Polyester

Background

Blackout Blinds Ice cracks 1001, air, water, and petroleum. Developed in a 20th-century laboratory,Blackout Blinds. In this reaction,Roller Blinds.EVA Carpet Indoor Playground Fitting.

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

History

In 1926,Animal Turnplate Indoor Playground Electric Equipment-based E.I. du Pont de Nemours and Co.Snowman Turnplate Indoor Playground Electric Equipment. This early research, headed by W.H. Carothers,Watermelon Turnplate 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,Turnplate Indoor Playground Electric Equipment. The company conducted some further developmental work, and in 1951, began to market the fiber under the name Dacron.Animal Turntable Indoor Playground Electric Equipment,Motorcycle Turntable 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.Robot Turntable 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.Aircraft Turntable 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,Horse Turntable Indoor Playground Electric Equipment. In this process, ethylene is the polymer, the chemical building block of polyester,Bicycle Turntable Indoor Playground Electric Equipment.

The Manufacturing
Process

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

Drying

• 3 After the polyester emerges from polymerization,300-500 Square Meters Macaron 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 Space Theme Indoor Playground, which are usually round,200-500 Square Meters Space Theme Indoor Playground. The number of holes in the spinneret determines the size of the yarn,Castle 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,Children Small 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,Children Driving School Playground.
• Sand Pond Indoor Playground,20-100 Square Meters Indoor Playground. Also,Large Comprehensive Indoor Playground,Big Ball Pool 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.

High-rise Indoor Playground

Theme 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,Indoor Playground. The rope-High Temperature Flange Insulation Kits.

Drawing tow

• 1 Newly-Flange Insulation Kit Gasket.Flange Bolt Insulation Kits.

Crimping

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

Setting

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

Cutting

• 4 Following heat setting,Piping Flange Isolating Gaskets and 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 Gasket Kits.Piping Flange Isolating Gaskets and Kits, such ascarpet,polyester filaments are cut into 6 inch (15 cm)Flange Isolating Gasket Kits.

The Future

Flange Insulation Kit Gasket,High Temperature Flange Insulation Kits's fastest-growing fiber.8 Flange Isolation Kit. 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,6 Flange Insulation Kit, was introduced to the public in 1991. More luxurious and versatile than traditional polyester,Phenolic Flange Insulation Kits. Clothing designers such as Mary McFadden have created a line of clothes using this new form of polyester.Pipeline Flange Insulation Kits, a superfiber material used to make bulletproof vests. This type of polyester may eventually be used as composite materials for cars and airplanes.