JPH01147054A - Metallic vapor deposited transcribing film and its production - Google Patents

Abstract

PURPOSE:To manufacture a metallic vapor deposited transfer film excellent in scratchability, bendability, and printability by applying easily peelable resin to a film as base material, vapor-depositing a metal onto the above, and further applying specific resin to the above. CONSTITUTION:A resin layer 2 of nitrocellulose type, etc., easily peeled and excellent in adhesive strength to a metallic vapor deposited layer is applied to one side of a film 1 as base material excellent in heat resistance and dimensional stability, and a vacuum vapor deposition layer 3 of a metal, such as Al, is provided to the above to prepare a metallic vapor deposited laminated body, and then resin of 100% solid content and <=250 deg.C m.p., such as ethylene- vinyl acetate copolymer, is applied to >=8mu thickness to the metallic vapor deposited layer 3 side, or, peeling varnish is applied to the film 1 as base material, and a metallic anchor agent is further applied to the above, and then the metallic vapor deposited layer 3 and the resin layer 4 of 100% solid content are provided to the above in succession.

Description

[Detailed description of the invention] (Industrial application field) The present invention relates to metallized transfer films.

More specifically, the present invention relates to a metallized transfer film that has excellent gloss, scratch resistance, bendability, printability, etc., and can be used in fields such as paper, stickers, in-molds, and general labels.

(Prior art) Metal vapor deposited films conventionally used for the above-mentioned purposes are coated with a base film K14J release varnish, printed on it, or directly coated with a metal vapor deposition anchor coating agent, and then coated with a metal vapor deposition anchor coating agent. The method used is to perform metal vapor deposition and apply heat-sensitive adhesive in the final step. The heat-sensitive adhesives are organic solvent solution adhesives (acrylic resins, alkyl-phenol resins, etc.), water-based adhesives (ethylene-vinyl acetate resins, salt-vinyl acetate resins, etc.), and roll coater adhesives.
, gravure coater, knife coater, etc. Further, it is also possible to print the metal vapor-deposited transfer film at the time of production or after bonding it to the object to be transferred.

(Problems to be Solved by the Invention) In the above-mentioned conventional technology, since the heat-sensitive adhesive layer is generally very thin (1 to 5 μm), it has poor scratch resistance and bending resistance when bonded to a transfer object. , gloss, printability (especially offset printing), etc. are poor. Furthermore, in the case of water-based adhesives, corrosion of metal vapor deposition also becomes a problem.

(Means for Solving the Problems) As a result of intensive studies by the present inventors to solve the above-mentioned problems, in the above-mentioned vapor-deposited transfer film, the adhesive layer is made of a resin with a solid content of 100°, and the resin The inventors have discovered that the above problems can be solved by using a resin that has a coating thickness of 8 microns or more and can be laminated at a processing temperature of 250° C. or lower, resulting in the present invention.

The present invention will be explained in more detail below using the drawings.

As shown in Fig. 1, one side of the base film (1) has excellent heat resistance and dimensional stability, and the base film (1) is easily peeled.
A resin layer (2) having excellent adhesion to the metal vapor deposited layer is applied, and metal vapor deposition M (3) is applied thereon to produce a metal vapor deposited laminate. Next, a resin having a solid content of 100 cm that has adhesive properties to both the metal vapor deposited layer (3) and the transferred object is applied to the metal vapor deposited layer (3) of the laminate to a resin thickness of 8 μ or more [resin layer ( 4
)] and is a metallized transfer film coated at a processing temperature of 225°C or less.

In addition, as shown in Figure 2, the base film (1) is coated with a release varnish (
6) may be applied, and then a metal vapor deposition anchor agent (7) may be applied thereon.

As the base film (1), untreated biaxially oriented polypropylene film, untreated polyester film, etc., which have excellent heat resistance and dimensional stability, are suitable for use as a carrier film, as well as other composite films and coextruded films. Film, paper, etc. can also be used.

Next, the resin layer (2) must not be peeled off when producing the metallized transfer film, and the base film (1) must be easily peeled off after being bonded to the object to be transferred. Note that the resin layer (2) may be transparent or colored. Therefore, the resins are nitrocellulose resin, acrylic resin, etc. Riwarethane resin, cellulose acetate globionate resin, cellulose acetate butyrate resin, etc. can be used, and it is also possible to improve the releasability and adhesion by mixing two or more of these. Alternatively, a release varnish such as an acrylic resin may be applied onto the base film (1), and the resin may be applied thereon as a vapor deposition anchor agent.

Next, a metal vapor deposition layer (3) is formed by vapor deposition on the entire surface using a normal vacuum vapor deposition machine. Aluminum, tin, chain, nickel, etc. are used as the metal, and the degree of vacuum is 10" to 10-
'Pa, vapor deposition is performed to a film thickness of 100 to 1000X to produce a film with metallic luster.

Next, as a resin having a solid content of 100 g to form a resin layer (4) to be coated on the metal vapor deposited layer (3) of the metal vapor deposited laminate consisting of the core layers (1 to 3), ethylene-acrylic acid is used. One type or a combination of two or more of polymer resins, ethylene-vinyl acetate copolymer resins and acid-modified products thereof, ethylene-acrylic acid ester copolymer resins and acid-modified products thereof, etc. may be used.

In addition, tackifiers (rosin, rosin modified resin, chill resin, chill modified resin, aliphatic hydrocarbon resin, aromatic hydrocarbon resin, ketone resin, cyclized dem, etc.), wax (
) mother rough-in wax, low-molecular polyethylene, synthetic wax, etc.), polyethylene and modified products thereof, etc. can be added as appropriate. In addition, antioxidants, slylag agents,
There is no harm in adding anti-zolocking agents, etc.

If the thickness of the resin layer (4) is less than 8 μm, when it is transferred to a porous object such as paper or cloth by heating and pressurizing, it will not be able to sufficiently hide the base, so that super gloss will not be obtained. Poor scratch resistance, bendability, and printability. The optimum film thickness is 10-50μ. In addition, when the processing temperature exceeds 250°C, the resin layer (2) coated on the metal vapor deposited layer (3)
), -1! Bamboo release varnish (6), vapor deposition anchor agent (7)
Because of the lack of heat resistance, white spots and cracks occur in metal vapor deposition, making it impossible to obtain sufficient gloss.

The object to be transferred with the metallized film of the present invention is as follows:
It may be a porous base material such as paper, cloth, or wood, or a non-porous base material such as a film, sheet, or molded product, or a combination of these may be used.

In order to transfer the metallized transfer film of the present invention having the above-described structure onto a transfer object, the metallization transfer film is placed on the transfer object, heated and pressurized, and after cooling, the base film is removed from the transfer object. There is a method in which (1) is peeled off, or a method in which the metal vapor-deposited transfer film is supplied into a mold of a plastic molded container and the base film is peeled off after integrally molding with the container.

(Example) <Example 1> Untreated biaxially oriented polypropylene film with a thickness of 20μ (
Release varnish with the following composition on one side of Tokyo Cellophane Paper Co., Ltd.: Nitrocellulose resin 14 parts Polyurethane resin 6N ethyl acetate
80# was applied uniformly over the entire surface using a gravure plate with a plate depth of 30 μm. Next, Niacrylic resin as an anchor for aluminum deposition with the following composition: 20 parts methyl ethyl ketone 4ON ethyl acetate
40〃 with a gravure plate with a plate depth of 30μ1
1 Applied over varnish. Next, a vacuum evaporator was used to coat the anchor coating agent for aluminum evaporation, and 10"
A 400-layer aluminum vapor deposition layer was formed at a vacuum degree of Pa. Next, the following solid content: 100 parts resin: Ethylene-vinyl acetate copolymer 40 parts Low molecular weight?
A metallized transfer film was prepared by coating with 10% polyethylene wax using an extrusion coating method at a processing temperature of 220° C. and a resin film thickness of 30 μm.

Next, the metal vapor-deposited transfer film was placed in close contact with Saran Kraft paper at 85 cm/m2, with a surface temperature of 150°C, a silicon wrapper roll, and a pressure of 2 to 9/cIrL! , speed 5
Transfer was performed under conditions of Vmln, and then the base film was peeled off and offset printing was performed on the top surface of the release varnish.

The results shown in Table 1 were all good.

<Example 2> In place of the release varnish and anchor coating agent for aluminum deposition in Example 1, a resin having the following release function and aluminum deposition anchor function was used: Polyurethane resin 10 parts Ethyl acetate 4ON methyl ethyl ketone
The same procedure was carried out except that 4ON was applied uniformly over the entire surface using a gravure plate with a plate depth of 30 μm.

The results shown in Table 1 were all good.

<Example 3> A 25μ untreated polyester film was used as a substitute for the untreated biaxially stretched 91J propylene film of Example 2, and a 200μ monopropylene sheet was used as a substitute for Saran Kraft paper as the transfer target. The same procedure was carried out except that a silicone rubber roll having a surface temperature of 200° C. was used.

The results shown in Table 1 were all good.

<Example 4> The metallized transfer film of Example 3 was supplied into the mold of a polypropylene molding container, and the polypropylene resin was heated at 220°C.
The sample was injected with a pressure cuff of 00 kl/CrrL'', the injection time was 5 seconds, and the total cycle time was 40 seconds.The base film was then peeled off.

The results shown in Table 1 were all good.

<Comparative Example 1> In place of the resin with a solid content of 100% in Example 2, alkyl-
The same procedure was carried out except that the phenol resin was applied to the skin to a thickness of 4 μm.

The results are shown in Table 1, with poor through-gloss, scratch resistance, bendability, and printability, with printing (offset) suitability being the worst.

<Comparative Example 2> Instead of the resin with a solid content of 100% in Example 2, K, ethylene-
The same procedure was carried out except that the coating film thickness of the vinyl acetate copolymer emulsion was 4 μm.

The results are shown in Table 1: poor throughput, gloss, scratch resistance, bendability, corrosion, printability, and water resistance, and poor scratch resistance, corrosion, and printing (offset) suitability.

<Comparative Example 3> The same procedure was carried out as in Example 3, except that instead of the resin having a solid content of 100%, an acrylic emulsion was used to form a coating film of 4 μm.

The results shown in Table 1 were poor in perforation, scratch resistance, bendability, corrosion, and printing (offset) suitability.

(Evaluation test method) 1) Gloss Reflection gloss was measured at an incident angle of 60 degrees and a reflection angle of 60 degrees using a reflection gloss meter (VG-ID type) manufactured by Nippon Denshoku Co., Ltd. (
(according to section 6-7 of "JISK-540 Or Paint General Test Methods").

2) crack By visual inspection.

3) Spider By visual inspection.

4) Scratch JISK-540Or Paint General Test Methods Tested using Mitsubishi UNI Pencil H based on J6-14.

However, the load is 10. P-1=0.005P.

5) Bending 15αX15cr! Fold the sample L with the vapor-deposited side facing up, aligning the opposing corners, press firmly with your fingers so that the fold is 180 degrees, then put it back together and attach cellophane tape to the fold. , and slowly peeled it off in a 90 degree direction (
Taniorishi). A similar test was also conducted using a sample of 15crILX15cIIL with the vapor deposition side facing down (mountain folding). Then, the vapor-deposited surface that was peeled off by the cellophane tape was visually judged.

6) Place the corrosion sample with the vapor deposition side facing up in a constant temperature and humidity chamber maintained at a temperature of 40°C ± 1°C and a humidity of 80°C ± 1°C, take it out after 96 hours, and dry it for 30 minutes at a temperature of 40°C. Missing parts due to corrosion of the deposited metal were visually determined.

7) Printability (Printed with Niedai Cure 2 [Dainippon Ink and Chemicals (lead-based ultraviolet curable ink)] using a R1 Tester 2 type offset printing machine made by Shimeme Seisakusho, and Aigara Fix @) jJJ UB -06 type ultraviolet irradiation equipment,
Cured and dried under the conditions of 80 Wkn and 20 m/min,
Ink transferability, adhesion, and paper smearing properties were evaluated.

8) Water resistance After immersing in distilled water kept at 25℃ for 2 hours,
After drying for a period of time, the presence or absence of blisters, peeling, whitening, and cracks on the deposited surface was visually determined.

(Effects of the Invention) The metallized transfer film of the present invention has superior scratch resistance, bendability, printability, etc. compared to conventional metallized paper, and is also flexible in its selection as a material to be transferred. Features such as no need for moisture can be obtained.

[Brief explanation of the drawing]

1 and 2 show cross-sectional views of metallized transfer films showing embodiments of the present invention. DESCRIPTION OF SYMBOLS 1... Base film, 2... Peeling and vapor deposition anchor double duty resin layer, 3... Metal vapor deposition layer, 4... Solid content 100
Resin layer by % resin. Agent Patent Attorney Katsutoshi Takahashi Figure 1 Figure 2

Claims (1)

[Claims] 1. A base film (1), a resin layer (2) that is easily peelable from the base film and has metal vapor deposition suitability, a metal vapor deposited layer (
3) A metallized transfer film in which resin layers (4) are sequentially laminated, the resin layer (4) has a layer thickness of 8μ or more, and the resin layer is made of a resin with a solid content of 100%. The melting temperature of the resin that is molded and has a solid content of 100% is 250°C.
The above metallized transfer film, characterized in that: 2. The metallized transfer film according to claim 1, wherein the resin layer (2) comprises a release varnish and a metallized anchor coating agent. 3. Coat one side of the base film with a resin that is easily peelable from the film and suitable for metal vapor deposition, then perform metal vapor deposition on the resin layer to produce a metal vapor deposited laminate, and then apply the metal vapor deposited laminate to the base film. A method for producing a metal vapor-deposited transfer film, which comprises applying a 100% solid resin having a melting temperature of 250° C. or less to a thickness of 8 μm or more on the metal vapor-deposited layer side.