Manufacturing method of composite medical non-woven fabric absorbent pads
A non-woven, composite technology, used in absorbent pads, applications, clothing, etc., can solve problems such as unreasonable structure, wound adhesion, etc., and achieve the effect of reducing contact area, avoiding skin, and fewer process steps.
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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 postoperative 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 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 weight of the viscose fiber in step B) 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 postoperative application, and the rest are the same as those described in Example 1.
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