Electroplating technology for satin nickel of back coating mold and application of back coating mold electroplated with stain nickel

An electroplating process, pearl nickel technology, which is applied in the electroplating process field of back-coated mold pearl nickel, can solve the problems of uneven surface roughness and roughness variation of the coating, and achieve roughness in a short time, with uniform surface roughness and roughness controllable effect

Active Publication Date: 2018-03-23
CHANGZHOU HUAWEI ADVANCED MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to solve the problems in the prior art that the surface roughness of the coating layer is not uniform, and the roughness obtained by recycling the plating solution changes greatly, etc., and provides an electroplating process for back-coating mold pearl nickel

Method used

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  • Electroplating technology for satin nickel of back coating mold and application of back coating mold electroplated with stain nickel
  • Electroplating technology for satin nickel of back coating mold and application of back coating mold electroplated with stain nickel

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] The electroplating solution is: nickel sulfate 400g / L; nickel chloride 40g / L; boric acid 30g / L; sodium allyl sulfonate 2g / L; polyoxyethylene oleate: 8ml / L; hydroquinone: 0.05g / L;

[0034] Electroplating solution pH=4; electroplating solution temperature T=50°C; current density during electroplating: 4A / dm 2

[0035] The surface color of the coating obtained by electroplating is soft, with excellent sandblasting and matte effect, and the surface roughness is uniform. Using UV glue, UV lamp, and PET to obtain the diaphragm for haze test, the haze is 90±4%. The surface haze is relatively uniform, basically free of defects, and can be used for the production of brightening film. Since the pearl nickel coating has good corrosion resistance, it can be stored for a long time.

[0036] The plating solution in Example 1 is used repeatedly for electroplating to obtain different batches of pearl nickel, and the haze change of the brightness-enhancing film is tested by coating; ...

Embodiment 2

[0039] The electroplating solution is: nickel sulfate 400g / L; nickel chloride 40g / L; boric acid 30g / L; saccharin: 5g / L; polyoxyethylene laurate: 6ml / L; polyoxyethylene oleate: 4ml / L; Diphenylamine: 0.01g / L; electroplating solution pH=5; electroplating solution temperature T=55°C, current density during electroplating: 3A / dm 2 ;

[0040] The surface color of the coating obtained by electroplating is soft, with excellent sandblasting and matte effect, and the surface roughness is uniform. Using UV glue, UV lamp, and PET to obtain the diaphragm for haze test, the haze is 40±4%. The surface haze is relatively uniform, the surface is basically free of defects, and it can be used to produce brightening films. Because the pearl nickel coating has good corrosion resistance, it can be stored for a long time; the plating solution is recycled many times for electroplating to obtain different batches of pearl nickel , the change of haze is small through coating test, and the haze stabili...

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Abstract

The invention belongs to the technical field of electroplating and particularly relates to an electroplating technology for satin nickel of a back coating mold and the application of the back coatingmold electroplated with the stain nickel. Polishing treatment, oil removal treatment and acid pickling treatment are conducted on the surface of a copper mold; then electroplating of the stain nickelis conducted, wherein the copper mold is used as the cathode, a titanium basket containing nickel cakes is used as the anode, the copper mold and the titanium baske are placed in a satin nickel plating solution for electroplating, and a layer of satin nickel having certain roughness is obtained from the surface of the copper mold. Through addition of a non-ionic surface active agent and a stabilizer to a watt type plating solution, the satin nickel electroplating technology achieving the aims that the plating solution can be recycled, the change of the roughness of the plating layers is smallafter the plating solution is recycled, the surface roughness is uniform, and the roughness is controllable is obtained.

Description

technical field [0001] The invention belongs to the technical field of electroplating, and in particular relates to an electroplating process and application of back-coated mold pearl nickel. Background technique [0002] In the production process of the brightness enhancement film, in addition to coating the structure with improved luminous efficiency on the side of the polyethylene terephthalate film (Polyethyleneterephthalate, PET for short), it is necessary to use a mold with a certain roughness as a template to The resin is quickly optically cured and transferred to the other side of the PET by negative engraving, that is, the back coating of the brightness enhancing film can be obtained with the functions of covering defects and preventing adsorption and diffusion. Existing back-coating molds are mostly obtained by sandblasting, and a back-coating mold with a certain roughness can be obtained by sandblasting a mold with no defects on the surface. In order to obtain th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C25D3/16C25D3/12C25D5/34C25D5/48
CPCC25D3/12C25D3/16C25D5/34C25D5/48
Inventor 颜奇旭张伟伟翟才金
Owner CHANGZHOU HUAWEI ADVANCED MATERIAL
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