Polyester

Background

Cafe Rod, air, water, and petroleum. Developed in a 20th-century laboratory,SF015. In this reaction,SF027.SF026.

Polyester is used in the manufacture of many products, including clothing, home furnishings,SF025, computer and recording tapes, and electrical insulation.SF022. It does not absorb moisture, but does absorb oil;SF021-, soil-, and fire-Accessories For Blinds Other TP-01. Its low absorbency also makes it naturally resistant to stains.Accessories For Blinds Other TP-02,Accessories For Blinds Bottom weight BW-P3.Accessories For Blinds Bottom weight BW-P2, and not damaged by mildew.Accessories For Blinds Bottom weight BW-A4, nonallergenic insulator, so the material is used for filling pillows, quilting, outerwear, and sleeping bags.

History

In 1926,Accessories For Blinds Bottom weight BW-A3-based E.I. du Pont de Nemours and Co.Accessories For Blinds Bottom weight BW-A2. This early research, headed by W.H. Carothers,Accessories For Blinds Bottom weight BW-A1, 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,Accessories For Blinds Bracket BR-06. The company conducted some further developmental work, and in 1951, began to market the fiber under the name Dacron.Accessories For Blinds Bracket BR-05,Accessories For Blinds Bracket BR-03. 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.Accessories For Blinds Chain set CHA-02, though PCDT is more elastic and resilient. PCDT is suited to the heavier consumer uses, such as draperies and furniture coverings.Accessories For Blinds Top cover TC-A1.

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,Accessories For Blinds. In this process, ethylene is the polymer, the chemical building block of polyester,Shower curtain SHW-02.

The Manufacturing
Process

Polyester is manufactured by one of several methods.Shower curtain. The four basic forms are filament,Push curtain BL-PSH01, tow, and fiberfill. In the filament form,Push curtain BL-PSH02, producing smooth-Push curtain.Sunscreen Blinds SS-01, filaments are cut to short,Zebra Blinds ZB-05.Zebra Blinds ZB-03. 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.Zebra Blinds ZB-02.

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-Zebra Blinds ZB-01,Zebra Blinds, is extruded through a slot to form long ribbons.

Drying

• 3 After the polyester emerges from polymerization,Blackout Blinds Ice cracks 1002. 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.Blackout Blinds Jacquard, which are usually round,Blackout Blinds Plain RB-P01/P02. The number of holes in the spinneret determines the size of the yarn,Blackout Blinds Ice cracks.
• 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,Blackout Blinds Ice cracks 1001. 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,Blackout Blinds.
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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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The Interesting Spider Tower Indoor Playground 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,Trampoline Boxing Indoor Playground Equipment. The rope-Animal Roller Indoor Playground Electric Equipment.

Drawing tow

• 1 Newly-Roller Indoor Playground Electric Equipment.Ship Turnplate Indoor Playground Electric Equipment.

Crimping

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

Setting

• 3 After the tow is crimped, it is heated at 212-302°F (100-150°C)Watermelon Turnplate Indoor Playground Electric Equipment.Turnplate Indoor Playground Electric Equipment.

Cutting

• 4 Following heat setting,Animal Turntable Indoor Playground Electric Equipment. 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)Motorcycle Turntable Indoor Playground Electric Equipment.Robot Turntable Indoor Playground Electric Equipment, such ascarpet,polyester filaments are cut into 6 inch (15 cm)Aircraft Turntable Indoor Playground Electric Equipment.

The Future

Horse Turntable Indoor Playground Electric Equipment,Bicycle Turntable Indoor Playground Electric Equipment's fastest-growing fiber.Indoor Playground Electric Equipment. 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,Children Trampoline Indoor Playground, was introduced to the public in 1991. More luxurious and versatile than traditional polyester,Kids Trampoline Indoor Playground. Clothing designers such as Mary McFadden have created a line of clothes using this new form of polyester.Adult Trampoline 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.