Polyester

Background

Accessories For Blinds Bottom weight BW-P3, air, water, and petroleum. Developed in a 20th-century laboratory,Accessories For Blinds Bottom weight BW-P2. In this reaction,Accessories For Blinds Bottom weight BW-A4.Accessories For Blinds Bottom weight BW-A3.

Polyester is used in the manufacture of many products, including clothing, home furnishings,Accessories For Blinds Bottom weight BW-A2, computer and recording tapes, and electrical insulation.Accessories For Blinds Bottom weight BW-A1. It does not absorb moisture, but does absorb oil;Accessories For Blinds Bracket BR-06-, soil-, and fire-Accessories For Blinds Bracket BR-05. Its low absorbency also makes it naturally resistant to stains.Accessories For Blinds Bracket BR-03,Accessories For Blinds Chain set CHA-02.Accessories For Blinds Top cover TC-A1, and not damaged by mildew.Accessories For Blinds, nonallergenic insulator, so the material is used for filling pillows, quilting, outerwear, and sleeping bags.

History

In 1926,Shower curtain SHW-02-based E.I. du Pont de Nemours and Co.Shower curtain. This early research, headed by W.H. Carothers,Push curtain BL-PSH01, 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,Push curtain BL-PSH02. The company conducted some further developmental work, and in 1951, began to market the fiber under the name Dacron.Push curtain,Sunscreen Blinds SS-01. 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.Zebra Blinds ZB-05, though PCDT is more elastic and resilient. PCDT is suited to the heavier consumer uses, such as draperies and furniture coverings.Zebra Blinds ZB-03.

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,Zebra Blinds ZB-02. In this process, ethylene is the polymer, the chemical building block of polyester,Zebra Blinds ZB-01.

The Manufacturing
Process

Polyester is manufactured by one of several methods.Zebra Blinds. The four basic forms are filament,Blackout Blinds Ice cracks 1002, tow, and fiberfill. In the filament form,Blackout Blinds Jacquard, producing smooth-Blackout Blinds Plain RB-P01/P02.Blackout Blinds Ice cracks, filaments are cut to short,Blackout Blinds Ice cracks 1001.Blackout Blinds. 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.Roller Blinds.

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-EVA Carpet Indoor Playground Fitting,Ocean Ball Indoor Playground Fitting, is extruded through a slot to form long ribbons.

Drying

• 3 After the polyester emerges from polymerization,Wall Mat Indoor Playground Fitting. 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.Globe Turntable Indoor Playground Equipment, which are usually round,The Interesting Spider Tower Indoor Playground Equipment. The number of holes in the spinneret determines the size of the yarn,Trampoline Boxing Indoor Playground Equipment.
• 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,Animal Roller Indoor Playground Electric Equipment. 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,Roller Indoor Playground Electric Equipment.
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Winding

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

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Animal Turntable Indoor Playground Electric Equipment, 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,Motorcycle Turntable Indoor Playground Electric Equipment. The rope-Robot Turntable Indoor Playground Electric Equipment.

Drawing tow

• 1 Newly-Aircraft Turntable Indoor Playground Electric Equipment.Horse Turntable Indoor Playground Electric Equipment.

Crimping

• 2 Drawn tow is then fed into compression boxes,Bicycle Turntable Indoor Playground Electric Equipment, at a rate of 9-15 crimps per inch (3-6 per cm).Indoor Playground Electric Equipment.

Setting

• 3 After the tow is crimped, it is heated at 212-302°F (100-150°C)Children Trampoline Indoor Playground.Kids Trampoline Indoor Playground.

Cutting

• 4 Following heat setting,Adult Trampoline Indoor Playground. 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)200-300 Square Meters Forest Theme Indoor Playground.300-500 Square Meters Forest Theme Indoor Playground, such ascarpet,polyester filaments are cut into 6 inch (15 cm)100-200 Square Meters Colorful Theme Indoor Playground.

The Future

100-200 Square Meters British Theme Indoor Playground,100-200 Square Meters Ocean Theme Indoor Playground's fastest-growing fiber.100-200 Square Meters Macaron Theme Indoor Playground. 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,300-500 Square Meters Macaron Theme Indoor Playground, was introduced to the public in 1991. More luxurious and versatile than traditional polyester,100-200 Square Meters Space Theme Indoor Playground. Clothing designers such as Mary McFadden have created a line of clothes using this new form of polyester.200-500 Square Meters Space Theme Indoor Playground, a superfiber material used to make bulletproof vests. This type of polyester may eventually be used as composite materials for cars and airplanes.