Polyester

Background

SFP015, air, water, and petroleum. Developed in a 20th-century laboratory,SFP003. In this reaction,SFP001.SFT07.

Polyester is used in the manufacture of many products, including clothing, home furnishings,SFT05, computer and recording tapes, and electrical insulation.SFT02. It does not absorb moisture, but does absorb oil;SFR07-, soil-, and fire-SF002. Its low absorbency also makes it naturally resistant to stains.SF009,SF008.SF007, and not damaged by mildew.SF006-1013, nonallergenic insulator, so the material is used for filling pillows, quilting, outerwear, and sleeping bags.

History

In 1926,SF005-based E.I. du Pont de Nemours and Co.Cafe Rod. This early research, headed by W.H. Carothers,SF015, 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,SF027. The company conducted some further developmental work, and in 1951, began to market the fiber under the name Dacron.SF026,SF025. 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.SF022, though PCDT is more elastic and resilient. PCDT is suited to the heavier consumer uses, such as draperies and furniture coverings.SF021.

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 Other TP-01. In this process, ethylene is the polymer, the chemical building block of polyester,Accessories For Blinds Other TP-02.

The Manufacturing
Process

Polyester is manufactured by one of several methods.Accessories For Blinds Bottom weight BW-P3. The four basic forms are filament,Accessories For Blinds Bottom weight BW-P2, tow, and fiberfill. In the filament form,Accessories For Blinds Bottom weight BW-A4, producing smooth-Accessories For Blinds Bottom weight BW-A3.Accessories For Blinds Bottom weight BW-A2, filaments are cut to short,Accessories For Blinds Bottom weight BW-A1.Accessories For Blinds Bracket BR-06. 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.Accessories For Blinds Bracket BR-05.

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-Accessories For Blinds Bracket BR-03,Accessories For Blinds Chain set CHA-02, is extruded through a slot to form long ribbons.

Drying

• 3 After the polyester emerges from polymerization,Accessories For Blinds Top cover TC-A1. 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.Accessories For Blinds, which are usually round,Shower curtain SHW-02. The number of holes in the spinneret determines the size of the yarn,Shower curtain.
• 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,Push curtain BL-PSH01. 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,Push curtain BL-PSH02.
• Push curtain,Sunscreen Blinds SS-01. Also,Zebra Blinds ZB-05,Zebra Blinds ZB-03.

Winding

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

Zebra Blinds ZB-02

Zebra Blinds ZB-01, 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,Zebra Blinds. The rope-Blackout Blinds Ice cracks 1002.

Drawing tow

• 1 Newly-Blackout Blinds Jacquard.Blackout Blinds Plain RB-P01/P02.

Crimping

• 2 Drawn tow is then fed into compression boxes,Blackout Blinds Ice cracks, at a rate of 9-15 crimps per inch (3-6 per cm).Blackout Blinds Ice cracks 1001.

Setting

• 3 After the tow is crimped, it is heated at 212-302°F (100-150°C)Blackout Blinds.Roller Blinds.

Cutting

• 4 Following heat setting,EVA Carpet Indoor Playground Fitting. 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)Ocean Ball Indoor Playground Fitting.Wall Mat Indoor Playground Fitting, such ascarpet,polyester filaments are cut into 6 inch (15 cm)Globe Turntable Indoor Playground Equipment.

The Future

The Interesting Spider Tower Indoor Playground Equipment,Trampoline Boxing Indoor Playground Equipment's fastest-growing fiber.Animal Roller 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,Roller Indoor Playground Electric Equipment, was introduced to the public in 1991. More luxurious and versatile than traditional polyester,Ship Turnplate Indoor Playground Electric Equipment. Clothing designers such as Mary McFadden have created a line of clothes using this new form of polyester.Animal Turnplate Indoor Playground Electric Equipment, a superfiber material used to make bulletproof vests. This type of polyester may eventually be used as composite materials for cars and airplanes.