Polyester

Background

Crinkled Flexible Graphite Tape, air, water, and petroleum. Developed in a 20th-century laboratory,V-Shape Stainless Steel Metallic Strip Tape for Spiral Wound Gasket. In this reaction,Full Automatic Camprofile Grooving Gasket Making Machine.Camprofile Gasket Grooving Machine.

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

History

In 1926,Progressive Die Stamping Process Parts-based E.I. du Pont de Nemours and Co.Progressive Die Stamping Riveting Parts. This early research, headed by W.H. Carothers,Progressive Die Stamping Spare 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. The company conducted some further developmental work, and in 1951, began to market the fiber under the name Dacron.Single Die Stamping Spare Parts,Single Die Metal Stamping 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 Stamping Drawing 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 Fabrication.

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 Riveting Parts. In this process, ethylene is the polymer, the chemical building block of polyester,Alloy Steel Sheet Metal Laser Cutting Spare Parts.

The Manufacturing
Process

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

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

Drying

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

Winding

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

Indoor LTE

Indoor CPE, 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,Dual band LTE. The rope-4G wifi router.

Drawing tow

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

Crimping

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

Setting

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

Cutting

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

The Future

Dual Band CPE,Indoor 4G's fastest-growing fiber.B43 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 CPE, was introduced to the public in 1991. More luxurious and versatile than traditional polyester,4G Wifi. Clothing designers such as Mary McFadden have created a line of clothes using this new form of polyester.4G LTE CAT6 Module, a superfiber material used to make bulletproof vests. This type of polyester may eventually be used as composite materials for cars and airplanes.