JPH08217930A - Olefin polymer composition - Google Patents

Abstract

PURPOSE: To obtain an olefin polymer compsn. which is excellent in film-forming properties and gives a film excellent in appearance by compounding a crystalline propylene polymer with a specific amorphous ethylene-α-olefin copolymer. CONSTITUTION: This compsn. comprises 98-80 pts.wt. crystalline propylene polymer and 2-20 pts.wt. amorphous ethylene-α-olefin copolymer having a melt flow rate (230 deg.C: 2160g) of 15-70g/10min and is excellent in film-forming properties, giving a film excellent in appearance. The film can give a metallized film excellent in appearance, adhesive strength between the substrate film and the metal deposit, light-screening properties, and gas barrier properties. Both the film and the metallized film are suitable for packaging and decorating, esp. for food packaging.

Description

Detailed Description of the Invention

[0001]

FIELD OF THE INVENTION This invention relates to olefin polymer compositions and films. More specifically, an olefin polymer composition comprising a crystalline propylene polymer and an amorphous ethylene / α-olefin copolymer, which has an excellent film-forming property and has an excellent appearance, an excellent appearance, and a vapor deposition strength The present invention relates to a film capable of obtaining a metal vapor deposition film having excellent properties and a metal vapor deposition film having excellent appearance, vapor deposition strength, light blocking property, and gas barrier property.

[0002]

2. Description of the Related Art In recent years, a film using a composition in which a crystalline propylene polymer is mixed with an amorphous α-olefin copolymer and a metal vapor deposition film obtained by vapor-depositing a metal on the film under vacuum have been used. There is. For example, a polyolefin composed of 60 to 99% by weight of (A) polypropylene resin, and 1 to 40% by weight of polyolefin random copolymer (B) [the total amount of components (A) and (B) is 100% by weight]. A film, wherein the polyolefin random copolymer (B) has an ethylene content of (I) of 60.
~ 95 mol% and MFR ₂₃₀ ° C is 0.1-50 g /
An ethylene-based random copolymer 20-containing ethylene and an α-olefin having 3 to 20 carbon atoms for 10 minutes
95 parts by weight and (II) propylene having a propylene content of 60 to 95 mol% and an MFR ₂₃₀ ° C. of 0.1 to 50 g / 10 min and ethylene or an α-olefin having 4 to 20 carbon atoms. Vapor deposition of a propylene-based random copolymer of 5 to 80 parts by weight [the total amount of components (I) and (II) is 100 parts by weight] Polyolefin film. A metal is vapor-deposited on a base film obtained by using (JP-A-5-50556) or a composition in which 100 parts by weight of a polypropylene resin is mixed with 2 to 20 parts by weight of an amorphous ethylene-propylene-diene copolymer. Vapor-deposited plastic film (JP-A-6-287747) or a base film obtained by using a composition containing 100 parts by weight of a polypropylene resin and 2 to 20 parts by weight of an amorphous ethylene-propylene copolymer. Metal-deposited plastic film formed by vapor-depositing metal (Japanese Patent Laid-Open No. 6-287
No. 746) is known.

However, a polyolefin resin such as that disclosed in the embodiment of Japanese Patent Laid-Open No. 50556/1993 is added to MFR _230.
Fisheye (fisheye before retention) occurs in the film obtained by film formation with an extruder and a T-die using a composition in which a polyolefin random copolymer having a temperature of 0.5 to 6.7 g / 10 min is blended. However, there is a problem with the appearance. In particular, the film obtained by continuously forming the film, stopping the extruder once, and then forming the film again after several hours has many fish eyes (fish eyes after staying) and has a problem in appearance. Similarly, JP-A-6-287746 and JP-A-6-2
The Mooney viscosity is 10 to 98 ML _{1 + 4} (100 ° C.) in the polyolefin resin as shown in the example of Japanese Patent Publication No. 87747.
The film obtained by film-forming with an extruder and a T-die using a composition in which the amorphous ethylene-propylene-diene copolymer or the amorphous ethylene-propylene copolymer is mixed is a fish eye (fish before retention). Eye) occurs and the appearance remains a problem. In particular, after the film formation is continuously performed, the extruder is once stopped, and after several hours, the film is formed again, and a large number of fish eyes (fish eyes after retention) are generated, and a problem remains in the appearance. Of course, it goes without saying that a metal-deposited film obtained by vapor-depositing a metal on a film having a problem in appearance also has a problem in appearance. Furthermore, JP-A-5-
No. 50556, JP-A-6-287746 and JP-A-6-287747 do not describe the appearance, particularly the idea or example for preventing fisheye before and after retention. The Mooney viscosity of 10 to 98 ML _{1 + 4} (100 ° C.) shown above is measured by the melt flow rate (230 ° C .: 21.18).
When converted to N), it becomes 0.5 to 8 g / cm10 min.

Once the fish eyes before and after the retention occur, not only the appearance problem occurs, but also
Even if another composition is formed with the extruder and T-die used, a fish eye is generated in the obtained film, and in order to prevent the fish eye, a large amount of resin is used for several hours to remove the extruder and the T-die. There is also a problem that it is necessary to wash or disassemble and clean the extruder and the T-die, which requires a lot of time and labor and is extremely uneconomical. Accordingly, JP-A-5-50556 and JP-A-6-287746.
The techniques disclosed in Japanese Patent Laid-Open No. 6-287747 and Japanese Patent Laid-Open No. 6-287747 required improvement in appearance, particularly in fish eyes before and after retention.

[0005]

The present invention relates to olefin polymer compositions and films. More specifically, an olefin polymer composition comprising a crystalline propylene polymer and an amorphous ethylene / α-olefin copolymer, which has an excellent film-forming property and has an excellent appearance, an excellent appearance, and a vapor deposition strength (EN) It is intended to provide a film capable of obtaining a metal vapor deposition film excellent in heat resistance and a metal vapor deposition film having excellent appearance, vapor deposition strength, light blocking property and gas barrier property.

[0006]

The present invention relates to olefin polymer compositions and films. More specifically, an olefin polymer composition comprising a crystalline propylene polymer and an amorphous ethylene / α-olefin copolymer, which has an excellent film-forming property and has an excellent appearance, an excellent appearance, and a vapor deposition strength (EN) It is intended to provide a film capable of obtaining a metal vapor deposition film excellent in heat resistance and a metal vapor deposition film having excellent appearance, vapor deposition strength, light blocking property and gas barrier property.

[0007]

The present invention has the following constitution. (1) Crystalline propylene polymer [A] 98 to 80% by weight
And an olefin polymer composition [C] consisting of 2 to 20% by weight of an amorphous ethylene / α-olefin copolymer [B] having a melt flow rate (230 ° C .: 21.18N) of 15 to 70 g / 10 min. (2) The olefin polymer composition [C] described in the above item 1.
99 to 90% by weight and 1 of crystalline ethylene polymer [D]
An olefin polymer composition [E] comprising 10 to 10% by weight. (3) A film [F] comprising the olefin polymer composition described in the above item 1 or the olefin polymer composition described in the above item 2. (4) A metal-deposited film [G] obtained by metal-depositing the film according to the item 3 above.

A detailed description will be given below. The crystalline propylene polymer [A] used in the present invention is a crystalline propylene homopolymer or a crystalline propylene / α-olefin copolymer. Examples of the α-olefin include ethylene and 1-butene. Preferably, melt flow rate (hereinafter sometimes abbreviated as MFR) (230 ° C .; 21.
18N) is 2 to 20 g / 10 min, more preferably 5
-15 g / 10 min, particularly preferably 5-10 g / 1
0 min, and the density is preferably 0.89 to 0.90
g / cm ³ , and the crystal melting point is preferably 120 to 16
It is a propylene / ethylene copolymer or a propylene / ethylene / 1-butene copolymer at 0 ° C, more preferably 130 to 150 ° C, and particularly preferably 130 to 140 ° C. The method for producing the propylene / α-olefin copolymer is obtained by randomly copolymerizing propylene as a main component with an α-olefin such as ethylene or 1-butene. Of course, it may be an ethylene / propylene / 1-butene copolymer obtained by copolymerizing propylene, ethylene and 1-butene. The copolymerization can be exemplified by publicly known slurry polymerization or gas phase polymerization using a catalyst in which a coordination compound catalyst and a promoter of an organometallic compound such as an organoaluminum compound are combined.

Amorphous ethylene / α-used in the present invention
The olefin copolymer [B] means MFR (230 ° C .; 2
1.18 N) is 15 to 60 g / 10 min, preferably 20 to 70 g / 10 min, more preferably 30 to 70.
g / 10 min, particularly preferably 55-70 g / 10 m
It is an amorphous ethylene / α-olefin copolymer. MFR (230 ° C; 21.18N) is 15g / 10
A film using an olefin polymer composition composed of an amorphous ethylene / α-olefin copolymer having a greatly lower than min does not have an excellent appearance and is not suitable for the present invention. The ethylene content of the amorphous ethylene / α-olefin copolymer is preferably 95 to 40% by weight, more preferably 95 to 60%.
90% to 70% by weight is particularly preferable in terms of excellent vapor deposition strength of the metal vapor deposition film comprising the olefin polymer composition of the present invention. The method for producing the ethylene / α-olefin copolymer comprises ethylene as a main component and propylene,
Examples thereof include a method of copolymerizing with an α-olefin such as 1-butene or diene. Examples of the copolymerization include publicly known slurry polymerization or gas phase polymerization in the presence of a vanadium catalyst or a titanium catalyst.

Olefin polymer composition of the present invention [C]
Is a crystalline propylene polymer 98 to 80% by weight and MF
R (230 ° C; 21.18N) is 15 to 70g / 10m
in amorphous ethylene / α-olefin copolymer of 2 to
It is an olefin polymer composition consisting of 20% by weight. An olefin polymer composition having an amorphous ethylene / α-olefin copolymer significantly lower than 2% by weight does not have excellent vapor deposition strength of a metal vapor deposition film obtained, and an olefin polymer composition significantly exceeding 20% by weight is a film. It is not suitable for the present invention because the film-forming property during film formation is not excellent.

In the present invention, for the purpose of improving the film forming property during film formation, the olefin polymer composition [C] is 99 to 90% by weight.
Further, an olefin polymer composition [E] containing 1 to 10% by weight of a crystalline ethylene polymer [D] can be used. The crystalline ethylene polymer [D] used in the present invention is a crystalline ethylene homopolymer or crystalline ethylene.α.
-Olefin copolymer. The density of the crystalline ethylene copolymer is preferably 0.925 to 0.965.
g / cm ³ , more preferably 0.930 to 0.965 g
/ Cm ³ , and the MFR (190 ° C; 21.18N) is preferably 1 to 20 g / 10 min. The method for producing the crystalline ethylene copolymer comprises ethylene as a main component
It can be exemplified to randomly copolymerize with one or more α-olefins such as butene and 1-hexene.

The blending method of the olefin polymer composition [C] and the olefin polymer composition [E] used in the present invention is a mixer with a high-speed stirrer such as Henschel mixer (trade name), a ribbon blender and a tumbler mixer. The method of compounding with the usual compounding device can be illustrated. When melt-kneading is required, a method of pelletizing using an ordinary single-screw extruder or twin-screw extruder can be exemplified.

In the olefin polymer composition [C] and the olefin polymer composition [E] used in the present invention, if necessary, an antioxidant, an inorganic filler, a lubricant, an antiblocking agent, etc. may be used. It can be exemplified that the content is appropriately contained within a range that does not impair. The antioxidant has a molecular weight of 5
Phosphorus and phenolic antioxidants of 00 or more are preferred. Specifically, tetrakis- [methylene-3-
(3 ', 5'-Di-t-butyl-4'-hydroxyphenyl) propionate] methane, 1,3,5-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-bisnoctylthio-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 can be exemplified, and these can be used alone or in combination of two or more kinds. Can be illustrated. The compounding amount is 0.0 with respect to 100 parts by weight of the olefin polymer composition.
3 to 0.3 parts by weight can be exemplified. The compounding of the antioxidant is extremely effective for the stability of the composition during film formation and during use of the film. Examples of the inorganic filler include calcium carbonate, silica, clay, talc, hydrotalcite, zeolites and the like.

The film [F] of the present invention is an unstretched film and uniaxially and biaxially stretched films. As a method for producing the film, the above-mentioned composition can be obtained by a usual T-die method or an inflation method. Further, in the present invention, in addition to the single layer film as described above, a laminated film in which a plurality of films are laminated with the single layer film as a surface layer on one side or both sides can be exemplified.

The metal vapor deposition film [G] of the present invention is a metal vapor deposition film obtained by vapor depositing metal on the film [F] of the present invention. In the method for producing the metal vapor-deposited film, the film obtained from the composition can be directly subjected to metal vapor deposition, but surface treatment such as corona discharge treatment or flame treatment in air or under a special gas atmosphere such as nitrogen or oxygen. Therefore, the wettability of the film surface may be improved to further improve the adhesiveness before use. A generally known vacuum vapor deposition method for performing metal vapor deposition on a long film (usually a roll winding form) is as follows. The degree of vacuum in the vacuum vapor deposition equipment equipped with the roll-out film feeding part, vapor deposition part, and winding part is set to 10
^-4 Torr or less, and in this device, a desired metal such as aluminum is heated in a container or in a filament form to dissolve and evaporate the metal, and vapor deposition molecules are continuously vapor-deposited on the film surface and wound up. . Since the method using such a vacuum vapor deposition apparatus is a batch method and it is necessary to improve productivity, recently, one film roll has a width of 2 m or more and a length of 10,000 to 20,000 m, which is wide and long. Since the film is rolled in length, the requirements for high-speed vapor deposition property of the film for vapor deposition and winding shape are becoming more severe. Although the single layer film has been described above, the same applies to the case of a laminated film. There are various vapor deposition methods other than the vacuum vapor deposition method described above. For example, sputtering deposition and ion plating, which utilize the phenomenon that the metal that constitutes the cathode scatters when discharged in vacuum, can be shown. Aluminum is the most common metal to be deposited,
Examples thereof include gold, silver, copper, nickel, chromium, germanium, selenium, titanium, tin and zinc. The thickness of the metal vapor deposition layer is usually in the range of 50 to 800 angstroms, and partial vapor deposition is possible not only on the entire surface and one surface. Also, the vapor deposition surface can be top-coated for coloring and protection.

[0016]

EXAMPLES The present invention will be described in more detail with reference to Examples and Comparative Examples, but the present invention is not limited thereto. The methods for measuring the physical properties shown in Examples and Comparative Examples and the criteria for evaluation are as follows. (1) Number of fish eyes before retention (unit: ke / 500c
m ²⁾ extruded at a melt temperature 250 ° C. using a diameter 65mmφ extruder and T-die of the composition, and quenching with a cooling roll of the air chamber and the surface temperature of 30 ° C. into a film having a thickness of 30 [mu] m, in 500 cm ² of the film The number of fish eyes of 50 μm or more was visually quantified and evaluated as follows. The number of fish eyes before retention was used as an index of appearance.
I thought The evaluation results E, G, and N have the following meanings. E: Number of fish eyes 24/500 cm ² or less V: Number of fish eyes 25 to 30/500 cm ² G: Number of fish eyes 31 to 49/500 cm ² N: Number of fish eyes 50 or more / 500 cm ² (2) Number of fish eyes after retention (unit: ke / 500c
m ² ) After measuring the number of fish eyes before retention, stop the extruder and T die used, and once the temperature inside the extruder becomes 50 ° C or lower, raise the extruder and T die again to 250 ° C. After 2 hours, a film was formed in the same manner as above, and the film 10 minutes after the start of film formation had a film thickness of 500 cm ^2.
The number of fish eyes of 50 μm or more in the medium was visually quantified and evaluated as follows, and the number of fish eyes after retention was taken as one of the indexes of appearance. The evaluation results E, G, and N have the following meanings. E: Number of fish eyes 24/500 cm ² or less V: Number of fish eyes 25 to 30/500 cm ² G: Number of fish eyes 31 to 49/500 cm ² N: Number of fish eyes 50 or more / 500 cm ²

(3) Vapor deposition strength (unit: g / 15 mm) The biaxially stretched polypropylene film (# 20) and the vapor deposition surface of a metal (aluminum) vapor-deposited film on one side are bonded together using an adhesive for dry lamination. After aging at 40 ° C. for 2 days and the adhesive was completely dried and solidified, the 90 ° peel strength at the interface was measured by a tensile tester and used as an index of vapor deposition strength. (4) Film-forming property The compositions obtained in Examples and Comparative Examples were prepared with a diameter of 65 m.
Extruded at a melting temperature of 220 ° C. using an mφ extruder and a T-die, and rapidly cooled into a film with an air chamber and a cooling roll having a surface temperature of 30 ° C., so that one side of the film immediately has a wetting index of 40 dyn / cm. When the film was wound on a roll while being subjected to corona discharge treatment, the film wound on the roll was visually observed and evaluated as follows to be used as an index of film-forming property. The evaluation results E, G, and N have the following meanings. E: No wrinkles or lumps G: Slightly wrinkles are generated but there is no problem in practical use N: Wrinkles or lumps are continuously generated and practically difficult to commercialize

The details of the polymers used in Examples and Comparative Examples are described below. PP-1: ethylene content 3.1% by weight, butene-1
Content is 1.1% by weight, MFR (230 ° C; 21.18
N) is a crystalline ethylene / propylene / butene-1 copolymer having a crystal melting point of 137 ° C. and 7 g / 10 min. PP-2: 0.3 wt% ethylene content, MFR (2
30 ° C .; 21.18 N) is 7 g / 10 min, and the crystalline melting point is 158 ° C., a crystalline ethylene / propylene copolymer. PP-3: MFR (230 ° C; 21.18N) is 10 g
A crystalline propylene polymer having a crystal melting point of 162 ° C. for / 10 min. PP-4: ethylene content 2.5% by weight, MFR (2
30 ° C .; 21.18 N) is 6.5 g / 10 min, and the crystalline melting point is 147 ° C. A crystalline ethylene / propylene copolymer.

EPR-1: Propylene content 20% by weight, MFR (230 ° C .; 21.18N) 40 g / 10
Min amorphous ethylene / propylene copolymer. EPR-2: Propylene content 20% by weight, MFR
(230 ° C; 21.18N) 20 g / 10 min of an amorphous ethylene-propylene copolymer. EPR-3: Propylene content 20% by weight, MFR
(230 ° C; 21.18N) 60 g / 10 min of an amorphous ethylene-propylene copolymer. EPR-4: Propylene content 20% by weight, MFR
(230 ° C .; 21.18 N) 5 g / 10 min of an amorphous ethylene / propylene copolymer. EPR-5: Propylene content 30% by weight, MFR
(230 ° C; 21.18N) 40 g / 10 min of an amorphous ethylene / propylene copolymer. EPR-6: Propylene content 26% by weight, MFR
(230 ° C; 21.18N) 5.4 g / 10 min of an amorphous ethylene / propylene copolymer. EPR-7: 88 wt% propylene content, MFR
(230 ° C; 21.18N) 2.5 g / 10 min of an amorphous ethylene / propylene copolymer.

EPDM: Propylene content 40% by weight, ethylidene norbornene content 5% by weight, MFR
(230 ° C .; 21.18 N) 40 g / 10 min of an amorphous ethylene / propylene / ethylidene norbornene copolymer. EBR-1: butene-1 content 20% by weight, MFR
(230 ° C; 21.18N) 6.7 g / 10 min of an amorphous ethylene / butene-1 copolymer. EBR-2: Butene-1 content 35% by weight, crystal melting point 110 ° C., MFR (230 ° C .; 21.18 N) 6 g
/ 10 min crystalline ethylene / butene-1 copolymer. PE-1: Density 0.954 g / cm ³ , MFR (19
Crystalline ethylene polymer (high-density polyethylene) PE-2 of 0 ° C .; 21.18 N) of 7: density of 0.935 g / cm ³ , MFR (19
0 ° C .; 21.18 N) is 3 crystalline ethylene butene-
1 copolymer (linear low-density polyethylene)

Examples 1-10, Comparative Examples 1-2 PP-1, PP-2, PP-3, EPR-1, EPR-
2, EPR-3, EPR-4, EPR-5 and EPDM
As shown in Table 1 below, and 0.10 parts by weight of tetrakis- [methylene-3- (3 ', 5'-di-t-butyl-4'-hydroxyphenyl) propionate] methane as an antioxidant. Aluminum silicate as an anti-blocking agent was blended in a blending ratio of 0.20 part by weight, uniformly mixed by a Henschel mixer (trade name), and the resulting mixture was charged into an extruder, melt-kneaded, and then pelletized. It was made into the composition of the shape. The number of fish eyes before retention, the number of fish eyes after retention, and the film-forming property were evaluated for this composition, and the results are shown in Table 1. Further, the above composition was extruded at a melting temperature of 220 ° C. using an extruder having a diameter of 65 mm and a T-die, and an air chamber and a surface temperature of 3 were used.
A film was obtained by rapidly cooling it with a 0 ° C. cooling roll, and immediately winding it on one side while corona discharge treatment was applied so that the wetting index was 40 dyne / cm, and a thickness of 2 was obtained.
A roll-shaped film having a width of 5 μm and a width of 60 cm was formed. After this film was cut into a width of 50 cm using a slitter, this film was set in a continuous vacuum vapor deposition device, and while continuously feeding the film, aluminum was applied to the corona-treated surface of the film under a vacuum of 5 × 10 ⁻⁵ Torr. After vapor deposition and winding, a vapor-deposited film having a thickness of about 350 angstrom (within ± 15 angstrom) was vapor-deposited on one side of aluminum to obtain a metal-deposited film. The vapor deposition strength of this metal vapor deposition film was evaluated, and the results are shown in Table 1.

Examples 11 to 13 and Comparative Examples 9 to 11 PP-1, PP-4, EPR-1, EPR-6, EBR
-1, EBR-2, EPR-7, PE-1 and PE-2
As shown in Table 2 below, and 0.10 part by weight of tetrakis- [methylene-3- (3 ', 5'-di-t-butyl-4'-hydroxyphenyl) propionate] methane as an antioxidant. Aluminum silicate as an anti-blocking agent was blended in a blending ratio of 0.20 part by weight, uniformly mixed by a Henschel mixer (trade name), and the resulting mixture was charged into an extruder, melt-kneaded, and then pelletized. It was made into the composition of the shape. The number of fish eyes before retention, the number of fish eyes after retention, and the film-forming property were evaluated for this composition, and the results are shown in Table 2. Further, the above composition was extruded at a melting temperature of 220 ° C. using an extruder having a diameter of 65 mm and a T-die, and an air chamber and a surface temperature of 3 were used.
A film was obtained by rapidly cooling it with a 0 ° C. cooling roll and immediately winding it on one side while applying corona discharge treatment so that the wetting index was 40 dyn / cm.
A roll-shaped film having a thickness of 60 μm and a width of 60 cm was prepared. After cutting this film to a width of 50 cm using a slitter,
Set this film on a continuous vacuum evaporation system, and while continuously unwinding the film, apply 5 to the corona-treated surface of the film.
Aluminum was vapor-deposited and wound up under a vacuum of × 10 −5 Torr to obtain a metal vapor-deposited film on one side of which the vapor-deposited film had a thickness of about 350 Å (± 15 Å). The vapor deposition strength of this metal vapor deposition film was evaluated, and the results are shown in Table 2.

As is clear from Table 1, Table 2 and Table 3, Examples 1 to 13 are simultaneously excellent in the number of fish eyes before retention, the number of fish eyes after retention, film-forming property and vapor deposition strength. On the other hand, Comparative Example 1 is not excellent in vapor deposition strength, and Comparative Examples 2 to 8 are not suitable for the present invention because the number of fish eyes before retention and the number of fish eyes after retention are not excellent. It can be seen that the comparative films are significantly inferior in either property. Further, Examples 1 to 1
The metallized film obtained in No. 13 had good gloss and printability on the metallized surface and had no problems.

[0024]

INDUSTRIAL APPLICABILITY The olefin polymer composition of the present invention is excellent in film-forming property, and a film having an excellent appearance can be obtained. With this film, a metal vapor deposition film having excellent appearance, vapor deposition strength, light blocking property, and gas barrier property can be obtained. This film and the metal vapor-deposited film can be suitably used for packaging and decoration applications, especially food packaging applications.

[0025]

[Table 1]

[0026]

[Table 2]

Continuation of front page (51) Int.Cl. ⁶ Identification code Office reference number FI technical display area C08L 23:08 23:06)

Claims (4)

[Claims] 1. A crystalline propylene polymer [A] 98-80.
% By weight and melt flow rate (230 ° C .: 21.18
N) 15-70g / 10min amorphous ethylene / α
An olefin polymer composition [C] comprising 2 to 20% by weight of the olefin copolymer [B]. 2. An olefin polymer composition [E] comprising 99 to 90% by weight of the olefin polymer composition [C] according to claim 1 and 1 to 10% by weight of a crystalline ethylene polymer [D]. 3. A film [F] comprising the olefin polymer composition according to claim 1 or the olefin polymer composition according to claim 2. 4. A metal vapor deposition film [G] obtained by metal vapor deposition on the film according to claim 3.