Polyester

Background

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

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

History

In 1926,Hgr15 Linear Guide Rail-based E.I. du Pont de Nemours and Co.Roller Linear Guide. This early research, headed by W.H. Carothers,Ball Linear Guide Rail Installation, 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,Linear Guide. The company conducted some further developmental work, and in 1951, began to market the fiber under the name Dacron.AVR AVR-90 PVC insulated single core wire,AVR AVR-90 PVC insulated 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.UL 3239 silicone rubber single core cable, though PCDT is more elastic and resilient. PCDT is suited to the heavier consumer uses, such as draperies and furniture coverings.H05V-K H05V-U VDE Approved Normal 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,UL 3135 Silicone Rubber High Temperature Hook-up Wire for Appliance. In this process, ethylene is the polymer, the chemical building block of polyester,UL 3122 Fiber Braided Silicone Rubber High Temperature Hook-up Wire.

The Manufacturing
Process

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

Drying

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

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 Screw Pin Anchor Shackle G210

Forged Eye Bolt, 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,Hot forged eye bolt. The rope-Eye Bolt.

Drawing tow

• 1 Newly-Rigging Hardware.Magnetic Recess Former.

Crimping

• 2 Drawn tow is then fed into compression boxes,Cast In Loop, at a rate of 9-15 crimps per inch (3-6 per cm).Lifting loop with plastic card.

Setting

• 3 After the tow is crimped, it is heated at 212-302°F (100-150°C)Erection Anchor A.Galvanized erection anchor.

Cutting

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

The Future

Galvanized Lifting Socket With Cross Hole,Double Head Lifting Anchor's fastest-growing fiber.Lifting Foot 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,Rebar Lifting Foot Anchor, was introduced to the public in 1991. More luxurious and versatile than traditional polyester,2000KVA Isolation Transformer. Clothing designers such as Mary McFadden have created a line of clothes using this new form of polyester.1400KVA 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.