Preparing method for vinyl plastic film silver cladding
A technology of plastic film and polyethylene, which is applied in the field of preparation of polyethylene plastic film silver coating, can solve the problems that it is difficult to ensure the uniformity and continuity of the catalytic center, easy to form chemical coating, and affect the first-time pass rate, etc., to achieve favorable Environmental protection, film treatment cost reduction, and treatment cost saving effects
Inactive Publication Date: 2016-03-02
SUZHOU VOCATIONAL UNIV
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Problems solved by technology
At present, chemical treatment, solvent treatment, coating treatment, flame treatment, corona treatment and ultraviolet irradiation are usually used to coat metal coatings on polyethylene films. Although these methods are relatively new, the process conditions Relatively harsh, the one-time pass rate is seriously affected by the processing process and process operation technology, so it is easy to form surface treatment deviations, resulting in defects in the metal coating; mechanical roughening, chemical roughening, sensitization, activation, chemical plating and other processes are Plastic coating has been widely used since it was put into industrial production in 1962.
Although this method is mature, the quality is not good, and the one-time pass rate is seriously affected by the processing process, especially the operation technology of the sensitization and activation process. The purpose of sensitization and activation is to form a uniform, continuous layer of precious metal on the surface of the product However, it is difficult to ensure the uniformity and continuity of the catalytic center in the production process, so it is easy to form defects in the chemical coating. Therefore, improving the sensitization and activation process can effectively improve the quality of the polyethylene film metal coating
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[0022] A kind of preparation method of polyethylene plastic film silver coating of the present invention, preparation method comprises chemical degreasing → physical roughening → chemical etching → sensitization activation-silver coating; Its specific steps are as follows:
[0023] 1) Chemical degreasing: use a mixture of 3-10% sodium phosphate and 1:1-2 acetone or 1:1-2 ethanol for 2 times of rinsing and degreasing, 10-20min, rinse with pure water;
[0024] 2) Physical roughening: after chemical degreasing, use 1.0-10.0g / m of quartz sand with a particle size of 1-2mm 2 Density Perform oscillating cycle physical sanding on the surface of polyethylene plastic film for 0.5-3h at a temperature of 25°C, oscillating speed of 90-150r / min, rinse with pure water; make pits appear on the surface of polyethylene plastic film and enhance the hydrophilicity of the surface ;
[0025] 3) Chemical etching: At 50-80°C, soak the polyethylene plastic film with a mixture of 10-20% sodium hydrox...
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Abstract
The invention discloses a preparing method for a vinyl plastic film silver cladding. The preparing method includes the steps of chemical oil removing, physical roughening, chemical etching, sensitizing and activating and silver cladding. According to the preparing method, the combined technology of sensitizing and activating and chemical silvering is used, the operation process is simplified, and non-toxic or low-toxic raw materials are selected at the normal temperature for plastic surface treatment and the wet chemical plating technology; and in addition, the combining force of the cladding and a film is good, the surface of the thin film can have the effects of conducting electricity and resisting static and bacteria, and the use range of the vinyl plastic film is expanded.
Description
technical field [0001] The invention relates to a simplified coating preparation process. Non-toxic or low-grade raw materials are selected for plastic surface treatment and wet chemical plating technology at normal temperature, and fine silver particles with good antibacterial properties and binding force are finally obtained on the surface of polyethylene film materials. plating. Background technique [0002] Polyethylene film is a translucent, glossy, soft film with excellent chemical stability, heat sealability, water resistance and moisture resistance, freezing resistance, and can be boiled. It is currently the most widely used and used in the largest amount. A food plastic packaging film. At present, chemical treatment, solvent treatment, coating treatment, flame treatment, corona treatment and ultraviolet irradiation are usually used to coat metal coatings on polyethylene films. Although these methods are relatively new, the process conditions Relatively harsh, the ...
Claims
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IPC IPC(8): C23C18/22C23C18/28C23C18/44
CPCC23C18/22C23C18/2013C23C18/2086C23C18/44
Inventor 俞晟
Owner SUZHOU VOCATIONAL UNIV