A kind of bamboo original chitosan functional dressing and preparation method thereof

Abstract

The invention relates to a bamboo chitosan functional dressing comprising bamboo fibers and chitosan, and a preparation technology for the dressing. The preparation technology comprises the following steps: (1) mixing and opening; (2) combing; (3) lapping; (4) pre-needling, wherein the pre-needling adopts oblique needling, and the needling angle of the oblique needling is 20-30 degrees; (5) needling of composite fiber net after the pre-needling to obtain dressing primary product; (6) pressing of the dressing primary product to obtain the dressing; (7) winding. The bamboo chitosan functional dressing adopts the bamboo fibers as a frame; the chitosan fibers are uniformly distributed on the frame; viscose fibers are utilized to strengthen adhesion; the component fibers form an integrative non-woven fabric structure without being layered by needling; the non-woven fabric structure is firmer, high in intensity and more durable; the chitosan fibers and the bamboo fibers are intersected complexly, and permeate mutually; the efficacy function of the fibers is more permanent; medicine smeared on the inner surface of a dressing in a conventional manner is easy to drop or be rubbed off; the dressing has no burr on edge.

Description

technical field

[0001] The invention relates to a dressing and a preparation process thereof, in particular to a bamboo chitosan functional dressing containing bamboo fiber and chitosan and a preparation process thereof, belonging to the technical field of medical supplies. Background technique

[0002] Wounds after injury or surgery need to be treated with dressings to absorb excess exudate from the wound and allow the wound to heal quickly. However, the existing dressings have some shortcomings: when there is too much exudate, the water-absorbing layer cannot completely absorb it, and it will seep again from the water-absorbing layer, causing the skin at the wound to be soaked and softened, the healing speed is slow, and even ulceration occurs , greatly increased the suffering of the wounded, for this reason, a large number of improved dressings have emerged one after another, as the Chinese patent No. CN203662986 disclosed a new type of foam composite wound dressing on Ju...