Polyester

Background

Zebra Blinds, air, water, and petroleum. Developed in a 20th-century laboratory,Blackout Blinds Ice cracks 1002. In this reaction,Blackout Blinds Jacquard.Blackout Blinds Plain RB-P01/P02.

Polyester is used in the manufacture of many products, including clothing, home furnishings,Blackout Blinds Ice cracks, computer and recording tapes, and electrical insulation.Blackout Blinds Ice cracks 1001. It does not absorb moisture, but does absorb oil;Blackout Blinds-, soil-, and fire-Roller Blinds. Its low absorbency also makes it naturally resistant to stains.EVA Carpet Indoor Playground Fitting,Ocean Ball Indoor Playground Fitting.Wall Mat Indoor Playground Fitting, and not damaged by mildew.Globe Turntable Indoor Playground Equipment, nonallergenic insulator, so the material is used for filling pillows, quilting, outerwear, and sleeping bags.

History

In 1926,The Interesting Spider Tower Indoor Playground Equipment-based E.I. du Pont de Nemours and Co.Trampoline Boxing Indoor Playground Equipment. This early research, headed by W.H. Carothers,Animal Roller Indoor Playground Electric Equipment, 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,Roller Indoor Playground Electric Equipment. The company conducted some further developmental work, and in 1951, began to market the fiber under the name Dacron.Ship Turnplate Indoor Playground Electric Equipment,Animal Turnplate Indoor Playground Electric Equipment. 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.Snowman Turnplate Indoor Playground Electric Equipment, though PCDT is more elastic and resilient. PCDT is suited to the heavier consumer uses, such as draperies and furniture coverings.Watermelon Turnplate Indoor Playground Electric Equipment.

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,Turnplate Indoor Playground Electric Equipment. In this process, ethylene is the polymer, the chemical building block of polyester,Animal Turntable Indoor Playground Electric Equipment.

The Manufacturing
Process

Polyester is manufactured by one of several methods.Motorcycle Turntable Indoor Playground Electric Equipment. The four basic forms are filament,Robot Turntable Indoor Playground Electric Equipment, tow, and fiberfill. In the filament form,Aircraft Turntable Indoor Playground Electric Equipment, producing smooth-Horse Turntable Indoor Playground Electric Equipment.Bicycle Turntable Indoor Playground Electric Equipment, filaments are cut to short,Indoor Playground Electric Equipment.Children Trampoline Indoor Playground. 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.Kids Trampoline Indoor Playground.

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-Adult Trampoline Indoor Playground,200-300 Square Meters Forest Theme Indoor Playground, is extruded through a slot to form long ribbons.

Drying

• 3 After the polyester emerges from polymerization,300-500 Square Meters Forest Theme Indoor Playground. 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.100-200 Square Meters Colorful Theme Indoor Playground, which are usually round,100-200 Square Meters British Theme Indoor Playground. The number of holes in the spinneret determines the size of the yarn,100-200 Square Meters Ocean Theme Indoor Playground.
• 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,100-200 Square Meters Macaron Theme Indoor Playground. 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,300-500 Square Meters Macaron Theme Indoor Playground.
• 100-200 Square Meters Space Theme Indoor Playground,200-500 Square Meters Space Theme Indoor Playground. Also,Castle Theme Indoor Playground,Children Small Indoor Playground.

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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Sand Pond Indoor Playground, 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,20-100 Square Meters Indoor Playground. The rope-Large Comprehensive Indoor Playground.

Drawing tow

• 1 Newly-Big Ball Pool Indoor Playground.High-rise Indoor Playground.

Crimping

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

Setting

• 3 After the tow is crimped, it is heated at 212-302°F (100-150°C)High Temperature Flange Insulation Kits.Flange Insulation Kit Gasket.

Cutting

• 4 Following heat setting,Flange Bolt Insulation Kits. 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)Flange Insulation Kit Gaskets.Pipe Flange Insulation Kits, such ascarpet,polyester filaments are cut into 6 inch (15 cm)Phenolic Flange Insulation Kits.

The Future

Flange Insulation Kits,Piping Flange Isolating Gaskets and Kits's fastest-growing fiber.Flange Insulation Gasket Kits. 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,Piping Flange Isolating Gaskets and Kits, was introduced to the public in 1991. More luxurious and versatile than traditional polyester,Flange Isolating Gasket Kits. Clothing designers such as Mary McFadden have created a line of clothes using this new form of polyester.Flange Insulation Kit Gasket, a superfiber material used to make bulletproof vests. This type of polyester may eventually be used as composite materials for cars and airplanes.