# US 2013/0157046 A1 · Plastic article and method for manufacturing the same

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- Number: US 2013/0157046 A1
- Document ID: US20130157046A1
- Status: Published application
- Kind: A1
- Application number: 13/528,253
- Filed: 2012-06-20
- Published: 2013-06-20
- Earliest claimed: 2011-12-17
- Assignees: FIH (Hong Kong) Limited; Shenzhen Futaihong Precision Industry Co., Ltd.
- Inventors: Xu LIU; Da-Hua CAO
- Web page: https://patentgrep.com/patent/US20130157046A1

## CPC

- B32B 7/04: Interconnection of layers
- B32B 27/06: as the main or only constituent of a layer, {which is} next to another layer of {the same or of} a {different material (next to a layer of a particular substance B32B9/045; next to a bituminous or tarry layer B32B11/046; next to a water setting substance layer B32B13/12; next to a metal layer B32B15/08; next to a glass layer B32B17/10; next to a layer formed of natural mineral fibres or particles B32B19/045; next to a wood layer B32B21/08; next to a cellulosic plastic layer B32B23/08; next to a natural or synthetic rubber layer B32B25/08)}
- C23C 14/024: {Deposition of sublayers, e.g. to promote adhesion of the coating (C23C14/027 takes precedence)}
- C23C 14/0682: {Silicides}
- C23C 14/584: {Non-reactive treatment}
- Y10T 428/265: 1 mil or less
- Y10T 428/31678: Of metal
- B32B: LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- 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

A plastic article includes a plastic substrate and a non-conductive coating formed on the plastic substrate. The non-conductive coating is a Si—Al composite layer. The Si—Al composite layer has a L* value between 70 to 75, an a* value between 0 to 0.5, and a b* value between 0 to 0.5 in the CIE LAB. A method for manufacturing the plastic article is also provided.

## Claims

### Claim 1

A plastic article, comprising:
a plastic substrate;
a non-conductive coating formed on the plastic substrate, the non-conductive coating being a Si—Al composite coating, the non-conductive coating having a L* value between about 70 to about 75, an a* value between about 0 to about 0.5, and a b* value between about 0 to about 0.5 in the CIE L*a*b* color space.

### Claim 2 (depends on 1)

The plastic article as claimed in claim 1, wherein the non-conductive coating has a thickness of about 20 nm to about 40 nm.

### Claim 3 (depends on 2)

The plastic article as claimed in claim 2, wherein the plastic article further includes a base paint coating formed between the plastic substrate and the non-conductive coating.

### Claim 4 (depends on 3)

The plastic article as claimed in claim 3, wherein the base paint coating has a thickness of about 8 μm to about 15 μm.

### Claim 5 (depends on 3)

The plastic article as claimed in claim 3, wherein the plastic article further includes a top paint coating formed on the plastic substrate.

### Claim 6 (depends on 5)

The plastic article as claimed in claim 5, wherein the top paint coating has a thickness of about 10 μm to about 20 μm.

### Claim 7 (depends on 6)

The plastic article as claimed in claim 6, wherein the top paint coating is transparent.

### Claim 8

A method for manufacturing a plastic article, comprising:
providing a plastic substrate;
forming a non-conductive coating on the plastic substrate by vacuum sputtering, the non-conductive coating being a Si—Al composite coating, Si—Al composite targets being used as targets to form the Si—Al composite coating, the Si—Al composite coating having a L* value between about 70 to about 75, an a* value between about 0 to about 0.5, and a b* value between about 0 to about 0.5 in the CIE L*a*b* color space.

### Claim 9 (depends on 8)

The method for manufacturing a plastic article as claimed in claim 8, wherein in the Si—Al composite targets, the mass percentage of the elemental Si is about 70% to about 80%, the mass percentage of the elemental Al is about 20% to about 30%.

### Claim 10 (depends on 9)

The method for manufacturing a plastic article as claimed in claim 9, wherein during deposition of the Si—Al composite coating, a power between about 6 kW to about 10 kW is applied to the targets, argon gas is used as a working gas and have a flow rate from about 160 sccm to about 250 sccm, depositing of the non-conductive coating take about 2 minutes to 6 minutes with all materials and the chamber at room temperature.

### Claim 11 (depends on 9)

The method for manufacturing a plastic article as claimed in claim 9, wherein the method further comprise a step of forming a base paint coating on the plastic substrate before depositing the Si—Al composite coating.

### Claim 12 (depends on 11)

The method for manufacturing a plastic article as claimed in claim 11, wherein the top paint coating is UV paint coating or a thermal-curable paint coating.

### Claim 13 (depends on 12)

The method for manufacturing a plastic article as claimed in claim 12, wherein when the base paint coating is UV paint coating, the base paint coating formed by the following steps: UV paint is sprayed on the plastic substrate, UV paint is exposed to UV light having a wavelength in a range from about 230 nm to about 400 nm and an energy of between about 1200 mJ/cm2 to about 1500 mJ/cm2 for about 6 min to about 15 min.

### Claim 14 (depends on 11)

The method for manufacturing a plastic article as claimed in claim 11, wherein the method further comprise a step of forming a top paint coating on the Si—Al composite coating.

### Claim 15 (depends on 14)

The method for manufacturing a plastic article as claimed in claim 14, wherein the top paint coating is UV paint coating or a thermal-curable paint coating.

### Claim 16 (depends on 15)

The method for manufacturing a plastic article as claimed in claim 15, wherein when the top paint coating is UV paint coating, the top paint coating formed by the following steps: UV paint is sprayed on the plastic substrate, the UV paint is exposed to UV light having a wavelength in a range from about 230 nm to about 400 nm and an energy of between about 1500 mJ/cm2 to about 1800 mJ/cm2 for about 6 min to about 15 min.