JP6583658B2 - Laminated film for easy-open packaging body and easy-open packaging body - Google Patents

Description

 The present invention relates to a laminated film for an easy-open packaging body and an easy-open packaging body.

Various articles such as foods, pharmaceuticals, and cosmetics are accommodated and distributed in packaging bodies such as containers and bags whose opening portions of molded containers are sealed with a lid. The user of the article opens the package and takes out the article for use. As the package, a package that can be easily opened manually without using a tool such as scissors or can opener is used.
As a package that can be easily opened, for example, there is an easily openable package that can be easily peeled off by hand. The easy-open packaging body is required to satisfy both ease of opening (openability) and sealing performance.
If the seal part is easily peeled off in order to improve the openability of the easy-open packaging body, the sealing part, which is a basic function of the packaging body, may be impaired due to peeling of the seal part in a distribution stage or the like.
If the sealing strength of the seal portion is increased too much in order to pursue the sealing performance of the easy-open packaging body, it may be difficult to open the package, or the packaging body may be damaged when opened.

 For such problems, for example, a base material layer made of a resin composition containing polybutylene succinate as a main component, an adhesive layer made of a resin composition containing polyethylene resin as a main component, and a polylactic acid resin as a main component There has been proposed an easy peel sealant composed of a three-layer coextruded laminated film obtained by coextruding a seal layer made of a resin composition in that order (for example, Patent Document 1).

JP 2007-320060 A

However, the easy-open packaging body is required to have an excellent opening property and an excellent sealing property.
Then, this invention aims at the laminated | multilayer film for easy-open packaging bodies with which the openability and the sealing performance were improved more.

As a result of intensive studies, the present inventors have obtained the following knowledge.
When the laminated film for easy-open packaging is heat-sealed to the adherend, if the moisture in the air or the moisture generated from the contents adheres to the sealant layer, the sealing strength is partially reduced. To do. And the knowledge that the sealing performance of a sealing part is impaired, or a part with high sealing strength and a part with low sealing strength arises in a sealing part, and opening property is impaired was acquired.
By providing a moisture absorbing layer on one side of the sealant layer, the present inventors can suppress a decrease in seal strength due to moisture adhering to the sealant layer, and have better openability and better sealability. As a result, the present invention was completed.

That is, the laminated film for an easy-open packaging body of the present invention is characterized by comprising a sealant layer having easy peel properties and a moisture absorbing layer provided on one surface of the sealant layer.
The moisture absorption layer is preferably obtained in accordance with JIS K7209 D method, and the moisture absorption at 40 ° C. and 90% RH is 0.5 g / m ² or more, and the moisture absorption layer contains zeolite. It is preferable.

The easy-open packaging body of the present invention is characterized in that the laminated film for the easy-open packaging body of the present invention is formed into a bag.
The easy-open packaging body of the present invention includes a container main body and a lid body that seals the opening of the container main body, and the lid body is composed of the laminated film for the easy-open packaging body of the present invention. It is characterized by that.

 According to the laminated film for an easy-open packaging body of the present invention, the openability can be further improved while maintaining high sealing performance.

It is sectional drawing of the laminated | multilayer film for easy-open packaging bodies concerning one Embodiment of this invention.

(Laminated film for easy-open packaging)
A laminated film for an easy-open packaging body according to the present invention (hereinafter sometimes simply referred to as a laminated film) includes a sealant layer having an easy peel property and a moisture absorbing layer provided on one surface of the sealant layer. .

An example of the laminated film of the present invention will be described below with reference to the drawings.
The laminated film 1 in FIG. 1 includes a base material 10 and a sealant material 20 provided on one surface of the base material 10.

Examples of the substrate 10 include resin films, metal foils, paper, and laminates thereof.
Examples of the resin film include polyolefins such as polyethylene terephthalate (PET) such as biaxially stretched polyethylene terephthalate, biaxially stretched polypropylene (OPP), unstretched polypropylene (CPP), high density polyethylene (HDPE), and medium density polyethylene (MDPE). And polyamide (PA) such as biaxially stretched polyamide. Among these, PET, polypropylene, and PA are preferable, and biaxially stretched PET, OPP, and biaxially stretched PA are more preferable. A vapor deposition layer such as aluminum or aluminum oxide may be formed on the resin film.
Examples of the metal foil include aluminum foil.
As a laminated body, the laminated body of the said resin films, and the laminated body of resin films, such as PET and OPP, and metal foil are mentioned.

The thickness of the base material 10 is determined in consideration of a material, a structure, etc., for example, 5-100 micrometers is preferable and 10-50 micrometers is more preferable. If it is less than the said lower limit, there exists a possibility that the intensity | strength of the laminated | multilayer film 1 may fall, and when it exceeds the said upper limit, the softness | flexibility of the laminated | multilayer film 1 may be impaired and handling may become complicated.
When the base material 10 is a laminate of a resin film and a metal foil, the thickness of the resin film is preferably 5 to 50 μm.
When the base material 10 is a laminate of a resin film and a metal foil, the thickness of the metal foil is preferably 6 to 40 μm, and more preferably 6 to 30 μm.

  The sealant material 20 is obtained by laminating an adhesive layer 22, a moisture absorption layer 24, and a sealant layer 26 on the base material 10 in this order. That is, the sealant material 20 is provided between the adhesive layer 22 provided on one surface of the substrate 10, the sealant layer 26 that is heat sealed to the adherend, and the adhesive layer 22 and the sealant layer 26. A moisture absorption layer 24.

 The adhesive layer 22 is not particularly limited as long as it can adhere the sealant material 20 to the base material 10, for example, low density polyethylene (LDPE), linear LDPE (LLDPE), MDPE, HDPE, ethylene-vinyl alcohol polymer (EVOH). Etc.

 The thickness of the adhesive layer 22 can be determined in consideration of the material and the like, and is preferably 5 to 50 μm, and more preferably 10 to 20 μm, for example. If it is less than the said lower limit, there exists a possibility that the adhesive strength of the sealant material 20 with respect to the base material 10 may fall, and when it exceeds the said upper limit, the laminated | multilayer film 1 may become too thick and a softness | flexibility may be impaired.

 The hygroscopic layer 24 may be any layer as long as it has hygroscopicity, and examples thereof include a resin film containing a hygroscopic agent, paper, a cellulose film, an EVOH film, and the like. Among these, a resin film containing a hygroscopic agent is used. preferable. If it is a resin-made film containing a hygroscopic agent, it will absorb water easily and it will be difficult to dissipate the absorbed water. In addition, if it is a resin film containing a hygroscopic agent, the adhesive strength between the adhesive layer 22 and the sealant layer 26 can be easily increased.

 As resin which comprises the resin film containing a hygroscopic agent, LDPE, LLDPE, MDPE, HDPE, EVOH etc. are mentioned, for example.

 Examples of the hygroscopic agent include zeolite, silica gel, quicklime, magnesium sulfate, etc. Among them, zeolite and silica gel are preferable, and zeolite is more preferable. Generally, the temperature condition when heat-sealing the laminated film 1 to the adherend is 100 to 200 ° C. Zeolite does not dissipate absorbed moisture under the above temperature conditions. For this reason, by using zeolite as a hygroscopic agent, when the laminated film 1 is heat-sealed to the adherend, moisture is not diffused from the moisture-absorbing layer 24, and the diffused moisture is prevented from adhering to the sealant layer 26. It is possible to improve the sealing performance. In addition, since zeolite has a strong water absorption capability compared to other hygroscopic agents, a small amount of water adhering to the sealant layer 26 can be absorbed well.

 Although the average particle diameter of a hygroscopic agent is not specifically limited, For example, 5-50 micrometers is preferable, 5-30 micrometers is more preferable, 5-20 micrometers is more preferable, 10-20 micrometers is especially preferable. If it is less than the lower limit, when the moisture absorbing layer 24 is provided, the hygroscopic agent tends to agglomerate and the particle diameter tends to increase, and the agglomerated particles may damage the sealant layer 26 and impair the sealing performance. is there. If the above upper limit is exceeded, the particle size of the hygroscopic agent may be too large, and the hygroscopic agent may damage the sealant layer 26 and impair the sealing performance.

 The content of the hygroscopic agent in the hygroscopic layer 24 is appropriately determined in consideration of the type of the hygroscopic agent, and is preferably 1 to 60% by mass, and more preferably 5 to 50% by mass. If it is less than the said lower limit, the moisture absorption amount of the moisture absorption layer 24 will decrease too much, and there exists a possibility that sealing performance may fall. If the upper limit value is exceeded, the adhesive strength between the hygroscopic layer 24 and the adhesive layer 22 and the adhesive strength between the hygroscopic layer 24 and the sealant layer 26 become too low, and when the laminated film 1 is peeled off from the adherend, The layer 24 may be peeled off from other adjacent layers, and handling may be complicated.

 The thickness of the moisture absorption layer 24 is determined in consideration of the material and the like, and is preferably 10 to 100 μm, and more preferably 20 to 60 μm, for example. If it is less than the above lower limit value, the hygroscopicity may be lowered, and if it exceeds the above upper limit value, the laminated film 1 becomes too thick and the flexibility may be impaired.

The moisture absorption amount of the moisture absorption layer 24 is determined in consideration of the use of the laminated film 1 and the like, for example, preferably 0.5 g / m ² or more, and more preferably 2 g / m ² or more. If the amount is less than the above lower limit, the amount of moisture absorption becomes too small, and when the laminated film 1 is heat-sealed to the adherend, moisture may remain on the surface of the sealant layer 26 and the sealing performance may be reduced. Although an upper limit is not specifically limited, For example, 10 g / m < ² > or less is preferable and 5 g / m < ² > or less is more preferable. If the upper limit is exceeded, the laminated film 1 may be too thick and the flexibility may be impaired.
The moisture absorption amount of the moisture absorption layer 24 is adjusted by a combination of the material and thickness of the moisture absorption layer 24, the type and amount of the moisture absorbent, and the like.
The moisture absorption amount of the moisture absorption layer 24 is a moisture absorption amount at 40 ° C. and 90% RH, which is obtained in accordance with the D method of JIS K7209.

The sealant layer 26 has a function (easy peel property) that can be easily peeled manually after being heat sealed to the adherend and heat sealed to the adherend.
The sealant layer 26 may be any peel type such as a cohesive peel type in which the sealant layer 26 performs phase separation and an interface peel type in which the sealant layer 26 peels at the interface with the adherend.
As a material of the sealant layer 26, a material that easily allows moisture to pass therethrough is preferable. Since moisture easily permeates, the moisture absorbing layer 24 can quickly absorb moisture adhering to the sealant layer 26.
The material of the sealant layer 26 is determined in consideration of the peeling type, the material of the adherend, etc., and polyolefins such as LDPE, LLDPE, MDPE, HDPE, polypropylene (PP), ethylene-vinyl acetate polymer (EVA), ethylene -An acrylic acid polymer (EAA), an ethylene-methacrylic acid polymer (EMAA), an ethylene-ethyl acrylate polymer (EEA), an ionomer and a mixture thereof (hereinafter, these may be collectively referred to as a sealant base resin), and And a mixture of a sealant base resin and an α-olefin copolymer such as an ethylene-butene-1 copolymer and an ethylene-propylene copolymer.
The sealant layer 26 preferably uses a mixture of a sealant base resin and an α-olefin copolymer.
As the sealant base resin, polyolefin is preferable, and PE and PP are more preferable.
5-40 mass% is preferable and, as for content of the ethylene-1 butene polymer in the sealant layer 26, 10-30 mass% is more preferable.

 The thickness of the sealant layer 26 is determined in consideration of the material and the like, and is preferably 5 to 60 μm, and more preferably 7 to 40 μm, for example. If it is less than the said upper limit, the sealing strength with respect to a to-be-adhered body may fall, and there exists a possibility that sealing performance may fall. If it exceeds the above upper limit value, the moisture adhering to the sealant layer 26 is difficult to permeate the sealant layer 26, and the moisture adhering to the sealant layer 26 is difficult to be absorbed by the moisture absorption layer 24.

 The thickness of the sealant material 20 is not specifically limited, For example, 10-100 micrometers is preferable and 20-60 micrometers is more preferable.

The sealing strength with respect to the adherend of the laminated film 1 is determined according to the use of the laminated film 1 and the like, and is preferably 3 to 20 N / 15 mm, and more preferably 5 to 15 N / 15 mm, for example. If it is less than the above lower limit, the sealing property may be lowered, and if it exceeds the upper limit, the opening property may be lowered.
The sealing strength of the laminated film 1 is adjusted by a combination of the material of the adherend, the material of the sealant layer 26, and the like.
The seal strength is the maximum stress when the laminated film 1 and the adherend are peeled by a so-called T peel peel test in accordance with JIS Z1707.

The adhesive strength between the base material 10 and the sealant material 20 is preferably 2N / 15 mm or more, for example, and more preferably 4N / 15 mm or more. If it is less than the said lower limit, when peeling the laminated | multilayer film 1 from a to-be-adhered body, the base material 10 and the sealant material 20 will peel, and there exists a possibility that handling may become complicated. The upper limit is not particularly limited, but is set as appropriate in consideration of productivity and the like.
The adhesive strength is the maximum stress when the base material 10 and the sealant material 20 are peeled off by a so-called T peel peel test in accordance with JIS Z0238.

(Method for producing laminated film for easy-open packaging)
The laminated film 1 is manufactured according to a conventionally known manufacturing method.
An example of the manufacturing method of the laminated film 1 is demonstrated below.
The manufacturing method of the laminated film 1 of the present embodiment includes a step of obtaining the base material 10 (base material manufacturing step), a step of obtaining the sealant material 20 (sealant material manufacturing step), and bonding the base material 10 and the sealant material 20 together. A process (bonding process).

The method of obtaining the base material 10 in the base material manufacturing process is selected from conventionally known methods according to the material and configuration of the base material 10.
For example, when obtaining the base material 10 which consists of a laminated body of resin film and metal foil, the method of manufacturing a resin film and metal foil, respectively, and adhere | attaching these with an adhesive agent is mentioned.

The method of obtaining the sealant material 20 in the sealant material manufacturing process is selected from conventionally known methods according to the material and configuration of the sealant material 20.
As a method for obtaining the sealant material 20, for example, a sealant material 20 that is a laminate of the adhesive layer 22, the moisture absorption layer 24, and the sealant layer 26 by a coextrusion method using a T-die coextrusion machine, an inflation coextrusion machine, or the like. The method of obtaining is mentioned.

 As a method of bonding the base material 10 and the sealant material 20 in the bonding process, for example, the base material 10 and the sealant material 20 are stacked so that the adhesive layer 22 contacts the base material 10 and heated while pressing this. A method is mentioned.

(Easy-open packaging)
The easy-open packaging body uses the laminated film of the present invention. Examples of the easily openable package include a bag (easy openable bag) formed by heat sealing the sealant layers 26 of the laminated film 1. Examples of the form of the easy-open bag include a palm-attached bag, a three-side seal bag, and a four-side seal bag.
Further, for example, the easy-open packaging body includes a container body having an opening and a lid made of the laminated film 1, a sealant layer is brought into contact with the periphery of the opening of the container body, and the laminated film 1 is attached to the container body. An easy-open container that is heat-sealed. Examples of the easily openable container include a container for strip packaging.
The material of the container body is not particularly limited, and examples thereof include resins such as polyolefin and polystyrene, paper, and metals.

As described above, according to the laminated film of the present embodiment, since the sealant layer and the moisture absorbing layer provided on one surface of the sealant layer are provided, the unsealing property and the sealing property can be further improved.
For example, when manufacturing a package containing the contents in an easy-open bag, moisture in the manufacturing environment adheres to the sealant layer. In particular, when the contents include foods, medicines, cosmetics, or articles containing moisture (for example, contact lenses) containing moisture, the moisture that evaporates from the contents tends to adhere to the sealant layer. When heat sealing is performed in a state where moisture adheres to the sealant layer, the seal strength of the portion where moisture adheres is reduced, or a portion that is not heat sealed is generated (that is, a seal failure occurs). For this reason, the easy-open packaging body manufactured by heat-sealing in the state which the water | moisture content adhered to the sealant layer is inferior in sealing performance, such as opening during distribution | circulation and impaired airtightness.
In addition, when the seal part where the seal strength is partially raised is opened, it is difficult to smoothly open the seal part. For example, if a force is applied to peel off a portion with high sealing strength, the opening force will be excessive for the portion with low sealing strength, and the easy-open packaging will be opened vigorously, causing the contents to scatter. There is a risk of doing so.
In the laminated film of the present embodiment, the moisture absorption layer quickly absorbs moisture adhering to the sealant layer and can be heat-sealed without causing a sealing failure. Therefore, it is possible to achieve both better openability and better sealing performance.

(Other embodiments)
The present invention is not limited to the above-described embodiment.
In the above-described embodiment, the sealant material includes the adhesive layer. However, the present invention is not limited to this. For example, the base material is made of a polyolefin resin film alone, and the base material and the hygroscopic layer are bonded. When the property is secured, it is not always necessary to provide an adhesive layer.

 In the above-mentioned embodiment, although the base material is provided, this invention is not limited to this, The base material does not need to be provided. However, it is preferable to provide a base material from the viewpoint of imparting gas barrier properties or improving operability when peeling the laminated film.

 EXAMPLES Hereinafter, although an Example is shown and this invention is demonstrated, this invention is not limited to a following example.

(Preparation example 1) Preparation of sealant I 85 parts by mass of LLDPE (UF421, manufactured by Nippon Polyethylene Co., Ltd.) and 15 parts by mass of ethylene-butene-1 copolymer (PB8640M, manufactured by Sun Allomer Co., Ltd.) were mixed to obtain sealant I. . The sealant layer composed of this sealant I is a cohesive peeling type.

Preparation Example 2 Preparation of Sealant II 75 parts by mass of PP (PF380A, manufactured by Sun Allomer Co., Ltd.) and 25 parts by mass of ethylene-butene-1 copolymer (PB8640M, manufactured by Sun Allomer Co., Ltd.) were mixed to obtain Sealant II. The sealant layer composed of this sealant II is a cohesive peeling type.

(Preparation Example 3) Preparation of Sealant III 75 parts by mass of EVOH (ET3803, manufactured by Nippon Synthetic Chemical Co., Ltd.) and 25 parts by mass of ethylene-butene-1 copolymer (PB8640M, manufactured by Sun Allomer Co., Ltd.) did. The sealant layer composed of this sealant III is an interface peeling type.

(Preparation example 4) Preparation of constituent material of hygroscopic layer 82.5 parts by mass of LLDPE (SP2020, manufactured by Plum Rimmer Co., Ltd.) and 17.5 parts by mass of the hygroscopic agent shown in Table 1 were mixed to form the constituent material of the hygroscopic layer. It was.

(Examples 1-14 )
According to the structure of Table 1, a base material and a sealant material were manufactured. The sealant material is obtained by molding the constituent materials of each layer by a co-extruder. The base material and the sealant material were stacked so that the adhesive layer was in contact with the base material, and heated (55 ° C.) while pressing (0.4 MPa) to obtain a laminated film of each example. In each example, the base PET was placed in the outermost layer. About the obtained laminated | multilayer film, adhesive strength, sealing strength, openability, and sealing performance are evaluated, and the result is shown in a table | surface. However, Examples 5, 8-11, and 13-15 are reference examples.

(Comparative Example 1)
A laminated film was obtained in the same manner as in Example 1 except that LLDPE containing no hygroscopic agent (moisture absorption amount 0 g / m ² ) was used for the hygroscopic layer. About the obtained laminated | multilayer film, adhesive strength, sealing strength, openability, and sealing performance are evaluated, and the result is shown in a table | surface.

(Evaluation methods)
<Measurement of moisture absorption>
Based on JIS K7209 D method, the moisture absorption amount of the moisture absorption layer was measured in the following procedures.
Only the moisture absorption layer in Table 1 was produced, and this was cut out to 0.1 m × 0.1 m to obtain a sample piece. This sample piece was dried at 50 ° C., and the mass of the dried sample piece was weighed in units of 0.1 mg (mass α). Next, the dried sample piece was left in a container at 40 ° C. and 90% RH for 24 hours. After leaving the test piece in the container for 24 hours, the sample piece was immediately taken out from the container, and the mass of the test piece was weighed in units of 0.1 mg within 1 minute (mass β). Mass α and mass β were applied to the following equation (1) to determine the amount of moisture absorption.

Moisture absorption (g / m ² ) = (mass β (g) −mass α (g)) ÷ (0.1 m × 0.1 m) (1)

<Measurement method of adhesive strength>
In accordance with JIS Z0238 “Bag heat seal strength test”, the adhesive strength between the base material and the sealant material was regarded as a seal, and the adhesive strength was measured under the following conditions. The adhesive strength in the table is an average value of the measurement results of five test pieces.

≪Measurement method≫
Test piece: 15 mm wide.
Measurement environment: 23 ° C., 50% RH.
Measuring instrument: Strograph EL (manufactured by Toyo Seiki Seisakusho Co., Ltd.).
Grasp interval: 50 mm.
Tensile speed: 300 mm / min.

<Measurement method of seal strength>
Using the laminated film of each example, a seal part (bottom end seal part) was formed at the lower end, a seal part attached to the back was formed on the back surface, and a joint-attached bag (130 mm × 170 mm) having an open upper end was produced. Put the 90 ° C content liquid (salad oil / water = 20mL / 160mL) into this jointed bag and heat seal the top opening (seal temperature: 180 ° C, seal time: 1 second, seal pressure) after 1 minute. : 3.5 kg / cm ² , seal width: 10 mm) to obtain a package. With respect to a seal part (upper end seal part) formed by heat-sealing the open upper end, the seal strength was measured under the following conditions in accordance with JIS Z1707 “heat seal strength test”. The seal strength in the table is an average value of the measurement results of five test pieces.

≪Measurement method≫
Test piece: 15 mm wide.
Measurement environment: 23 ° C., 50% RH.
Measuring instrument: Strograph EL (manufactured by Toyo Seiki Seisakusho Co., Ltd.).
Grasp interval: 50 mm.
Tensile speed: 300 mm / min.

<Openability>
The upper end seal portion formed in “<Measurement method of seal strength>” was evaluated by classifying the feel when manually opened according to the following evaluation criteria. “△” and “◯” were judged to have good openability.

≪Evaluation criteria≫
○: Can be easily opened manually, and the entire seal portion has a uniform seal strength.
Δ: Can be easily opened manually, but feels slightly high or low seal strength in part of the seal portion.
X: The whole seal portion has non-uniform seal strength, and there are portions that are difficult to open manually.

<Sealability>
The bottom seal part of the package produced in “<Measurement method of seal strength>” was opened, and the content liquid was discharged. Thereafter, a check solution (red) of AGELESS seal check spray (manufactured by Mitsubishi Gas Chemical Co., Ltd.) was sprayed from the inside of the palm-attached bag to the upper seal portion. The upper end seal portion was vertically lowered and the palm-attached bag was suspended, and the upper end seal portion was observed after 24 hours. The observed results were classified into the following evaluation criteria to evaluate the sealing performance. “△” and “◯” were judged to have good sealing properties.

≪Evaluation criteria≫
○: No penetration of the check solution into the top seal part.
Δ: Although permeation of the check solution into the upper end seal portion is observed, the check solution does not penetrate in the width direction of the seal portion (seal retraction is observed but there is no liquid leakage).
X: The check liquid penetrates the width direction of the upper end seal part (liquid leakage is observed).

As shown in Table 1, in each of Examples 1 to 14 to which the present invention was applied, the unsealing property was “Δ” or “◯”, and the sealing property was “Δ” or “◯”.
The sealing performance of Example 4 using zeolite as the hygroscopic agent was improved as compared with Example 15 using silica gel as the hygroscopic agent.
In Examples 1, 4, and 7 in which the average particle size of the hygroscopic agent was 5 to 20 μm, the sealing performance was improved as compared with Example 9 in which the average particle size of the hygroscopic agent was 50 μm.
In Examples 1, 4, and 7 in which the average particle diameter of the hygroscopic agent was 5 to 20 μm, the openability and the sealing performance were improved as compared with Example 10 in which the average particle diameter of the hygroscopic agent was 2 μm.
In Examples 1 and 3 in which polyolefin was used as the sealant base resin, sealing performance and openability were improved as compared with Example 13 in which EVOH was used as the sealant base resin.
In Comparative Example 1 in which the hygroscopic layer was not provided, the sealability was “x” although the openability was “Δ”.
From these results, it was found that the unsealing property and the sealing property can be further improved by applying the present invention.

1 Laminated film 24 for easy-open packaging body Hygroscopic layer 26 Sealant layer

Claims (6)

A base material and a sealant material provided on one surface of the base material,
The sealant material includes a sealant layer having an easy peel property, a moisture absorbing layer provided on one surface of the sealant layer, and an adhesive layer, and the adhesive layer, the moisture absorbing layer, and the adhesive layer on the substrate. The sealant layers are laminated in this order,
The moisture absorbing layer is in contact with the sealant layer,
The adhesive layer includes linear low density polyethylene,
The sealant layer has a thickness of 7 to 40 μm,
The sealant layer comprises a copolymer of polyolefin and α- olefin,
The polyolefin is a linear low density polyethylene, the α-olefin copolymer is an ethylene-butene-1 copolymer, and the content of the ethylene-butene-1 copolymer is 5 to 15% by mass in the sealant layer. Yes,
The adhesive strength between the base material and the sealant material is 2 N / 15 mm or more,
The moisture layer contains moisture absorbent, the average particle diameter of the moisture absorbent Ri 5~20μm der, laminated film for the moisture absorbent Ru zeolites der easy-open packaging body. The moisture-absorbing layer is obtained in accordance with JIS K7209 D method, and the moisture absorption at 40 ° C and 90% RH is 0.5 g / m ² or more. Laminated film. The laminated film for an easy-open packaging body according to claim 1 or 2 , wherein the moisture absorption layer has a thickness of 10 to 30 µm. The laminated film for an easy-open packaging body according to any one of claims 1 to 3 , wherein the adhesive layer has a thickness of 5 to 50 µm. An easy-open packaging body in which the laminated film for the easy-open packaging body according to any one of claims 1 to 4 is formed into a bag. A container body and a lid for sealing the opening of the container body;
The said cover body is an easy-open packaging body which consists of a laminated | multilayer film for easy-open packaging bodies of any one of Claims 1-4 .

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