JPH01133731A - Metallized laminated body - Google Patents

Abstract

PURPOSE:To contrive improvements in blocking resistance and lubricity, by a method wherein a layer A comprised of a crystalline specific series copolymer and a layer B obtained by adding a specific quantity of an organic curing resin spherical fine powdery body to a crystalline propylene series random copolymer whose melting point is lower than that of a main ingredient used for the layer A are laminated together and the surface of the layer A is metallized. CONSTITUTION:A layer A comprised of a crystalline propylene series copolymer mainly comprised of crystalline polypropylene or propylene and a layer B comprised of a composition obtained by adding 0.01-2.0pts.wt. organic curing resin spherical fine powdery body to 100pts.wt. crystalline propylene series random copolymer having the melting point lower by 5 deg.C or higher than that of the polypropylene or copolymer used for the layer A are laminated together through a coextrusion method. Then a metal such as Al is vapor deposited to the surface of the layer A of a laminate to be obtained. It is preferable that above-mentioned layer A is made a mixture of the 97-30wt.% crystalline polypropylene or the crystalline propylene random copolymer whose crystalline melting point is 145 deg.C or higher or their mixture and 3-70wt.% crystalline ethylene/propylene copolymer and blocking resistance and adhesion of vapor deposited coating are improved.

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial Field of Application) The present invention relates to a metal vapor deposited laminate. For more details,
The present invention relates to a metal vapor-deposited laminate having extremely little deterioration of the metal vapor-deposited layer on one side of a two-layer film or sheet and having excellent anti-blocking properties and slipperiness.

(Prior art and its problems) Metal-deposited films or metal-deposited sheets, which are made by depositing metals on various plastic films or sheets under vacuum, can be used to make use of their excellent decorative properties, gas barrier properties, light blocking properties, etc. It has been widely used in gold and silver thread, building materials, packaging materials, etc., and aluminum vapor-deposited films in particular have come to be used in large quantities mainly for packaging.

In addition, crystalline copolymers with ethylene or α-olefin containing propylene as a main component, such as crystalline ethylene/
Crystalline propylene random copolymers such as propylene random copolymer, crystalline propylene/butene-1 random copolymer, and crystalline ethylene/propylene/butene-1 ternary random copolymer have excellent transparency.・Using its impact resistance and heat sealability, it is widely used as a film or sheet for general packaging.

Various studies have been made to improve decorative properties, gas barrier properties, etc. by vapor-depositing metal onto films or sheets made of this crystalline propylene random copolymer. However, for example, in an aluminum vapor-deposited film in which a metal such as aluminum is vapor-deposited on a film made of this crystalline propylene-based random copolymer, the adhesion between the film layer and the aluminum vapor-deposited layer is weak, and
There are problems in that the printability of the aluminum vapor-deposited surface and the adhesion to other films are extremely reduced.

In order to improve these shortcomings, the Special Publication No. 57-1437
Many proposals have been made, such as in Japanese Patent Publication No. 7 and Japanese Unexamined Patent Publication No. 59-25829, but metal-deposited films made only of crystalline propylene random copolymers related to these proposals have problems when used for packaging. Since the non-evaporated surface is heat-sealed, the adhesion of the metal vapor-deposited film on the heat-sealed area may decrease due to the heating caused by heat-sealing during bag making and filling packaging, and the metallic luster may be lost, or the heat-sealed area may However, there remained a problem in that the deposited film near the boundary between the heat-sealed area and the non-heat-sealed area peeled off.

The present inventors investigated to solve the problems of the above-mentioned metal vapor deposited film, and first, the A layer made of crystalline polypropylene or a crystalline propylene random copolymer with a crystal melting point exceeding 140°C and the A layer Metal vapor deposition in which metal is vapor-deposited on the A-layer surface of a laminated film obtained by coextruding B-layer consisting of a crystalline propylene-based random copolymer having a crystalline melting point 5° C. or more lower than the polymer or copolymer used for the layer. Although the above-mentioned problems have been solved by the proposed film (Japanese Patent Application No. 61-120923), the metal vapor-deposited film has poor blocking resistance and slip properties on the non-deposited surface, poor winding after vapor deposition, and problems in the next process. There have been cases where this has caused practical problems due to poor workability in printing, laminating, bag making, filling and packaging processes, and poor opening performance as a bag.

As a result of various studies in order to eliminate the drawbacks of this laminated type metal-deposited film or sheet, the present inventor has determined that a specific amount of organic cured resin powder exhibiting a specific spherical shape is added to the non-vapor-deposited surface of the laminated film or sheet. It has been discovered that by using a copolymer having the following properties, the above-mentioned drawbacks can be overcome without losing the features of the laminated type, and the present invention has been achieved.

(Means for Solving the Problems) That is, the present invention provides a (A) layer made of crystalline polypropylene or a crystalline propylene copolymer containing propylene as a main component, and a polypropylene layer used in the (A) layer. Or, it consists of a composition in which 0.01 to 2.0 parts by weight of organic cured resin spherical fine powder is added to 100 parts by weight of a crystalline propylene random copolymer having a melting point 5° C. or more lower than that of the copolymer (B ) is characterized by a metal vapor-deposited laminate in which a metal is vapor-deposited on the surface of layer (A) of a laminate formed by laminating layers (A) and (A) by a co-extrusion method.

The configuration will be explained in more detail below.

The crystalline polypropylene or crystalline propylene-based copolymer used in the layer (A) of the present invention is propylene alone or a copolymer of propylene with ethylene or α-olefin as a main component, such as crystalline polypropylene, Examples include a crystalline ethylene/propylene block copolymer, a crystalline ethylene/propylene random copolymer, a crystalline propylene/butene-1 copolymer, a crystalline ethylene/propylene/butene-1 terpolymer, and the like.

These are, for example, known α such as Ziegler-Natsuta series.
- Slurry process using olefin stereoregular catalysts,
It can be obtained by homopolymerization or copolymerization using known methods such as solution method and gas phase polymerization method.

These polymers and copolymers are widely known, but in the layer (A) of the present invention, crystalline polypropylene, crystalline ethylene containing 80% by weight or more of a propylene component is used.
Propylene block copolymer or crystal melting point is 145℃
The above-mentioned crystalline propylene-based random copolymers or mixtures thereof are desirable, and among these, 97 to 30% by weight of crystalline polypropylene or crystalline propylene-based random copolymers having a crystal melting point of 145°C or higher, or mixtures thereof and crystalline ethylene/propylene pro-tsuk copolymer 3
The use of a mixture of up to 70% by weight is particularly desirable because it improves the pro-knocking resistance and the adhesion of the deposited film.

The crystalline propylene random copolymer used for layer (B) may be of the same type as the random copolymer used for layer (A), but the crystalline melting point is (A>layer polymer or copolymer). It must be at least 5°C lower than the combined layer.If the difference in melting point with this (A) layer is less than 5°C, the deposited film at the sealing part may change in quality or cracks may occur during heat sealing. (B) layer has a crystal melting point of 14
It is particularly desirable to use a random copolymer having a melting point difference of 10°C or more with the layer (A) at 5°C or less. Desirable random copolymers used in layer (B) include crystalline ethylene/propylene random copolymers with an ethylene copolymerization ratio of 4 to 7% by weight, ethylene copolymerization ratio of 0.3 to 5% by weight, A crystalline ethylene/propylene-butene-1 terpolymer having a copolymerization ratio of butene-1 of 1 to 15% by weight may be mentioned.

In the random copolymer used for layer (B) in the present invention, 0.01 to 2.0 parts by weight of organic cured resin spherical fine powder is added to 100 parts by weight of the random copolymer. The spherical resin fine powder is made of a cured resin that does not melt or decompose at the processing temperature of the random copolymer, preferably 300° C. or lower, and has a spherical shape. The fine powder made of organic polymer is a thermoplastic resin,
Both thermosetting resins are widely known, but in the present invention, they are limited to spherical fine powders that do not substantially decompose or deform at processing temperatures.

Specifically, this organic cured resin spherical fine powder has, for example, a "5i-0-3i" bond obtained by hydrolyzing and condensing a hydrolyzable silane as a structural unit, and has a side chain in a "5i-0-3i" bond. Silicone resins, which are three-dimensional polymers having organic groups such as methyl groups and phenyl groups, and condensed resins having triazine rings, such as benzoguanamine-formaldehyde resins or benzoguanamine-melamine-formaldehyde resins, have excellent heat resistance and are desirable.

The method for producing this organic hardened resin spherical fine powder was disclosed in Japanese Patent Application Laid-open No. 52
It is known from Japanese Patent Application Laid-open No. 16954-16954 and Japanese Patent Application Laid-open No. 13813-1980, and has a spherical shape and a substantially uniform particle size, and can be obtained in any particle size.

Among these, in the present invention, trifunctional silanes such as methylchlorosilane and methyltrialkoxysilane or their partial hydrolysates are used in an aqueous solution of alkaline earth metal hydroxides, alkali metal carbonates, ammonia, or amines. Silicone resins made of true spherical polymethylsilsesquioxane obtained by hydrolysis and condensation or benzoguanamine formaldehyde resins are particularly desirable because they are highly effective even when added in small amounts.

In addition, true sphericity here refers to the ratio of particle diameter when the diameter in the long axis direction is X and the diameter in the short axis direction is Y when spherical particle powder is observed under magnification using an electron microscope, etc. Sphericity -X/Y Sphericity is in the range of 1.0 to 1.25, preferably in the range of 1.0 to 1.20, containing 50% or more by volume, Demonstrates particularly excellent effects.

In addition, since this organic cured resin fine powder does not substantially decompose or deform, it is important to adjust its average particle size.
In the present invention, a thickness of 0.1 to 10 μm is desirable.

If the average particle size becomes too large, it is likely to cause poor appearance due to unevenness on the film surface, frequent fish eyes, etc., and if the average particle size becomes too small, it will be difficult to obtain the desired effect of Kobeimei. A particularly desirable range is 0.3 to 5μ.

In addition, the amount of this organic cured resin spherical fine powder added is (B)
Crystalline propylene random copolymer 100 used for layer
0.01 to 2.0 parts by weight, and 0.01 parts by weight
If it is less than 2.0 parts by weight, there will be no improvement effect, and if it is added in excess of 2.0 parts by weight, the improvement effect will not increase and the appearance will only deteriorate due to frequent occurrence of fish eyes and surface roughness, which is not preferable.

For thin films with a thickness of 50μ or less, 0.0'2
~0.2 parts by weight, for thick films and sheets exceeding 0.1 weight, 0.05 to 0.5 parts by weight for relatively large grains, and 0.3 to 0.3 parts for roughened films or sheets.
A range of 1.0 part by weight is particularly desirable.

The above-mentioned polymer or copolymer or a mixture of these polymers and a block copolymer used in the (A) layer of the present invention, and the above-mentioned random copolymer and organic cured resin fine powder used in the (B) layer of the present invention. Known additives and other types of polymers can be added to the composition within a range that does not impede the purpose of the present invention, but in order to prevent deterioration of the adhesion of the vapor-deposited film and suitability for printing and lamination of the vapor-deposited surface. Therefore, it is desirable to limit the use of very specific antioxidants, inorganic fillers, and other types of polymers, and to minimize the amounts added.

In other words, fatty acids and their derivatives are conventionally used as additives, plasticizers, lubricants, antistatic agents, neutralizing agents, etc. that are liquid at room temperature and are normally added to films or sheets made of crystalline polypropylene resins. etc. not only reduce the adhesion of the deposited film, but also reduce the printability of the deposited surface.
It is not preferable to include these substances since they also significantly impair adhesion. Therefore, desirable additives that can be added are extremely limited, specifically heat stabilizers with a molecular weight of 500 or more, antioxidants, silica, zeolite, etc.
Inorganic fillers such as calcium carbonate, polyethylene that does not contain inhibitors such as the fatty acids and derivatives thereof, polymer additives such as ethylene/α-olefin copolymer rubber, etc., such as polymer or copolymer 100 Based on the weight part, one or more phenolic or phosphorus stabilizers or antioxidants with a molecular weight of 500 or more are added to o, oi to 0.
．． 3 parts by weight, 0.01 to 0.5 parts by weight of one or more inorganic fillers such as silica or zeolite, and if necessary, an ethylene-based polymer containing no additives or only the limited additives mentioned above. Coalescence, for example, density 0.90-0.
97 polyethylene, ethylene/α-olefin copolymer and ethylene/α-olefin copolymer rubber to 15
By adding less than 1 part by weight, it is desirable to improve rigidity, heat seal strength, etc.

A method of blending the copolymer used in the layer (B) of the present invention and spherical organic cured resin powder, and blending the polymer or copolymer used in each layer (A) and (B) with the above-mentioned limited additives. Any method may be used as long as it disperses and mixes uniformly, but it is preferable to achieve more uniform dispersion. As it is, use a ribbon blender,
It is particularly desirable to mix well with a Henschel mixer or the like to uniformly disperse the mixture, melt-knead the powdered mixture using an extruder or the like, cool it, then cut it, and use it as a pellet-like mixture.

The method of laminating the two layers (A) and (B) of the present invention is to laminate them in a molten state by a known method such as melt extrusion, a feed block method, or a coextrusion multilayer die method using two extruders. After that, it can be obtained by a coextrusion lamination method in which it is cooled in a water bath or a cooling roll and then wound up. This coextrusion lamination consists of (A), (
B) The thickness of each layer can be adjusted freely, and since both layers are laminated in the filmed state, there is no need for adhesion in the post-process, and in the present invention, the two layers (A) and (B) Since the main component is a homogeneous propylene polymer or copolymer, there are no problems such as poor adhesion between the eyebrows or curling of the film or sheet, which often occur with coextrusion lamination methods, making it particularly desirable.

The extrusion lamination method, in which one film is laminated by melt extrusion on the other, has poor adhesion between the layers, and when high temperature extrusion is used to increase the adhesion, the blocking resistance and slip properties of the structure used in the present invention are significantly reduced. Undesirable. In addition, in the case of a dry (or solvent-free) lamination method in which two types of films are laminated together using an adhesive, (A)
(B) Each layer is flexible and easy to stretch, and has relatively poor lubricity compared to ordinary films, so wrinkles and curling bumps are likely to occur during lamination, resulting in a significant decrease in yield. There are problems such as only low-speed processing is possible, and thinner layers are even more difficult to process, which is not preferable. In this respect, the coextrusion lamination method is particularly effective in the configuration of the present invention.

Further, the thickness ratio of the two layers (A) and (B) of the present invention can be arbitrarily selected, but practically, it is desirable that either layer has a thickness of 10% or more of the total thickness, and 20 to 80% of the total thickness. This is particularly desirable since it is easy to obtain a film or sheet with a stable range.

The structure of the present invention is two layers (A)/(B), but as a modification, using a coextrusion device that can laminate three or more types, (A)/(A)/(B) , (A)/(B
)/(B), (A)/(B)/ (A>/(B)) It is also possible to add and laminate an intermediate layer, and this is included in the present invention.

A metal is vapor-deposited on the (A) layer surface of the thus obtained (A)/(B) two-layer laminate film.

Note that it is necessary to perform surface treatment on the surface of this (A) layer in order to improve the adhesion of the deposited film. This surface treatment method may be acid treatment, flame treatment, plasma treatment, corona discharge treatment, etc., but corona discharge treatment can process the laminated film continuously and can be easily performed before winding during film formation. is simple and most desirable. Note that during this treatment, an effect promoting method such as heating or a special atmosphere such as an inert gas may be used.

The degree of surface treatment is preferably such that the wettability index measured in accordance with JIS K6768 r Wetting test method for polyethylene and polypropylene films is 35 dyn/cm or more, and particularly preferably 38 dyn/am or more.

In order to strengthen the adhesion between the film or sheet and the metal, it is preferable to apply a thin anchor coat (Anchor Coat) to the surface of the layer (A) with a thin layer of adhesive such as polyester, polyurethane, or epoxy resin.
It may be vapor-deposited after L/.

Next, the metal is deposited on layer (A) using a vacuum deposition method, that is, in a vacuum deposition apparatus equipped with a film feeding section, a deposition section, and a winding section, the atmospheric pressure inside the apparatus is reduced to 10-' Tor
The pressure is reduced to about 300 m and the filament to which a target metal such as aluminum, nickel, gold, silver, etc. is attached is heated to dissolve and evaporate the metal, and the evaporated molecules are continuously evaporated onto the surface of the unwound film. This is the most common method, but other methods such as sputtering vapor deposition and ion blating, which utilize the phenomenon in which the metal constituting the cathode scatters when discharged in a vacuum, are also possible. The metals to be vapor-deposited include aluminum, gold, silver, copper, nickel, chromium,
Examples include germanium, titanium, selenium, tin, zinc, etc., but aluminum is particularly desirable in terms of workability, economy, brightness, etc. The thickness of the metal vapor-deposited layer is usually about several tens to hundreds of angstroms (thickness) from the viewpoint of adhesion and durability.

The metal vapor-deposited laminate of the present invention thus obtained is useful on its own, but it can be printed to improve decorativeness and product image by taking advantage of the excellent adhesion of the vapor-deposited surface. Alternatively, after applying an anchor coat to the vapor-deposited surface, other types of films or sheets such as polyester, nylon, and EVAL can be laminated to further improve its functionality.

(Examples) Hereinafter, the present invention will be further explained in detail based on Examples and Comparative Examples.

The characteristics in each Example and Comparative Example were measured using the following methods and standards.

(1) Melt flow rate (MFR): J
IS K7210-1976 test condition 14 (230℃
, 2.16kgf) Unit: g/10min).

(2) Crystal melting point (Tm): Scanning differential calorimeter (abbreviation: D
A 10 mg sample was heated at 10°C in a nitrogen atmosphere using
It is expressed as the peak temperature (unit: °C) of the endothermic curve accompanying the melting of the crystal obtained by raising the temperature at a rate of /min.

Incidentally, in the case of a crystalline ethylene/propylene block copolymer, two peaks are usually shown at 155 to 163°C and around 130°C, but in the present invention, the high temperature side of the main peak is shown.

(3) Wetting index: Measured on both the film or sheet surface and the metal vapor deposited surface by the method of JIS K6768 (unit: dyn/am).

(4) Adhesiveness of vapor deposited film: After pasting a 70 mm length of 18 mm medium cellophane adhesive tape (registered trademark Sekisui Tape) on the vapor deposited film side of the vapor deposited film or vapor deposited sheet, quickly peel it off by hand and tape the adhesive tape. The area ratio of the deposited film remaining on the sample film surface without adhering to the sample film was determined and ranked as follows.

Remaining area ratio (%) Rank 97-100 5 91-96 4 80-90 3 70-79 2 Less than 70 1 The rank of high practicality is 4 or higher, preferably 5.

(5) Suitability for printing/laminating vapor-deposited surfaces
The metal surface) and the non-evaporated surface (film surface) are overlapped and
Applying a load of g/100ct, temperature 40℃, relative humidity 9
After being left in a 5% atmosphere for 72 hours, the wettability index of the vapor-deposited surface was measured. In order to be evaluated as having good suitability for printing and lamination, the wettability index needs to be 35 or more, preferably 37 or more, and the following rankings were made based on this wettability index.

Wetting index (dyn/cm) Rank 37 or higher
○ 35-36 △ 34 or less × (6) Blocking Crab The non-evaporated surfaces of 2 cm (width) x 7 cm (length) samples were overlapped over a length of 1 cm, and heated at 40°C for 24 hours under a load of 250 g/cal. After the sample was left to stand, the force required for shear peeling of the sample at a speed of 300 mm/min was determined using a tensile tester (unit: g/4 cJ). The smaller this value is, the better the blocking resistance is.

(7) Slip property (sliding friction coefficient): ASTM 018
It is expressed as the coefficient of kinetic friction between the non-deposited surfaces of the deposited film measured by the method specified in 94-63.

(8) Stability of vapor deposited film: The non-evaporated sides of the single-sided metal vapor deposited film were overlapped and heat sealed using a bar type heat sealer, and the heat seal strength was 0.3 kg/15 mm.
The condition of the heat-sealed portion of the sample that was heat-sealed at a heat-sealing temperature that reached the width or higher was observed with the naked eye and was classified into the following categories.

[Good]: There is almost no change in the vapor deposition surface between the heat-sealed area and the non-heat-sealed area.

[Defect]: The metallic luster of the vapor-deposited surface of the heat-sealed part has decreased, or the vapor-deposited layer has cracks, pinholes, etc. at the boundary between the heat-sealed part and the non-heat-sealed part.

The heat sealing conditions are seal par 10mm (width)
X 300mm (length), seal pressure crab 2kg /
cJ, sealing time = 0.5 seconds, and the heat seal strength was measured using a sample width of 15 mm and a tensile speed of 300 mm/mi.
I went with n.

Examples 1 to 6, Comparative Examples 1 to 5 (A) As a resin for layer, MFR6.8, Tm 160°C
, Tetrakis [methylene-3-(3', 5
'-di-tert-butyl-4'-hydroxyphenyl)propionate] 0.15 parts by weight of methane and 0.10 parts by weight of hydrotalcite powder with an average particle size of 1 μ as an antiblocking agent were blended and mixed in a Henschel mixer. After that, it was melt-extruded into pellets through an extruder.

In addition, as a resin for layer (B), the copolymerization ratio of ethylene is 3.5% by weight, the copolymerization ratio of butene-1 is 2.5% by weight, and the crystalline ethylene-propylene-butene-1 ternary with a Tm of 135°C. For 100 parts by weight of the copolymer, the above (A)
After blending 0.15 parts by weight of the antioxidant added for the layer and predetermined amounts of each of the eight types of additives shown in Table 1, they were similarly mixed in a Henschel mixer, and then passed through an extruder. It was pelletized to obtain 11 types of resins for layer (B).

Next, using a two-layer extruder and a two-layer T-die connected to it, one extruder is loaded with resin for layer (A), and the other extruder is loaded with resin for layer (B). were melted and extruded at 220°C, laminated in a molten state at the same temperature in a connected two-layer T-die, and the extruded film was heated to 35°C.
The film was rapidly cooled with a cooling roll, and then (A> layer surface was subjected to corona discharge treatment and wound up to obtain 11 types of single-sided treated coextruded two-layer films with a total thickness of 30 μm. Each film was (A)
The thickness ratio of the /(B) layer was adjusted to 50% to 150%, and the wettability index of the treated surface was adjusted to 40 dyn/cm. Next, set this wound film in a continuous vacuum evaporation device,
The film was continuously rolled out under a vacuum maintained at 10-'Torr, aluminum was deposited on the surface of the film, and the film was rolled up until the thickness of the deposited film was 0.04μ (400 people).
Eleven types of single-sided aluminum vapor-deposited films were obtained.

The properties of the obtained single-sided aluminum vapor-deposited film are also shown in Table 1. As is clear from Table 1, Examples 1 to 6 having the structure of the present invention are excellent in all film properties, but the films of Comparative Examples are significantly inferior in one of the properties and are not suitable for practical use. This is at a level that poses a problem.

Furthermore, it can be seen that even the anti-blocking agents generally used for plastic films are not particularly effective in the case of the present invention, and only the spherical fine powder of cured organic resin is superior.

Comparative Example 6 Using a resin with the same composition as that used as the resin for the (B) layer in Example 2, an extruder and a single NT die were connected to
It was melt-extruded at 0°C, rapidly cooled with a cooling roll kept at 35°C, and then subjected to single-sided corona discharge treatment to obtain a single-sided single-sided film with a wettability index of 406 yn/cm on the treated side and a total thickness of 30 μm. Next, this film was subjected to aluminum vapor deposition on the treated surface using a continuous vacuum vapor deposition apparatus in the same manner as in Example 2, and then wound up to obtain a single-sided aluminum vapor-deposited film with a vapor-deposited film thickness of 0.04 μm.

The obtained vapor-deposited film had good adhesion of the vapor-deposited film with a rating of 4 and suitability for printing and lamination on the vapor-deposited surface with a rating of ○. However, regarding the stability of the vapor-deposited film, the gloss was significantly reduced only in the heat-sealed area. In addition, some pinholes were generated at the boundary between the heat-sealed portion and the non-heat-sealed portion, resulting in a defect.

Example 7 (A) As a resin for layer, MFR=2.0, Tm16
65 parts by weight of crystalline polypropylene at 4°C and MFR-
1,6, Tm 160°C (and a small peak at 12+3'C), 35 parts by weight of a crystalline ethylene-propylene block copolymer with an ethylene content of 8.2% by weight, and 0.12 parts of the same antioxidant as in Example 1. Parts by weight were blended, mixed in a Henschel mixer, and then melt-extruded into pellets through an extruder. Also, as a resin for layer (B), MFR=2.2
, copolymerization ratio of ethylene is 4.5% by weight, Tm 141
Crystalline ethylene-propylene random copolymer 10 °C
0 parts by weight of the antioxidant added for the (A) layer.
．． 15 parts by weight, 0.15 parts by weight of a perfectly spherical silicone resin powder with an average particle size of 1.3μ and a sphericity of 1.12 were blended, -
It was pelletized in the same way.

Next, using a two-layer extruder and a two-layer T-die connected to it, one extruder is loaded with resin for layer (A), and the other extruder is loaded with resin for layer (B). were melted and extruded at 250°C, laminated in a molten state at the same temperature in a connected two-layer T-die, the extruded laminate was cooled with a cooling roll kept at 60°C, and then (A) layer surface was subjected to corona discharge treatment and wound to obtain a single-sided coextruded two-layer sheet with a total thickness of 0.2 mm. In addition, (A) / (B) of the sheet
Layer thickness ratio is 70%/30%, wettability index of treated surface is 43
It was adjusted to be dyn/cm. Next, this sheet was set in a continuous vacuum evaporation device, and the treated surface was subjected to aluminum evaporation in the same manner as in Example 1, and then rolled up.A single-sided aluminum evaporation sheet with a evaporation film thickness of 0.35 μm (350 people) I got it.

The adhesion of the vapor-deposited film on this vapor-deposited sheet is 5, and the printing and
Lamination suitability is ○, Brosoking force is 270g /
4 c self, slip property is 0.47, stability of the deposited film is,
There was almost no change from the non-heat-sealed part, and the result was good.

(Effects of the Invention) The metal vapor deposited laminate of the present invention has a vapor deposited film firmly adhered to it, has excellent printability and adhesion on the vapor deposited surface, and has good blocking resistance and slip property, so it can be used for secondary processing. It has excellent productivity and workability in other harmful processing processes, and there is no deterioration of the vapor deposited film during heat sealing, and it has excellent decorative properties and light shielding properties as a metal vapor deposited film or sheet. It is the one that can make the most effective use of its gas barrier properties, etc., and is particularly suitable for various packaging applications, and can also be applied to many other uses such as building materials and various containers.

Claims (5)

[Claims] (1) Layer (A) made of crystalline polypropylene or a crystalline propylene copolymer containing propylene as a main component, and a crystal having a melting point 5°C or more lower than that of the polypropylene or copolymer used in the layer (A). The composition consists of a composition in which 0.01 to 2.0 parts by weight of spherical fine powder of an organic cured resin is added to 100 parts by weight of a polypropylene random copolymer (
B) Laminated product (A) formed by laminating layers by coextrusion method
A metal vapor-deposited laminate made by vapor-depositing metal on the layer surface. (2) The crystalline propylene copolymer used in layer (A) is a crystalline ethylene/propylene block copolymer containing 80% by weight or more of a propylene component or a crystalline melting point of 1
The metal vapor deposited laminate according to claim 1, which is a crystalline propylene random copolymer having a temperature of 45° C. or higher. (3) The layer (A) consists of 97 to 30% by weight of crystalline polypropylene, a crystalline propylene random copolymer with a crystalline melting point of 145°C or higher, or a mixture thereof, and 3 to 70% by weight of a crystalline ethylene/propylene block copolymer. The metal vapor deposited laminate according to claim 1, characterized in that the metal vapor deposited laminate is made of a mixture with % by weight. (4) Organic cured resin spherical fine powder has an average particle size of 0.1 to 1
2. The metal vapor-deposited laminate according to claim 1, which is a spherical fine powder having a particle diameter of 0 μm, substantially non-melting, and a decomposition temperature of 300° C. or higher. (5) The metal vapor deposited laminate according to claim 4, wherein the organic cured resin spherical fine powder consists of polymethylsilsesquioxane, benzoguanamine formaldehyde resin, or a mixture thereof.