Method for preparing multi-layer composite functional surgical dressing

A multi-layer composite and functional technology, applied in viscous dressings, dressings, medical science, etc., can solve the problems of non-covering wound protection, repeated wound damage, limited bonding strength, etc., to prevent wound fluid infection, Good biocompatibility, the effect of avoiding direct contact
CN103239755AInactive Publication Date: 2013-08-14DONGHUA UNIV +1
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
DONGHUA UNIV
Publication Date
2013-08-14
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention relates to a method for preparing a multi-layer composite functional surgical dressing. The method comprises the following steps: respectively and independently carding the fiber layers comprising a functional layer which is formed by mixing chitosan fiber or chitosan fiber and viscose and is directly contacted with the skin, a water-absorbing layer which is made of viscose and has high liquid absorption performance and a protective layer which is formed by mixing the viscose and polyester fiber and has the supporting and protecting functions so as to form a net, manufacturing a three-layer laminate with an upper functional layer, a middle water-absorbing layer and a lower protective layer by employing a water jet strengthening technology, coating a waterproof agent on the protective layer of the three-layer laminate to form a waterproof layer, and finally rolling to obtain the surgical dressing. The product has high biocompatibility and promotes healing, the antibacterial rate is up to 96.7 percent, the liquid absorption rate is 1259 percent, the waterproofing grade is up to level 5, and the surgical dressing can be used for clinical repair for operative incision, burn, scald, ulcer and other skin injury and is simple in production process, low in cost and environmentally-friendly.
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Description

technical field

[0001] The invention belongs to the field of medical dressings, in particular to a preparation method of a multilayer composite functional medical dressing. Background technique

[0002] At present, for skin injuries caused by trauma, abrasions, burns, surgical incisions, diabetic ulcers, and varicose ulcers, care products mainly include degreasing gauze, petroleum jelly gauze, saline wet gauze or non-stick film. These sterile products are widely used in the medical industry, but there are some defects: dry gauze is easy to stick to the wound; Damaged, long-term failure to heal, and even secondary infection. In order to make medical dressings have antibacterial properties, scholars at home and abroad have conducted a lot of research, which are summarized as follows:

[0003] A composite nano-antibacterial medical dressing (patent CN1537640A), the antibacterial layer is composed of spunlace non-woven fabric or carbon fiber adsorption material containing Ag ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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