Polyester

Background

Wall Mat Indoor Playground Fitting, air, water, and petroleum. Developed in a 20th-century laboratory,Globe Turntable Indoor Playground Equipment. In this reaction,The Interesting Spider Tower Indoor Playground Equipment.Trampoline Boxing Indoor Playground Equipment.

Polyester is used in the manufacture of many products, including clothing, home furnishings,Animal Roller Indoor Playground Electric Equipment, computer and recording tapes, and electrical insulation.Roller Indoor Playground Electric Equipment. It does not absorb moisture, but does absorb oil;Ship Turnplate Indoor Playground Electric Equipment-, soil-, and fire-Animal Turnplate Indoor Playground Electric Equipment. Its low absorbency also makes it naturally resistant to stains.Snowman Turnplate Indoor Playground Electric Equipment,Watermelon Turnplate Indoor Playground Electric Equipment.Turnplate Indoor Playground Electric Equipment, and not damaged by mildew.Animal Turntable Indoor Playground Electric Equipment, nonallergenic insulator, so the material is used for filling pillows, quilting, outerwear, and sleeping bags.

History

In 1926,Motorcycle Turntable Indoor Playground Electric Equipment-based E.I. du Pont de Nemours and Co.Robot Turntable Indoor Playground Electric Equipment. This early research, headed by W.H. Carothers,Aircraft Turntable 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,Horse Turntable Indoor Playground Electric Equipment. The company conducted some further developmental work, and in 1951, began to market the fiber under the name Dacron.Bicycle Turntable Indoor Playground Electric Equipment,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.Children Trampoline Indoor Playground, though PCDT is more elastic and resilient. PCDT is suited to the heavier consumer uses, such as draperies and furniture coverings.Kids Trampoline Indoor Playground.

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,Adult Trampoline Indoor Playground. In this process, ethylene is the polymer, the chemical building block of polyester,200-300 Square Meters Forest Theme Indoor Playground.

The Manufacturing
Process

Polyester is manufactured by one of several methods.300-500 Square Meters Forest Theme Indoor Playground. The four basic forms are filament,100-200 Square Meters Colorful Theme Indoor Playground, tow, and fiberfill. In the filament form,100-200 Square Meters British Theme Indoor Playground, producing smooth-100-200 Square Meters Ocean Theme Indoor Playground.100-200 Square Meters Macaron Theme Indoor Playground, filaments are cut to short,300-500 Square Meters Macaron Theme Indoor Playground.100-200 Square Meters Space Theme 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.200-500 Square Meters Space Theme 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-Castle Theme Indoor Playground,Children Small Indoor Playground, is extruded through a slot to form long ribbons.

Drying

• 3 After the polyester emerges from polymerization,Children Driving School 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.Sand Pond Indoor Playground, which are usually round,20-100 Square Meters Indoor Playground. The number of holes in the spinneret determines the size of the yarn,Large Comprehensive 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,Big Ball Pool 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,High-rise Indoor Playground.
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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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Flange Insulation Kit Gaskets, 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,Pipe Flange Insulation Kits. The rope-Phenolic Flange Insulation Kits.

Drawing tow

• 1 Newly-Flange Insulation Kits.Piping Flange Isolating Gaskets and Kits.

Crimping

• 2 Drawn tow is then fed into compression boxes,Flange Insulation Gasket Kits, at a rate of 9-15 crimps per inch (3-6 per cm).Piping Flange Isolating Gaskets and Kits.

Setting

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

Cutting

• 4 Following heat setting,High Temperature Flange 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)8 Flange Isolation Kit.6 Flange Insulation Kit, such ascarpet,polyester filaments are cut into 6 inch (15 cm)Phenolic Flange Insulation Kits.

The Future

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