Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Manufacturing method of composite medical non-woven fabric absorbent pads

A non-woven and composite technology, applied in absorbent pads, applications, clothing, etc., can solve problems such as unreasonable structure, wound adhesion, etc., to reduce the contact area, avoid the skin, and shorten the treatment time.

Active Publication Date: 2014-03-26
SUZHOU EMY MEDICAL SUPPLIES
View PDF22 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Another example is that the "medical applicator" provided by CN202136483U and the "medical non-woven pad towel" introduced by CN201642330U also have the risk of sticking to the wound during use due to their unreasonable structure.

Method used

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
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Manufacturing method of composite medical non-woven fabric absorbent pads

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] See figure 1 , provides a medical non-woven absorbent pad, which has the following structure: including an anti-adhesion layer 1 for contacting a patient's wound (also called a "wound") in use, and a waterproof pad facing outwards in use. Air-permeable layer 2 and liquid-absorbent layer 3 between anti-adhesion layer 1 and waterproof breathable layer 2, the steps of preparing the medical non-woven absorbent pad of this structure are as follows:

[0021] A) Prepare the anti-adhesion layer, put the medical non-toxic grade polyethylene (English abbreviation "PE") pellets into the screw extruder for melt extrusion, wherein: the melting temperature during melt extrusion is 125 °C, and the screw extrusion After machine melting and extrusion, the film is formed by casting film forming method, rolling out the anti-adhesion hole 11, cooling and winding to obtain the medical non-toxic grade polyethylene film as the anti-adhesion layer 1, the medical non-toxic grade polyethylene fi...

Embodiment 2

[0026] Only change the melting temperature in step A) to 110°C, change the weight of the anti-adhesion layer 1 to 20g / ㎡, and change the side length of the anti-adhesion hole 11 to 0.4mm; change the weight of the viscose fiber in step B) Change the parts by weight to 90 parts, change the parts by weight of the superabsorbent fiber to 10 parts, change the acupuncture frequency of the acupuncture machine to 650 pricks / min, and change the gram weight of the liquid-absorbent layer 3 to 300 g / ㎡; Change the melting temperature in step C) to 110°C, change the thickness of the waterproof and breathable layer 2 to 0.04mm; change the compounding temperature in step D) to 120°C. The obtained medical non-woven absorbent pad is suitable for post-operative application, and the rest are the same as those described in Example 1.

Embodiment 3

[0028] Only change the melting temperature in step A) to 120°C, change the gram weight of the anti-adhesion layer 1 to 18g / ㎡, and change the side length of the anti-adhesion hole 11 to 0.25㎜; change the viscose fiber in step B) to Change the parts by weight to 50 parts, change the parts by weight of the superabsorbent fiber to 50 parts, change the acupuncture frequency of the acupuncture machine to 800 pricks / min, and change the gram weight of the liquid-absorbent layer 3 to 200 g / ㎡; Change the melting temperature in step C) to 120°C, change the thickness of the waterproof and breathable layer 2 to 0.03mm; change the compounding temperature in step D) to 115°C. The obtained medical non-woven absorbent pad is suitable for post-operative application, and the rest are the same as those described in Example 1.

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
Login to View More

PUM

No PUM Login to View More

Abstract

The invention relates to a manufacturing method of composite medical non-woven fabric absorbent pads and belongs to the field of preparation of medical dressing. The manufacturing method includes steps of feeding medical non-toxic polyethylene particles into a screw extruder to fuse and extrude, forming a film through curtain coating, rolling to form anti-adhesive holes, cooling and winding to obtain a medical non-toxic polyethylene film used as an anti-adhesive layer; subjecting blended fibers blended by viscose fibers and high-absorbent fibers to opening by an opener, carding by a carding machine, lapping by a lapping machine and needling by a needle machine, and obtaining non-woven fabric used as a liquid absorbent layer; feeding polyurethane particles into the screw extruder to fuse and extrude, and forming a film by curtain coating, cooling and winding to obtain a polyurethane film used as a waterproof breathable layer; subjecting the anti-adhesive layer and one surface of the liquid absorbent layer to thermal compositing, and subjecting the waterproof breathable layer and the other surface of the liquid absorbent layer to thermal compositing to obtain a composite medical non-woven fabric absorbent pad. The manufacturing method of the composite medical non-woven fabric absorbent pads has the advantages that liquid absorbent quantity is high, leakage to the outside is prevented, contact area of the skin can be remarkably decreased, handling time of medical staff can be shortened, and technical steps are few.

Description

technical field [0001] The invention belongs to the technical field of preparation of medical dressings, and in particular relates to a preparation method of a composite medical non-woven absorbent pad. Background technique [0002] In people's daily life, they often encounter various types of bleeding trauma. For small wounds, band-aids are directly applied to the wounds. For large wounds, the wounds need to be cleaned and disinfected by the medical staff of the hospital, and then wrapped with gauze, or pasted with various class applicator. But the dressings in the prior art such as Band-Aid, gauze or application tend to leak through the gauze or application when the wound bleeding is large, especially, when the wound heals, it is easy to adhere to the dressings such as gauze. Then, when the wound is healed and the gauze is removed, it will cause pain to the patient and even lead to secondary bleeding. [0003] There is no lack of technical information on medical dressin...

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
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): A61F13/15
Inventor 周立新
Owner SUZHOU EMY MEDICAL SUPPLIES
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com