Preparation device and method of silver-plated non-woven fabric

Abstract

The invention relates to a device and a method for preparing a silver-plated non-woven fabric. The preparation device comprises an internal vacuum chamber, an evaporator used for silver atom evaporation is arranged in the internal vacuum chamber, a silver atom steam nozzle is formed in the internal vacuum chamber, and a large-diameter refrigerant roller, a large-diameter unwinding shaft and a winding shaft are further arranged outside the internal vacuum chamber. The large-diameter unwinding shaft and the winding shaft are located on the two sides of the large-diameter refrigerant roller, the height of the large-diameter unwinding shaft and the height of the winding shaft are larger than the height of the large-diameter refrigerant roller, and the large-diameter refrigerant roller is located at a silver atom steam nozzle of the vacuum chamber. According to the preparation device and method of the silver-plated non-woven fabric, silver atoms can be firmly and uniformly plated on the non-woven fabric.

Description

technical field [0001] The invention relates to a preparation device and method for silver-plated non-woven fabrics, belonging to the technical field of silver-plated non-woven fabrics. Background technique [0002] Non-woven fabric is made of polypropylene resin as the main raw material. It is a fabric formed without spinning and weaving. It is just a web structure formed by directional or random arrangement of textile short fibers or filaments. It has moisture-proof and breathable properties. , flexible, light weight, non-combustible, easy to decompose, low price, non-toxic and non-irritating, etc., can be used in various fields such as medical and health care, industry, packaging, automobile industry, building materials, furniture, etc. [0003] Silver ions have a strong bactericidal and antiseptic effect, can kill almost all microorganisms, and have antibacterial effect at very low concentrations. Silver ions can absorb the protease of bacteria and quickly combine with i...

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Problems solved by technology

[0004] At present, although there are some methods and equipment for preparing silver-plated non-woven products on the market, the main method is to impregnate the low-concentration silver ion solution on the non-woven fabric by impregnation. There are currently two impregnation methods, one is Immerse the non-woven fabric in a certain concentration of silver ion solution, take it out after the silver ions are adsorbed on the non-woven fabric, dry it and dry it, and then get the silver-loaded non-woven fabric. The disadvantages of this method are: 1) non-woven fabric The concentration of silver ions on the cloth cannot be determined; 2) the binding force between silver ions and non-woven fabrics is not good, and it is easy to fall off, which cannot guarantee better antibacterial and antiviral effects; the other is to impregnate non-woven fabrics with silver ions and organic In the mixed solution of reducing agent, silver ions are reduced and precipitated into silver atoms on the non-woven fabric under the action of the reducing agent, and then enriched, and after drying, the silver-plated non-woven fabric is obtained.

The disadvantages of this method: 1) the silver concentration on the non-woven fabric cannot be determined; 2) the organic reducing agent has a problem of poor dispersion, so the silver-plated layer on the non-woven fabric also has the problem of uneven dispersion; 3) the organic reducing agent And silver ions will be adsorbed on the non-woven fabric, which will cause shedding problems, and this coating cannot guarantee good antibacterial and antiviral effects

[0005] The Chinese patent with the application number CN201821879842.9 discloses a silver-plating device for silver-plating fibers. In order to increase the adhesion of silver ions, it is mainly carried out by passing the fiber filaments through a certain concentration of pressurized silver solution. Silver plating, drying and winding after the silver ions are adsorbed on the fiber, the silver-plated fiber can be obtained. This silver-plating method has the disadvantages that the thickness of the silver coating cannot be controlled and the silver-plating efficiency is low. Although it is suitable for fiber Silver plating, not fabric, silver plating from the source, the final silver fiber fabric obtained has more silver ion adhesion, but it is easy to rub off the silver plating on the fiber filament in the subsequent prevention process

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