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Application expansion of PP spunbond non-woven fabrics

by:XINYU Non-woven     2022-01-18

PP spunbond non-woven fabrics such as spunlace medical protective clothing, PP disposable spunbond protective clothing and SMS medical protective clothing, etc. At present, the development of new products in this field includes two aspects: one is the new expansion of existing materials in the field of clothing applications; the other is the development of new non-woven fabrics.

I. Non-durable impregnated non-woven fabric for clothing

PP spunbond non-woven fabric is a composite product of spunbond and meltblown, with high strength, good filtration performance, no The advantages of containing adhesives and non-toxicity have already played an important role in the field of medical and industrial filter materials. The latest application is to use the characteristics of SMS to be breathable, not to generate fiber dust, and to prevent the human body from exchanging particles with the outside world. Pharmaceuticals, bioengineering, optoelectronic processing, electrical components and chips, etc. require highly clean production environments. Spunbond non-woven fabrics are composed of high-strength continuous filaments, which occupy a large proportion in the disposable protective clothing market. It has the functions of flame retardant, antistatic, radiation protection, hydrophobicity and moisture conduction, antibacterial, and warmth retention.

PP spunbond non-woven fabric In the development of new fibers, water-soluble non-woven fabric is a product, and its application range is gradually expanding. Using polyvinyl alcohol water-soluble fiber to produce spunlace non-woven fabric is a good material for making anti-radiation and anti-pollution clothing. In order to increase the protective effect, it can also be compounded with a water-soluble film to increase the barrier performance of the protective clothing. In addition, in the use of new fibers, foreign countries have also developed the technology of adding superabsorbent fibers (SAF) in the production process of non-woven fabrics. The non-woven fabric containing SAF has a particularly good soft feel and water absorption properties, and can quickly absorb the sweat of the human body when worn as a close-fitting underwear, increasing the comfort of the microenvironment between the clothing and the human body.

PP spunbond non-woven fabric In the development of new composite non-woven materials, a new type of cotton fiber composite non-woven fabric has been developed in the United States. The surface layer is a thermally bonded non-woven fabric of cotton and polypropylene fibers. , and spunbond fabric to form a two-layer or three-layer composite material, the product feels similar to pure cotton knitted fabric, and has the advantages of good strength and elongation, water absorption and water retention, fast wicking speed, and low pilling performance. After finishing, the instantaneous elastic recovery rate can reach 83% to 93% when the elongation is 50%, which is suitable for making medical isolation clothing and disposable underwear. In addition, the new generation of biochemical protective clothing developed by the US military makes full use of the advantages of woven, knitted and non-woven fabrics. The outer layer of the protective clothing is tear-resistant nylon/cotton fiber poplin, which has been treated with water repellency; the lining is a tape Nonwoven with activated carbon; inner layer is tricot. Compared with the existing protective clothing, this kind of clothing provides military personnel with special chemical protection, while increasing the lightness of the clothing, reducing the cost, and can withstand at least 3 washings. 1. The stability is better than that of polypropylene non-woven fabrics

PP spunbond non-woven fabrics are mainly manifested in: strength, wear resistance and other properties. Because polyester non-woven fabrics are made of special raw materials, they are made by advanced imported equipment and complex and scientific processing technology, which has far exceeded the technical content and requirements of polypropylene non-woven fabrics.

Second, the heat resistance is better than polypropylene non-woven fabrics

Polypropylene non-woven fabrics have obvious heat shrinkage. According to investigation, when the temperature reaches 140 ℃, there will be obvious shrinkage , while the temperature of polyester non-woven fabrics can reach about 230 ° C, which has obvious characteristics compared with polypropylene non-woven fabrics.

Third, the anti-aging cycle is higher than that of polypropylene non-woven fabrics

Polyester non-woven fabrics use polyester as raw material, which is resistant to insects, abrasion and ultraviolet rays. The above characteristics are higher than Polypropylene non-woven fabric.

Fourth, has good air permeability

Compared with polypropylene and other non-woven fabrics, polyester non-woven fabrics have excellent properties such as non-absorbent, intolerant of water, and strong air permeability.

The first is the difference in raw materials: PP refers to polypropylene, namely polypropylene; PET refers to polyester, namely polyethylene terephthalate.

Secondly, these two kinds of non-woven fabrics are quite different in application, but they can replace each other in some aspects. It's just a difference in performance.

In addition, in the way of production and processing, these two have the same and different. Different processing methods determine the application in most cases.

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