Polyester

Background

Mini Linear Guides, air, water, and petroleum. Developed in a 20th-century laboratory,Mini-Rail Miniature Linear Guide. In this reaction,Mgn12h Mini Linear Rail Guide.Linear Bearing Design Guide.

Polyester is used in the manufacture of many products, including clothing, home furnishings,Compact Linear Motion Guide Rail, computer and recording tapes, and electrical insulation.Linear Guide Carriage For Sale. It does not absorb moisture, but does absorb oil;Cnc Linear Guide Rail-, soil-, and fire-Hgr15 Linear Guide Rail. Its low absorbency also makes it naturally resistant to stains.Roller Linear Guide,Ball Linear Guide Rail Installation.Linear Guide, and not damaged by mildew.AVR AVR-90 PVC insulated single core wire, nonallergenic insulator, so the material is used for filling pillows, quilting, outerwear, and sleeping bags.

History

In 1926,AVR AVR-90 PVC insulated single core cable-based E.I. du Pont de Nemours and Co.UL 3239 silicone rubber single core cable. This early research, headed by W.H. Carothers,H05V-K H05V-U VDE Approved Normal Hook-up Wire, 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 3135 Silicone Rubber High Temperature Hook-up Wire for Appliance. The company conducted some further developmental work, and in 1951, began to market the fiber under the name Dacron.UL 3122 Fiber Braided Silicone Rubber High Temperature Hook-up Wire,60245 IEC-03 Silicone Rubber Braided High Temperature Hook-up Wire. 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.Hook-up Wire, though PCDT is more elastic and resilient. PCDT is suited to the heavier consumer uses, such as draperies and furniture coverings.Parallel Multi Core Cable.

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,PVC Multi Core Cable. In this process, ethylene is the polymer, the chemical building block of polyester,Heat Resistant VDE H05SJ-K Fibre Braided Rubber Single Core Cable.

The Manufacturing
Process

Polyester is manufactured by one of several methods.VDE H05S-K High Temperature Silicone Rubber Single Core Cable. The four basic forms are filament,UL 3239 High Voltage Silicone Rubber Single Core Cable, tow, and fiberfill. In the filament form,Rubber Single Core Cable, producing smooth-Single Core Cable.Europe Type Large Bow Shackle, filaments are cut to short,Magnet Recess Former.Magnet Recess Former. 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.Fixing Socket with Bended End.

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-US Type Eye Grab Hook,Din1480 Turnbuckle, is extruded through a slot to form long ribbons.

Drying

• 3 After the polyester emerges from polymerization,US Type Turnbuckle. 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.Commercial Type Turnbuckle With Hook, which are usually round,Galvanized US type turnbuckle. The number of holes in the spinneret determines the size of the yarn,Screw Pin Anchor Shackle G209.
• 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,Galvanized europe type large bow shackle. 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,Galvanized Screw Pin Anchor Shackle G210.
• Forged Eye Bolt,Hot forged eye bolt. Also,Eye Bolt,Rigging Hardware.

Winding

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

Magnetic Recess Former

Cast In Loop, 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,Lifting loop with plastic card. The rope-Erection Anchor A.

Drawing tow

• 1 Newly-Galvanized erection anchor.Lifting Socket With Foot.

Crimping

• 2 Drawn tow is then fed into compression boxes,Fixing Socket Dowel With Hole, at a rate of 9-15 crimps per inch (3-6 per cm).Fixing Socket With Hole.

Setting

• 3 After the tow is crimped, it is heated at 212-302°F (100-150°C)Lifting Socket With Cross.Galvanized Lifting Socket With Cross Hole.

Cutting

• 4 Following heat setting,Double Head Lifting Anchor. 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)Lifting Foot Anchor.Rebar Lifting Foot Anchor, such ascarpet,polyester filaments are cut into 6 inch (15 cm)2000KVA Isolation Transformer.

The Future

1400KVA Isolation Transformer,1200KVA Isolation Transformer's fastest-growing fiber.Naked Single Phase Auto Transformer. 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,With Indoor Enclosure Single Phase Auto Transformer, was introduced to the public in 1991. More luxurious and versatile than traditional polyester,Outdoor Use SCR Modular Type Static Single Phase Voltage Stabilizer. Clothing designers such as Mary McFadden have created a line of clothes using this new form of polyester.3KVA-80KVA SCR Modular Type Static Single Phase Voltage Stabilizer, a superfiber material used to make bulletproof vests. This type of polyester may eventually be used as composite materials for cars and airplanes.