Preparation method of activated carbon fiber net of air purifier

Abstract

The invention relates to the technical field of auxiliary parts of an air purifier, and particularly relates to an activated carbon fiber net of an air purifier and a preparation method of the activated carbon fiber net. The activated carbon fiber net comprises a filter core and a filter frame, wherein the filter core is in a barrel shape or a plate shape; the filter core is adhered to the filter frame; the filter core comprises an upper nonwoven fabric layer, at least two layers of activated carbon filter layers and a lower nonwoven fabric layer; the upper nonwoven fabric layer, at least one layer of activated carbon filter layer and the lower nonwoven fabric layer are orderly laminated; the activated carbon fiber layer comprises a polymer support net and a mixing layer composed of an adhesive fiber in a molten state and activated carbon; the polymer support net is adhered to the mixing layer; the dosage of the adhesive is low; a microcellular structure at the surface of the activated carbon is hardly affected; the adsorptive property is not affected; the activated carbon is evenly distributed in the overall filter net, is fully contacted with air during use; the filter resistance is uniform; a drift phenomenon does not exist; the adsorption and filtration efficiency is high.

Description

Technical field: [0001] The invention relates to the technical field of auxiliary parts of an air purifier, in particular to an activated carbon filter screen of an air purifier and a preparation method thereof. Background technique: [0002] Air purifiers are becoming more and more popular and have gradually become a part of daily household appliances. The filter is the core of the purifier, and the structure of the filter directly affects the efficiency of the purifier. At present, the activated carbon filter screen of the purifier mainly has the following types. The first type: use PP or PE honeycomb net, fill with 10*30 mesh irregular granular activated carbon, and then cover it with non-woven fabric reinforcement net, wrap it with paper frame, heat Melt adhesive bonding; the second type: use PP or PE honeycomb mesh, fill columnar granular activated carbon, and then cover with non-woven reinforcement mesh, wrap the edge with paper frame, and bond it with hot melt adhesiv...

AI Technical Summary

Problems solved by technology

At present, the activated carbon filter screen of the purifier mainly has the following types. The first type: use PP or PE honeycomb net, fill with 10*30 mesh irregular granular activated carbon, and then cover it with non-woven fabric reinforcement net, wrap it with paper frame, heat Melt adhesive bonding; the second type: use PP or PE honeycomb mesh, fill columnar granular activated carbon, and then cover with non-woven reinforcement mesh, wrap the edge with paper frame, and bond it with hot melt adhesive; these two The method uses the honeycomb mesh as the support body, and it is difficult to fill the activated carbon evenly in the honeycomb mesh. When in use, the air resistance of each honeycomb mesh is different, and it is easy to form air drift, insufficient contact and filtration, and affect the use effect.

The third method: with the help of high-foaming through-hole polyester sponge or PU sponge as the carrier, the granular activated carbon is loaded on the carrier with a binder to form a foam activated carbon block. A large amount of binder is required in the bonding process to strengthen the activated carbon. The bonding between particles or activated carbon and the carrier, but a large amount of adhesive is coated on the surface of activated carbon, which seriously blocks the microporous structure of activated carbon and seriously affects the adsorption and filtration function of activated carbon

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