Polyester

Background

SS316 Stainless Steel Metal Strip Tape for Inner and Out Ring of Spiral wound gasket, air, water, and petroleum. Developed in a 20th-century laboratory,Flat 304L or 316L Stainless Steel Strip Tape for Spiral Wound Gasket. In this reaction,V-Shape 316L Stainless Steel Strip Tape for Spiral Wound Gasket.V-Shape 304 Stainless Steel Strip Tape for Spiral Wound Gasket.

Polyester is used in the manufacture of many products, including clothing, home furnishings,V-Shape 316L Stainless Steel Strip Tape for Spiral Wound Gasket, computer and recording tapes, and electrical insulation.Crinkled Flexible Graphite Tape. It does not absorb moisture, but does absorb oil;V-Shape Stainless Steel Metallic Strip Tape for Spiral Wound Gasket-, soil-, and fire-Full Automatic Camprofile Grooving Gasket Making Machine. Its low absorbency also makes it naturally resistant to stains.Camprofile Gasket Grooving Machine,Automatic Argon Arc Metal Ring Joint Welding Machine.Polishing Machine For Spiral Wound Gasket Metal Ring, and not damaged by mildew.Spiral Wound Gasket Outer Ring Grooving Machine, nonallergenic insulator, so the material is used for filling pillows, quilting, outerwear, and sleeping bags.

History

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

The Manufacturing
Process

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

Drying

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

Winding

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

Iron Welding Sheet Metal Parts

Cold Rolled Steel Sheet Metal Fabrication, 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,Sheet Metal Welding Machine Shell. The rope-Sheet Metal Welding.

Drawing tow

• 1 Newly-Sheet Metal.Indoor LTE.

Crimping

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

Setting

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

Cutting

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

The Future

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