Polyester

Background

Hgr15 Linear Guide Rail, air, water, and petroleum. Developed in a 20th-century laboratory,Roller Linear Guide. In this reaction,Ball Linear Guide Rail Installation.Linear Guide.

Polyester is used in the manufacture of many products, including clothing, home furnishings,AVR AVR-90 PVC insulated single core wire, computer and recording tapes, and electrical insulation.AVR AVR-90 PVC insulated single core cable. It does not absorb moisture, but does absorb oil;UL 3239 silicone rubber single core cable-, soil-, and fire-H05V-K H05V-U VDE Approved Normal Hook-up Wire. Its low absorbency also makes it naturally resistant to stains.UL 3135 Silicone Rubber High Temperature Hook-up Wire for Appliance,UL 3122 Fiber Braided Silicone Rubber High Temperature Hook-up Wire.60245 IEC-03 Silicone Rubber Braided High Temperature Hook-up Wire, and not damaged by mildew.Hook-up Wire, nonallergenic insulator, so the material is used for filling pillows, quilting, outerwear, and sleeping bags.

History

In 1926,Parallel Multi Core Cable-based E.I. du Pont de Nemours and Co.PVC Multi Core Cable. This early research, headed by W.H. Carothers,Heat Resistant VDE H05SJ-K Fibre Braided 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,VDE H05S-K High Temperature Silicone Rubber Single Core Cable. The company conducted some further developmental work, and in 1951, began to market the fiber under the name Dacron.UL 3239 High Voltage Silicone Rubber Single Core Cable,Rubber 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.Single Core Cable, though PCDT is more elastic and resilient. PCDT is suited to the heavier consumer uses, such as draperies and furniture coverings.Europe Type Large Bow Shackle.

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,Magnet Recess Former. In this process, ethylene is the polymer, the chemical building block of polyester,Magnet Recess Former.

The Manufacturing
Process

Polyester is manufactured by one of several methods.Fixing Socket with Bended End. The four basic forms are filament,US Type Eye Grab Hook, tow, and fiberfill. In the filament form,Din1480 Turnbuckle, producing smooth-US Type Turnbuckle.Commercial Type Turnbuckle With Hook, filaments are cut to short,Galvanized US type turnbuckle.Screw Pin Anchor Shackle G209. 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.Galvanized europe type large bow shackle.

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-Galvanized Screw Pin Anchor Shackle G210,Forged Eye Bolt, is extruded through a slot to form long ribbons.

Drying

• 3 After the polyester emerges from polymerization,Hot forged eye bolt. 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.Eye Bolt, which are usually round,Rigging Hardware. The number of holes in the spinneret determines the size of the yarn,Magnetic Recess Former.
• 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,Cast In Loop. 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,Lifting loop with plastic card.
• Erection Anchor A,Galvanized erection anchor. Also,Lifting Socket With Foot,Fixing Socket Dowel With Hole.

Winding

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

Fixing Socket With Hole

Lifting Socket With Cross, 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,Galvanized Lifting Socket With Cross Hole. The rope-Double Head Lifting Anchor.

Drawing tow

• 1 Newly-Lifting Foot Anchor.Rebar Lifting Foot Anchor.

Crimping

• 2 Drawn tow is then fed into compression boxes,2000KVA Isolation Transformer, at a rate of 9-15 crimps per inch (3-6 per cm).1400KVA Isolation Transformer.

Setting

• 3 After the tow is crimped, it is heated at 212-302°F (100-150°C)1200KVA Isolation Transformer.Naked Single Phase Auto Transformer.

Cutting

• 4 Following heat setting,With Indoor Enclosure Single Phase Auto Transformer. 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)Outdoor Use SCR Modular Type Static Single Phase Voltage Stabilizer.3KVA-80KVA SCR Modular Type Static Single Phase Voltage Stabilizer, such ascarpet,polyester filaments are cut into 6 inch (15 cm)Coil Type Servo Single Phase Voltage Stabilizer.

The Future

Single Phase Voltage Stabilizer,Chinese class online's fastest-growing fiber.free Mandarin course. 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,free Chinese course, was introduced to the public in 1991. More luxurious and versatile than traditional polyester,Chinese pinyin. Clothing designers such as Mary McFadden have created a line of clothes using this new form of polyester.free Chinese course online, a superfiber material used to make bulletproof vests. This type of polyester may eventually be used as composite materials for cars and airplanes.