JPS5839451A - Metal evaporated film or sheet - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a metal-deposited film or sheet that has excellent adhesion of vapor-deposited metal particles and good weather resistance.

Various metals are vacuum-deposited on the surface of plastic film,
Materials on which a thin metal film is formed have been used as capacitor materials such as metallized film capacitors, decorative materials, light-shielding film materials, and mirror materials.

Films used for this purpose are polyethylene,
These are films and sheets obtained from polypropylene, polyvinyl chloride, and polyethylene terephthalate, and metal-deposited films based on such glass films have the characteristics of each base film. Since it is given the function of a metal thin film while still being useful, it is used for various purposes. For example, when polypropylene film is used as a base film, it can be used for small capacitor materials by taking advantage of polypropylene's dielectric properties, and when polyvinyl chloride film is used, it can be used for agriculture by taking advantage of the light-shielding properties of the metal thin film. A product that can be used as a greenhouse film is obtained. Also, those using polyethylene terephthalate film are used as mirror openings by taking advantage of the smooth metal-deposited surface.

In this way, various metal evaporated films are used to take advantage of their characteristics, but these plastic films generally have extremely poor adhesion of the evaporated metal particles to the plastic film, so they are not suitable for metal evaporation. It is necessary to perform various surface treatments such as providing an anchor layer of cationic acrylic resin, urethane resin, etc. on both sides of the film in advance, which has the disadvantage of complicating the metal deposition process. With this background in mind, the inventors have developed a weather resistant film that has excellent adhesion of vapor-deposited metal particles to the film surface Wi without performing various surface treatments on the base film surface, and that can be used in a wide range of agricultural applications. As a result of intensive studies to obtain a metal-deposited film with excellent properties, the present invention was successfully completed by using a film made of a specific acrylic multilayer structure polymer to achieve the above object.

That is, the gist of the present invention is a metal-deposited film or sheet obtained by vacuum-depositing a metal on at least one layer of a film or sheet having a thickness of 1 mm or less of the multilayer structure polymer (I) shown below.

Multilayer structure polymer (1): 80 to 100 parts by weight (hereinafter referred to as 0 parts) of an alkyl acrylate having a carbon number of 1 to 8 or a carbon number of 1 to 4
an alkyl acrylate (Moul 1) having an alkyl group of

0 to 20 parts of a monomer having a copolymerizable double bond.

0 to 10 parts of polyfunctional monomer (As)-(Aθ~(A,
) and 0.1 to 5 parts of a grafting agent (A).

80 to 100 parts of an alkyl acrylate (IIs) having an alkyl group having 1 to 8 carbon atoms; and 0 to 20 parts of a monomer (cnt) having a copolymerizable double bond.

0 to 10 parts of polyfunctional monomer (B,).

O, 1 to 5 for 100 parts of total amount of (B1) to (B,)
A crosslinked elastic polymer (phantom, 51 to 100 parts of an alkylmethafryle having 1 to 4 carbon atoms) (C,) having a composition of 51 to 100 parts of a graft cross-agent.

0 to 49 parts of a monomer having a copolymerizable double bond (C
3) with a glass transition temperature of at least 60°C
The outermost layer polymer (C) is the basic structural unit, and 8 polymers (
B) An alkyl acrylate (Di) having 10 to 90 parts of an alkyl group having 1 to 8 carbon atoms as an intermediate layer (D) between the layer and the polymer (0 layer).

90 to 10 parts of alkyl methacrylate having an alkyl group having 1 to 4 carbon atoms <OS).

Monomer CD having 0 to 20 parts of copolymerizable double bonds
I).

0 to 10 parts of polyfunctional monomer (D4).

CD &) ~ (D4) 0 0 for total amount 10011K.
The intermediate layer (D
) has a small amount of an intermediate layer (CD) in which the amount of alkyl acrylate monotonically decreases from the crosslinked elastic polymer (B) to the outermost layer polymer (C) and (K).

! Weather resistant, salt agent resistant, stress resistant white structural polymer (1) having a gel content of at least 50%
).

The base film used in the present invention is a film having good visible light transmittance and weather resistance, which is obtained by molding the multilayered polymer described above by a conventional molding method such as a T-die method or an inflation method.゛Representative examples of alkyl acrylate or alkyl methacrylate and monomers having possible double bonds that can be used in each layer of the multilayer structure polymer (1) constituting the base film used in the present invention are: Lower alkoxy acrylate, cyanoethyl acrylate.

Acrylic monomers such as acrylamide, acrylic acid, methacrylic acid, styrene, substituted styrene, acrylic acid =
) Lil et al.

In addition, the polyfunctional monomers that can be used in each layer of the multilayer structure polymer (I) include ethylene glycol dimethacrylate, 1.3 butylene glycol dimethacrylate, 1.4 butylene glycol dimethacrylate, Alkylene glycol dimethacrylate such as globylene glycol dimethacrylate is preferred, polyvinylbenzene such as divinylbenzene, alkyl resin;
- diacrylate etc. can also be used. Further, as a graft cross-agent, copolymerizable α, β-unsaturated carboxylic acid or dicarboxylic acid allyl, methallyl, crotyl ester, etc. can be used.

In particular, alimethacrylate is preferred. Triallyl cyanurate, triallylinocyanate, and the like are also effective grafting agents.

In the present invention, it is used as a base film. The film made of this multilayer structure polymer (CI) not only has excellent mechanical properties and transparency as a film, but also has excellent weather resistance and does not easily whiten due to stress or water production, so it can be used for a long time. It is extremely excellent in that the initial performance does not deteriorate at all, and these excellent features are due to its special polymer structure.

Furthermore, this multilayer structure polymer (1) is excellent as a sheet material due to its excellent transparency and processability.
), it is possible to obtain a metal-deposited sheet with excellent strength without sacrificing other properties such as mechanical properties.

In Honjitsu 1ji, the metal to be vacuum deposited on the base film or sheet is 10wHz at a temperature of 3500℃.
Any metal can be used as long as it has a vapor pressure higher than
Chromium, tin, indium, antimony, nickel, etc. are particularly suitable.

In the present invention, as a method for vacuum-depositing metal onto a base film or sheet, a commonly used vacuum deposition method can be used as is. For example, the metal is heated and evaporated in a container under high vacuum, and Alternatively, it is sufficient to vapor-deposit it on at least one portion of the sheet, and it is possible to use a method ranging from a small-scale batch method to a continuous treatment method as appropriate.

Since the metal-deposited film or sheet of the present invention uses a film or CINIT obtained from an acrylic multilayer structure 1 combination having a specific structure as a base film or sheet, its polymer structure makes it different from ordinary metal-deposited films. 1 is the required anchor Gordy 2 is the layer '! ``Is it important? ・It is possible to obtain a metal evaporated film with excellent peeling resistance without applying such surface treatment. ・Furthermore, the base material film or sheet has excellent weather resistance. Even if this metallized film or sheet is used outdoors for a long time,
9. Metal vapor-deposited I['[ can maintain its excellent properties for a long time without causing any photodeterioration of the base film or sheet.9. When used as various light-shielding materials and mirror materials, it has various effects superior to conventional gold, metal vapor deposition, and films.

EXAMPLES The present invention will be explained in detail in Examples below, but the present invention is not necessarily limited thereto.

Note that the number of copies in the examples is also based on weight. , Also, abbreviations used in the examples! There are nine ways below.

MMA: Methyl methacrylate BuA: Butyrua ≧ Sudoto.

AMA: allyl methacrylate, BD: 1,3 butylene dimethacrylate CH
P: Cumene hydroperoxide SFS
: Sojikudai 7 olmaldehyde sulfate 7 oxylate・', Example 1! Contains 250 parts of ion exchange books, sulfiosuccinic acid and pre-stects /; 211S.

After charging 80.05 parts of 8F and stirring under nitrogen, 6 parts of MMAL, 8 parts of BuA, 4 g of BD O, AMA
A mixture consisting of 1 part O, and 4 parts CHPo was charged. After raising the temperature to 70°C, the reaction was continued for 60 minutes to complete polymerization of the innermost layer polymer (mu). Then ml, 5 parts, Bu
M 22. ! S part, BD 1,0 part, AMAO025
A monomer mixture consisting of 125 parts of µag6.flum and 125 parts of CEP O was added over 60 minutes to polymerize the framework II elastomeric polymer CB).This was followed by the addition of a monomer mixture of 125 parts of μag6.flum 58.mu MAO as an intermediate layer (D). , 1 part of CHPo, and 1 part of CHPo, 0, and finally 52.25 parts of ICMMA, 2,751B of BtIA, and 1 part of CIIPo, 0.
! A monomer mixture consisting of $5 parts was mixed to form an outermost electrolyte composite (C).

5 parts of the obtained polymer emulsion per 100 parts of the polymer.
The polymer was salted out using 100% calcium chloride, washed, and dried to obtain a polymer with a multilayer structure 1 (1).

The obtained polymer was pelletized using an extruder, and then formed into a 75μ thick film using the inflation method.
did.

This film was cut into a size of 50m x 50m, and aluminum 9m was vacuum evaporated on the - side using a JEOL xxz4cm vacuum evaporation device under a vacuum of vacuum II 5 x 10-', Tlp to give an average deposited film thickness of 300 mm. A vapor deposited film was obtained.

Separately, aluminum was vacuum-deposited on a commercially available polyethylene terephthalate film having a thickness of 80 μm in the same manner as described above to obtain a deposited film having an average deposited film thickness of 310 μm.

The adhesion between the aluminum vapor-deposited film and the base film of the vapor-deposited film of the present invention and the polyethylene terephthalate vapor-deposited film obtained as described above and the base film were compared using the following method. 705m
50m of this area was covered with vapor-deposited film.
= Paste the film parallel to the vertical direction on the Ni-coated surface and place it on the cellophane adhesive tape? [K゛diameter 1O-2sa*,
The vapor-deposited film and the cellophane adhesive tape were bonded together by applying a load to the film and the cellophane adhesive tape by rotating a 5 kg brass tape back and forth 5 times. The tape was peeled off at once by holding one end of the tape, and the peeling state of the vapor-deposited film was observed.As a result, polyethylene film 7
In the case of the talate vapor-deposited film, peeling of the aluminum vapor-deposited film was observed over almost the entire surface, but in the case of the vapor-deposited film of the present invention, no peeling of the aluminum-deposited film was observed, and the state before the peeling test was maintained.

In addition, the vapor-deposited film of the present invention obtained in the same manner was subjected to accelerated exposure for 2000 hours using a sunshine weatherometer, and then the adhesion between the base film and the aluminum vapor-deposited film was measured using the method described above. It showed good adhesion as before exposure.

Example 2 A film of multilayer structure polymer (1) with a thickness of 75 μ obtained by the method of Example 1 was cut into 50 pieces x 50 pieces.
Gold was vacuum-deposited using the same method as above, and the average deposited film thickness was 80 mm.
A vapor deposited film of A was obtained.

The adhesion of the gold to the base film on the obtained gold vapor-deposited film was tested using the method described in Example 1, but no peeling of the gold was observed, indicating good adhesion.

In addition, the light reflectance and light transmittance of this vapor-deposited film at each wavelength were measured and the results are illustrated. In the figure, -IIR indicates the light reflectance, and curve T indicates the light transmittance.

Furthermore, this vapor-deposited film was subjected to accelerated exposure for 2000 hours using a Sunshine Quasi-Ometer, and the adhesion of the film remained after exposure.

Light reflectance and light transmittance at each wavelength and JI8 Z
-1702, the retention rate of tensile strength and elongation was measured. The adhesion was good before exposure, and the one-element reflectance and light transmittance were almost the same as before exposure. The measurement results of the retention of tensile strength and elongation are shown in Table 1IC, which shows that the vapor-deposited film of the present invention maintains good film properties even after exposure. In Table 1, MD indicates the vertical direction.

TD indicates the lateral direction.

Example 3 A multilayer polymer having the polymer structure shown in Table 2 was produced in the same manner as in Example 1.

The obtained multilayer structure polymer was sufficiently dried and then pelletized using an extruder. The obtained pellets were sufficiently dried and then molded into a sheet with a thickness of 0.3 cm using a T-die method. The total light transmittance of this sheet was 93, and it had excellent transparency. In addition, the edges of this sheet did not whiten at all even when punched, etc., and had excellent stress whitening resistance and workability.

This sheet was cut into 50m x 50 gourds, and aluminum was vacuum-deposited using the same method as in Example 1, with an average deposited film thickness of 1.
A vapor-deposited sheet of 50% was obtained.

This vapor-deposited sheet was subjected to an accelerated exposure test for 2000 hours of adhesion between the aluminum vapor-deposited film and the base sheet using the method shown in Example 1, and similarly excellent adhesion was exhibited.

Table 2

[Brief explanation of the drawing]

FIG. 5 is a characteristic diagram showing the light reflectance and light transmittance at each wavelength of an embodiment of the present invention.

Claims (1)

[Scope of Claims] A metal-deposited film or sheet obtained by vacuum-depositing a metal on at least one surface of a film or sheet having a thickness of 1 m or less of the multilayer polymer CI) shown below. Multilayer structure polymer (I): '80 to 100 parts by weight (hereinafter referred to as 0 parts) of alkyl acrylate having an alkyl group of 1-8 carbon atoms or an alkyl group having 1 to 1 carbon atoms
Alkyl methacrylate having 4 alkyl groups) (A
I). 0 to 20 parts of copolymerizable monomer C having two X# combinations
at) *, 0 to 10 parts of multiblinding monomer (As) *(As) ~
(As) f) Total amount 10011: vs. t, 0.1~
Innermost layer polymer (mu) consisting of 5 parts of a graft cross-agent, -80 to 100 parts of an alkyl acrylic resin (Bl) having an alkyl group having 1 to 8 carbon atoms, -0 to 20 parts A monomer (Bm) having a copolymerizable double bond of - a polyfunctional monomer (Bl) of 0 to 10 parts. 0.1 to 100 parts of total amount of (Ih) to (B,)
A crosslinked elastomeric polymer (
B) 8,゛□“ 51 to 100ii1 carbon atoms/1 to 4 alkyl metaxylate (Cs) --. 0 to 49 parts of a monomer having a copolymerizable double bond (Cs)
8) The outermost layer polymer <C> having a glass transition temperature of at least 6 parts at 0° C. is the basic structural unit, and an intermediate layer ( I))・
As 'alkyl acrylate (DI) having 10 to 90 parts of an alkyl group having 1 to B carbon atoms, 'P9'O~
Purkyl methacrylate (Dw) having an alkyl group having 1 to 4 carbon atoms in the 10 part, -0 to 20 parts of a monomer having a co-combinable double bond (D) . 0 to 1 O parts of polyfunctional monomer (B4). 0.1 to 5 per 100 parts of total amount of (DI) to (B4)
The intermediate layer (CD) consists of a graft cross-agent composition of
D) has at least one layer of and. The multilayer structure polymer has a low gel content (both 5016 and 5016).
Excellent weather resistance, solvent resistance, stress whitening resistance, water whitening resistance, and transparency (excellent multilayer structure polymer CI).