Do you know that polypropylene is lighter than water?
Polypropylene is the name of polypropylene fiber produced in China. This fiber was invented by the Italian Nata in 1955 and did not enter industrial production until 1960. Among the many synthetic fibers, polypropylene belongs to the "young generation." Polypropylene has a specific gravity of only 0.92, which means that clothes made with it can float on the water without sinking. Although polypropylene is "frivolous", the body is very strong. The biggest advantage of this fiber is that it has abundant raw materials and is relatively simple to produce, so it has low cost and has development value. Is polypropylene "cheap" "material"? It is "beautiful" in terms of warmth, fluffiness and chemical resistance. However, the light resistance is very bad and it is easy to age. Secondly, the heat resistance is also poor. Even more troublesome is that dyeing is not easy and it is difficult to dye well. Another disadvantage of polypropylene is that it feels bad and does not have the "fashion" like polyester. Later, people mixed it with cotton, and all of the above shortcomings have been improved to some extent, but the proportion in the consumer market is still not large. In recent years, with the advancement of technology, it has been found that when its linear density is reduced to less than 0.2 tex, it has a special core absorption effect that can be wetted, and it is used to make the underwear not stick to the skin when sweating. Many people hope that such underwear should also have good comfort. In fact, the hygroscopicity and moisture permeability of the fiber are not equal. Whether such goods can be accepted by consumers remains to be verified. Silver Yarn,Gold Metallic Yarn,Sparkle Yarn Metallic,Yarn With Metallic Thread YIBIN SUNLAND TRADING CO.,LTD. , https://www.markfil.com