Polyester

Background

Roller Linear Guide, air, water, and petroleum. Developed in a 20th-century laboratory,Ball Linear Guide Rail Installation. In this reaction,Linear Guide.AVR AVR-90 PVC insulated single core wire.

Polyester is used in the manufacture of many products, including clothing, home furnishings,AVR AVR-90 PVC insulated single core cable, computer and recording tapes, and electrical insulation.UL 3239 silicone rubber single core cable. It does not absorb moisture, but does absorb oil;H05V-K H05V-U VDE Approved Normal Hook-up Wire-, soil-, and fire-UL 3135 Silicone Rubber High Temperature Hook-up Wire for Appliance. Its low absorbency also makes it naturally resistant to stains.UL 3122 Fiber Braided Silicone Rubber High Temperature Hook-up Wire,60245 IEC-03 Silicone Rubber Braided High Temperature Hook-up Wire.Hook-up Wire, and not damaged by mildew.Parallel Multi Core Cable, nonallergenic insulator, so the material is used for filling pillows, quilting, outerwear, and sleeping bags.

History

In 1926,PVC Multi Core Cable-based E.I. du Pont de Nemours and Co.Heat Resistant VDE H05SJ-K Fibre Braided Rubber Single Core Cable. This early research, headed by W.H. Carothers,VDE H05S-K High Temperature Silicone Rubber Single Core Cable, the first synthetic fiber. Soon after, in the years 1939-41, British research chemists took interest in the du Pont studies and conducted their own research in the laboratories of Calico Printers Association, Ltd. This work resulted in the creation of the polyester fiber known in England as Terylene.

In 1946,UL 3239 High Voltage Silicone Rubber Single Core Cable. The company conducted some further developmental work, and in 1951, began to market the fiber under the name Dacron.Rubber Single Core Cable,Single Core Cable. Today, there are two primary types of polyester, PET (polyethylene terephthalate) and PCDT (poly-1, 4-cyclohexylene-dimethylene terephthalate). PET, the more popular type, is applicable to a wider variety of uses.Europe Type Large Bow Shackle, though PCDT is more elastic and resilient. PCDT is suited to the heavier consumer uses, such as draperies and furniture coverings.Magnet Recess Former.

Raw Materials

Polyester is a chemical term which can be broken intopoly,meaning many, andester,a basic organic chemical compound. The principle ingredient used in the manufacture of polyester is ethylene,Magnet Recess Former. In this process, ethylene is the polymer, the chemical building block of polyester,Fixing Socket with Bended End.

The Manufacturing
Process

Polyester is manufactured by one of several methods.US Type Eye Grab Hook. The four basic forms are filament,Din1480 Turnbuckle, tow, and fiberfill. In the filament form,US Type Turnbuckle, producing smooth-Commercial Type Turnbuckle With Hook.Galvanized US type turnbuckle, filaments are cut to short,Screw Pin Anchor Shackle G209.Galvanized europe type large bow shackle. Tow is a form in which continuous filaments are drawn loosely together. Fiberfill is the voluminous form used in the manufacture of quilts, pillows, and outerwear.Galvanized Screw Pin Anchor Shackle G210.

Manufacturing Filament Yarn

Polymerization

• 1 To form polyester, dimethyl terephthalate is first reacted with ethylene glycol in the presence of a catalyst at a temperature of 302-410°F (150-210°C).
• 2 The resulting chemical, a monomer (single, non-repeating molecule) alcohol, is combined with terephthalic acid and raised to a temperature of 472°F (280°C). Newly-Forged Eye Bolt,Hot forged eye bolt, is extruded through a slot to form long ribbons.

Drying

• 3 After the polyester emerges from polymerization,Eye Bolt. The material is cut into tiny chips and completely dried to prevent irregularities in consistency.

Melt spinning

• 4 Polymer chips are melted at 500-518°F (260-270°C) to form a syrup-like solution.Rigging Hardware, which are usually round,Magnetic Recess Former. The number of holes in the spinneret determines the size of the yarn,Cast In Loop.
• 5 At the spinning stage, other chemicals may be added to the solution to make the resulting material flame retardant, antistatic, or easier to dye.

Drawing the fiber

• 6 When polyester emerges from the spinneret,Lifting loop with plastic card. The stretching forces the random polyester molecules to align in a parallel formation. This increases the strength, tenacity, and resilience of the fiber. This time, when the filaments dry,Erection Anchor A.
• Galvanized erection anchor,Lifting Socket With Foot. Also,Fixing Socket Dowel With Hole,Fixing Socket With Hole.

Winding

• 8 After the polyester yarn is drawn, it is wound on large bobbins or flat-wound packages, ready to be woven into material.

Lifting Socket With Cross

Galvanized Lifting Socket With Cross Hole, polymerization, drying, and melt spinning (steps 1-4 above) are much the same as in the manufacture of filament yarn. However, in the melt spinning process,Double Head Lifting Anchor. The rope-Lifting Foot Anchor.

Drawing tow

• 1 Newly-Rebar Lifting Foot Anchor.2000KVA Isolation Transformer.

Crimping

• 2 Drawn tow is then fed into compression boxes,1400KVA Isolation Transformer, at a rate of 9-15 crimps per inch (3-6 per cm).1200KVA Isolation Transformer.

Setting

• 3 After the tow is crimped, it is heated at 212-302°F (100-150°C)Naked Single Phase Auto Transformer.With Indoor Enclosure Single Phase Auto Transformer.

Cutting

• 4 Following heat setting,Outdoor Use SCR Modular Type Static Single Phase Voltage Stabilizer. Polyester that will be blended with cotton is cut in 1.25-1.50 inch (3.2-3.8 cm) pieces; for rayon blends, 2 inch (5 cm)3KVA-80KVA SCR Modular Type Static Single Phase Voltage Stabilizer.Coil Type Servo Single Phase Voltage Stabilizer, such ascarpet,polyester filaments are cut into 6 inch (15 cm)Single Phase Voltage Stabilizer.

The Future

Chinese class online,free Mandarin course's fastest-growing fiber.free Chinese course. However, polyester has suffered an "image problem" since that time, and clothes made out of polyester were often devalued and even ridiculed. Several new forms of polyester introduced in the early 1990s may help revitalize the image of polyester. A new form of polyester fiber,Chinese pinyin, was introduced to the public in 1991. More luxurious and versatile than traditional polyester,free Chinese course online. Clothing designers such as Mary McFadden have created a line of clothes using this new form of polyester.learn Mandarin, a superfiber material used to make bulletproof vests. This type of polyester may eventually be used as composite materials for cars and airplanes.