Non-woven fabric hot melt adhesive tape as well as coating method and coating device thereof

Abstract

The invention relates to a coating method of a non-woven fabric hot melt adhesive tape. The coating method comprises the following steps: (1) recombining for the first time: enabling release paper A and release paper B to be recombined together by utilizing hot melt adhesive, and preserving heat to enable the hot melt adhesive to keep a fluid state, wherein the release force between the release paper B and the hot melt adhesive is less than the release force between the release paper A and the hot melt adhesive; (2) peeling off the release paper B: peeling off the release paper B and the hot melt adhesive to enable one side of the hot melt adhesive to be exposed to become a to-be-recombined surface; (3) recombining for the second time: enabling non-woven fabric and the to-be-recombined surface of the hot melt adhesive to be recombined, cooling simultaneously to enable the hot melt adhesive to be solidified so as to obtain the non-woven fabric hot melt adhesive tape; and (4) rolling-up: rolling-up the obtained non-woven fabric hot melt adhesive tape. The invention further discloses a coating device of the non-woven fabric hot melt adhesive tape, and the obtained non-woven fabric hot melt adhesive tape has the following characteristics: (1) by enabling the hot melt adhesive and the non-woven fabric to be combined together, the dressing meets hydroscopicity and air permeability simultaneously; and (2) as the hot melt adhesive is recombined on the non-woven fabric, not only is the hot melt adhesive difficult to peel off, but also adhesive overflowing cannot happen.

Description

technical field [0001] The invention belongs to the technical field of coating, in particular to a non-woven hot-melt adhesive tape, a coating method and a coating device thereof. Background technique [0002] Wounds place high demands on the water absorption and air permeability of the dressing. Dressings on the market are either absorbent but lack air permeability, or breathable but lack water absorption. It is difficult to meet both water absorption and air permeability requirements, especially air permeability. Most of the base materials of hot melt adhesive dressings on the market are polyurethane films and PE films, which have poor air permeability. [0003] Non-woven fabric, also known as non-woven fabric, is composed of directional or random fibers. It is a new generation of environmentally friendly materials. It is called cloth because of its appearance and certain properties. Non-woven fabrics have the characteristics of moisture-proof, breathable, flexible, ligh...

AI Technical Summary

Problems solved by technology

[0015] In view of this, in order to solve the problems existing in the existing hot-melt adhesive and non-woven fabric coating process, the object of the present invention is to provide a kind of non-woven hot-melt adhesive tape and its coating method and coating device

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