# US 4,393,120 A · Plastic coated with golden evaporated film

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- Number: US 4,393,120 A
- Document ID: US4393120A
- Status: Granted
- Kind: A
- Application number: 06/294,030
- Filed: 1981-08-18
- Granted: 1983-07-12
- Earliest claimed: 1980-09-26
- Assignees: Yuken Industry Co., Ltd.
- Inventors: Haruhisa Watai; Hiroyuki Furuta; Akira Kawamoto
- Web page: https://patentgrep.com/patent/US4393120A

## CPC

- B44C 1/14: Metallic leaves or foils, e.g. gold leaf
- B44C 5/0415: {containing metallic elements}
- C08J 7/0423: {with at least one layer of inorganic material and at least one layer of a composition containing a polymer binder}
- C08J 7/06: with compositions not containing macromolecular substances
- C23C 14/024: {Deposition of sublayers, e.g. to promote adhesion of the coating (C23C14/027 takes precedence)}
- C23C 14/20: on organic substrates
- C23C 14/205: {by cathodic sputtering}
- Y10T 428/31554: Next to second layer of polyamidoester
- Y10T 428/31562: Next to polyamide [nylon, etc.]
- Y10T 428/31565: Next to polyester [polyethylene terephthalate, etc.]
- Y10T 428/3158: Halide monomer type [polyvinyl chloride, etc.]
- Y10T 428/31583: Nitrile monomer type [polyacrylonitrile, etc.]
- Y10T 428/31587: Hydrocarbon polymer [polyethylene, polybutadiene, etc.]
- Y10T 428/31591: Next to cellulosic
- Y10T 428/31601: Quartz or glass
- Y10T 428/31605: Next to free metal
- Y10T 428/31678: Of metal
- Y10T 428/31681: Next to polyester, polyamide or polyimide [e.g., alkyd, glue, or nylon, etc.]
- Y10T 428/31692: Next to addition polymer from unsaturated monomers
- Y10T 428/31699: Ester, halide or nitrile of addition polymer
- Y10T 428/31786: Of polyester [e.g., alkyd, etc.]
- B44C: PRODUCING DECORATIVE EFFECTS (processes for applying liquids or other fluent materials to surfaces, in general B05D; shaping of plastics or substances in a plastic state B29C; printing processes to produce transfer pictures B41M3/12; thermographic duplication or marking methods B41M5/00); MOSAICS; TARSIA WORK (imitation of mosaic or tarsia work patterns B44F11/04); PAPERHANGING {(labels G09F; multi-step processes for making paper labels or tags B31D1/02)}
- C08J: WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H (working, e.g. shaping, of plastics B29)
- C23C: COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL (making metal-coated products by extrusion B21C23/22; covering with metal by connecting pre-existing layers to articles, see the relevant places, e.g. B21D39/00, B23K; metallising of glass C03C; metallising mortars, concrete, artificial stone, ceramics or natural stone C04B41/00; enamelling of, or applying a vitreous layer to, metals C23D; treating metal surfaces or coating of metals by electrolysis or electrophoresis C25D; single-crystal film growth C30B; by metallising textiles D06M11/83; decorating textiles by locally metallising D06Q1/04)
- Y10T: TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION

## Abstract

In a plastic coated with metal evaporated film comprising a primary coated layer, a golden evaporated film layer and a last coated layer constituted on the surface of a plastic substratum in the order from the bottom, golden evaporated film layer is made the of Cu - Al - Sn alloy or Cu - Zn - Sn alloy mainly composed of Cu and applicable to trim of automobiles, living apparatus and effects as decorative members.

## Claims

### Claim 1

In a plastic article coated with a golden color evaporated metal film and comprising a plastic substrate, a primary coating layer provided on said substrate, a golden color evaporated metal film provided on said primary coating layer and an outer coating layer provided on said golden color evaporated metal film, the improvement wherein said golden color evaporated metal film is a Cu-Sn-Al alloy composed of 5-15 wt% Al, 3-20 wt% Sn, less than 6 wt% impurities and the balance 75-90 wt% Cu.

### Claim 2 (depends on 1)

The plastic article of claim 1 wherein said plastic substrate is a high molecular weight polymer having flexibility, said golden color evaporated metal film is of the sputtered type and said outer coating layer is a resin containing 0.1 to 1.0 wt.% of benzotriazole or a derivative thereof.

### Claim 3

In a plastic article coated with a golden color evaporated metal film and comprising a plastic substrate, a primary coating layer provided on said substrate, a golden color evaporated metal film provided on said primary coating layer and an outer coating layer provided on said golden color evaporated metal film, the improvement wherein said golden color evaporated metal film is a Cu-Zn-Sn alloy composed of 20-45 wt% Zn, 2-15 wt% Sn, less than 0.5 wt% impurities and the balance 50-70 wt% Cu.

### Claim 4 (depends on 3)

The plastic article of claim 3, wherein said plastic substrate is a high molecular weight polymer having flexibility, said golden color evaporated metal film is of the sputtered type and said outer coating layer is a resin containing 0.1 to 1.0 wt% of benzotriazole or a derivative thereof.