Polyester

Background

20mm Linear Shaft, air, water, and petroleum. Developed in a 20th-century laboratory,50mm Linear Shaft. In this reaction,SBR Linear Guide.SBR Linear Slider Unit.

Polyester is used in the manufacture of many products, including clothing, home furnishings,Striaght Teeth Rack, computer and recording tapes, and electrical insulation.Ball Screw Bearing. It does not absorb moisture, but does absorb oil;Mini Linear Guides-, soil-, and fire-Mini-Rail Miniature Linear Guide. Its low absorbency also makes it naturally resistant to stains.Mgn12h Mini Linear Rail Guide,Linear Bearing Design Guide.Compact Linear Motion Guide Rail, and not damaged by mildew.Linear Guide Carriage For Sale, nonallergenic insulator, so the material is used for filling pillows, quilting, outerwear, and sleeping bags.

History

In 1926,Cnc Linear Guide Rail-based E.I. du Pont de Nemours and Co.Hgr15 Linear Guide Rail. This early research, headed by W.H. Carothers,Roller Linear Guide, 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,Ball Linear Guide Rail Installation. The company conducted some further developmental work, and in 1951, began to market the fiber under the name Dacron.Linear Guide,AVR AVR-90 PVC insulated single core 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.AVR AVR-90 PVC insulated single core cable, though PCDT is more elastic and resilient. PCDT is suited to the heavier consumer uses, such as draperies and furniture coverings.UL 3239 silicone rubber single 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,H05V-K H05V-U VDE Approved Normal Hook-up Wire. In this process, ethylene is the polymer, the chemical building block of polyester,UL 3135 Silicone Rubber High Temperature Hook-up Wire for Appliance.

The Manufacturing
Process

Polyester is manufactured by one of several methods.UL 3122 Fiber Braided Silicone Rubber High Temperature Hook-up Wire. The four basic forms are filament,60245 IEC-03 Silicone Rubber Braided High Temperature Hook-up Wire, tow, and fiberfill. In the filament form,Hook-up Wire, producing smooth-Parallel Multi Core Cable.PVC Multi Core Cable, filaments are cut to short,Heat Resistant VDE H05SJ-K Fibre Braided Rubber Single Core Cable.VDE H05S-K High Temperature Silicone Rubber Single Core Cable. 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.UL 3239 High Voltage Silicone Rubber Single Core Cable.

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-Rubber Single Core Cable,Single Core Cable, is extruded through a slot to form long ribbons.

Drying

• 3 After the polyester emerges from polymerization,Europe Type Large Bow Shackle. 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.Magnet Recess Former, which are usually round,Magnet Recess Former. The number of holes in the spinneret determines the size of the yarn,Fixing Socket with Bended End.
• 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,US Type Eye Grab Hook. 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,Din1480 Turnbuckle.
• US Type Turnbuckle,Commercial Type Turnbuckle With Hook. Also,Galvanized US type turnbuckle,Screw Pin Anchor Shackle G209.

Winding

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

Galvanized europe type large bow shackle

Galvanized Screw Pin Anchor Shackle G210, 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,Forged Eye Bolt. The rope-Hot forged eye bolt.

Drawing tow

• 1 Newly-Eye Bolt.Rigging Hardware.

Crimping

• 2 Drawn tow is then fed into compression boxes,Magnetic Recess Former, at a rate of 9-15 crimps per inch (3-6 per cm).Cast In Loop.

Setting

• 3 After the tow is crimped, it is heated at 212-302°F (100-150°C)Lifting loop with plastic card.Erection Anchor A.

Cutting

• 4 Following heat setting,Galvanized erection 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 Socket With Foot.Fixing Socket Dowel With Hole, such ascarpet,polyester filaments are cut into 6 inch (15 cm)Fixing Socket With Hole.

The Future

Lifting Socket With Cross,Galvanized Lifting Socket With Cross Hole's fastest-growing fiber.Double Head Lifting Anchor. 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,Lifting Foot Anchor, was introduced to the public in 1991. More luxurious and versatile than traditional polyester,Rebar Lifting Foot Anchor. Clothing designers such as Mary McFadden have created a line of clothes using this new form of polyester.2000KVA Isolation Transformer, a superfiber material used to make bulletproof vests. This type of polyester may eventually be used as composite materials for cars and airplanes.