JPH05163396A - Elastomer composition, elastomer film, and composite film prepared therefrom - Google Patents

Abstract

PURPOSE:To improve adhesiveness stretchability, and interlaminar adhesive strength by compounding an ethylene-propylene-diene terpolymer rubber, an ethylene-vinyl acetate copolymer, and a specific polyester. CONSTITUTION:35-65wt.% ethylene-propylene-diene terpolymer rubber having an ethylene content of 60-69mol%, a propylene content of 30-40mol%, a diene content of 1-10mol%, and an MI of 0.1-5.0g/10min, 25-60wt.% ethylene-vinyl acetate copolymer having a vinyl acetate content of 5-30wt.% and an MI of 0.2-25g/10min, and 5-40wt.% satd. polyester having a b.p. of 110-180 deg.C are melt mixed at 150-180 deg.C to give a thermoplastic elastomer compsn., which is formed by inflation into an elastomer film having a thickness of 15-120mum. The film is laminated with a (nonwoven) fabric having a density of 20-100g/m<2> at 100-200 deg.C and 1-6kgf/cm<2> to give a composite film.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an elastomer composition, and more particularly to an elastomer composition having excellent adhesion to various plastic materials, metals, papers, fibrous base materials and the like.

Further, the present invention relates to an elastomer film composed of the above-mentioned elastomer composition and a composite film using the same, and particularly when it is excellent in adhesiveness and stretchability of plastic, metal, paper and the like, and when laminated with a fibrous base material. The present invention relates to an elastomer film which gives a composite film excellent in resistance to peeling due to washing and the like, and a composite film using the same.

[0003]

2. Description of the Related Art Elastomer films are widely used in various fields in combination with various materials such as fibrous base materials, various plastics, metals and papers.

For example, a composite film obtained by combining an elastomer film and a fibrous base material has been frequently used in recent years as a breathable film for clothes, sanitary goods, medical equipment and the like. ..

As the air-permeable film, an olefinic thermoplastic elastomer (composition) containing ethylene-propylene copolymer rubber (EPR), ethylene-propylene-diene copolymer rubber (EPDM) as a main component, etc. Various films have been proposed in which a woven fabric such as cotton, polyester, cupra and the like, a knit, a non-woven fabric and the like are bonded by heating and pressurizing (JP-A-63-25200, JP-A-63-25200). Akira
63-231900, JP-A 1-183998).

However, in the above composite film, polyester, cotton, cupra and the like are used as a base material for adhering the olefinic thermoplastic elastomer film. The olefinic thermoplastic elastomer is ethylene-propylene-diene Since it is based on polymer rubber (EPDM), even if it is subjected to thermal lamination or dry lamination, it does not necessarily have sufficient adhesion and adhesion to the above-mentioned substrate, and it can be easily peeled off by washing multiple times. There is a problem that it will end up. In particular, with a water-absorbent material such as cotton, even if it is dipped in water, it peels off. When a polyester woven fabric or the like is used as the base material, since it is almost adhered only by the anchor effect, it is easily peeled off by washing. Such washing resistance is particularly important when the stretchable and breathable composite film is used in a field such as clothing.

Further, even when the elastomer film is combined with various plastics, metals, papers, etc.,
Olefin-based thermoplastic elastomers such as ethylene-propylene-diene copolymer rubber (EPDM) do not necessarily have sufficient adhesion and adhesion to plastics such as polyester, metal, paper, etc. There is a problem in that it is not sufficiently suitable for a field in which followability to bending is required, such as when combined.

Therefore, an object of the present invention is to provide an elastomer composition having excellent adhesiveness to various plastic materials, metals, papers, fibrous base materials and the like.

Another object of the present invention is a composite film which is excellent in adhesiveness and stretchability of plastics, metals, papers, etc., and is also excellent in resistance to peeling due to washing etc. when laminated with a fibrous base material. It is to provide an elastomer film that gives the above and a composite film using the same.

[0010]

As a result of earnest research in view of the above objects, the present inventors have found that an olefinic thermoplastic elastomer comprising an ethylene-propylene-diene copolymer rubber and an ethylene-vinyl acetate copolymer. From the elastomer composition prepared by blending the low melting point polyester to the composition, the elastomer film formed into a film by the air-cooling inflation method is bonded to a woven fabric, a non-woven fabric or a knitted fabric made of various materials such as cotton, polyester and cupra. It was found that the washing property is good and the washing resistance is significantly improved. Further, the present inventors have found that the film of the elastomer composition has good adhesiveness not only to fibrous base materials but also to films of thermoplastic resins such as polyester, metal foil, paper and the like. It was The present invention has been made based on the above.

That is, the elastomer composition of the present invention comprises (a) an ethylene-propylene-diene copolymer rubber 35
~ 65 wt%, and (b) ethylene-vinyl acetate copolymer 25 ~
60% by weight and (c) 5 to 40% by weight of polyester having a melting point of 110 to 180 ° C.

Further, the elastomer film of the present invention is
(a) Ethylene-propylene-diene copolymer rubber 35 365
A thermoplastic elastomer composition containing (b) an ethylene-vinyl acetate copolymer (25 to 60% by weight) and (c) a polyester having a melting point of 110 to 180 ° C. (5 to 40% by weight). It is characterized by being done.

Further, the composite film of the present invention comprises (a) 35 to 65% by weight of ethylene-propylene-diene copolymer rubber.
And (b) 25% to 60% by weight of ethylene-vinyl acetate copolymer
And (c) a polyester having a melting point of 110 to 180 ° C.
It is characterized in that a film formed from a thermoplastic elastomer composition containing 40% by weight and a woven cloth, a non-woven cloth or a knitted cloth are stuck together.

The present invention is described in detail below. First, the elastomer composition of the present invention will be described. The elastomer composition of the present invention contains (a) an ethylene-propylene-diene copolymer rubber, (b) an ethylene-vinyl acetate copolymer, and (c) a polyester having a melting point of 110 to 180 ° C. ..

In the present invention, the (a) ethylene-propylene-diene copolymer rubber (EPDM) is a copolymer containing ethylene, propylene and a diene compound. Examples of the diene compound include ethylidene norbornene and 1,4-
Hexadiene, dicyclopentadiene and the like.

The ethylene-propylene-diene copolymer rubber (EPDM) has an ethylene content of 60 to 69 mol%,
The propylene content is preferably 30 to 40 mol% and the diene compound content is preferably 1 to 10 mol%. A more preferable range is that ethylene is 62 to 66 mol% and propylene is
33 to 37 mol% and the diene compound are 1 to 5 mol%. The melt index (MI, 190 ° C., 2.16 kg load) is preferably in the range of 0.1 to 5.0 g / 10 min, more preferably 0.30 to 1.0 g / 10 min, and further preferably
It is within the range of 0.35 to 0.50 g / 10 minutes.

In the present invention, (b) the ethylene-vinyl acetate copolymer (EVA) has a vinyl acetate content of 5 to 30% by weight.
Those within the range are preferred. The ethylene-vinyl acetate copolymer has a melt index (190 ° C, 2.16 kg load) of usually 0.2 to 25 g / 10 minutes, preferably 15 to 20 g / 10.
Minutes.

In the present invention, the (c) polyester is 110
It is a saturated polyester having a melting point of 180 ° C. The polyester is a condensation product of a dibasic acid and a diol, and an aliphatic polyester is particularly preferable. If the melting point of the polyester (c) is out of the above range, it becomes difficult to melt-knead the polyester with the components (a) and (b).

The polyester having such a melting point is
Manufactured as a substance having a desired melting point by controlling the crystal structure by copolymerizing an aliphatic dicarboxylic acid such as adipic acid and the like with 1,4 butanediol as a main raw material and various other dibasic acids and diols. can do. Commercial products of such polyesters include Toyobo Co., Ltd.
"Byron," etc. made by the manufacturer are listed.

The mixing ratio of (a) ethylene-propylene-diene copolymer rubber (EPDM), (b) ethylene-vinyl acetate copolymer (EVA), and (c) polyester is (a) +
The ethylene-propylene-diene copolymer rubber is 35 to 65% by weight, preferably 100 to 50% by weight of (b) + (c).
40 to 60% by weight, (b) ethylene-vinyl acetate copolymer is 25 to 60% by weight, preferably 30 to 50% by weight,
(c) The polyester is 5 to 40% by weight, preferably 10 to 30% by weight.

(A) When the ethylene-propylene-diene copolymer rubber is less than 35% by weight, the elasticity of the obtained film decreases, and when it exceeds 65% by weight, the moldability and soft feeling of the obtained film are reduced. descend.

25% by weight of ethylene-vinyl acetate copolymer
If it is less than 60% by weight, the moldability and softness of the obtained film are lowered, and if it exceeds 60% by weight, the elasticity of the obtained film is lowered.

When the content of polyester is less than 5% by weight, the effect of improving the adhesiveness and washing resistance by the addition thereof is not sufficient, and when it exceeds 40% by weight, the moldability and stretchability are deteriorated.

Further, in the present invention, in addition to the above resin components, an antioxidant, an ultraviolet absorber, an antistatic agent, a coloring agent and the like can be appropriately blended. However, in the present invention, the addition of the inorganic filler makes it difficult to make the elastomer film into a thin film, and thus it is preferably not added.

The elastomer film made of the elastomer composition of the present invention as described above can be formed into a film by the T-die method or the inflation method, but can be stretched in the machine direction and the transverse direction simultaneously with the film formation, so that the longitudinal and transverse strength balance can be improved. The air-cooled inflation method is preferable because it gives a good thin film.

First, ethylene-propylene-diene copolymer rubber (EPDM), ethylene-vinyl acetate copolymer (EV
A) and the low melting point polyester are kneaded at a temperature of about 150 to 180 ° C. It is not necessary to knead the three components at the same time. First, ethylene-propylene-diene copolymer rubber (EPDM) and ethylene-vinyl acetate copolymer (EVA) are melt-kneaded, and then polyester is added. Further kneading is preferable.

After kneading, it is formed into a film.
Although the thickness of the film is appropriately selected depending on the application, it is usually preferably 15 to 120 μm in the inflation method (air cooling method). If it is thinner than 15 μm, the film strength will be reduced, and if it is thicker than 120 μm, film formation will be difficult. Film formation is preferably carried out by an inflation molding method (air cooling method) at a resin temperature of 150 to 175 ° C. so that the blow ratio (bubble diameter / die slit diameter) is in the range of 2.0 to 5.0. When the film has a thickness of more than 120 μm, it is preferable that the film is formed by the T-die method.
A film having a thickness of 0 to 2000 μm is formed.

Next, the composite film of the present invention using the elastomer film thus obtained will be described.

Woven fabric to be laminated with the elastomer film,
As the non-woven fabric or knitted fabric, those made of natural fibers such as polyester, polyamide, cotton, cupra and the like, synthetic fibers, chemical fibers and the like can be used. Gauze and other plain weave fabrics, spunbond method, melt blow method, etc. Various types of nonwoven fabrics, knitted fabrics such as vertical knitting or horizontal knitting, etc. can be used. The melting point or second-order transition point of a woven fabric, a non-woven fabric, or a knit fabric is preferably higher than that of the film by at least 20 ° C. or more. The basis weight of such woven fabric, non-woven fabric or knitted fabric is preferably 20 to 100 g / m ² .

The film of the elastomer composition as described above and the woven fabric, the non-woven fabric or the knitted fabric can be laminated by thermal lamination or the like.

The thermal lamination is preferably carried out at a temperature of 100 to 200 ° C. and a pressure of 1 to 6 kgf / cm ² , particularly at a temperature of 130 to 180 ° C. and a pressure of 3 to 6 kgf / cm ^2. preferable. By setting the above temperature and pressure,
The elastomer film and the woven cloth, non-woven cloth or knitted cloth can be fixed, and the film can be made microporous, and the air permeability (Gurley method) can be good at 30 seconds / 100 ml or less. ..

Such thermal lamination is preferably carried out by an apparatus comprising a heating roll and a receiving roll. For example, the heating roll is preferably 100 to 200 ° C., more preferably 130 to 180 ° C., and the receiving roll is preferably
30 to 150 ° C, more preferably 50 to 120 ° C, the above-mentioned pressure and preferably 5 to 30 m / min, more preferably 10 to
It is preferable to carry out at a speed of 20 m / min. If the pressure-bonding conditions are out of the range, the adhesive strength between the film and the woven fabric, the non-woven fabric or the knitted fabric will be insufficient.

Alternatively, one or both of the film and the base material may be coated with an adhesive and heat-bonded, that is, the lamination may be performed by a so-called dry lamination method. As the adhesive, a urethane-based adhesive, an acrylic-based adhesive, an epoxy-based adhesive, or the like can be used after being dissolved in a solvent together with a curing agent and the like as necessary.

The film and the substrate may be bonded to each other in a one-to-one manner, or two substrates may be used to press-bond the elastomer films from both sides.

The composite film thus obtained is
Adhesion between the elastomer film and the substrate is good, particularly excellent in wash resistance, and peeling does not occur even after washing 8 times or more.

The elastomer composition of the present invention has good adhesiveness not only to the fibrous base material as described above, but also to thermoplastic resins such as polyester, metal, paper and the like. For example, the above-mentioned elastomer film can be stuck to various plastic films, metal foils, papers and the like. In this case, the both can be laminated by thermal lamination, dry lamination, or the like, as in the case of the composite film. Thermal lamination
The heating roll is not limited to one including a heating roll and a receiving roll, and may be performed by an ordinary heat press machine.

The conditions for laminating depend on the type of material used, the thickness, etc., but it is preferable to carry out at a temperature of 100 to 200 ° C. and a pressure of 1 to 6 kgf / cm ² , and particularly 130 to It is preferable that the temperature is 180 ° C. and the pressure is 3 to 6 kgf / cm ² .

[0038]

In the present invention, an elastomer film is formed from an elastomer composition containing an ethylene-propylene-diene copolymer rubber, an ethylene-vinyl acetate copolymer and a low melting point polyester by an air-cooled inflation method. Since it is a composite film of woven cloth, non-woven cloth or knitted cloth made of various materials such as cotton, polyester, cupra, etc., it has good air permeability and adhesion between the elastomer film and the woven cloth, non-woven cloth or knitted cloth. Good washability and significantly improved washing resistance.

The above-mentioned elastomer film exhibits good adhesiveness not only to fibrous base materials but also to various plastic films, metal foils, papers and the like.

Although the reason why such an effect is obtained is not necessarily clear, the polar group of the low melting point polyester is used for materials such as cotton, polyester, cupra, etc., or various plastic films, metal foils, papers, etc. It is believed that this is because it exhibits good affinity.

[0041]

The present invention will be described in more detail by the following specific examples. Example 1 Ethylene-Prompylene-Diene Copolymer Rubber (EPDM,
Vistalon 3708, manufactured by Exxon Chemical Co., Ltd., 60% by weight,
40% by weight of ethylene-vinyl acetate copolymer (EVA, DQDJ-3269, manufactured by Nippon Unicar Co., Ltd.) and a total of 85 parts by weight of low melting point polyester (manufactured by Toyobo Co., Ltd., Byron GM900, melting point) The composition obtained by adding 15 parts by weight (113 ° C.) was melt-kneaded by an extruder and an elastomer film of 30 μm was obtained by an air cooling inflation method.

This film and polyester woven fabric (PET,
With a basis weight of 40 g / m ² ) and a polyester woven fabric on the heating roll side, the heating roll temperature is 175 ° C, the receiving roll temperature is 80 ° C,
Thermal lamination was performed at a pressure of 3 kgf / cm ² and a pressure of 5 m / min to produce a composite film.

The air permeability of this composite film was measured by the Gurley method (JIS P8117) and found to be 15 seconds / 100 ml. Further, the obtained composite film was evaluated for adhesive strength and wash resistance. The results are shown in Table 1 together with the thickness of the elastomer film, the amount of the polyester resin added, the fiber material, the fiber type, and the lamination method.

Example 2 Ethylene-Prompylene-Diene Copolymer Rubber (EPDM,
Vistalon 3708, manufactured by Exxon Chemical Co., Ltd., 60% by weight,
40% by weight of ethylene-vinyl acetate copolymer (EVA, DQDJ-3269, manufactured by Nippon Unicar Co., Ltd.) and a total of 85 parts by weight of low melting point polyester (manufactured by Toyobo Co., Ltd., Byron GM900, melting point) The composition obtained by adding 15 parts by weight (113 ° C.) was melt-kneaded by an extruder and an elastomer film of 40 μm was obtained by an air cooling inflation method.

One piece of this film and polyester woven cloth (PE
T, basis weight 40 g / m ² ) with urethane adhesive (dissolved in ethyl acetate solution together with curing agent), heating roll side as polyester woven fabric, heating roll temperature
Dry lamination was performed at 80 ° C., a receiving roll temperature of 30 ° C., a pressure bonding pressure of 2 kgf / cm ² , and a pressure bonding speed of 3 m / min to produce a composite film.

The obtained composite film was evaluated for adhesive strength and wash resistance in the same manner as in Example 1. The results are shown in Table 1.

Example 3 Ethylene-Prompylene-Diene Copolymer Rubber (EPDM,
Vistalon 3708, manufactured by Exxon Chemical Co., Ltd., 60% by weight,
40% by weight of ethylene-vinyl acetate copolymer (EVA, DQDJ-3269, manufactured by Nippon Unicar Co., Ltd.) and a total of 85 parts by weight of low melting point polyester (manufactured by Toyobo Co., Ltd., Byron GM900, melting point) The composition obtained by adding 15 parts by weight (113 ° C.) was melt-kneaded by an extruder and an air-cooled inflation method was used to obtain an 80 μm elastomer film.

One piece of this film and a cupra knitted cloth (CUP,
Bembell Grayon, manufactured by Asahi Kasei Co., Ltd., basis weight 55g /
m ² ) and the heating roll side as polyester woven fabric,
Heat lamination was performed at a heating roll temperature of 175 ° C., a receiving roll temperature of 80 ° C., a pressure bonding pressure of 5 kgf / cm ² , and a pressure bonding speed of 5 m / min to produce a composite film.

The obtained composite film was evaluated for adhesive strength and wash resistance in the same manner as in Example 1. The results are shown in Table 1.

Example 4 Ethylene-Prompylene-Diene Copolymer Rubber (EPDM,
Vistalon 3708, manufactured by Exxon Chemical Co., Ltd., 60% by weight,
40% by weight of ethylene-vinyl acetate copolymer (EVA, DQDJ-3269, manufactured by Nippon Unicar Co., Ltd.) and a total of 85 parts by weight of low melting point polyester (manufactured by Toyobo Co., Ltd., Byron GM900, melting point) The composition obtained by adding 15 parts by weight (113 ° C.) was melt-kneaded by an extruder and an elastomer film of 40 μm was obtained by an air cooling inflation method.

One piece of this film and a cupra knitted cloth (CUP,
Bembell Grayon, manufactured by Asahi Kasei Co., Ltd., basis weight 55g /
m ² ) and urethane adhesive (dissolved in an ethyl acetate solution together with the effect agent), the heating roll side is made of polyester woven fabric, the heating roll temperature is 80 ° C, the receiving roll temperature is 30 ° C, and the pressure is 2 kgf. Dry lamination was performed at a pressure of 3 m / min and a pressure of 3 cm / cm ² to produce a composite film.

The obtained composite film was evaluated for adhesive strength and wash resistance in the same manner as in Example 1. The results are shown in Table 1.

Example 5 Ethylene-Prompylene-Diene Copolymer Rubber (EPDM,
Vistalon 3708, manufactured by Exxon Chemical Co., Ltd., 60% by weight,
40% by weight of ethylene-vinyl acetate copolymer (EVA, DQDJ-3269, manufactured by Nippon Unicar Co., Ltd.) and a total of 80 parts by weight of these, a low melting point polyester (manufactured by Toyobo Co., Ltd., Byron GM900, melting point) A composition obtained by adding 20 parts by weight of 113 ° C.) was melt-kneaded by an extruder and an elastomer film of 50 μm was obtained by an air cooling inflation method.

One piece of this film and polyester knitted fabric (PE
T, basis weight 40 g / m ² ), heating roll side is polyester woven fabric, heating roll temperature is 175 ℃, receiving roll temperature
Thermal lamination was performed at 80 ° C., a pressure of 4 kgf / cm ² , and a pressure of 5 m / min to produce a composite film.

The obtained composite film was evaluated for adhesive strength and washing resistance in the same manner as in Example 1. The results are shown in Table 1.

Example 6 Ethylene-Prompylene-Diene Copolymer Rubber (EPDM,
Vistalon 3708, manufactured by Exxon Chemical Co., Ltd., 60% by weight,
40% by weight of ethylene-vinyl acetate copolymer (EVA, DQDJ-3269, manufactured by Nippon Unicar Co., Ltd.) and a total of 70 parts by weight of low-melting point polyester (manufactured by Toyobo Co., Ltd., Byron GM900, melting point) The composition obtained by adding 30 parts by weight (113 ° C.) was melt-kneaded by an extruder and an elastomer film of 30 μm was obtained by an air-cooling inflation method.

One piece of this film and cotton fabric (COT, weight 40
g / m ² ), using a polyester woven fabric on the heating roll side, heat laminating at a heating roll temperature of 175 ° C., a receiving roll temperature of 80 ° C., a crimping pressure of 3 kgf / cm ² , and a crimping speed of 5 m / min to form a composite film. Manufactured.

The air permeability of this composite film was measured by the Gurley method (JIS P8117) and found to be 20 seconds / 100 ml. Further, the obtained composite film was evaluated for adhesive strength and washing resistance in the same manner as in Example 1. The results are shown in Table 1.

Comparative Examples 1 to 6 Ethylene-Prompylene-Elastomer Film
Consists of 60% by weight of diene copolymer rubber (EPDM, Vistalon 3708, manufactured by Exxon Chemical Co., Ltd.) and 40% by weight of ethylene-vinyl acetate copolymer (EVA, DQDJ-3269, manufactured by Nippon Unicar Co., Ltd.) Composite films were produced in the same manner as in Examples 1 to 6 except that the one produced from the composition was used.

The obtained composite film was evaluated for adhesive strength and wash resistance in the same manner as in Example 1. The results are shown in Table 1.

Table 1 Manufacturing conditions Example 1 Example 2 Example 3 Example 4 Example 5 Example 6 Elastomer film Thickness (μm) 30 40 80 40 50 30 Amount of polyester resin added (parts by weight) 15 15 15 15 20 30Woven or knitted fabric Material PET PET CUP CUP PET COT Type Woven Fabric Woven Knitted Knitted Knitted WovenLamination Method⁽¹⁾ Heat heat heat heat heat heatProperties of composite sheet Adhesive strength⁽²⁾ Large Medium Large Medium Large Large Wash resistance⁽³⁾ 13 15 20 or more 20 or more 12 8

Table 1 (continued) Manufacturing conditions Comparative example 1 Comparative example 2 Comparative example 3 Comparative example 4 Comparative example 5 Comparative example 6 Elastomer film thickness (μm) 30 40 80 40 50 30 Addition rate of polyester resin (weight ) − − − − − − Woven or knitted material PET PET CUP CUP PET COT Type Woven Woven Knitted Knitted Knitted Woven Lamination Method ⁽¹⁾ Heat Dry Heat Dry Heat Heat Physical Properties of Composite Sheet ⁽²⁾ Large Medium Large Medium Large Large Washing resistance ⁽³⁾ 0 6 4 8 2 0

(1) Lamination method: "heat" means thermal lamination and "dry" means dry lamination. (2) Adhesive strength: A peeling test according to JIS K6772 was attempted to peel the film, and the film was judged according to the following criteria. Large: The film is destroyed. Medium: The film does not break, but the adhesive strength is strong. Small: Peels off easily. (3) Washing resistance: According to JIS L-844, Dyeing fastness test method for washing, 1 liter beaker with warm water at 50 ° C
Add 200 g, add 1 g of detergent and stir to make 50 mm
Put a 40mm sample in a beaker, stir for 10 minutes,
Rinse for 1 minute, the above operation is set as one set, and the number of times the set is repeated until the composite film is peeled off is displayed.

As is apparent from Table 1, the composite film of the present invention has the same initial adhesive strength as that of the corresponding comparative example, but has significantly improved washing resistance. ing.

Example 7 Ethylene-Prompylene-Diene Copolymer Rubber (EPDM,
Vistalon 3708, manufactured by Exxon Chemical Co., Ltd., 60% by weight,
40% by weight of ethylene-vinyl acetate copolymer (EVA, DQDJ-3269, manufactured by Nippon Unicar Co., Ltd.) and a total of 80 parts by weight of these, a low melting point polyester (manufactured by Toyobo Co., Ltd., Byron GM900, melting point) A composition obtained by adding 20 parts by weight of 113 ° C.) was melt-kneaded by an extruder and an air-cooled inflation method was used to obtain an elastomer film of 70 μm.

One piece of this film and paper (Hokuetsu Paper Mills Ltd.)
Made with a basis weight of 72 g / m ² ) with the heating roll side as paper,
Heat lamination was performed at a heating roll temperature of 175 ° C., a receiving roll temperature of 80 ° C., a pressure bonding roll clearance of 0.10 mm, and a pressure bonding speed of 5 m / min to produce a bonding film of an elastomer film and paper.

The obtained film was subjected to the same test as the peel test in "Adhesive strength" of Example 1,
When the paper and the elastomer film were peeled off, the adhesive strength was so high that the paper broke.

Example 8 Ethylene-Prompylene-Diene Copolymer Rubber (EPDM,
Vistalon 3708, manufactured by Exxon Chemical Co., Ltd., 60% by weight,
40% by weight of ethylene-vinyl acetate copolymer (EVA, DQDJ-3269, manufactured by Nippon Unicar Co., Ltd.) and a total of 80 parts by weight of these, a low melting point polyester (manufactured by Toyobo Co., Ltd., Byron GM900, melting point) A composition obtained by adding 20 parts by weight of 113 ° C.) was melt-kneaded by an extruder and an elastomer film of 50 μm was obtained by an air cooling inflation method.

One piece of this film and polyester film
(Toray Industries, Ltd., Lumirror, thickness 40 μm) and heating roll side using polyester film as heating roll temperature
Thermal lamination was performed at 80 ° C., a receiving roll temperature of 30 ° C., a pressure bonding pressure of 2 kg / cm ² , and a pressure bonding speed of 5 m / min to produce a bonding film of an elastomer film and a polyester film.

The obtained film was subjected to the same test as the peel test in "Adhesive strength" of Example 1,
When the polyester film and the elastomer film were peeled off, the polyester film was broken due to its high adhesive strength.

Example 9 Ethylene-Prompylene-Diene Copolymer Rubber (EPDM,
Vistalon 3708, manufactured by Exxon Chemical Co., Ltd., 60% by weight,
40% by weight of ethylene-vinyl acetate copolymer (EVA, DQDJ-3269, manufactured by Nippon Unicar Co., Ltd.) and a total of 85 parts by weight of low melting point polyester (manufactured by Toyobo Co., Ltd., Byron GM900, melting point) The composition obtained by adding 15 parts by weight of the mixture is melt-kneaded by an extruder, and then melt-kneaded by a T-die method.
An elastomer film of 0 μm was obtained.

A sheet of this film and an aluminum foil (thickness: 9 μm) were placed on the upper and lower press plates using a heat press machine.
It was pressed at 0 ° C. under a pressure of 2 kg / cm ² for 10 seconds to produce a bonding film of an elastomer film and an aluminum foil.

A test similar to the peel test in "Adhesive strength" of Example 1 was performed on the obtained film,
When the peeling of the aluminum foil and the elastomer film was attempted, the aluminum foil was broken due to its high adhesive strength.

[0074]

The elastomer composition of the present invention contains an ethylene-propylene-diene copolymer rubber, an ethylene-vinyl acetate copolymer, and a low melting point polyester. An elastomer film formed from such an elastomer composition exhibits good adhesion to various plastic films, metal foils, papers, fibrous base materials and the like. Further, the above-mentioned elastomer film and cotton, polyester, woven cloth made of various materials such as cupra, a composite film of the present invention made of a non-woven fabric or knitted cloth has good air permeability, and an elastomer film, a woven cloth, Adhesiveness with non-woven fabric or knitted fabric is good, and washing resistance is greatly improved.

Such an elastomer composition of the present invention is suitable as a composite material with various materials such as various plastics, metals and papers.

Further, the elastomer film of the present invention,
The composite film with a woven cloth, a non-woven cloth or a knitted cloth is suitable for clothing, sanitary goods, medical equipment, food related fields and the like.

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Claims (3)

[Claims] 1. An (a) ethylene-propylene-diene copolymer rubber (35-65% by weight), (b) an ethylene-vinyl acetate copolymer (25-60% by weight), and (c) a melting point of 110-180 ° C. 5 to 40% by weight of a polyester having a thermoplastic elastomer composition. 2. An (a) ethylene-propylene-diene copolymer rubber (35-65% by weight), (b) an ethylene-vinyl acetate copolymer (25-60% by weight), and (c) a melting point of 110-180 ° C. An elastomer film formed from a thermoplastic elastomer composition containing 5 to 40% by weight of a polyester having 3. An (a) ethylene-propylene-diene copolymer rubber (35-65% by weight), (b) an ethylene-vinyl acetate copolymer (25-60% by weight), and (c) a melting point of 110-180 ° C. A composite film obtained by laminating a film formed from a thermoplastic elastomer composition containing 5 to 40% by weight of a polyester having the above and a woven cloth, a non-woven cloth or a knitted cloth.