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Medical Nonwoven Fabric Making Raw Materials

Yiwu Guanghong Non-Woven Co.,Ltd | Updated: Oct 31, 2017

Medical non-woven fabrics refers to the chemical treatment of fat removal of cotton, easy to absorb liquid than ordinary cotton, is a health supplies, but also used to make nitrocellulose. Also known as cotton wool. From the original cotton by removing inclusions, degreasing, bleaching, washing, drying, finishing processing made. Absorbent cotton should be odorless, tasteless, no stains, with good water absorption, fiber soft and slender, white and flexible, easy to layer, no acid, alkali and other harmful impurities, the quality should be in line with the Ministry of Health to develop technical standards. Absorbent cotton is made by degreasing process, because the surface does not contain fat, have a good hydrophilic, soaked in 75% alcohol can be used for disinfection of cotton balls.

Production of raw materials and methods

Raw materials of the most advanced cotton, caustic soda (NaOH, industrial), water.

Method to tear the cotton, pick out the impurities can be seen, such as small stones, dead leaves and so on. Wash the cotton with water until the effluent is clear. The cotton installed in the enamel pot, add water to just be submerged, and then add to the pot equivalent to the water weight of 2% to 5% of the NaOH, add a small simmer for 10 minutes. Cooling, rinse with plenty of water, about to wash while rubbing for 10 minutes. Wash the clean cotton paper on the clean paper.

Note that the alkali (NaOH) is highly corrosive and must wear gloves and plastic around the waist, dip on the skin should be washed immediately. Cook the time not too long, so as not to reduce the degree of polymerization, affecting the esterification. When dry, pay attention to dust.

Currently on the market of non-woven fabrics are generally divided into medical non-woven fabrics and ordinary non-woven fabrics, then the use of non-woven fabrics in hospitals, and ordinary non-medical non-woven fabrics, in the end what are the differences?

1. The effect of resistance to bacteria

Excellent medical non-woven fabrics, the general need to use smmms three layers of meltblown layer structure, the industry's ordinary medical non-woven use of SMS single-layer meltblown layer structure, in contrast, the three-layer structure of the antibacterial properties, To be better than the structure of a single layer. Rather than medical ordinary non-woven fabrics, the middle and no meltblown layer, and can not be anti-bacterial effect.

2. A variety of sterilization compatible

Excellent medical non-woven fabrics, need to apply to a variety of sterilization methods, preferably pressure steam, ethylene oxide, hydrogen peroxide, three kinds of sterilization methods, can be used at the same time. And ordinary non-medical non-woven fabrics, can not be sterilized.

3. Strict quality control

Excellent medical non-woven fabrics, the production process through the ISO13485 international medical product quality control system certification, in the production process every step of the real-time online inspection. This can help each piece of non-woven fabrics sent to the hospital, have the relevant batch inspection report. While the ordinary non-medical non-woven fabrics, do not need to reach the medical level test.

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