturated carboxylic anhydride. It is composed of an ethylene copolymer.

  Examples of the vinyl ester include vinyl acetate and vinyl propionate. Examples of the acrylate ester include methyl acrylate, ethyl acrylate, propyl acrylate, butyl acrylate, methyl methacrylate, ethyl methacrylate, propyl methacrylate, butyl methacrylate, glycidyl acrylate, glycidyl methacrylate, and the like. Examples of the unsaturated carboxylic acid anhydride include maleic anhydride, itaconic anhydride, endic anhydride, citraconic anhydride, and the like. These ethylene copolymers can also be used as a mixture of two or more.

  Since the ethylene-based copolymer used for the layer (A) of the present invention is excellent in the moldability of the laminate and the adhesion to the substrate, the melt mass flow rate (hereinafter referred to as MFR) according to JIS K6922-1 (1997). Is preferably in the range of 0.1 to 100 g / 10 min.

  The ethylene content of the ethylene copolymer constituting the layer (A) of the present invention is 50 to 98% by weight, preferably 60 to 90% by weight. When the ethylene content is less than 50% by weight, the moldability of the laminate is deteriorated, which is not preferable, and when it exceeds 98% by weight, the adhesiveness with the base material is inferior.

  Such an ethylene copolymer can be conveniently selected from commercially available products. For example, Ultrasen (made by Tosoh Corporation) as an ethylene / vinyl acetate copolymer, Nuclel (made by Mitsui DuPont Polychemical Co., Ltd.) as an ethylene / methacrylic acid copolymer, and EVAFLEX- as an ethylene / ethyl acrylate copolymer EEA (Mitsui DuPont Polychemical Co., Ltd.) can be mentioned.

When the ethylene-based copolymer constituting the layer (A) of the present invention contains 2 to 40% by weight of a tackifier, the adhesiveness with the base material is improved, and the pressure-sensitive adhesive tape produced using the laminate of the present invention And is more preferable because it is excellent in easy tearing of labels.
Examples of the tackifier include aliphatic hydrocarbon resins (including alicyclic hydrocarbon resins), aromatic hydrocarbon resins, rosins, and polyterpene resins.

  Examples of the aliphatic hydrocarbon resin include polymers having a main component of a monoolefin or diolefin having 4 to 5 carbon atoms such as 1-butene, butadiene, isobutylene, and 1,3-pentadiene, cyclopentadiene, and spent. Examples thereof include a resin obtained by polymerizing a cyclic monomer such as a resin obtained by polymerizing a diene component in a C4 to C5 fraction after cyclization and dimerization, and a resin obtained by endocyclic hydrogenation of an aromatic hydrocarbon resin. Examples of the aromatic hydrocarbon resin include resins mainly composed of vinyl aromatic hydrocarbons such as α-methylstyrene, vinyl toluene, and indene. Examples of rosins include rosin, polymerized rosin, rosin glycerol ester, hydrogenated rosin glycerol ester, polymerized rosin glycerol ester, and the like. Examples of the polyterpene resin include hydrogenated terpene resin, terpene-phenol copolymer resin, dipentene polymer, α-pinene polymer, β-pinene polymer, α-pinene-phenol copolymer resin, and the like.

  Moreover, the ethylene-type copolymer used for the (A) layer of this invention may contain the other olefin type polymer.

  Such an olefin polymer may be generally called a polyolefin resin, and such a polyolefin resin is an α-olefin having 2 to 12 carbon atoms such as ethylene, propylene, 1-butene. Homopolymer or copolymer is shown. For example, high pressure method low density polyethylene, high density polyethylene, medium density polyethylene, ethylene / 1-butene copolymer, ethylene / 1-hexene copolymer, ethylene / 1-octene copolymer, ethylene / 4-methyl- 1-pentene copolymer, polypropylene, propylene / ethylene copolymer, propylene / 1-butene copolymer, poly-1-butene, poly-1-hexene, poly-4-methyl-1-pentene, and the like. You may use a type | system | group polymer individually by 1 type or in combination of 2 or more types.

Moreover, the ethylene-based copolymer used for the layer (A) of the present invention is usually used for polyolefins such as antioxidants, lubricants, neutralizers, anti-blocking agents, surfactants, slip agents, etc. as necessary. An additive may be added.
When mixing a tackifier and / or another olefin polymer, it can be manufactured by a resin mixing apparatus that is usually used. For example, a single-screw extruder, a twin-screw extruder, a Banbury mixer, a pressure kneader, a melt kneader such as a rotating roll, a Henschel mixer, a V blender, a ribbon blender, a tumbler, and the like can be given. When using a melt-kneading apparatus, the melting temperature is preferably about the melting point of the olefin polymer to about 300 ° C.

  The thickness of the layer (A) constituting the present invention is not particularly limited as long as the object of the present invention is achieved, and is excellent in flexibility and has few problems such as breakage, so that the thickness is 1 μm to 5 mm. Is preferable, and the range of 1 μm to 100 μm is more preferable from the viewpoint of economy.

The layer (B) of the present invention has a density measured according to JIS K6922-1 (1997) of 880 to 930 kg / m ³ , preferably 885 to 920 kg / m ³ , more preferably 892 to 910 kg / m ³ . It is composed of a certain high-pressure low-density polyethylene and / or ethylene / α-olefin copolymer. If the density is less than 880 kg / m ^3, is not preferred because inferior in roll releasability of the molding machine when molding the laminate, when the density exceeds 930 kg / m ³ in releasability between the laminate adhesive tape Inferior and undesirable. In addition, an ethylene / α-olefin copolymer is preferable from the viewpoint of releasability. Furthermore, from the viewpoint of moldability of the laminate, the neck-in of the resin composition comprising the ethylene / α-olefin copolymer and the high-pressure low-density polyethylene is preferable. In this case, the ratio of the ethylene / α-olefin copolymer is preferably 30% by weight or more.
The ethylene / α-olefin copolymer is produced by a solution polymerization method, a slurry polymerization method, a high pressure ion polymerization method, a gas phase polymerization method, or the like, using a metallocene catalyst or a Ziegler catalyst. Examples of the α-olefin include propylene, 1-butene, 1-pentene, 1-hexene, 1-heptene, 1-octene, 1-nonene, 1-decene, 4-methyl-1-pentene, and the like. -Butene is particularly preferable because it is excellent in the adhesiveness and easy tearability of adhesive tapes and labels produced using the laminate of the present invention.

  Such an ethylene / α-olefin copolymer is a ratio of the weight average molecular weight (Mw) to the number average molecular weight (Mn) obtained by measurement under the following conditions using gel permeation chromatography (Mw / Mn). Is preferably 3 or less, and the laminate obtained thereby exhibits excellent releasability.

Model: Waters 150C ALC / GPC
Solvent: 1,2,4-trichlorobenzene Flow rate: 1 mL / min Temperature: 140 ° C
Measurement concentration: 30 mg / 30 mL
Injection volume: 100 μL
Column: 3 TSKgel GMH HR-H manufactured by Tosoh Moreover, such an ethylene / α-olefin copolymer has a melt mass flow rate of 5 to 100 g / 10 min, preferably JIS K6922-1 (1997), preferably It is excellent in the moldability of a laminated body as it is 7-80 g / 10min, More preferably, it is 25-60 g / 10min.

  The high-pressure low-density polyethylene and / or ethylene / olefin copolymer (95 to 99.99% by weight) used for the layer (B) of the present invention has a functional group equivalent of 500 g / mol or more and 50000 g / mol or less. When polydimethylsiloxane having an epoxy group and / or an amino group is blended in an amount of 0.01 to 5% by weight, the releasability is further improved, which is preferable.

  When the epoxy group and / or amino group equivalent of such polydimethylsiloxane is in the range of 500 to 50,000 g / mol, the mold release property of the release film and the olefinic weight used for the polydimethylsiloxane and the (B) layer. It is excellent in the adhesiveness of the coalescence and is preferable.

  As such polydimethylsiloxane having an epoxy group and / or amino group, those having a viscosity at 25 ° C. of 50 cSt or more are preferable because the weight loss during extrusion molding is small.

  Examples of the polydimethylsiloxane having an epoxy group equivalent of 500 g / mol to 50000 g / mol used in the present invention are commercially available from Shin-Etsu Chemical Co., Ltd. under the trade names Shin-Etsu Silicone KF-1001, KF-102, and the like. .

  In addition, polydimethylsiloxane having an amino group equivalent of 500 g / mol or more and 50000 g / mol or less used in the present invention is commercially available, for example, SF8417 from Toray Dow Corning Silicone Co., Ltd.

In addition, the olefin polymer used in the layer (B) of the present invention is an antioxidant, a lubricant, a neutralizer, an antiblocking agent, a surfactant, a slip agent, etc., which are usually used for polyolefins as necessary. It may be added with an agent.
When mixing polydimethylsiloxane etc., it can manufacture with the mixing apparatus of resin used normally. For example, a single-screw extruder, a twin-screw extruder, a Banbury mixer, a pressure kneader, a melt kneader such as a rotating roll, a Henschel mixer, a V blender, a ribbon blender, a tumbler, and the like can be given. When using a melt-kneading apparatus, the melting temperature is preferably about the melting point of the olefin polymer to about 300 ° C.

  The thickness of the layer (B) constituting the present invention is not particularly limited as long as the object of the present invention is achieved. From the viewpoint of economy, the range of 1 μm to 100 μm is most preferable.

  The laminate of the present invention can be produced using a calendar molding machine, a press molding machine, an extrusion laminating machine or the like. Among these, extrusion laminate molding is particularly preferable because the thickness of the (A) layer and the (B) layer can be reduced.

  When subjected to extrusion lamination molding, after extruding an ethylene copolymer used for layer (A) or a resin composition comprising an ethylene copolymer and a tackifier to form a two-layer laminate (B) A method of obtaining a laminate of the present invention by extruding high-pressure forensic density polyethylene and / or ethylene / α-olefin copolymer used for the layer (tandem extrusion laminating method), (A) ethylene copolymer or ethylene used for the layer After extruding a high-pressure forensic density polyethylene and / or ethylene / α-olefin copolymer to be used for the layer (B), a resin composition comprising a copolymer and a tackifier, and then forming two layers in the die, The method (coextrusion laminating method) is most preferable from the viewpoint of economy.

  When subjected to extrusion laminating, the extrusion resin temperature of (A) the ethylene copolymer constituting the layer and (B) the high-pressure forensic density polyethylene and / or ethylene / α-olefin copolymer constituting the layer is 150 to When it is at 300 ° C., the adhesive strength between the base material / (A) layer and the release property to the adhesive of the laminate are excellent, which is preferable. More preferably, it is 180-280 degreeC, Most preferably, it is 200-250 degreeC.

  When subjected to extrusion laminating, known surface treatments such as ozone treatment, anchor coating agent treatment, corona treatment and the like can be applied to the substrate and the (A) layer surface.

  The laminate of the present invention is extremely useful as a wide range of industrial materials such as labels, sealing release papers and tapes.

  EXAMPLES Hereinafter, although an Example demonstrates this invention further in detail, this invention is not limited to these Examples.

  The measurement methods and evaluation methods for physical properties and workability are shown below.

(1) Melt mass flow rate (MFR)
Measured according to JIS K6922-1 (1997).

(2) Density The density was measured in accordance with JIS K6922-1 (1997).

(3) Releasability A polyester adhesive tape (product name 31B manufactured by Nitto Denko Corporation) was applied to the surface of the layer (B) of the laminate obtained in the example, and the linear pressure was 5 kg / cm and the speed was 5 m / min. After passing between the rubber rolls under conditions, it was left in an atmosphere of 40 ° C. for 7 days. Thereafter, the adhesive strength between the polyester pressure-sensitive adhesive tape and the layer (B) was measured with an autograph DCS-100 tensile tester (manufactured by Shimadzu Corporation). The peeling speed is 300 mm / min, and the width of the test piece is 15 mm.

(4) Adhesive pressure-sensitive adhesive The polyester adhesive tape peeled off by the releasability test was affixed to an aluminum plate (trade name A1N30H-H18, manufactured by Toyo Aluminum Co., Ltd., thickness 0.1 mm) at a linear pressure of 5 kg / cm. After leaving in an atmosphere of 23 ° C. for one day, the adhesive strength between the polyester adhesive tape and the aluminum plate was measured with an autograph DCS-100 tensile tester. The peeling speed is 300 mm / min, and the width of the test piece is 15 mm.

(5) Adhesiveness with base material The adhesive strength between the base material of the laminated body obtained by the Example and (A) interlayer was measured with the autograph DCS-100 tensile tester. The peeling speed is 300 mm / min, and the width of the test piece is 15 mm.

(6) Easy tearability of laminates The laminates obtained in the examples were torn according to JIS K7218 A method, and the appearance was evaluated. In the torn sample, the sample in which the elongation of the (A) layer and the (B) layer is not recognized is good (◯), the sample in which the elongation of the (A) layer and the (B) layer is recognized as defective (×), A sample in which the elongation was slightly recognized as an intermediate was taken as Δ.

(7) Neck-in (B) The high-pressure low-density polyethylene and / or the ethylene / α-olefin copolymer neck-in used for the layer was evaluated using an extrusion laminator (manufactured by Plako Co., Ltd.) having a 25 mmφ screw. . Neck-in was determined by measuring the film width of high-pressure low-density polyethylene and / or ethylene / α-olefin copolymer at a take-up speed of 20 m / min and calculating the difference in die opening width (300 mm). The smaller the value, the better the laminate moldability. In both cases, the resin temperature was 250 ° C.

Example 1
On the corona-treated surface of high-quality paper (trade name Kinmari SW, basis weight 50 g / m ² manufactured by Hokuetsu Paper Co., Ltd.) subjected to corona treatment under the condition of 50 W · min / m ² as a base material, ethylene is contained as the (A) layer. An ethylene / vinyl acetate copolymer having a weight of 80% by weight and a vinyl acetate content of 20% by weight (trade name Ultrasen 633 manufactured by Tosoh Corp., hereinafter may be referred to as A-1). In an extruder having a screw, an ethylene / 1-butene copolymer having a density of 893 kg / m ³ as a layer (B) (trade name Nipolon-Z 04L54A manufactured by Tosoh Corporation, Mw / Mn = 2.4, below) B-1 may be referred to.) The pellets are fed to an extruder having a 25 mmφ screw and extruded from a multi-manifold T-die (manufactured by Plastic Engineering Laboratory) at a temperature of 250 ° C. ( A laminate was obtained by coextrusion lamination so that the A) layer was 8 μm and the (B) layer was 7 μm thick.

  After the obtained laminate was stored in an oven kept at 40 ° C. for 20 hours, the releasability, re-tackiness, and adhesion to the substrate were measured, and the measurement results are shown in Table 1.

実施例２
（Ａ）層として（Ａ−１）の代わりに、（Ａ−１）８０重量％と粘着付与剤（荒川化学工業（株）製 商品名アルコンＰ−１００、以下Ｔ−１と記す場合がある。）を２０重量％とした以外は、実施例１と同様にして積層体を得た。評価結果を表１に示した。

Example 2
(A) Instead of (A-1) as a layer, (A-1) 80% by weight and a tackifier (trade name Alcon P-100, manufactured by Arakawa Chemical Industries, Ltd., hereinafter sometimes referred to as T-1) .) Was changed to 20% by weight, and a laminate was obtained in the same manner as in Example 1. The evaluation results are shown in Table 1.

Example 3
(A) Instead of (A-1) as a layer, an ethylene / vinyl acetate copolymer having an ethylene content of 85% by weight and a vinyl acetate content of 15% by weight (trade name Ultrasen 625 manufactured by Tosoh Corporation) The laminate was obtained in the same manner as in Example 1 except that A-2) was sometimes used. The evaluation results are shown in Table 1.

Example 4
(A) An ethylene / vinyl acetate copolymer (trade name Ultrasen 541 manufactured by Tosoh Corporation) having an ethylene content of 90% by weight and a vinyl acetate content of 10% by weight instead of (A-1) as the layer (A) The laminate was obtained in the same manner as in Example 1 except that A-3) was sometimes used. The evaluation results are shown in Table 1.

Example 5
(B) As a layer, instead of (B-1), a high-pressure method low-density polyethylene having a density of 919 kg / m ³ (trade name Petrocene 212 manufactured by Tosoh Corporation, hereinafter may be referred to as B-2). A laminate was obtained in the same manner as in Example 2 except that it was used. The evaluation results are shown in Table 1.

Example 6
(B) As a layer, instead of (B-1), high-pressure low-density polyethylene (trade name Petrocene 213, manufactured by Tosoh Corporation) having 60% by weight of (B-1) and a density of 918 kg / m ³ , hereinafter referred to as B -3) was obtained in the same manner as in Example 2 except that a resin composition comprising 40% by weight was used. The evaluation results are shown in Table 1.

Example 7
(B) An epoxy-modified polydimethylsiloxane (trade name KF, manufactured by Shin-Etsu Chemical Co., Ltd.) having 99.8% by weight of (B-2) and an epoxy equivalent of 3500 g / mol instead of (B-1) as a layer. A laminate was obtained in the same manner as in Example 2 except that a resin composition consisting of -1001, hereinafter referred to as S-1) was 0.2% by weight was used. The evaluation results are shown in Table 1.

Example 8
(B) An amino-modified polydimethylsiloxane (Toray Dow Corning Silicone Co., Ltd.) having 99.8% by weight of (B-2) and an amino group equivalent of 1800 g / mol instead of (B-1) as the layer (B) ) Product name SF8417 (hereinafter, sometimes referred to as S-2) was used in the same manner as in Example 2 except that a resin composition comprising 0.2% by weight was used. The evaluation results are shown in Table 2.

Example 9
As a layer (B), instead of (B-1), 99.8% of the resin composition comprising 60% by weight of (B-1) and 40% by weight of (B-3) and (S-1) A laminate was obtained in the same manner as in Example 2 except that the resin composition comprising 0.2% by weight was used. The evaluation results are shown in Table 2.

実施例１０
（Ａ）層として（Ａ−１）の代わりに、エチレン含有量が８９重量％であるエチレン・メタクリル酸共重合体（三井デュポンポリケミカル製 商品名ニュクレルＮ１１０８Ｃ、以下Ａ−４と記す場合がある。）を用いたこと以外は、実施例１と同様にして積層体を得た。評価結果を表２に示した。

Example 10
(A) As a layer, instead of (A-1), an ethylene / methacrylic acid copolymer having an ethylene content of 89% by weight (trade name Nucrel N1108C, manufactured by Mitsui DuPont Polychemical Co., Ltd. may be referred to as A-4 hereinafter) .) Was used in the same manner as in Example 1 except that a laminate was obtained. The evaluation results are shown in Table 2.

Comparative Example 1
(A) The laminate was prepared in the same manner as in Example 1 except that instead of (A-1), high-pressure low-density polyethylene (B-2) having an ethylene content of 100% by weight was used as the layer. Obtained. Although the evaluation result was shown in Table 3, the adhesive strength of a base material and (A) layer was low, and it was not able to evaluate the mold release property with an adhesive tape.

比較例２
（Ｂ）層として（Ｂ−１）の代わりに、密度が９４０ｋｇ／ｍ^３である中密度ポリエチレン（東ソー（株）製 商品名ペトロセンＬＷ０４−１、以下Ｂ−４と記す場合がある。）を用いたこと以外は、実施例２と同様にして積層体を得た。評価結果を表３に示したが、粘着テープとの離型性に劣っていた。

Comparative Example 2
(B) As a layer, instead of (B-1), medium density polyethylene having a density of 940 kg / m ³ (trade name Petrocene LW04-1, manufactured by Tosoh Corp., hereinafter sometimes referred to as B-4) may be used. A laminate was obtained in the same manner as in Example 2 except that it was used. Although the evaluation result was shown in Table 3, it was inferior to the release property with an adhesive tape.

Comparative Example 3
(B) Instead of (B-1) as a layer, an ethylene / propylene copolymer having a density of 870 kg / m ³ (trade name TAFMER P-0180 manufactured by Mitsui Chemicals, Inc., hereinafter referred to as B-5) Except for the use of a.), A laminate was produced in the same manner as in Example 2, but the peelability of the cooling roll during extrusion laminate molding was poor, and a laminate could not be obtained.

Claims (7)

A laminate comprising: (A) a layer satisfying the following requirements on at least one surface of a substrate; and (B) a layer satisfying the following requirements on the (A) layer.
(A) Layer: Ethylene copolymer comprising at least one comonomer selected from ethylene having a ethylene content of 50 to 98% by weight and vinyl ester, acrylic acid, methacrylic acid, acrylic ester, and unsaturated carboxylic acid anhydride A layer of coalescence.
(B) Layer: A layer comprising a high-pressure low-density polyethylene and / or an ethylene / α-olefin copolymer having a density measured according to JIS K6922-1 (1997) of 880 to 930 kg / m ³ . The (A) layer according to claim 1 is at least one selected from ethylene and vinyl ester, acrylic acid, methacrylic acid, acrylic acid ester, and unsaturated carboxylic acid anhydride having an ethylene content of 50 to 98% by weight. A laminate comprising a resin composition comprising 60 to 98% by weight of an ethylene copolymer comprising a comonomer and 2 to 40% by weight of a tackifier. Tackifiers are aliphatic hydrocarbon resins (including alicyclic hydrocarbon resins), aromatic
The laminate according to claim 2, which is a hydrocarbon resin, rosin, or polyterpene resin. The (B) layer has a density of 880 to 930 kg / m ³ measured by JIS K6922-1 (1997) and / or an ethylene / α-olefin copolymer of 95 to 99.99% by weight, and a functional group. claims equivalent is characterized in that a layer formed using a resin composition comprising a polydimethylsiloxane 0.01 to 5 having an epoxy group and / or amino groups or less 500 g / mol or more 50000 g / mol The laminated body in any one of Claims 1-3 . The laminate according to any one of claims 1 to 4 , wherein the substrate is at least one selected from paper, a woven fabric made of cloth, or a nonwoven fabric. The method for producing a laminate according to any one of claims 1 to 5 , wherein the laminate is produced by a coextrusion laminating method. (B) Extrusion temperature at the time of shape | molding a layer is the range of 150-300 degreeC, The manufacturing method of the laminated body of Claim 6 characterized by the above-mentioned.