Polyester

Background

Flexible Graphite Tape Filler For Making Spiral Wound Gasket, air, water, and petroleum. Developed in a 20th-century laboratory,Crinkled Graphite Tape with adhesive. In this reaction,SS304 Stainless Steel Metal Strip Tape for Inner and Out Ring of Spiral wound gasket.SS316 Stainless Steel Metal Strip Tape for Inner and Out Ring of Spiral wound gasket.

Polyester is used in the manufacture of many products, including clothing, home furnishings,Flat 304L or 316L Stainless Steel Strip Tape for Spiral Wound Gasket, computer and recording tapes, and electrical insulation.V-Shape 316L Stainless Steel Strip Tape for Spiral Wound Gasket. It does not absorb moisture, but does absorb oil;V-Shape 304 Stainless Steel Strip Tape for Spiral Wound Gasket-, soil-, and fire-V-Shape 316L Stainless Steel Strip Tape for Spiral Wound Gasket. Its low absorbency also makes it naturally resistant to stains.Crinkled Flexible Graphite Tape,V-Shape Stainless Steel Metallic Strip Tape for Spiral Wound Gasket.Full Automatic Camprofile Grooving Gasket Making Machine, and not damaged by mildew.Camprofile Gasket Grooving Machine, nonallergenic insulator, so the material is used for filling pillows, quilting, outerwear, and sleeping bags.

History

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

The Manufacturing
Process

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

Drying

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

Winding

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

Arc Welding Sheet Metal Processing

Mild Steel Sheet Metal Welding Parts, 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,Alloy Steel Sheet Metal Welding Processing. The rope-Iron Welding Sheet Metal Parts.

Drawing tow

• 1 Newly-Cold Rolled Steel Sheet Metal Fabrication.Sheet Metal Welding Machine Shell.

Crimping

• 2 Drawn tow is then fed into compression boxes,Sheet Metal Welding, at a rate of 9-15 crimps per inch (3-6 per cm).Sheet Metal.

Setting

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

Cutting

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

The Future

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