Polyester filament is made of polyester as long filament, and polyester is an important variety in synthetic fibers. It is made of purified terephthalic acid (PTA) or dimethyl terephthalate (DMT) and ethylene glycol (MEG) as raw materials, polyester thermal fuse through esterification or transesterification and polycondensation reaction. Fiber polymer-polyethylene terephthalate (PET), fiber made by spinning and post-processing. The so-called polyester filament is a filament with a length of more than one kilometer, and the filament is wound into a group.

1. The characteristics of polyester filament

Strength: The strength of polyester fiber is nearly 1 times higher than that of cotton and 3 times higher than that of wool, so the polyester fabric China polyester filament yarns Manufactureris strong and durable.

Heat resistance: It can be used at -70°C~170°C, which has good heat resistance and thermal stability among synthetic fibers.

Elasticity: The elasticity of polyester is close to that of wool, and its wrinkle resistance is better than other fibers. The fabric is not wrinkled and has good shape retention.

Abrasion resistance: The abrasion resistance of polyester is second only to nylon and ranks second among synthetic fibers.

Water absorption: Polyester has low moisture regain and good insulation performance. However, due to low water absorption, high static electricity generated by friction, and poor natural absorption of dyes, polyester is generally dyed with high temperature and high pressure dyeing.

Dyeability: Polyester fiber itself lacks hydrophilic groups or dye acceptor parts, so the dyeability of polyester fiber is poor. It can be dyed with disperse dyes or non-ionic dyes, but the dyeing conditions are relatively harsh.

Second, the use of polyester filament

Polyester is used as clothing fiber, and its fabric can achieve the effect of no wrinkle and ironing after washing. Polyester is often blended or interwoven with various fibers, such as cotton polyester, wool polyester, etc., and is widely used in various clothing and decorative materials. In industry, polyester can be used for conveyor belts, tents, canvas, cables, fishing nets, etc., especially for the polyester cord used in tires, which is close to nylon in performance. Polyester can also be used for electrical insulating materials, acid-resistant filter cloth, and medical industry cloth. Synthetic fibers are widely used in various fields of the national economy because of their high strength, abrasion resistance, acid resistance, alkali resistance, high temperature resistance, light weight, warmth retention, good electrical insulation and resistance to mildew.

3. Polyester filament and chemical staple fiber

Textile fibers are divided into natural fibers and chemical fibers. Natural fibers are mainly silk, wool, cotton, and hemp. Chemical fibers are divided into synthetic fibers and man-made fibers.

Then compare polyester filament and acetate filament, because the two are equal, so from the later classification, polyester is synthetic acetic acid and artificial.

4. Polyester filament and staple fiber

Polyester (polyethylene terephthalate, PET) is polymerized by PTA and MEG. PET is in the form of rice grains and has various varieties. 75% is used in polyester for chemical fiber. The manufacture of polyester short fiber is according to the requirements of the textile industry. Polyester staple fiber and polyester filament are manufactured. Polyester fiber is divided into two types: filament and staple fiber. The so-called polyester filament is a filament with a length of more than one kilometer, and the filament is wound into a group. Polyester staple fiber is a short fiber of several centimeters to ten centimeters.

Five, the characteristics and uses of polyester fiber

Strength: The strength of polyester fiber is nearly 1 times higher than cotton and 3 times higher than wool, so polyester fabric is strong and durable.

Heat resistance: It can be used at -70°C~170°C, which has good heat resistance and thermal stability among synthetic fibers.

Elasticity: The elasticity of polyester is close to that of wool, and its wrinkle resistance is better than other fibers. The fabric is not wrinkled and has good line retention.

Abrasion resistance: The abrasion resistance of polyester is second only to nylon and ranks second among synthetic fibers.

Water absorption: Polyester has low moisture regain and good insulation performance, but due to low water absorption, high static electricity generated by friction and poor dyeing performance.

Polyester is used as clothing fiber, and its fabric achieves the effect of no wrinkle and ironing after washing. Polyester is often blended or interwoven with various fibers, such as cotton polyester, wool polyester, etc., and is widely used in various clothing and decorative materials. In industry, polyester can be used for conveyor belts, tents, canvas, cables, fishing nets, etc., especially for the polyester cord used in tires, which is close to nylon in performance. Polyester can also be used for electrical insulating materials, acid-resistant filter cloth, and medical industry cloth. Synthetic fibers are widely used in various fields of the national economy because of their high strength, abrasion resistance, acid resistance, alkali resistance, high temperature resistance, light weight, warmth retention, good electrical insulation and resistance to mildew.