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poy：预取向丝
full name: pre - oriented yarn or partially oriented yarn.
a chemical filament obtained by high speed spinning with the orientation between an unoriented filament and a drawn filament that is not fully drawn. compared with undrawn silk, it has a certain degree of orientation and good stability, and is often used as a special wire for drawing false twist deformed silk (dty).
poy is mainly used for post-processing production, such as production of dty, dt and aty, and can also be directly applied to the silk textile industry.
fdy
full draw yarn
it has nothing to do with the production process, but it is widely spread now, as the code name of the one-step spinning and drawing process,
can be directly used for textile processing. fdy civil silk, specially used for water jet, air jet, warp knitting, knitting production of various clothing, decorative fabrics, lining, plush, etc.
sea-island filament
ultra-fine or ultra-fine fibers made by composite spinning technology are firstly coated with soluble substances in addition to ultra-fine insoluble substances, forming numerous bundles of island-like structures.
island fiber is called island silk because of its cross-section shape, which is mainly used for weaving suede. it has good light fastness and can be dyed with a dye.
dty
full name: draw textured yarn
poy is used to make raw silk, which is processed by stretching and false twist deformation. there is often a certain degree of elasticity and shrinkage. dty is the ideal material for knitting (weft knitting, warp knitting) or machine knitting.
appropriate to make clothing fabrics (such as suits, shirts), bedding (such as bedding, bedspread, mosquito net) and decorative supplies (such as curtain cloth, sand release, paste wall cloth, car interior decorative cloth).
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