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Fabric Knowledge Introduction Part Two
Add time:2020-09-23
Fabric Knowledge Introduction Part Two

1、POY、FDY、DTY

The polyester we usually use is dim.
 
POY is commonly known as raw silk, because FDY and DTY are its post-processed products.
 
FDY is made by POY by stretching heating.
 
DTY is formed by STRETCHing and then falsely stylating.
 
For example, POY is like a wet noodle, FDY is to stretch the noodles and then stereotype, DTY is to add a bend, like instant noodles.
 
Because FDY is stretched on the basis of POY, so the large molecules inside are relatively arranged more regular and tight, after the stereotype has a certain crystallization, semi-crystallization state.
 
After DTY secondary stylation, the arrangement is more tightly crystalline.