Polyester

Background

V-Shape 304 Stainless Steel Strip Tape for Spiral Wound Gasket, air, water, and petroleum. Developed in a 20th-century laboratory,V-Shape 316L Stainless Steel Strip Tape for Spiral Wound Gasket. In this reaction,Crinkled Flexible Graphite Tape.V-Shape Stainless Steel Metallic Strip Tape for Spiral Wound Gasket.

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

History

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

The Manufacturing
Process

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

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-Stainless Steel Sheet Metal Bending Processing,Aluminum Bending Sheet Metal Parts, is extruded through a slot to form long ribbons.

Drying

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

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 Welding

Sheet Metal, 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 LTE. The rope-Indoor CPE.

Drawing tow

• 1 Newly-Dual band LTE.4G wifi router.

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 outdoor CPE.

Setting

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

Cutting

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

The Future

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