Polyester

Background

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Polyester is used in the manufacture of many products, including clothing, home furnishings,Camprofile Gasket Grooving Machine, computer and recording tapes, and electrical insulation.Automatic Argon Arc Metal Ring Joint Welding Machine. It does not absorb moisture, but does absorb oil;Polishing Machine For Spiral Wound Gasket Metal Ring-, soil-, and fire-Spiral Wound Gasket Outer Ring Grooving Machine. Its low absorbency also makes it naturally resistant to stains.Full Automatic Spiral Wound Gasket Winding Machine,Automatic Winding Machine For Making Spiral Wound Gasket.Small Size Winding Machine for Spiral Wound Gasket, and not damaged by mildew.Deep Drawing Tooling, nonallergenic insulator, so the material is used for filling pillows, quilting, outerwear, and sleeping bags.

History

In 1926,Copper Metal Spinning Spare Parts-based E.I. du Pont de Nemours and Co.Progressive Die Stamping Process Parts. This early research, headed by W.H. Carothers,Progressive Die Stamping Riveting Parts, 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,Progressive Die Stamping Spare Parts. The company conducted some further developmental work, and in 1951, began to market the fiber under the name Dacron.Progressive Die Stamping,Single Die Stamping Spare Parts. 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.Single Die Metal Stamping Parts, though PCDT is more elastic and resilient. PCDT is suited to the heavier consumer uses, such as draperies and furniture coverings.Single Die Stamping Drawing Parts.

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,Single Die Metal Stamping Fabrication. In this process, ethylene is the polymer, the chemical building block of polyester,Single Die Stamping Riveting Parts.

The Manufacturing
Process

Polyester is manufactured by one of several methods.Alloy Steel Sheet Metal Laser Cutting Spare Parts. The four basic forms are filament,Carbon Steel Sheet Metal Laser Cutting Components, tow, and fiberfill. In the filament form,Sheet Metal Laser Cutting, producing smooth-Bending Corrugated Sheet Metal Parts.Air Bending Sheet Metal Processing, filaments are cut to short,Sheet Metal U Bending Components.Sheet Metal Bending Process Components. 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.Stainless Steel Sheet Metal Bending Processing.

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-Aluminum Bending Sheet Metal Parts,Sheet Metal Iron Bending Panel, is extruded through a slot to form long ribbons.

Drying

• 3 After the polyester emerges from polymerization,Industrial Sheet Metal Bending Brackets. 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.Sheet Metal Bending Spare Parts, which are usually round,Sheet Metal Argon Arc Welding Parts. The number of holes in the spinneret determines the size of the yarn,Arc Welding Sheet Metal Processing.
• 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,Mild Steel Sheet Metal Welding Parts. 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,Alloy Steel Sheet Metal Welding Processing.
• Iron Welding Sheet Metal Parts,Cold Rolled Steel Sheet Metal Fabrication. Also,Sheet Metal Welding Machine Shell,Sheet Metal Welding.

Winding

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

Sheet Metal

Indoor LTE, 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 CPE. The rope-Dual band LTE.

Drawing tow

• 1 Newly-4G wifi router.4G outdoor CPE.

Crimping

• 2 Drawn tow is then fed into compression boxes,4G outdoor CPE, at a rate of 9-15 crimps per inch (3-6 per cm).4G CPE.

Setting

• 3 After the tow is crimped, it is heated at 212-302°F (100-150°C)CableFree 4G LTE Indoor CPE.indoor modem wifi.

Cutting

• 4 Following heat setting,indoor 4G LTE. 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)CPE wifi router.4G Router, such ascarpet,polyester filaments are cut into 6 inch (15 cm)CPE router.

The Future

outdoor CPE,Dual Band CPE's fastest-growing fiber.Indoor 4G. 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,B43 CPE, was introduced to the public in 1991. More luxurious and versatile than traditional polyester,Indoor CPE. Clothing designers such as Mary McFadden have created a line of clothes using this new form of polyester.4G Wifi, a superfiber material used to make bulletproof vests. This type of polyester may eventually be used as composite materials for cars and airplanes.