Polyester

Background

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

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

History

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

The Manufacturing
Process

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

Drying

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

Winding

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

Flange Insulation Kit Gasket

Flange Bolt Insulation Kits, 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,Flange Insulation Kit Gaskets. The rope-Pipe Flange Insulation Kits.

Drawing tow

• 1 Newly-Phenolic Flange Insulation Kits.Flange Insulation Kits.

Crimping

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

Setting

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

Cutting

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

The Future

Phenolic Flange Insulation Kits,Pipeline Flange Insulation Kits's fastest-growing fiber.Phenolic Flange Insulation 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 Isolating Gasket Kits, was introduced to the public in 1991. More luxurious and versatile than traditional polyester,Flange Insulation Gasket Sets. Clothing designers such as Mary McFadden have created a line of clothes using this new form of polyester.Type D 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.