3075 Spandex Yarn

3075 Spandex Yarn

Description : 3075 spandex yarn
Type : 3075
Chemical Component : 30% spandex and 70% polyester
Covering : 75D DTY
Color : Muti-color
Process : SCY
Pattern : core spun yarn
Packing : 8 cones/carton , others depend on customer requirements
Delivery time : 15 days
Payment type : 30% deposit ,balance before shipment Using : weaving, corsetry, webbing, socks, swimwear Specialty : Yarn evenness, high tenacity, fluffy, generally mix with other thread to improve elasticity

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Product Details

Description : 3075 spandex yarn

Type : 3075

Chemical Component : 30% spandex and 70% polyester

Covering : 75D DTY 

Color : Muti-color

Process : SCY

Pattern : core spun yarn

Packing : 8 cones/carton , others depend on customer requirements 

Delivery time : 15 days

Payment type : 30% deposit ,balance before shipment

Using : weaving, corsetry, webbing, socks, swimwear

Specialty : Yarn evenness, high tenacity, fluffy, generally mix with other thread to improve elasticity


Polyurethane wrapped yarn twist Science

There is an important technological parameter of mechanical spandex coated yarn, which affects yarn quality, strength and evenness.Increasing twist can increase the cohesion between polyester and polyurethane filaments, and increase the strength of the coated yarn.Too low twist, loose polyester outsourcing, affecting the coating effect, the appearance of core-exposed phenomenon, so the mechanical coating should be on the high side of the twist.But the twist is too high, the fabric feels hard and the drape is poor.The general twist should be adjusted accordingly with the change of the denier number of the yarn and the style requirement of the fabric.For example, the twist of N40D+20D package is about 600 twists, while that of N70D+40D or T150D+40D package is about 480.The elongation of the machine package is also mainly determined by the properties of the spandex core filament. Too much twist and too close coating of the outer polyester filament make the elastic effect of the spandex filament not fully exerted, which reduces the elongation.The evenness of the evenness was improved with the increase of twist.The twist is too small and the outer polyester is loose. During the spinning process, because of friction and other reasons, the fibers will move slightly along the yarn axis, so the yarn evenness will deteriorate.


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