JP2662541B2 - Metallized plastic film - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention is a metallized plastic film. More specifically, while being a metal-deposited film with a polypropylene-based resin as the base film,
The present invention relates to a metal-deposited plastic film having high adhesion strength between a base film and a vapor-deposited film, excellent brightness and glossiness on a metal-deposited surface, excellent printability on a vapor-deposited surface, and excellent adhesion to other films.

[0002]

2. Description of the Related Art In recent years, metal-deposited plastic films obtained by vapor-depositing a metal on a plastic film under vacuum have been used because of their excellent decorative properties, gas barrier properties, light blocking properties, etc. Applications have been expanded to a wide range from materials of the type to packaging materials mainly for food. In particular, aluminum vapor-deposited plastic films are widely used mainly for packaging materials. In the case of packaging materials, in most cases, printing on the vapor-deposited surface (aluminum surface) or lamination with other films is used. . Incidentally, a polypropylene-based film (here, a polypropylene-based film includes, in addition to a propylene homopolymer, a copolymer of propylene as a main component with ethylene or another α-olefin) is a plastic film. As a major one, it is used in many fields. And, it has been used in a large amount as a metal-deposited polypropylene-based film in which metal is deposited on a polypropylene-based film. However, the metal-deposited polypropylene film has low adhesion strength between the base film and the deposition film, so-called deposition strength, and especially when the deposition metal is aluminum, the printability of the deposition surface and the adhesion to other films are extremely low, and the printing is difficult. However, it cannot be used for applications that require lamination or lamination, which has been a major obstacle in the development of applications. In addition, a film in which another film is laminated and adhered to the metal vapor-deposited surface may peel off at the interface of weak adhesion, which is either the interface between the base film and the vapor-deposited film or the interface between the vapor-deposited film and the laminated film, In order to obtain a film having excellent laminating properties, it is necessary to strengthen the adhesion at both interfaces. Metal-deposited low-density polyethylene-based plastic film with high deposition strength can be used to obtain a metal-deposited plastic film with a rough surface and low glossiness on the metal-deposited surface. Did not.

[0003] A metal-deposited plastic film using a polypropylene-based film has a low vapor deposition strength because the polypropylene-based resin does not have a polar group.
In addition, the cause of low printability and laminating property of the deposition surface is a neutralizing agent, slip agent,
An additive such as an antioxidant passes through the vapor deposition layer on the vapor deposition surface side and oozes to the surface, and further, when the additive oozes to the surface on the opposite surface side, the additive migrates to the vapor deposition surface when wound up. This causes the printability and laminating property of the surface to deteriorate (see JP-B-58-49574 and JP-A-59-25829). The latter is specifically described below. Among the additives, fatty acid derivatives used as neutralizing agents, in particular, higher fatty acid salts such as calcium stearate and sodium stearate, and higher fatty acids such as oleic amide, stearamide, and erucamide Amide has a content of 0.01% by weight
Even in the case of a very small amount before and after, the wetting index of the deposition surface (aluminum surface) is reduced to 33 dyn / cm or less, and printing or lamination adhesion to the deposition surface becomes impossible.

Conventionally, various proposals have been made to solve such problems. For example, as a method of increasing the deposition strength, a method of physically or chemically roughening the base film surface, a method of oxidizing the base film surface by corona discharge, gas flame, radiation irradiation, or the like, or providing a polar group, or There is known a method of coating the surface of a base film with an adhesive material. However, any of the methods for roughening or oxidizing the base film surface alone has insufficient vapor deposition strength, and the method for coating an adhesive material involves physically or chemically pre-coating the film surface prior to coating. There is a drawback in that it is necessary to perform the treatment, which complicates the process and increases the cost of the deposited film. In addition, as a method for improving the printability and laminating property of the vapor deposition surface together with the vapor deposition strength, a film obtained from a mixed polymer obtained by blending polypropylene with a grafted polypropylene obtained by graft polymerization of maleic anhydride or the like with polypropylene is used as a base film. Are also known (see JP-A-50-61469 and JP-B-58-49574). However, in this case as well, the cost of the film is high, and the unreacted maleic acid remaining in the film and the decomposed products generated by thermal decomposition have a strong odor, and when used for food packaging, the odor is transferred to the contents. There is.

[0005]

SUMMARY OF THE INVENTION The present inventors have solved the above-mentioned disadvantages of the prior art. Even if a polypropylene-based resin is used for a base film, the adhesion strength of a vapor-deposited film is high, and the luminance and brightness of a metal-deposited surface are reduced. Various studies were conducted to obtain a metal-deposited plastic film having excellent glossiness and excellent printability and lamination properties on the metal-deposited surface. As a result, a metal based on a plastic film obtained from a composition obtained by mixing a specific amorphous ethylene-propylene copolymer with a polypropylene resin or a composition obtained by further mixing a specific polyethylene resin with the composition is used as a base film. The inventors have found that a vapor-deposited plastic film can solve the above problems, and have completed the present invention based on this finding. As is clear from the above description, the object of the present invention is to increase the adhesive strength of the deposited film,
An object of the present invention is to provide a metal-deposited plastic film which is excellent in luminance and glossiness of a metal-deposited surface, and is also excellent in printability and laminating properties of the metal-deposited surface.

[0006]

The present invention provides the following (1) to
It has the configuration of (4). (1) A metal-deposited plastic film obtained by depositing a metal on a base film obtained by using a composition containing 2 to 20 parts by weight of an amorphous ethylene-propylene copolymer in 100 parts by weight of a polypropylene resin. (2) 2 to 20 parts by weight of an amorphous ethylene-propylene copolymer and 100 parts by weight of a polypropylene-based resin and a polyethylene-based resin 1 having a density of 0.930 g / cm ³ or more.
A metal-deposited plastic film obtained by depositing a metal on a base film obtained using a composition containing from 10 to 10 parts by weight. (3) The ratio of the melt flow rate (MFR-PP) of the polypropylene resin to the melt flow rate (MFR-PE) of the polyethylene resin satisfies the following relationship: 0.5 ≦ MFR-PE / MFR-PP The metal-deposited plastic film according to (2), wherein a polypropylene resin and a polyethylene resin are used. (4) The amorphous ethylene-propylene copolymer has an ethylene content of 50% by weight or more and has a Mooney viscosity of ML.
_{1 + 4} (100 ° C.) The metal-deposited plastic film according to any one of (1), (2) and (3), which is 90 or less.

Hereinafter, the present invention will be described in detail. The present invention relates to a resin composition comprising 100 parts by weight of a polypropylene resin and 2 to 20 parts by weight of an amorphous ethylene-propylene copolymer, or 100 parts by weight of a polypropylene resin and 2 to 20 parts by weight of an amorphous ethylene-propylene copolymer. It is a metal-deposited plastic film obtained by depositing metal on a plastic film obtained from a resin composition comprising 20 parts by weight and a specific polyethylene resin of 1 to 10 parts by weight. The deposited film is usually on only one side, but may be formed on both sides depending on the application. Further, the present invention also includes a metal-deposited plastic film obtained by metal-depositing the above resin composition on a base film in which a plurality of films are laminated as an outermost layer. The polypropylene resin used in the present invention is mainly composed of an ethylene-propylene-butene-1 terpolymer, a crystalline propylene homopolymer, an α-olefin containing 80% by weight or more of a propylene component, and May be mixed. The ethylene-propylene-butene-1 terpolymer contains a propylene component of 80 to 98% by weight and has a crystal melting point (Tm) of 115 to 115.
A crystalline copolymer in the range of 150 ° C. is preferred, and the content ratio of ethylene: butene-1 is preferably from 10: 1 to 1:15. A film obtained from a composition obtained by mixing a polypropylene resin containing ethylene-propylene-butene-1 terpolymer as a main component has excellent adhesiveness to a vapor-deposited film, and has excellent impact resistance and heat sealability. Is also excellent.
The copolymer can be produced by a known polymerization method. For example, it can be obtained by polymerizing each monomer in the presence of a Ziegler-Natta type catalyst. Here, the crystal melting point (hereinafter abbreviated as Tm) refers to a melting point of 10 mg in a nitrogen atmosphere using a scanning differential calorimeter.
Means the peak temperature of an endothermic curve obtained by measuring the endothermic amount accompanying the melting of the crystal at a heating rate of 10 ° C./min. In the case of a crystalline copolymer containing propylene as a main component,
As the content of ethylene or α-olefin in the comonomer component increases, Tm decreases. For example, crystalline ethylene
In the case of a propylene random copolymer, the ethylene content slightly varies depending on the randomness of the copolymer,
If it exceeds 2.5% by weight, the temperature will be 150 ° C. or lower. In addition, a polymer having a plurality of Tm may be obtained by performing polymerization in two or more stages by changing the polymerization conditions in a multi-stage polymerization,
In the present invention, the temperature of the main peak is defined as the crystal melting point.

The non-crystalline ethylene-propylene copolymer used in the present invention has an ethylene content of 50% by weight or more,
Preferably, the Mooney viscosity measured according to JIS K 6300 is ML _{1 + 4} (100 ° C.) 90 or less. Non-crystalline ethylene-propylene copolymer, for example,
Using a catalyst formed from (a) a complex containing at least magnesium, titanium and halogen, (b) an organometallic compound of a metal belonging to Groups 1 to 3 of the periodic table, and (c) an electron donor. , By random copolymerization of ethylene and propylene. The ethylene content of the non-crystalline ethylene-propylene copolymer used in the present invention is preferably 50% by weight or more, because the ethylene content of less than 50% by weight is not effective in improving the laminability of the metallized film. May be sufficient. Mooney viscosity ML ₁ + 4 is preferably (100 ° C.) 90 or less, because it is the Mooney viscosity ML ₁ + 4 (100
C.) exceeds 90, the compatibility with the polypropylene resin is deteriorated, and the transparency of the film using the obtained composition may be remarkably deteriorated. The mixing ratio of the non-crystalline ethylene-propylene copolymer used in the present invention is 2 to 20 parts by weight based on 100 parts by weight of the propylene resin. The reason for limiting the compounding amount is that if less than 2 parts by weight, the effect of improving the laminating property is not seen, and if it exceeds 20 parts by weight, the adhesiveness of the film itself increases and the film forming property is extremely reduced. . If the amount exceeds 20 parts by weight, the roll appearance of the film is poor, and it is difficult to obtain a uniform vapor-deposited film.

The resin composition comprising the polypropylene resin of the present invention and a non-crystalline ethylene-propylene copolymer,
By adding a specific polyethylene resin, the vapor deposition strength, which is the subject of the present invention, is improved, a beautiful gloss is obtained, and the printability, laminating property, slip property and blocking resistance of the vapor deposited film are further improved. It is particularly effective because it can form a film excellent in quality. This polyethylene resin has a density of 0.930 g / cm ³ or more, and the compounding amount is in the range of 1 to 10 parts by weight based on 100 parts by weight of the propylene resin. In order to obtain a vapor-deposited film having excellent metallic luster, the ratio of the melt flow rate (MFR-PP) of the polypropylene resin to the melt flow rate (MFR-PE) of the polyethylene resin is 0.5 ≦ MFR-PE. / MFR-PP is particularly desirable. Here, the melt flow rate is based on JIS K 7210, and polypropylene-based resin (MFR-PP) is tested under test condition 14 (230 ° C, 2.16 kgf), and polyethylene-based resin (MFR-PE) is tested under test condition 4 (190 ° C). , 2.1
6 kgf) (unit: g / 10 min). The density of the polyethylene resin used in the present invention is 0.9
The reason for limiting to 30 g / cm ³ or more is that the density is 0.93
If the amount is less than 0 g / cm ³ , no effect of improving the slip property and the blocking resistance of the obtained film is obtained. The reason why the blending amount of the polyethylene resin used in the present invention is limited to 1 to 10 parts by weight with respect to 100 parts by weight of the propylene resin is that when the blending amount is less than 1 part by weight, the slip property and blocking resistance of the obtained film are reduced. No improvement effect is observed, and if it exceeds 10 parts by weight, the gloss of the deposited film deteriorates. Here, the polyethylene resin is
It is an ethylene homopolymer or a copolymer of ethylene and a small amount of polypropylene, butene-1, or hexene-1, or a mixture thereof. Among them, high-density polyethylene or linear low-density polyethylene is particularly preferable.

The resin composition used in the present invention may contain an antioxidant, an inorganic filler, a lubricant, an anti-blocking agent, and the like, if necessary, as long as the object of the present invention is not impaired. Fatty acids and derivatives containing fatty acid-forming groups, etc., reduce the adhesion of the deposited film, the printability of the deposited surface, and the laminability of the deposited film. As the antioxidant, phosphorus-based and phenol-based ones having a molecular weight of 500 or more are particularly desirable. Specifically, tetrakis- [methylene-3- (3 ′, 5′-di-tert-butyl-4′-hydroxyphenyl) propionate] methane, 1,3,3
5-trimethyl-2,4,6, -tris (3,5-di-
t-butyl-4-hydroxybenzyl) benzene, 1,
3,5-tris (4-t-butyl-3-hydroxy-
2,6-dimethylbenzyl) isocyanurate, 6-
[4-hydroxy-3,5-di-t-butylamino)-
2,4-bis-n-octylthio-1,3,5-triazine, 1,1,3-tris (2-methyl-4-hydroxy-5-t-butylphenyl) butane, tris (3,5
-Di-t-butyl-4-hydroxyphenyl) isocyanurate, tetrakis (2,4-di-t-butylphenyl) 4,4'-biphenylene-diphosphonite, and the like. Or two or more of them can be used in combination. The content is suitably from 0.03 to 0.30 parts by weight based on 100 parts by weight of the polypropylene resin. The inclusion of the above antioxidant is extremely effective for the stability of the composition at the time of film formation and at the time of use of the film.

As the inorganic filler, any of calcium carbonate, silica, clay, talc, hydrotalcite, zeolites and the like can be used. As a method for adding the above-mentioned additives to the polypropylene-based resin, any method may be used as long as it is uniformly dispersed, but it is mixed with a ribbon blender, a Henschel mixer (trade name) or the like, and the mixture is extruded with an extruder or the like. A method of melt-kneading is preferred.

The base film used in the present invention can be obtained from the above resin composition by an ordinary T-die method or an inflation method. Not only these uniaxially or biaxially stretched films but also unstretched films can be used as the base film. In addition, in the present invention, in addition to a single-layer plastic film, a resin film used in the present invention is used as a surface layer on one or both sides, and a composite film in which a plurality of films are laminated may be used as a base film. it can. When the resin composition used in the present invention is used only on one surface layer, a metal vapor-deposited film is metal-deposited on the side where the resin composition used in the present invention is used. A metal-deposited plastic film having a composite film as a base film has the same configuration as a metal-deposited plastic film in which a plurality of single-layer films are laminated on the opposite side of a vapor-deposited surface of a single-layer metal-deposited plastic film having metal deposited on one side.

Hereinafter, a case of a single-layer film will be described, but the same applies to a case of a composite film. The plastic film obtained from the resin composition can be subjected to metal vapor deposition as it is, but the surface of the film is wet by a corona discharge treatment in a special gas atmosphere such as nitrogen or oxygen or in air, or a flame treatment. You may use it, after improving adhesiveness and further improving adhesiveness. A general vacuum deposition method for performing metal deposition on a long plastic film (usually in a rolled form) is as follows. The degree of vacuum in a vacuum deposition apparatus provided with a roll winding film feeding section, a vapor deposition section, and a winding section is set to 10 ^-4 Torr or less, and a metal such as aluminum is heated in a container or in a filament form in this apparatus. It is common practice to dissolve and evaporate the metal and to continuously deposit and roll up the deposited molecules on the surface of the fed film. The method of using such a vacuum deposition apparatus is a batch type, and since it is necessary to improve productivity, one base film roll has recently become wide as 2 m or more in width and 10,000 to 20,000 m in length. It has a long length. Therefore, the demand for the high-speed vapor deposition property and the roll shape of the base film for vapor deposition is becoming more severe.

There are various evaporation methods other than the vacuum evaporation method.
For example, there are sputtering deposition and ion plating utilizing a phenomenon in which a metal constituting a cathode scatters when discharged in a vacuum. Aluminum is most commonly used as the metal to be deposited, but gold, silver, copper, nickel, chromium, germanium, selenium, titanium, tin, zinc, and the like can also be deposited. The thickness of the metal deposition layer is usually in the range of 50 to 800 angstroms, and it is possible to vapor-deposit not only on the entire surface, on one surface but also partially.
Further, the vapor deposition surface may be top-coated for coloring or protection.

[0015]

The present invention will be described in more detail with reference to the following examples and comparative examples, but the present invention is not limited to these examples. The methods for measuring physical properties and the evaluation criteria shown in the examples and comparative examples are as follows. (1) Haze A value (unit:%) obtained by measuring a film before vapor deposition according to ASTM D1003 is shown as haze. The smaller the value, the better the transparency and the appearance of the film. (2) Metallic luster: value obtained by measuring the vapor deposition surface of the vapor deposition film at a sensitivity of 1/20 according to ASTM D 523 (unit:%)
Is shown as glossiness. The larger this value is, the better the appearance of the deposited film surface is. The indication angle is measured at 20 degrees, and a gloss of 70% or more is regarded as good. (3) Wound appearance: A film roll obtained by continuously winding a vapor-deposited film of a predetermined length is visually observed, and there is no wrinkles or bumps, and there is no local distortion or habit when the film is drawn. The film was evaluated as ○ (good wound appearance), wrinkles and bumps, wrinkles remaining in the film when the film was pulled out, or distorted or hazy, and evaluated as × (poor winding appearance).

(4) Laminating property (peeling strength): A vapor-deposited surface of a film on which metal (aluminum) is vapor-deposited on one side and a biaxially stretched polypropylene film (# 20) are bonded together using an adhesive for dry lamination. After aging at 3 ° C. for 3 days to completely dry the adhesive, it was cut into 15 mm widths, and the 90 ° peel strength at the interface was measured with a tensile tester. When laminating the film on the metal deposition surface and trying to peel the laminated film, it peels at the weak adhesive interface of the interface between the base film and the deposited film or the interface between the deposited film and the laminated film,
When measured by this method, it was peeled off at the interface between the base film and the vapor-deposited film.
Means substantially the adhesive strength of the deposited film. A peel strength of 200 (g / 15 mm) or more was regarded as good. (5) Slip property (dynamic friction coefficient): ASTM D52
The slip property of the base film was indicated by the dynamic friction coefficient between the corona-treated surface and the non-treated surface of the base film measured by the method specified in No. 3. The smaller this value is, the better the slip property is. The slip property of the metal-deposited film can also be estimated from this measurement, and a dynamic friction coefficient of 1.00 or less was determined to be good.

Examples 1-7, Comparative Examples 1-3 Melt flow rate (MF) as polypropylene resin
100 parts by weight of a crystalline ethylene-propylene-butene-1 terpolymer having an R-PP of 6.0 and a Tm of 140 ° C. (2.5% by weight of ethylene and 4.5% by weight of butene-1) A non-crystalline ethylene-propylene copolymer having the ethylene content and Mooney viscosity described in Table 1 was blended in the blending amount (% by weight) shown in Table 1, and tetrakis- [methylene was used as an antioxidant. -3- (3 ', 5'-di-t
-Butyl-4'-hydroxyphenyl) propionate] methane (0.10 parts by weight) and aluminum silicate (0.20 parts by weight) as a blocking-resistant agent were added, and pelletized using an extruder. The obtained pellet is 65 mm in diameter.
Extruded at a melting temperature of 220 ° C. using a φ extruder and a T-die, quenched with an air chamber and a cooling roll having a surface temperature of 30 ° C. to form a plastic film, and immediately with a wetting index of 40 dyn / cm on one side of the film. Rolled to a thickness of 25
μ, a roll-shaped plastic film having a width of 60 cm. After cutting this plastic film to a width of 50 cm using a slitter, the film was set as a base film in a continuous vacuum deposition apparatus, and the film was continuously unwound and a vacuum of 5 × 10 ^-5 Torr was applied to the corona-treated surface of the film. Then, aluminum was vapor-deposited and wound up to obtain a single-sided aluminum-deposited plastic film having a thickness of about 350 Å (within ± 15 Å) in the form of a roll having a length of 2,000 m. Table 1 shows the properties of the base film and the metallized film.

Comparative Examples 17 to 19, Comparative Examples 4 to 6 In Example 1, a crystalline ethylene-propylene copolymer (containing ethylene) instead of the crystalline ethylene-propylene-butene-1 terpolymer was used as the polypropylene resin. 2.5% by weight, MFR-PP 7, Tm 150 ° C)
Example 2 was prepared in the same manner as in Example 1 except that the non-crystalline ethylene-propylene copolymer having the ethylene content and Mooney viscosity described in Table 2 was blended at the blending amount (% by weight) shown in Table 2. Similarly, a roll-shaped metal-deposited plastic film in which aluminum was deposited on one side was obtained. Table 2 shows the properties of the base film and the metallized film.

Comparative Examples 20 to 21 and Comparative Examples 7 to 9 In Example 1, instead of the crystalline ethylene-propylene-butene-1 terpolymer as the polypropylene resin, a crystalline propylene homopolymer (MFR- PP
8, Tm 162 ° C.) and a non-crystalline ethylene having an ethylene content and a Mooney viscosity listed in Table 3.
A roll-shaped metal-deposited plastic film in which aluminum was deposited on one side was obtained in the same manner as in Example 1 except that the propylene copolymer was blended in the blending amount (% by weight) shown in Table 3. Table 3 shows the properties of the base film and the metallized film. As is clear from Tables 1 to 3, the base film and the metal-deposited film obtained from the resin composition specified in the present invention have excellent properties, but the film of the comparative example has significant properties. It turns out that it is inferior.

Examples 13 to 19, Comparative Examples 10 to 14 Melt flow rate (MF) was used as a polypropylene resin.
100 parts by weight of a crystalline ethylene-propylene-butene-1 terpolymer having an R-PP of 6.0 and a Tm of 140 ° C. (2.5% by weight of ethylene and 4.5% by weight of butene-1) In addition, tetrakis- [methylene-3-
(3 ', 5'-di-t-butyl-4'-hydroxyphenylpropionate) 0.10 parts by weight of methane and 0.02 parts by weight of aluminum silicate as a blocking inhibitor were added, and the mixture was pelletized using an extruder. Table 4 shows a non-crystalline ethylene-propylene copolymer having an ethylene content of 80% by weight and a Mooney viscosity shown in Table 4 with respect to 100 parts by weight of the pelletized polypropylene resin. And the MFR- listed in Table 4 as a polyethylene resin.
An ethylene-propylene copolymer having a PE (g / 10 min) and a density (g / 10 min) (propylene content: 0.3% by weight) is blended in the blending amount (% by weight) shown in Table 4 and the blender is blended. And dry blended. The obtained composition was extruded at a melting temperature of 220 ° C using an extruder having a diameter of 65 mmφ and a T-die, and rapidly cooled with an air chamber and a cooling roll having a surface temperature of 30 ° C to obtain a plastic film. Immediately one side of this film has a wetting index of 40d
The film was wound while being subjected to a corona discharge treatment so as to have a thickness of yn / cm to obtain a roll-shaped plastic film having a thickness of 25 μm and a width of 60 cm. After cutting this plastic film into a width of 50 cm using a slitter, the film was set as a base film in a continuous vacuum evaporation apparatus, and the film was continuously unwound and a vacuum of 5 × 10 ⁻⁵ Torr was applied to the corona-treated surface of the film. A metal-deposited plastic film having aluminum deposited on one side with a thickness of about 350 angstroms (within ± 15 angstroms) and a length of 2 mm.
It was obtained in the form of a 000 m roll. Tables 4 and 5 show the properties of the base film and the metallized film. As is clear from Table 5, the vapor-deposited film composed of the composition to which the polyethylene-based resin and the non-crystalline ethylene-propylene copolymer were added was excellent in all properties, but the vapor-deposited film of the comparative example was It can be seen that one of the characteristics is significantly inferior and not preferable. Regarding the printability of the metal-deposited surface of the metal-deposited plastic film obtained in the examples, all were good without any problem.

[0021]

[Table 1]

[0022]

[Table 2]

[0023]

[Table 3]

[0024]

[Table 4]

[0025]

[Table 5]

[0026]

The metal-deposited plastic film according to the present invention uses a non-crystalline ethylene-propylene copolymer or a non-crystalline By blending a specific amount of ethylene-propylene copolymer and polyethylene resin, the adhesion strength between the base film and the vapor-deposited film is strong, the vapor-deposited surface has a beautiful metallic luster, and the printability and lamination properties of the vapor-deposited surface Can be obtained. Thereby, it can be suitably used for applications such as packaging and decoration.

Claims (4)

(57) [Claims] An amorphous ethylene-propylene copolymer is added to 100 parts by weight of a polypropylene resin containing an ethylene-propylene-butene-1 terpolymer as a main component.
A metal-deposited plastic film obtained by depositing a metal on a base film obtained by using a composition containing parts by weight. 2. A non-crystalline ethylene-propylene copolymer of 2 to 20 parts by weight based on 100 parts by weight of a polypropylene resin containing an ethylene-propylene-butene-1 terpolymer as a main component.
A metal-deposited plastic film obtained by vapor-depositing a metal on a base film obtained by using a composition containing 1 to 10 parts by weight of a polyethylene resin having a weight part and a density of 0.930 g / cm ³ or more. 3. The ratio of the melt flow rate (MFR-PP) of a polypropylene-based resin to the melt flow rate (MFR-PE) of a polyethylene-based resin is expressed by the following equation: 0.5 ≦ MFR-PE / MFR-PP 3. The metal-deposited plastic film according to claim 2, wherein a satisfying polypropylene resin and polyethylene resin are used. 4. A non-crystalline ethylene-propylene copolymer having an ethylene content of 50% by weight or more and a Mooney viscosity of ML _{1 + 4} (100 ° C.) 90 or less. 4. The metal-deposited plastic film according to any one of 3.