Polyester

Background

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

Polyester is used in the manufacture of many products, including clothing, home furnishings,Linear Bearing Design Guide, computer and recording tapes, and electrical insulation.Compact Linear Motion Guide Rail. It does not absorb moisture, but does absorb oil;Linear Guide Carriage For Sale-, soil-, and fire-Cnc Linear Guide Rail. Its low absorbency also makes it naturally resistant to stains.Hgr15 Linear Guide Rail,Roller Linear Guide.Ball Linear Guide Rail Installation, and not damaged by mildew.Linear Guide, 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 wire-based E.I. du Pont de Nemours and Co.AVR AVR-90 PVC insulated single core cable. This early research, headed by W.H. Carothers,UL 3239 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,H05V-K H05V-U VDE Approved Normal Hook-up Wire. The company conducted some further developmental work, and in 1951, began to market the fiber under the name Dacron.UL 3135 Silicone Rubber High Temperature Hook-up Wire for Appliance,UL 3122 Fiber Braided Silicone Rubber 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.60245 IEC-03 Silicone Rubber Braided High Temperature Hook-up Wire, though PCDT is more elastic and resilient. PCDT is suited to the heavier consumer uses, such as draperies and furniture coverings.Hook-up Wire.

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,Parallel Multi Core Cable. In this process, ethylene is the polymer, the chemical building block of polyester,PVC Multi Core Cable.

The Manufacturing
Process

Polyester is manufactured by one of several methods.Heat Resistant VDE H05SJ-K Fibre Braided Rubber Single Core Cable. The four basic forms are filament,VDE H05S-K High Temperature Silicone Rubber Single Core Cable, tow, and fiberfill. In the filament form,UL 3239 High Voltage Silicone Rubber Single Core Cable, producing smooth-Rubber Single Core Cable.Single Core Cable, filaments are cut to short,Europe Type Large Bow Shackle.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.Magnet Recess Former.

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-Fixing Socket with Bended End,US Type Eye Grab Hook, is extruded through a slot to form long ribbons.

Drying

• 3 After the polyester emerges from polymerization,Din1480 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.US Type Turnbuckle, which are usually round,Commercial Type Turnbuckle With Hook. The number of holes in the spinneret determines the size of the yarn,Galvanized US type turnbuckle.
• 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,Screw Pin Anchor Shackle G209. 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 europe type large bow shackle.
• Galvanized Screw Pin Anchor Shackle G210,Forged Eye Bolt. Also,Hot forged eye bolt,Eye Bolt.

Winding

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

Rigging Hardware

Magnetic Recess Former, 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,Cast In Loop. The rope-Lifting loop with plastic card.

Drawing tow

• 1 Newly-Erection Anchor A.Galvanized erection anchor.

Crimping

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

Setting

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

Cutting

• 4 Following heat setting,Galvanized Lifting Socket With Cross Hole. 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)Double Head Lifting Anchor.Lifting Foot Anchor, such ascarpet,polyester filaments are cut into 6 inch (15 cm)Rebar Lifting Foot Anchor.

The Future

2000KVA Isolation Transformer,1400KVA Isolation Transformer's fastest-growing fiber.1200KVA Isolation 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,Naked Single Phase Auto Transformer, was introduced to the public in 1991. More luxurious and versatile than traditional polyester,With Indoor Enclosure Single Phase Auto Transformer. Clothing designers such as Mary McFadden have created a line of clothes using this new form of polyester.Outdoor Use 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.