JP2002225173A - Composite film - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a composite film having high lamination strength between respective layers and between the respective layers and a sealant layer and excellent in gas barrier properties and antistatic properties. SOLUTION: In a co-extrusion laminated film consisting of an antistatic agent-containing layer (A) and an antistatic agent-free layer (B), an anchor coat layer and an inorganic matter vapor deposition layer are successively formed on the surface of the antistatic agent-free layer (B).

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a composite film, and more particularly to a composite film having excellent antistatic properties and gas barrier.

[0002]

2. Description of the Related Art A vapor deposition film is made by selecting an inorganic substance such as a metal or a metal oxide to be vapor-deposited. Since properties such as conductivity and magnetic recording properties can be changed in various ways, they are used for various applications. For example, it is used as a packaging material, a decoration material, a window glass blocking material, a gold / silver thread material, a capacitor material, a display material, a wiring board material, a magnetic recording material, and the like. As one of such uses, an antistatic agent is usually used in a packaging material of a package that dislikes static electricity such as electronic parts and powder.

On the other hand, conventionally, in order to prevent a decrease in gas barrier properties and adhesion, between a base film of a vapor deposition film and a vapor deposition layer, various polyurethane resins, various polyester resins, various acrylic resins, and mixtures thereof are used. There have been proposed many methods for providing a coating layer (anchor coat layer).

[0004]

However, when vapor deposition is performed on a film surface containing an antistatic agent, there is a problem that properties such as gas barrier properties and adhesion are reduced as a deposited film due to the influence of the antistatic agent. For a powdery substance that deteriorates due to moisture absorption or a reaction of oxygen, a packaging material that does not adhere due to gas barrier properties and static electricity is required. In addition, since electronic components may be destroyed by static electricity, an antistatic film having a highly reliable gas barrier property for packaging these components is required.

[0005]

Means for Solving the Problems The present invention has been completed as a result of intensive studies on the film structure in order to solve the above-mentioned problems. The gist of the present invention is that the antistatic agent-containing layer (A) A layer (B) containing no antistatic agent in a co-extruded laminated film comprising
A composite film characterized in that an anchor coat layer and an inorganic vapor-deposited layer are sequentially formed on the surface of the composite film.

[0006]

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, the present invention will be described in detail.
The composite film of the present invention uses, as a base film, a co-extruded laminated film comprising an antistatic agent-containing layer (A) and an antistatic agent-free layer (B).

[0007] The raw material for the base film is not particularly limited as long as it is a resin raw material generally used for films. Polyethylene terephthalate, polyethylene naphthalate, polybutylene terephthalate, polyethylene-2,6- Polyester resins such as naphthalate; polyolefin resins such as homopolymers or copolymers such as ethylene, propylene and butene; polyamide resins such as nylon 6, nylon 66, nylon 12, and copolymer nylon; polyvinyl alcohol; Vinyl alcohol resins such as vinyl alcohol copolymers, polyimide resins, polyetherimide resins, polysulfone resins, polyethersulfone resins, polyetherketone resins, polycarbonate resins, polyvinylbutyral resins, and the like. Such as a mixture of copolymers can be used.

The antistatic agent used in the present invention includes cationic amines such as primary amine salts, tertiary amines and quaternary ammonium compounds, sulfurized oils, sulfated amide oils, sulfated oils, and the like. Anionic oils such as ester oils, fatty alcohol sulfates, alkyl sulfates, fatty acid ethyl sulfonates, alkyl sulfonates, alkyl naphthalene sulfonates, alkyl benzene sulfonates, phosphate esters, and polyhydric alcohols Partial fatty acid ester, ethylene oxide adduct of fatty alcohol, ethylene oxide adduct of fatty amine or fatty acid amide, ethylene oxide adduct of alkyl phenol, ethylene oxide adduct of alkyl naphthol, polyethylene glycol, fatty acid of alkyl diethanolamine Those of a non-ionic, such as ester, carboxylic acid derivatives include those amphoteric such imidazoline derivatives.

In the present invention, as long as the effect is not impaired, as an additive other than the antistatic agent,
Known stabilizers, lubricants, crosslinking agents, coloring agents, ultraviolet absorbers, antibacterial agents and the like may be used.

In the production of a coextruded laminated film comprising an antistatic agent-containing layer (A) and an antistatic agent-free layer (B),
A known method for manufacturing a laminated film is applied. For example,
First, the above two types of raw materials are melt-molded by a co-extrusion method to obtain a laminated sheet. Specifically, each raw material is melted by at least two extruders, extruded from a flat die or an annular die, and then quenched to obtain a flat or annular laminated sheet. Next, the obtained laminated sheet is stretched.

The compounding amount of the antistatic agent in the antistatic agent-containing layer (A) is usually 0.1 to 5% by weight, preferably 0.1 to 3% by weight. When the amount of the antistatic agent is too small, a sufficient antistatic function is not exhibited, and when it is too large, the optical properties of the film may be deteriorated. Also,
The ratio of layer (A) / layer (B) is usually 1/9 to 9/1, preferably 1/9 to 1/1. The constituent resin of each layer may be the same or different.

As the above stretching method, a tenter is usually used.
Sequential biaxial stretching method, tenter simultaneous biaxial stretching method,
Biaxial stretching methods such as blur type simultaneous biaxial stretching method are adopted
You. Stretching ratio depends on mechanical strength and gas barrier properties.
From the point, the vertical axis direction (sheet flow direction) and horizontal axis direction
(Perpendicular to the sheet flow direction)
Usually it is 2.5 to 10 times. Co-extrusion laminated film thickness
Is usually 5 to 500 μm, preferably 10 to 100 μm
Is selected from the range. Further, an antistatic agent-containing layer (A)
The specific surface resistance of the side surface is usually 10¹³Ω / □ or less, preferred
Or 10⁹-10^{1 Two}Ω / □.

[0013] The composite film of the present invention comprises an anchor coating layer and an inorganic vapor-deposited layer sequentially formed on the surface of the antistatic agent-free layer (B) of the base film having the above-mentioned structure. Features.

As the material of the anchor coat layer, a solvent and / or water soluble polyester resin, isocyanate resin, urethane resin, acrylic resin, ethylene vinyl alcohol resin, vinyl modified resin, epoxy resin,
One or more of an oxazoline group-containing resin, a modified styrene resin, a modified silicon resin, an alkyl titanate and the like are used. These can be used in combination with other curing agents and coupling agents.

The coating solution for forming the anchor coat layer may be used as a crosslinking agent, for example, epoxy or methylol, to improve the anchoring property (blocking property), water resistance, solvent resistance and mechanical strength of the anchor coat layer. Or alkylolated urea-based, melamine-based, guanamine-based, acrylamide-based, polyamide-based compounds, aziridine compounds, blocked polyisocyanate compounds, silane coupling agents, titanium coupling agents, zircoaluminate coupling agents, A small amount of an oxide, a photoreactive vinyl compound, a photosensitive resin, or the like may be contained as long as the adhesiveness is not deteriorated.

Further, the above-mentioned coating liquid is used as inorganic fine particles, for example, silica, silica sol, alumina, alumina sol, zirconium sol, kaolin, talc, calcium carbonate, titanium oxide, in order to improve the sticking property and the sliding property.
It may contain barium salt, carbon black, molybdenum sulfide, antimony oxide sol, and the like.

The method of applying the coating solution for forming the anchor coat layer may be either a method of applying the film at the time of forming the base film or a method of applying the film after forming the film. As a coating device, for example, a reverse roll coater, a gravure coater, a rod coater, an air doctor coater, or the like is used. In the case of applying the film in the biaxially stretched film forming process, it is preferable to apply the coating solution to the film stretched uniaxially in the longitudinal direction, stretch the film in a dry or undried state in the horizontal direction, and then perform a heat treatment. preferable. Such a method is advantageous in terms of manufacturing cost because film formation, coating and drying can be performed simultaneously.

The anchor coat layer is formed on the surface of the antistatic agent-free layer (B).
Can also be provided on the surface. When provided on both surfaces in this way, the composition of the anchor coat layer may be the same or different. In addition, in order to improve the applicability and adhesiveness of the base film, the surface of the film may be subjected to a chemical treatment, a discharge treatment or the like before the application.

The thickness of the anchor coat layer is usually 0.01
To 5 μm, preferably 0.02 to 1 μm. If the thickness is less than 0.01 μm, it tends to be difficult to obtain a uniform resin layer. If the thickness is more than 5 μm, the slipperiness tends to decrease and the film tends to be difficult to handle.

Aluminum, silicon, magnesium, palladium, aluminum, silicon, magnesium, palladium, and the like may be used as the material of the inorganic vapor deposition layer formed on the surface of the anchor coat layer on the side of the antistatic agent-free layer (B).
Examples include metals such as zinc, tin, nickel, silver, copper, gold, indium, stainless steel, chromium, and titanium, oxides of these metals, and mixtures thereof.

The thickness of the inorganic substance-deposited layer is appropriately selected depending on the final use of the composite film of the present invention.
It is in the range of 3000, preferably 100-2000. If the thickness of the inorganic substance vapor-deposited layer is too small, the moisture resistance is insufficient, and if it is too thick, the vapor-deposited layer may be cracked and peeled off.

The deposition method may be any known method such as a vacuum deposition method, a sputtering method, an ion plating method, and a plasma CVD method. For example, in the case of using a vacuum deposition method, silicon, silicon monoxide, silicon dioxide or a mixture thereof is used as an evaporating substance.
Under a vacuum of ^-3 to 10 ^-5 Torr, the evaporation material is heated and evaporated by an electron beam, resistance heating, or high-frequency heating. Further, a reactive evaporation method performed while supplying oxygen gas can also be employed.

It is preferable to further provide a sealant layer on the surface of the inorganic vapor-deposited layer of the composite film configured as described above in order to expand the range of application as various packaging materials. The sealant layer may be directly laminated on the inorganic vapor deposition layer, or may be indirectly laminated by providing an adhesive layer on the surface of the inorganic vapor deposition layer.

Examples of the above-mentioned adhesive include urethane-based adhesives, acrylic-based adhesives, polyester-based adhesives and the like. Examples of the sealant include olefin-based resin films such as polyethylene, ethylene-vinyl acetate copolymer, polypropylene, and ethylene-based copolymer, and heat-sealing films such as ionomer resins.

The lamination of the sealant is performed by a known method such as a dry lamination method. Further, the aforementioned antistatic agent can be added to the sealant material. Peel strength between the inorganic vapor deposition layer and the sealant layer,
Usually 200 (g / 15 mm) or more, preferably 400
(G / 15 mm) or more, and the upper limit is usually 1,50.
0 (g / 15 mm).

The oxygen permeability of the composite film of the present invention constituted as described above is usually 5 (cc / m ² · day · at
m) or less, preferably 2 (cc / m ² · day · at)
m) or less, and the lower limit is usually 0.01 (cc / m ^2).
Day.atm). On the other hand, the moisture permeability is usually 5
(G / m ² · day) or less, preferably 2 (g / m ² · d)
ay) or less, and the lower limit is usually 0.01 (g / m ^2).
Day).

[0027]

EXAMPLES Hereinafter, the present invention will be described in more detail with reference to examples, but the present invention is not limited to the following examples unless it exceeds the gist thereof. The method of evaluating a film in the following examples is as follows.

(1) Oxygen permeability (cc / m ² · day ·
atm): According to ASTM-D3985, an oxygen permeability measuring device (“OX-TRAN1” manufactured by Modern Control Co., Ltd.)
00 ”), and the measurement was performed under the conditions of a temperature of 25 ° C. and a relative humidity of 80%.

(2) Water vapor transmission rate (g / m ² · day): Water vapor transmission rate measuring apparatus (“Perm” manufactured by Modern Control Co., Ltd.)
atran-W1 ") at a temperature of 40 ° C. and a relative humidity of 90%.

(3) Peel strength (g / 15 mm) between the inorganic vapor-deposited layer and the sealant layer: a composite film having a width of 15 m
m, and the edge was partially peeled off. A T-peel test was performed at a speed of 100 mm / min by a peel tester.

Example 1 As a raw material resin, polyethylene terephthalate (PET) having an intrinsic viscosity of 0.62 dl / g was used. In addition, sodium dodecylbenzenesulfonate was used as an antistatic agent.

First, P containing 1% by weight of an antistatic agent
ET and PET without an antistatic agent were charged into separate extruders, and the thickness ratio of each layer was 280 to 300 ° C. and the ratio was 1: 2.
The mixture was extruded from a two-layer die so as to be 1, and cast on a cooling drum while using an electrostatic adhesion method together to obtain a laminated sheet having a thickness of about 150 μm.

Next, the above laminated sheet was stretched 3.5 times in the longitudinal direction at 95 ° C., then stretched 3.5 times in the transverse direction at 110 ° C., and further heat-treated at 230 ° C. for 4 seconds to obtain a 12 μm thick sheet.
m of biaxially stretched laminated PET film was obtained. The surface resistivity of the antistatic agent-containing layer (A) was 10 ¹⁰ Ω / □. The surface specific resistance was measured under the conditions of a temperature of 23 ° C. and a humidity of 50% (the same applies hereinafter).

Next, an isocyanate compound ("Coronate L" manufactured by Nippon Polyurethane Co., Ltd.) and a saturated polyester ("Vylon 300" manufactured by Toyobo Co., Ltd.) are coated on the surface of the antistatic agent-free layer (B) of the laminated PET film. 1: 1
The resin for the anchor coat layer mixed at a weight ratio was applied by a gravure coating method to form an anchor coat layer having a thickness of 0.1 μm (value after drying).

Next, the above-mentioned laminated PET was placed in a vacuum evaporation apparatus.
The film is supplied, and under vacuum of 5 × 10 ⁻⁵ Torr, 10
A silicon oxide thin film layer having a thickness of 200 ° was formed by heating and depositing 99.9% purity silicon monoxide on the surface of the anchor coat layer by a kw electron beam heating method.

Next, a urethane-based adhesive (adhesives “AD-900” and “CAT-RT-85” manufactured by Toyo Morton Co., Ltd.) was applied to the surface of the above-mentioned anchor coat layer for 10:
1.5) and dried to a thickness of 4μ.
m of the adhesive layer was formed.

Next, a 50 μm-thick unstretched polyethylene (PE) film (“TUX-TCS” manufactured by Tokyo Cellophane) was laminated on the surface of the adhesive layer of the above-mentioned film to form a composite film. Thereafter, aging was performed at 40 ° C. for 4 days, and the samples were subjected to physical property measurement. Table 1 shows the results.

Example 2 In Example 1, the vapor deposition material was changed to aluminum having a purity of 99.99%, and oxygen gas was introduced at the time of vapor deposition.
^A composite film was obtained in the same manner as in Example 1 except that a thin film of aluminum oxide was formed under a vacuum of ^-4 Torr. Table 1 shows the evaluation results of the obtained composite films. The surface resistivity of the antistatic agent-containing layer (A) in the biaxially stretched laminated PET film was 10 ¹⁰ Ω / □.

Example 3 A laminated sheet having a thickness of about 150 μm was obtained in the same manner as in Example 1. Next, the obtained laminated sheet was stretched 3.5 times in the longitudinal direction at 95 ° C., and then the aqueous acrylic resin 20 prepared by the method described later was applied to the surface of the antistatic agent-free layer (B).
A water-based polyester resin (“Polyester WR-961” manufactured by Nippon Synthetic Chemical Industry Co., Ltd.) 20% by weight, and a coating solution for an anchor coat layer having a composition of 60% by weight of water were applied. The film was stretched 3.5 times and heat-treated at 230 ° C. to obtain a biaxially stretched laminated PET film having a film thickness of 12 μm and an anchor coat layer thickness of 0.1 μm.

After that, in the same manner as in Example 1, vapor deposition of silicon monoxide, application of a urethane-based adhesive, and lamination of an unstretched PP film were performed to obtain a composite film. Table 1 shows the evaluation results of the obtained composite films. The surface resistivity of the antistatic agent-containing layer (A) in the biaxially stretched laminated PET film was 10 ¹⁰ Ω / □.

The above-mentioned aqueous acrylic resin is prepared by mixing 60 parts by weight of a xazoline group-containing polymer ("Epocross WS-500" manufactured by Nippon Shokubai Co., Ltd.) in ethyl alcohol, 40 parts by weight of ethyl acrylate, 30 parts by weight of methyl methacrylate, and methacrylic acid. 20 parts by weight of acid, glycidyl methacrylate 10
After solution polymerization of the mixture of parts by weight, the mixture was heated while adding water to remove ethyl alcohol, and the pH was adjusted to 7.5 with aqueous ammonia.
Prepared.

Example 4 PET (for layer A) containing 1% by weight of an antistatic agent (sodium dodecylbenzenesulfonate) and PET without antistatic agent (for layer B) obtained in Example 1 Recycled PET (for layer C), which is obtained by melting and collecting the laminated sheet, is put into a separate extruder, and each layer thickness ratio is 1: 1 at 280 to 300 ° C. in an A / C / B configuration. : 1 to be 3
The laminate sheet was extruded from a layer die and cast on a cooling drum while using the electrostatic adhesion method together to obtain a laminated sheet having a thickness of about 150 μm.

Next, the above laminated sheet was stretched and heat-treated in the same manner as in Example 1 to obtain a biaxially stretched laminated PET film having a thickness of 12 μm. The surface resistivity of the antistatic agent-containing layer (A) was 10 ¹⁰ Ω / □.

Next, in the same manner as in Example 1, an anchor coat layer was formed, silicon monoxide was deposited, a urethane-based adhesive was applied, and an unstretched PP film was laminated to obtain a composite film. Table 1 shows the evaluation results of the obtained composite films.

Example 5 Nylon (NY) was used as a raw material resin. In addition, sodium dodecylbenzenesulfonate was used as an antistatic agent.

First, N containing 1% by weight of an antistatic agent
Y and NY without an antistatic agent are put into separate extruders, and extruded from a two-layer die at 280 ° C. so that the thickness ratio of each layer becomes 1: 1; While casting, it was cast on a cooling drum to obtain a laminated sheet having a thickness of about 150 μm.

Next, the above-mentioned laminated sheet was stretched 3.0 times in the longitudinal direction at 50 ° C., stretched 3.0 times in the transverse direction at 80 ° C., and further heat-treated at 130 ° C. for 2 seconds to have a thickness of 15 μm.
A biaxially stretched laminated NY film (thickness ratio of each layer was 1: 1) was obtained. The surface resistivity of the antistatic agent-containing layer (A) is 10 ¹⁰
Ω / □.

Next, in the same manner as in Example 1, an anchor coat layer was formed, silicon monoxide was deposited, a urethane-based adhesive was applied, and an unstretched PP film was laminated to obtain a composite film. Table 1 shows the evaluation results of the obtained composite films.

Example 6 Polypropylene (PP) having an MFR of 2.3 g / 10 min was used as a raw material resin. In addition, sodium dodecylbenzenesulfonate was used as an antistatic agent.

First, P containing 1% by weight of an antistatic agent
P and PP not containing an antistatic agent are put into separate extruders, and extruded from a two-layer die at 210 ° C. so that the thickness ratio of each layer becomes 1: 3, and an electrostatic adhesion method is used in combination. While casting, it was cast on a cooling drum to obtain a laminated sheet having a thickness of about 150 μm.

Next, the above-mentioned laminated sheet was stretched 5.0 times in the longitudinal direction at 130 ° C., and then stretched in the transverse direction at 1650 ° C.
It is stretched 0.0 times, and further heat-treated at 160 ° C. for 4 seconds, and is biaxial with a thickness of 20 μm (thickness ratio of antistatic agent-containing layer (A) to antistatic agent-free layer (B) 1: 3) A stretched laminated PP film was obtained. The surface resistivity of the antistatic agent-containing layer (A) is 1
0 ¹¹ Ω / □.

Next, in the same manner as in Example 1, an anchor coat layer was formed, silicon monoxide was deposited, a urethane-based adhesive was applied, and an unstretched PP film was laminated to obtain a composite film. Table 1 shows the evaluation results of the obtained composite films.

Comparative Example 1 In Example 1, P containing 1% by weight of an antistatic agent was used.
Only ET was put into an extruder, extruded from a single-layer die at 280 to 300 ° C., and cast on a cooling drum while using an electrostatic adhesion method to obtain a single-layer sheet having a thickness of about 150 μm. The surface resistivity was 10 ¹⁰ Ω / □.

Next, in the same manner as in Example 1, stretching, heat treatment, formation of an anchor coat layer, deposition of silicon monoxide, application of a urethane adhesive, and lamination of an unstretched PP film were performed to obtain a composite film. Table 1 shows the evaluation results of the obtained composite films.

Comparative Example 2 In Example 5, N containing 1% by weight of an antistatic agent was used.
Only Y was put into an extruder, extruded from a one-layer die at 280 ° C., and cast on a cooling drum while using an electrostatic adhesion method to obtain a single-layer sheet having a thickness of about 150 μm. The surface resistivity was 10 ¹⁰ Ω / □.

Then, the film is stretched and heat-treated in the same manner as in Example 5. Further, as in Example 1, an anchor coat layer is formed, silicon monoxide is deposited, a urethane-based adhesive is applied, and an unstretched PP film is laminated. Was performed to obtain a composite film. Table 1 shows the evaluation results of the obtained composite films.

Comparative Example 3 In Example 6, P containing 1% by weight of an antistatic agent was used.
Only P is put into the extruder, and one layer die
From the cooling drum while using the electrostatic adhesion method together.
Then, a single layer sheet having a thickness of about 150 μm was obtained. surface
Specific resistance is 10 ¹¹Ω / □.

Then, the film is stretched and heat-treated in the same manner as in Example 6. Further, as in Example 1, an anchor coat layer is formed, silicon monoxide is deposited, a urethane-based adhesive is applied, and an unstretched PP film is laminated. Was performed to obtain a composite film. Table 1 shows the evaluation results of the obtained composite films.

Comparative Example 4 A composite film was obtained in the same manner as in Example 1, except that the formation of the anchor coat layer was omitted.
Table 1 shows the evaluation results of the obtained composite films.

Reference Example 1 In Example 1, only PET without an antistatic agent was charged into an extruder, extruded from a one-layer die at 280 to 300 ° C., and cast on a cooling drum while using an electrostatic adhesion method together. Thus, a single-layer sheet having a thickness of about 150 μm was obtained. The surface specific resistance was 10 ¹⁵ Ω / □.

Next, in the same manner as in Example 1, stretching, heat treatment, formation of an anchor coat layer, deposition of silicon monoxide, application of a urethane-based adhesive, and lamination of an unstretched PP film were performed to obtain a composite film. Table 1 shows the evaluation results of the obtained composite films.

It can be seen that, unlike the film of Comparative Example 1 containing the antistatic agent, the film containing no antistatic agent had good lamination strength, oxygen permeability and moisture permeability.

REFERENCE EXAMPLE 2 In the reference example 1, when the stretching was performed in the same manner as in Example 1, ie, after the longitudinal stretching of the laminated sheet and before the transverse stretching, a weight percent aqueous solution of sodium sulfonate as an anionic antistatic agent was used. Was applied, and a stretching, heat treatment, formation of an anchor coat layer, and deposition of silicon monoxide were performed in the same manner as in Example 1 except that an antistatic layer having a thickness of 0.05 μm was formed. Then, a urethane-based adhesive was applied and an unstretched PP film was laminated to obtain a composite film. Table 1 shows the evaluation results of the obtained composite films.

The antistatic layer of the film of Reference Example 2 had a surface specific resistance of 10 ¹⁰ Ω / □, but was reduced to 10 ¹⁴ Ω / □ by lightly rubbing 10 times with a waste cloth, and immersed in water for 1 minute. And then dried to further reduce to 10 ¹⁵ Ω / □. On the other hand, in the films of the above embodiments, since the antistatic agent was kneaded into the film, there was no such decrease in the surface resistivity.

[0065]

[Table 1]

[0066]

According to the present invention, there is provided a composite film having a high laminating strength between each layer and the sealant layer, and having excellent gas barrier properties and antistatic properties. Is very large.

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Shinji Dodozaki 1000 Higashikanamachi, Ushiku-shi, Ibaraki Pref. Mitsubishi Chemical Co., Ltd. Central Research Institute (72) Inventor Kenji Sugie 347 Inoguchi, Yamato-cho, Sakata-gun, Shiga Prefecture Mitsubishi Chemical Polyester Film Co., Ltd.F-term in Central Research Center (reference) BA10C BA10D CA22 EH20 EH202 EH46 EH462 EH66 EH66C EH662 EJ38 EJ382 GB08 GB15 GB41 JD02 JD03 JG04 JG04A JK06D JL12D JM02C YY00A YY00D

Claims (7)

[Claims] 1. A co-extruded laminated film comprising an antistatic agent-containing layer (A) and an antistatic agent-free layer (B),
A composite film comprising an antistatic agent-free layer (B) and an anchor coat layer and an inorganic vapor-deposited layer sequentially formed on the surface of the layer (B). 2. The composite film according to claim 1, wherein the content of the antistatic agent in the antistatic agent-containing layer (A) is 0.1 to 5.0% by weight. 3. The composite film according to claim 1, wherein the specific surface resistance of the surface on the antistatic agent-containing layer (A) side is 10 ¹³ Ω / □ or less. 4. A composite film according to claim 1, wherein a sealant layer is further provided on the surface of the inorganic vapor-deposited layer of the composite film according to claim 1. 5. The composite film according to claim 4, wherein an adhesive layer is provided between the inorganic vapor deposition layer and the sealant layer. 6. The composite film according to claim 4, wherein the peel strength between the inorganic vapor deposition layer and the sealant layer is 200 (g / 15 mm) or more. 7. An oxygen permeability of 5 (cc / m ² · day ·
The composite film according to any one of claims 1 to 6, wherein the moisture permeability is 5 (g / m ² · day) or less.