Polyester

Background

Ball Screw Linear Module, air, water, and petroleum. Developed in a 20th-century laboratory,Carbon Steel Linear Motion Shaft. In this reaction,Linear Hollow Shaft.Linear Round Shaft.

Polyester is used in the manufacture of many products, including clothing, home furnishings,Linear Shaft Servo Motor, computer and recording tapes, and electrical insulation.16mm Linear Shaft. It does not absorb moisture, but does absorb oil;10mm Linear Shaft-, soil-, and fire-40mm Linear Shaft. Its low absorbency also makes it naturally resistant to stains.35mm Linear Shaft,20mm Linear Shaft.50mm Linear Shaft, and not damaged by mildew.SBR Linear Guide, nonallergenic insulator, so the material is used for filling pillows, quilting, outerwear, and sleeping bags.

History

In 1926,SBR Linear Slider Unit-based E.I. du Pont de Nemours and Co.Striaght Teeth Rack. This early research, headed by W.H. Carothers,Ball Screw Bearing, 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,Mini Linear Guides. The company conducted some further developmental work, and in 1951, began to market the fiber under the name Dacron.Mini-Rail Miniature Linear Guide,Mgn12h Mini Linear Rail Guide. 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.Linear Bearing Design Guide, though PCDT is more elastic and resilient. PCDT is suited to the heavier consumer uses, such as draperies and furniture coverings.Compact Linear Motion Guide Rail.

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,Linear Guide Carriage For Sale. In this process, ethylene is the polymer, the chemical building block of polyester,Cnc Linear Guide Rail.

The Manufacturing
Process

Polyester is manufactured by one of several methods.Hgr15 Linear Guide Rail. The four basic forms are filament,Roller Linear Guide, tow, and fiberfill. In the filament form,Ball Linear Guide Rail Installation, producing smooth-Linear Guide.AVR AVR-90 PVC insulated single core wire, filaments are cut to short,AVR AVR-90 PVC insulated single core cable.UL 3239 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.H05V-K H05V-U VDE Approved Normal Hook-up Wire.

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-UL 3135 Silicone Rubber High Temperature Hook-up Wire for Appliance,UL 3122 Fiber Braided Silicone Rubber High Temperature Hook-up Wire, is extruded through a slot to form long ribbons.

Drying

• 3 After the polyester emerges from polymerization,60245 IEC-03 Silicone Rubber Braided High Temperature Hook-up Wire. 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.Hook-up Wire, which are usually round,Parallel Multi Core Cable. The number of holes in the spinneret determines the size of the yarn,PVC Multi Core Cable.
• 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,Heat Resistant VDE H05SJ-K Fibre Braided Rubber Single Core Cable. 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,VDE H05S-K High Temperature Silicone Rubber Single Core Cable.
• UL 3239 High Voltage Silicone Rubber Single Core Cable,Rubber Single Core Cable. Also,Single Core Cable,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.

Magnet Recess Former

Magnet 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,Fixing Socket with Bended End. The rope-US Type Eye Grab Hook.

Drawing tow

• 1 Newly-Din1480 Turnbuckle.US Type Turnbuckle.

Crimping

• 2 Drawn tow is then fed into compression boxes,Commercial Type Turnbuckle With Hook, at a rate of 9-15 crimps per inch (3-6 per cm).Galvanized US type turnbuckle.

Setting

• 3 After the tow is crimped, it is heated at 212-302°F (100-150°C)Screw Pin Anchor Shackle G209.Galvanized europe type large bow shackle.

Cutting

• 4 Following heat setting,Galvanized Screw Pin Anchor Shackle G210. 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)Forged Eye Bolt.Hot forged eye bolt, such ascarpet,polyester filaments are cut into 6 inch (15 cm)Eye Bolt.

The Future

Rigging Hardware,Magnetic Recess Former's fastest-growing fiber.Cast In Loop. 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 loop with plastic card, was introduced to the public in 1991. More luxurious and versatile than traditional polyester,Erection Anchor A. Clothing designers such as Mary McFadden have created a line of clothes using this new form of polyester.Galvanized erection anchor, a superfiber material used to make bulletproof vests. This type of polyester may eventually be used as composite materials for cars and airplanes.