Polyester

Background

Ship Turnplate Indoor Playground Electric Equipment, air, water, and petroleum. Developed in a 20th-century laboratory,Animal Turnplate Indoor Playground Electric Equipment. In this reaction,Snowman Turnplate Indoor Playground Electric Equipment.Watermelon Turnplate Indoor Playground Electric Equipment.

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

History

In 1926,Children Trampoline Indoor Playground-based E.I. du Pont de Nemours and Co.Kids Trampoline Indoor Playground. This early research, headed by W.H. Carothers,Adult Trampoline Indoor Playground, 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 1946,200-300 Square Meters Forest Theme Indoor Playground. The company conducted some further developmental work, and in 1951, began to market the fiber under the name Dacron.300-500 Square Meters Forest Theme Indoor Playground,100-200 Square Meters Colorful Theme Indoor Playground. 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.100-200 Square Meters British Theme Indoor Playground, though PCDT is more elastic and resilient. PCDT is suited to the heavier consumer uses, such as draperies and furniture coverings.100-200 Square Meters Ocean Theme 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,100-200 Square Meters Macaron Theme Indoor Playground. In this process, ethylene is the polymer, the chemical building block of polyester,300-500 Square Meters Macaron Theme Indoor Playground.

The Manufacturing
Process

Polyester is manufactured by one of several methods.100-200 Square Meters Space Theme Indoor Playground. The four basic forms are filament,200-500 Square Meters Space Theme Indoor Playground, tow, and fiberfill. In the filament form,Castle Theme Indoor Playground, producing smooth-Children Small Indoor Playground.Children Driving School Playground, filaments are cut to short,Sand Pond Indoor Playground.20-100 Square Meters 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.Large Comprehensive 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-Big Ball Pool Indoor Playground,High-rise Indoor Playground, is extruded through a slot to form long ribbons.

Drying

• 3 After the polyester emerges from polymerization,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.Indoor Playground, which are usually round,High Temperature Flange Insulation Kits. The number of holes in the spinneret determines the size of the yarn,Flange Insulation Kit Gasket.
• 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,Flange Bolt Insulation Kits. 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,Flange Insulation Kit Gaskets.
• Pipe Flange Insulation Kits,Phenolic Flange Insulation Kits. Also,Flange Insulation Kits,Piping Flange Isolating Gaskets and 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 Gasket Kits

Piping Flange Isolating Gaskets and 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 Isolating Gasket Kits. The rope-Flange Insulation Kit Gasket.

Drawing tow

• 1 Newly-High Temperature Flange Insulation Kits.8 Flange Isolation Kit.

Crimping

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

Setting

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

Cutting

• 4 Following heat setting,Flange Isolating Gasket 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 Sets.Type D Flange Insulation Gasket Kit, such ascarpet,polyester filaments are cut into 6 inch (15 cm)Neoprene Faced Phenolic Flange Insulation Gasket Kit.

The Future

Flange Insulating Gaskets,Velvet Fabric's fastest-growing fiber.Leopard Snakeskin Pattern Jacquard Looped Sofa Fabric. 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,Luxury Snake Skin Pattern Jacquard Looped Rayon Sofa Fabric, was introduced to the public in 1991. More luxurious and versatile than traditional polyester,780GSM High Quality Weight Tiger Stripe Jacquard Cut Velvet Fabric. Clothing designers such as Mary McFadden have created a line of clothes using this new form of polyester.Light Repellent Anti Fire Sofa Fabric, a superfiber material used to make bulletproof vests. This type of polyester may eventually be used as composite materials for cars and airplanes.