JPS5876268A - Easily adhesive film - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a polypropylene composite film A/A.
Printing ink adhesion Metal thin film adhesion.

The present invention relates to an easily adhesive film that has good adhesion to organic polymers and improved processability.

Plastic films (including V-) used for food packaging, textile packaging, etc. (hereinafter the same) are adaptable to high-speed printing and reduce residual solvent.

Properties such as low-cost ink and water-based ink adhesion and suitability for make-up coating processing have also become desirable. For example, water-based inks are expected to be used more widely in the future because they do not have the problem of environmental pollution caused by organic solvents. As such ink, for example, one using a cellulose derivative as a binder (product name 1 "ink for cellophane") is known.However, currently commercially available polypropylene thread film printing 11 has special ink! Solvent-based inks are used, and each ink is stored and managed separately, as well as the appropriate anchor coating agent (anchor coating agent for laminating low-melting point films such as polyethylene).

There is a problem in that many types of inks and adhesives must be prepared during the bag-making process, such as the need to manage them.

In order to improve printability, there has also been an attempt to improve the adhesion of the film by coating the film surface with a resin liquid. However, this method complicates the process and is expensive.In addition, polypropylene film has poor metal deposition properties and metal foil properties.
7m carbon dioxide is steep (2) Primer processing is also applied to cover this 75;, evaporated gold 11
To! This tends to result in roughness, impeding the printability and adhesion processability of the vapor-deposited surface, and is also uneconomical since it requires Bufimer treatment.

Boria: ``Pyrene yarn film has various drawbacks as described above, but it has poor adaptability to water-based inks that have been developed in recent years and direct coach inks made of various high-molecular-weight polymers. If this can be achieved, it will be possible to prevent environmental gamma staining due to solvents, omit the pretreatment process, reduce the amount of residual solvent, etc., which is extremely convenient.

Akira Kinen was created with attention to this situation, and the printing ink adhesive 2Kanshin Usui Adhesive was developed.

The object of the present invention is to provide a propylene-based composite film with good adhesion properties such as organic polymer adhesion.

A composite film that has succeeded in achieving the above objective is a base film containing a polypropylene polymer, and a composite film containing an (acrylic acid ester derivative) - (α-olefin) compound on one side of the base film. An amine compound represented by the following formula: 1 to 60 parts.

In the formula R2, R and R are the same or different and are hydrogen, a hydrogen residue, a heterocyclic group, a dialkyl substituted amino group, a diary A/substituted amino group, and Hydrogen in the hydrogen hydride residue may be substituted with a dialkyl-substituted amino group, or R1 and R2 may be bonded to each other via a bulky atom or an a2 elementary atom) - The gist of this book is that a coating layer consisting of 99 to 40 weight parts of a polyα-olefin spinning wheel combination: 100 to 60 parts by weight of olefin and 0 to 40 mm parts of polybutadiene is laminated.

Specific examples and usage examples of the present invention will be explained below.

First, the polypropylene-based polymer forming the pace film (hereinafter referred to as A-) is selected from (1) polypropylene, (2) a-olefin with a disease prime number of 2 or more, preferably 10 or less. More than one species of α-olefin (
However, at least one copolymer of (propylene), (3)
Polymers with good compatibility with the above m*f2+ polys and mers, such as polyethylene, ethylene/propylene copolymer, polybutene-1, ethylene/phytene copolymer, poly-4-methyMpentene-1 Examples thereof include polyolefin-based monopolymers or mixtures with a structure copolymer such as polyolefins, but in short, a monopolymer or a structure copolymer containing propylene as one constituent is not used. In this case, it is desired that the content ratio WIA of the propylene component is 50% by weight or more, and such a polypropylene polymer has the above-mentioned properties (
The improvement effect of the present invention is extremely remarkable.

Next, we will explain the structure of a small K A FfJ (covering layer c or less laminated on one side, referred to as B layer).

B 11 dishes) (acrylic acid ester derivative) - (α
-Olefin) copolymer treated with the above amines (I) C (hereinafter sometimes simply referred to as modified copolymer): 1 to
sofM part and (2) poly α-olefin 100 to 60
Polyα consisting of blind part and polybutadiene 0-40 calyx part
- Olefin polymer: Consists of 99 to 40 [ji], and these will be explained below in order.

First, acrylic acid ester derivatives include all acrylic esters, methacrylic esters, etc., but particularly representative ones include alkyl esters /I/ of acrylic acid and methacrylic acid, such as methyl acrylate, ethyl ester, etc. Vacry V-).

Examples include propyl acrylate, butyl ρ acrylate, pentyl acrylate, methyl methacrylate, methyl methacrylate, and butyl methacrylate. However, the selection of the alkyl groups mentioned above is not particularly critical - so, from an economical point of view, relatively inexpensive ones such as methyl acrylate, ethyl acrylate or methyl methacrylate are most advantageously used.

In addition, as α-olefins, ethylene, propylene, butene-1, pentene-1, methylpentene-1, etc.751
Of these, ethylene is the most versatile (for economic reasons).The composition ratio of the copolymer of acrylic ester and α-olefin selected in this way Although it is not intended to be limiting, after careful consideration, according to VC, the amount of acrylic acid ester units is 1 to 50 moles, preferably 1 to 1 (QMoA).
z%.

More preferably, it contains 2 to 20 moles and 12 (1°C)
The value of the solid viscosity determined by the melting of E2 is 00F3.
3. Tortoise of ~4 Jdl/g is preferable as a raw material for producing the inventive parabolite. Even if a copolymer 1 having an acrylic acid ester unit content of less than 1 mole φ is mixed with a polyolefin polymer after treatment with amines (11), the copolymer 1 with a polyolefin polymer having a content of less than 1 mole φ If the proportion of polymer added is too small, it will not substantially contribute to the improvement of adhesion, and if the proportion exceeds the proper amount, the good mechanical properties inherent in polyalpha-olefins will be mixed. △ Because it is no longer retained in the composition.

stomach. In addition, the content of the acrylic acid-based beauty thread compound alone is 5
A modified copolymer obtained by treating a copolymer containing more than 0 mole with an amino alcohol has poor compatibility with polyα-olefin polymers.

This is substantially unfavorable for improving the printability of polyα-olefin polymers.

Furthermore, since the melting point of a modified copolymer treated with amines (I) of this type of copolymer is generally lower than that of a polyα-olefin polymer, the copolymer has a melting point of 0.05
If it has an intrinsic viscosity value of ~4.5 dl/g
However, it can be used without interruption.

Next, amines #'i are represented by the above general formula (I) in nine types; in other words, they are compounds having at least one nitrogen atom in the molecule that bonds with a hydrogen atom. Nitrogen in the molecule
Having a hydrogen bond is a heavy component, and this moiety converts the Ester A/type side chain into an acid amide type side chain during processing of the above-mentioned copolymer. However, if the molecule has two or more nitrogen atoms that can bond with hydrogen, crosslinking occurs between the copolymers, producing a modified copolymer that cannot be used as a component of the composition of the present invention. Bonding groups other than nitrogen-hydrogen bonds, such as dialkyl-substituted amino groups, do not act at all on the ester-type glIl chain of the above copolymer.

Or, even if it acts, the effect is weak even if treated with an amine compound having those groups.

Modified copolymers that cannot be used as constituents of the composition of the present invention are not produced.

Examples of amine compounds that satisfy these conditions include ammonia, mono(or di)purkylamine, and mono(di)purkylamine.
Or di)arylamine, mono (or Fi di)!
/chloroalkylamine, mono(or di)aralgylamine, aminopyridine.

aminopyrimidine, cyamino-V-kylamine,
Examples include diarylaminoalkylamines, various heterophyte IIJl-like amines, and the like.

In the treatment of the copolymer of a-olefin and acrylic ester compound with such an amine compound, the copolymer and the amine compound are heated at 100°C or higher, preferably 1 lt.
l Fl It is carried out at a humidity of 0 to 400° C. without a catalyst or in the presence of a catalyst [by contacting]. This reaction is carried out according to the amine compounds and the treated crystalline pi.
It can be carried out under increased pressure or normal pressure. Catalysts include sodium methylate, potassium hydroxide, and sodium chloride.

Various substances such as sodium nitrate, sodium carbonate, and sodium amide can be used, but touching is not always necessary. Further, the treatment with the amine compound can be carried out without a solvent, that is, by contacting the copolymer amine compound with the bath, but it can be carried out in the presence of water or an organic bath. You can also do that. usually.

Amine compounds are often obtained in the form of aqueous solutions, but if the amine compound has a concentration ff of 20 or more, it can be used as is and is economical. Organic compounds are mainly used to smooth the reaction and control temperature; suitable examples include benzene and toluene.

Those that can dissolve the copolymer, such as xylene-decalin, cyclohexane, tetrahydrofuran, cyclohexanol, and carbon tetrachloride, are preferred. In general, in the case of no solvent,
i Almost no side reaction occurs, and using -f bath medium, 7'
(If water is used, a small amount of am7nium-type and carboxyl-type bonds will be formed, and if water is used, some carboxyl-VtV-type bonds will be formed.)

The modified copolymer treated with the amine compound of the copolymer 1 prepared in this way was treated under excessive treatment conditions.
By selecting C, the ester side chains of the copolymer or copolymer components in the ml composition are amidated to a range of up to about 98 units. In general, a polymer with a high amidation rate can be obtained by processing at a high temperature.A suitable modified polymer with a high amidation rate can be obtained as a construction material when producing the composition '4 of the present invention. Above.

It is preferable that the amidated-I or acrylic acid ester V units amount to about 1 to 49 mol q6 of the treated product. In the infrared absorption diagram of this modified copolymer, absorption of amide groups and ester V groups can be seen, but depending on the processing conditions, absorption of 9ik-nitrile groups-tribokyl groups and quaternary ammonium salts cannot be observed. The power of being; Oru.

The poly-α-olefin in the poly-α-olefin polymer is a homopolymer or copolymer formed from a-olefin having 2 to 10 carbon atoms (for example, polypropylene, polybutene-1, poly-4-methyV-pentene). 1. Ethylene/propylene copolymer, ethylene/butene-1 copolymer, propylene/butene-1 copolymer, propylene/4-methylpentene-1 copolymer, etc.), or mixtures of these are used, Melt index (2
30℃) is 0.5~''Og/10g1i, K1.(1
~15 g/I Q- will be awarded. The other component, polybutadiene, further enhances the adhesion-improving effect of polyα-olefin by 11iiF [However, if the molecular weight is less than 500, migration is difficult, resulting in a decrease in adhesion and the occurrence of blocking. , and the scratch resistance decreases. On the other hand, if the molecular weight exceeds 20,000, transparency decreases, so one tfi per molecule is 00 to 20.
It is recommended to select from the range of 000. However, a more preferred range is 800 to io, ooo. Also poly α
- The blending ratio of olefin and polybutadiene should be 100 to 60 parts by weight of the former and 1 part of 0 to 40 parts by weight of the latter, and polybutadiene should not be blended (although this is not inconvenient for the purpose of the present invention, JFi3i'). If the amount exceeds 40 parts by weight, the transparent fJJ4 feeling when laminated to the A layer will deteriorate,
This is not desirable because the aesthetic appearance of characters and figures printed from the 8th layer side when viewed from the A layer side deteriorates.

The blending ratio of the modified copolymer and polyα-olefin polymer is 1 to 60 parts by weight of the former to 99 parts by weight of the latter.
~40 parts by weight can be recommended. The reason is that when the former is less than 1 M part, the adhesion of printing ink as BLV, the adhesion of 11kl to thin metals, and the adhesion of 1m to ai1 polymers (especially chlorine-containing resins) are insufficient; is 60
If it exceeds 7 parts by weight, it may cause a decrease in transparency, a decrease in extrusion stability, a decrease in adhesive strength due to thermal recovery after adhesion, etc.
The chemical composition of the composite film according to the present invention is as clarified by the above explanation, since commercial productivity and commercial value will be significantly deteriorated if LVc is used.

Although there are no restrictions on the method of forming layer B and the method of laminating it, the method described below is most preferred. That is, in order to obtain a composite film consisting of layer A and layer B of the present invention, there are methods such as coextrusion, melt extrusion lamination, heating stretching with a roll stretching machine and adhesion simultaneously, or a method of longitudinally stretching one of them and then compositely adhering the other. Furthermore, methods such as longitudinal stretching, adhesion, and subsequent stretching in a direction perpendicular to the above-mentioned direction are being adopted. Of course, these combinations may be used as appropriate, or applied means other than those described above may be used.

When biaxially stretching, there is no particular restriction.To carry out sequential biaxial stretching, the unstretched film is usually first stretched vertically in the longitudinal direction of the film using a roll stretching machine, and then stretched vertically in the longitudinal direction of the film using a tenter. A method of horizontal stretching in the direction of
Transverse stretching and then longitudinal stretching may be performed in the reverse order.In the case of simultaneous biaxial stretching, either the tenter method or the inflation method can be used. In either method, the unstretched film of the present invention can be fully stretched using a stretching ratio, stretching temperature, and stretching speed that are equivalent to r-1J for ordinary polydevopyrene films.

In addition, the A layer and B layer used in the present invention, or the composite film formed by laminating them, may be unstretched or stretched.
1. Although it does not matter what, from the viewpoint of glossiness or machine suitability, it is desirable that the film be stretched in at least one direction. Therefore, the composite film of the present invention includes one in which the A layer and the B layer are uniaxially stretched, one in which the B layer is uniaxially stretched and the A layer is biaxially stretched, and one in which the A layer is uniaxially stretched and the B layer is uniaxially stretched. Examples include those in which the layers are biaxially stretched, those in which the A layer is biaxially stretched and the B layer is not stretched, and those in which the B layer is biaxially stretched and the A layer is not stretched. Now, if I were to specifically describe this in detail, I would say that biaxial stretching is BO
Do not stretch the l-axis, but do not stretch.

When abbreviated as, No-A layer/N0-B layer, UO-A layer/N0-B layer, UO-A layer/UO-B layer.

No-A layer/DO-B layer, BO-A to, Nige/N0-B
Various designs can be made such as layer, BO-A layer/DO-B layer, BO-A layer/BO-B layer, No-A layer/80-B layer, UO-a layer/BO-B layer, etc. .

Although the above design examples are all two-layer composite films, it is also possible to design and manufacture composite films with eight or more layers, if necessary. However, when used for bag making, 2
A layer or eight layers is sufficient.

There is no need to set any particular restrictions on the thickness of the A layer and the B layer, and there is almost no limit on the thickness of the A layer in particular.
The layer is desirably designed to have a final thickness of 0.1 to 80 μm, preferably 0.4 to 15 μm, and may be designed to be even thicker depending on the application. That is, when the B layer is less than 0.1 μm, the adhesion stability deteriorates,
On the other hand, if it exceeds 80 μm, there is a drawback that transparency is inhibited, which limits the use of the film. The most preferred is 10μm
It is as follows.

The composite film of the present invention constructed as described above has (1) adhesion to an adhesive containing a cellulose derivative or printing ink using this as a binder, and (2) various types of adhesives such as acrylic, vinyl chloride, and vinylidene chloride. Adhesion to polymer or copolymer-based adhesives or printing/rinks using these as binders (3) Excellent properties in adhesion to metal vapor deposited layers and metal foils, etc. If you use the characteristics of , you can get +11 as described below! 1, which can be provided as a composite composition product of various types. For example, the adhesion with a printing ink using a cellulose derivative as a binder is described in the following JIIIv.

As the cellulose derivative, trocellulose in the nitrification pattern 1 is preferred, but other examples include cellulose ethers such as methylcellulose, ethylcellulose, and hydroxyethylcellulose, and cellulose esters such as cellulose propionate. In addition to these cellulose derivatives, polyamide resins made of condensates of polymerized fatty acids and polyamines, rubber derivatives such as i-based rubber and chlorinated rubber, rosin,
Ester rubbers such as glycerin esters, urea, amine resins such as melamine resins, etc. may be added, but are not limited thereto. For example, when it is contained as a nitrification binder, the degree of nitrification is usually 9 to 12.5%, and the degree of polymerization is also nido-If-L! The properties of /Relose are shown in Table 1.The viscosity according to the Sulherculene method is 20 seconds to about 1 second. In the mixture containing the cellulose derivative described above, inorganic or organic pigments and dyes are further used, such as titanium white, yellow lead, copper powder, phthalocyanine filler, etc., as appropriate depending on the color. These mixtures are diluted with alcohols, esters, ketones, and various organic solvents such as ethylbenzene acetate, toluene, and kyllene.
Use after adjusting the viscosity. Furthermore, volatile varnishes and the like can also be used as mauve colorants. Such printing ink is overprinted once or several times over part or the entire surface of the B layer. These printing ink layers adhere extremely well to the film, and when rubbed,
It is sufficiently resistant to scratching and separation by adhesive tape, etc., and therefore, even if other polymers or film-like materials are laminated, the practical strength at the ink-film interface is determined by the weight, for example, for packaging materials. It varies depending on the shape, properties, etc., but 45 f/1
The film used in the present invention exhibits extremely good adhesion to printing inks containing cellulose derivatives when subjected to corona discharge treatment, compared to conventional polypropylene films. Another characteristic effect of the present invention is that a higher processing effect can be obtained by using the same power as the conventional corona discharge power (for polypropylene film). In addition, while conventional polypropylene films had the disadvantage of showing a plateauing phenomenon at a certain level even if the corona discharge power consumption was increased, the B layer of the composite film of the present invention has a power consumption that is almost proportional to the power consumption. It also has the advantage of providing significant processing effects.゛The structure of the composite film according to the present invention is as described above, but the A-layer and B-layer contain a control agent, a lubricant, an anti-blocking agent, a dye, a pigment, a weathering agent, an ultraviolet inhibitor, and various stabilizers. It is free to add.

For example, when synthetic zeolite is incorporated into either or both of layer A and layer B (generally layer B), antistatic properties and slipperiness are improved.

That is, synthetic zeophyte is a highly hygroscopic component and is thought to increase the moisture content of the film by adsorbing moisture in the atmosphere, thereby reducing electrical resistance and exhibiting antistatic properties. In order to exhibit this effect, it is desirable that the synthetic zeophyte has an average particle size of 0.2 to 20 μm and is contained in the B layer at a ratio of 0.05 to 6% by weight, for example. The average particle size of the synthetic zeophyte is 0.
If the thickness is less than 2 μm, the effect of antistatic properties, anti-blocking properties, etc. will be poor, and if it exceeds 20 μm, the transparency will tend to decrease. If the amount is less than 0.05% by weight, the above effects will not be exhibited, while if it exceeds 6% by weight, the transparency will tend to decrease.

The composite film constructed as described above is mainly used as a packaging material, but in this case, a printing ink layer, an adhesive layer, or a resin (especially chlorine-containing resin) layer is formed on the B layer side, and It is preferable to form bags after laminating a polymer having a lower melting point than layer A. Examples of other uses include coating films or tapes for metal products and plastic products.

Next, Examples and Comparative Examples of the films of the present invention will be described, and the characteristics of the produced films were measured according to the following measurement method.

(1) Transparency (haze) Conforms to JIS K6714.

(2) Adhesiveness of printing ink A commercially available cellophane tape was brought into close contact with the entire printed surface and then peeled off at high speed, and the size of the remaining area of the printing ink was determined.

Cellophane ink CL-C (manufactured by Dainippon Ink Co., Ltd.) was used as the printing ink, and the evaluation was based on the following criteria.

Evaluation points Peeling rate 5 0% 4 - 10% 8 - 20% 2 - 50% 1 50%
2. (3) Adhesion of vapor-deposited Al A commercially available cellophane tape was adhered to the Ae-deposited surface and tested and evaluated in the same manner as in (2). The peeling directions were the orientation direction of the film resin (vertical) and the direction perpendicular to this (horizontal). In Table 1, "immediately" means "immediately after At vapor deposition", and "after treatment". is r40″C, 90SRH and 4
This means "after knee-singing for eight hours."

(4) Lamination strength Regarding the printing ink, printing was performed on layer B, and then low density polyethylene was melt-extruded and laminated, and the lamination strength of the printed area was measured. The test results show that the laminate layer was peeled at 200 txt/mi using the 90 degree peeling method.
For At vapor deposition, the average strength value (n=5) when peeled off at a speed of n is shown.For At vapor deposition, the results of a similar test for extrusion lamination after formation of a 500 μm AJ vapor deposited layer are shown for PVDC coating. is 8 f/m
A similar laminate was applied to the PVDC coated surface of the sample, and the results were then similarly tested.

(5) Durability of the bag (in the case of printing ink) After printing on layer B and laminating low density polyethylene by melt extrusion on it, using automatic filling packaging aati, 180 ° C.
200 pieces/min (D condition) The starting critical pressure was measured, and the influence of the adhesive force between the base material and the ink was measured.

(Powder adhesion to 6-bag bags When bread crumbs are automatically filled and packaged, the state of adhesion of bread crumbs to the heat-sealed part of the bag is investigated fc. The evaluation is in 4 stages, and those with no adhesion at all are marked with ◎, indicating that there is no practical problem. Mark ○ if there is no significant adhesion, and mark △ if there is some adhesion.
Those in which adhesion to the extent of causing damage to the seal portion was observed were indicated by an X mark.

Example 1 Iso#cutiic polypropylene vy (Ml-8.0g/
1 minute), 0.2 weight of 1 synthetic zeotsuishi powder (particle size: 2.6 μm) and 1.0 weight of A/frame 71/amine ethylene adduct were added to form layer A. .

On the other hand, methyl acrylic copolymer (V-)/propylene copolymer C (methyl acrylate content: IQ-eA/1G) treated with methylamine (86 weight) and propylene/ethylene copolymer C (ethylene content: 0) , 6 weight regret) 66
A composition (I) consisting of a heavy weight was prepared. In addition, the above-mentioned modified copolymer (36 weight) and Boso propylene (56 weight)
A composition (1) was prepared consisting of a polyolefin mixture (66% by weight) consisting of polyolefin (66% by weight). These compositions (I) t OI) K each 2# silicon oxide 0
．． Adding 8% by weight and 0.06% by weight of erucic acid amide,
These are layered as B layer on one side of A layer by coextrusion method, and A
An unstretched composite fiber having a layer of 760 μm and a layer B of 40 μU01 was obtained. Next, the film was stretched 4.5 times in the longitudinal direction at 1jm&''C, and 9.0 times in the transverse direction at 160°C in I!, after which the film was biaxially stretched, and the BJI side was subjected to a core discharge treatment. By this, a composite film with a surface wetting tension of 45 dynes/steel was obtained.BJ11K printing, At vapor deposition, PVDC:
I-), low 91 [polyethylene laminate and aati. The results of each test are summarized in Table 1 below.

Example 2 In the combination of gI Example 10A layer and composition.

Exactly the same treatment and evaluation were performed for the case where no synthetic zeolite was added to the A layer.

Example B In Example 2, 0.2 parts and 11 parts of synthetic zeolite having a particle size of 4 μm were mixed in layer B, and the same treatment and evaluation were performed. However, as the printing cylinder ink, a water-based ink of Atari A/thread diluted with water-isopropanol-based sg was used.

Example 4 In Example I, the ink was changed to a water-based ink, and the same treatment and evaluation were performed.

Example 6 A propylene/ethylene/methyl methacrylate copolymer (66.5 parts by weight, 70.5 parts by weight/83 parts by weight of methacrylate) was treated with dimethylamine, and the intrinsic viscosity was 0.
．． 75 modified copolymer was damaged. 15 parts by weight of the polymer and propylene/ethylene copolymer ('96.5 parts by weight/8.
86 parts by weight (5 parts by weight) were mixed and subjected to exactly the same treatment and evaluation as in Example 1.

Comparative Example 1 Similar evaluations were performed on the film of the A layer alone in Example 1, which was similarly stretched and subjected to corona discharge treatment.

Comparative Example 2 Layer A was formed with the same composition as the base material of Example 10 and was biaxially stretched. Then, on one side thereof, a melt-extrusion lamination of ethylene/vinyl acetate copolymer was formed to form a 15 μm thick BNl. The B layer is subjected to a discharge treatment.

Wet tension was set to 48 dynes/α. Example 1 for layer B
The same treatment as above was performed, and the same evaluation was made.

Claims (1)

[Claims] 11) A small base film containing a polypropylene polymer (both on one side. (Acrylic acid ester derivative) - (α-olefin)
A copolymer treated with amines represented by the following formula: 1 to 60 parts by weight. In formula C, vt', R''ld are the same or different, and are hydrocarbon residues, heterocyclic groups, dialkyl-substituted amino groups, diaryl-substituted amino groups, and hydrogen in the above hydrocarbon J! group is It may be substituted with a sialkyl A/carboxylic acid-substituted amino group, or it may be bonded to each other through R1 and R2 base atoms, ffl elementary atoms, and oxygen atoms.%A) Poly α-olefin 100~ An easily adhesive film characterized by laminating a coating layer consisting of 99 to 40 parts by weight of a polyolefin polymer consisting of 0 to 40 parts by weight of BO and 0 to 40 parts by weight of polybutadiene. The easily adhesive film according to claim 1, which contains 0.05 to 6 weight of synthetic zeolite having a particle size of 0.2 to 20 μm.