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Dressing, dressing film layer and preparation method thereof

A film layer and slurry technology, applied in bandages, absorbent pads, medical science, etc., can solve problems such as low fiber strength and low production efficiency of dressings

Active Publication Date: 2021-05-11
CHINESE TEXTILE ACAD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In view of this, the present invention provides a dressing, a dressing film and a preparation method thereof. The main technical problem to be solved is that the strength of the fiber prepared by the electrospinning method is not high, and the production efficiency of the dressing prepared by the weaving process is low.

Method used

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Examples

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Effect test

preparation example Construction

[0036] A kind of preparation method of dressing film layer that one embodiment of the present invention proposes, it comprises:

[0037] Choose the sodium carboxymethyl cellulose fiber of predetermined range length l;

[0038] Wherein, the size of the length l in the predetermined range may be greater than or equal to 1 mm and less than or equal to 15 mm, such as sodium carboxymethyl cellulose fibers of 3 mm to 10 mm, and the preferred length is 4 mm to 6 mm.

[0039] Mix the sodium carboxymethyl cellulose fiber of the first mass part m1, the bonding polymer resin of the second mass part m2, and the organic solvent of the third mass part m3 to form a slurry, wherein the bonding polymer The resin is soluble in the organic solvent to form an adhesive; the organic solvent includes one of ethanol, ether, isopropanol, acetone, dimethylacetamide, tetrahydrofuran, ethyl acetate, and dichloromethane. Adhesive macromolecular resin is soluble in described organic solvent, and described...

Embodiment 1

[0054] Use 3g of sodium carboxymethyl cellulose fiber with a length of 6mm, add it in ethyl acetate solvent, the ratio of sodium carboxymethyl cellulose fiber to ethyl acetate is 1:50, and beat in a high-speed stirring device, the beating speed It is 25000r / min, and the beating time is 10min to form a slurry. Polylactic acid resin was added to ethyl acetate to prepare adhesive, and the mass ratio of polylactic acid resin to sodium carboxymethyl cellulose fiber was 1:50. Mix the slurry and binder and continue to add ethyl acetate solvent until the mass ratio of sodium carboxymethyl cellulose fiber and ethyl acetate solvent is 1:1500, stir at high speed, the stirring speed is 15000r / min, and finally use 10cm 2 The circular gauze net is used to make it into a film, the thickness is 280μm, and the weight is 30g / m 2 .

Embodiment 2

[0056] Use 5g of sodium carboxymethyl cellulose fiber with a length of 6mm, add it in ethyl acetate solvent, the ratio of sodium carboxymethyl cellulose fiber to ethyl acetate is 1:70, and beat in a high-speed stirring device, the beating speed It is 20000r / min, and the beating time is 12min to form slurry. Add polylactic acid resin to ethyl acetate to prepare adhesive, and the mass ratio of polylactic acid resin to sodium carboxymethyl cellulose fiber is 1:60. Mix the slurry and binder and continue to add ethyl acetate solvent until the mass ratio of sodium carboxymethyl cellulose fiber and ethyl acetate solvent is 1:2000, stir at high speed, the stirring speed is 13000r / min, and finally use 10cm 2 The square gauze mesh is used to make it into a film, the thickness is 500μm, and the weight is 50g / cm 2 .

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Abstract

The invention relates to a dressing, a dressing film and a preparation method thereof, and relates to the technical field of dressings. The main technical problems to be solved are that the strength of the fibers prepared by the similar electrospinning method is not high, and the production efficiency of the dressings prepared by the weaving process is low. The technical scheme mainly adopted is: the preparation method of the dressing film layer, comprising: selecting the sodium carboxymethyl cellulose fiber of predetermined range length l; The polymer resin for bonding and the organic solvent of the third mass part m3 are mixed to form a slurry, wherein, the polymer resin for bonding is soluble in the organic solvent to form an adhesive; the slurry is formed in Prepare and shape the dressing film layer on gauze. Compared with the prior art, the dressing film layer has higher strength, simple manufacturing process, convenient thickness adjustment, no surgical suturing, simple use, increased use safety, and can reduce pain and discomfort of patients.

Description

technical field [0001] The invention relates to the technical field of dressings, in particular to a dressing, a dressing film and a preparation method thereof. Background technique [0002] Dressing is an important auxiliary material in modern medicine, mainly used in wound healing and skin lesion healing. Fitting the dressing on the wound can resist mechanical factors (such as dirt, impact, inflammation, etc.), resist pollution and chemical irritation, prevent secondary infection, prevent dryness and loss of body fluids (electrolyte loss), and prevent heat loss, in addition to In addition to comprehensive protection of the wound, it can also actively affect the wound healing process through debridement and create a microenvironment that promotes wound healing. [0003] For example, carboxymethylcellulose sodium (also known as: carboxymethylcellulose sodium salt, carboxymethylcellulose, CMC for short) wet dressing is a commonly used new dressing, which has the ability to a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61L15/28A61L15/26A61L15/42
CPCA61L15/225A61L15/42C08L1/286C08L67/04
Inventor 崔华帅史贤宁吴鹏飞黄庆
Owner CHINESE TEXTILE ACAD
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