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Bamboo chitosan functional dressing and preparation method thereof

A chitosan and functional technology, applied in the field of medical supplies, can solve the problems of poor healing effect and easy breeding of bacteria in wounds, so as to prevent wound infection, facilitate wound healing, and increase strength

Active Publication Date: 2015-03-04
ZHEJIANG AOLIN MEDICAL ARTICLES
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] One of the purposes of the present invention is to provide a bamboo chitosan functional dressing which has good air permeability and can effectively inhibit bacteria in order to solve the problems of easy breeding of bacteria in the wound, poor healing effect, and the need to use drugs when the existing dressing is used. , quickly absorb the liquid exuded from the wound, maintain a microenvironment with appropriate humidity at the wound, which is conducive to wound healing and can also quickly stop bleeding

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] A kind of bamboo chitosan functional dressing, the overall weight is 60g / m 2 , including the following raw materials by weight: 1 weight part of chitosan fiber, 3 weight parts of bamboo fiber and 2 weight parts of viscose fiber, and the chitosan deacetylation degree of chitosan fiber is 100%.

[0035] The preparation method of the above-mentioned functional dressing comprises the following steps: (1) mixing and opening for the first time: mixing bamboo fiber and viscose fiber, and then opening to obtain the initially mixed fiber; mixing and opening for the second time: Add chitosan fiber to the primary mixed fiber for mixing, and then open again to obtain mixed fiber; (2) The mixed fiber is sent to a carding machine for carding and initial carding, followed by fine carding. The speed is greater than the cylinder speed during combing; the cylinder speed during initial carding is 500 / r.min -1 , the cylinder speed during combing is 300 / r.min -1 ; (3) laying the carded mi...

Embodiment 2

[0037] A bamboo chitosan functional dressing, the overall weight is 180g / m 2 , including the following raw materials by weight: 2 parts by weight of chitosan fiber, 7 parts by weight of bamboo fiber and 5 parts by weight of viscose fiber, the chitosan deacetylation degree of chitosan fiber is 90%.

[0038] The preparation method of the above-mentioned functional dressing comprises the following steps: (1) mixing and opening for the first time: mixing bamboo fiber and viscose fiber, and then opening to obtain the initially mixed fiber; mixing and opening for the second time: Add chitosan fiber to the primary mixed fiber for mixing, and then open again to obtain mixed fiber; (2) The mixed fiber is sent to a carding machine for carding and initial carding, followed by fine carding. The speed is greater than the cylinder speed during combing; the cylinder speed during initial carding is 400 / r.min -1 , the cylinder speed during combing is 350 / r.min -1 ; (3) Lay the carded mixed f...

Embodiment 3

[0040] A kind of bamboo chitosan functional dressing, the overall weight is 150g / m 2 , including the following raw materials by weight: 1.5 parts by weight of chitosan fiber, 5 parts by weight of bamboo fiber and 3 parts by weight of viscose fiber, the chitosan deacetylation degree of chitosan fiber is 95%.

[0041] The preparation method of the above-mentioned functional dressing comprises the following steps: (1) mixing and opening for the first time: mixing bamboo fiber and viscose fiber, and then opening to obtain the initially mixed fiber; mixing and opening for the second time: Add chitosan fiber to the primary mixed fiber for mixing, and then open again to obtain mixed fiber; (2) The mixed fiber is sent to a carding machine for carding and initial carding, followed by fine carding. The speed is greater than the cylinder speed during combing; the cylinder speed during initial carding is 450 / r.min -1 , the cylinder speed during combing is 300 / r.min -1 ; (3) laying the c...

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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...

Claims

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Application Information

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IPC IPC(8): A61L15/40A61L15/28A61L15/44
Inventor 鲁志立
Owner ZHEJIANG AOLIN MEDICAL ARTICLES
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