Polyester

Background

Spiral Wound Gasket Ring Making machine, air, water, and petroleum. Developed in a 20th-century laboratory,Expanded PTFE Tape For Spiral Wound Gasket. In this reaction,Flexible Graphite Tape Filler For Making Spiral Wound Gasket.Crinkled Graphite Tape with adhesive.

Polyester is used in the manufacture of many products, including clothing, home furnishings,SS304 Stainless Steel Metal Strip Tape for Inner and Out Ring of Spiral wound gasket, computer and recording tapes, and electrical insulation.SS316 Stainless Steel Metal Strip Tape for Inner and Out Ring of Spiral wound gasket. It does not absorb moisture, but does absorb oil;Flat 304L or 316L 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.V-Shape 304 Stainless Steel Strip Tape for Spiral Wound Gasket,V-Shape 316L Stainless Steel Strip Tape for Spiral Wound Gasket.Crinkled Flexible Graphite Tape, and not damaged by mildew.V-Shape Stainless Steel Metallic Strip Tape for Spiral Wound Gasket, nonallergenic insulator, so the material is used for filling pillows, quilting, outerwear, and sleeping bags.

History

In 1926,Full Automatic Camprofile Grooving Gasket Making Machine-based E.I. du Pont de Nemours and Co.Camprofile Gasket Grooving Machine. This early research, headed by W.H. Carothers,Automatic Argon Arc Metal Ring Joint Welding 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,Polishing Machine For Spiral Wound Gasket Metal Ring. The company conducted some further developmental work, and in 1951, began to market the fiber under the name Dacron.Spiral Wound Gasket Outer Ring Grooving Machine,Full Automatic Spiral Wound Gasket Winding Machine. 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.Automatic Winding Machine For Making Spiral Wound Gasket, though PCDT is more elastic and resilient. PCDT is suited to the heavier consumer uses, such as draperies and furniture coverings.Small Size Winding Machine for Spiral Wound Gasket.

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,Deep Drawing Tooling. In this process, ethylene is the polymer, the chemical building block of polyester,Copper Metal Spinning Spare Parts.

The Manufacturing
Process

Polyester is manufactured by one of several methods.Progressive Die Stamping Process Parts. The four basic forms are filament,Progressive Die Stamping Riveting Parts, tow, and fiberfill. In the filament form,Progressive Die Stamping Spare Parts, producing smooth-Progressive Die Stamping.Single Die Stamping Spare Parts, filaments are cut to short,Single Die Metal Stamping Parts.Single Die Stamping Drawing 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.Single Die Metal Stamping Fabrication.

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-Single Die Stamping Riveting Parts,Alloy Steel Sheet Metal Laser Cutting Spare Parts, is extruded through a slot to form long ribbons.

Drying

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

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 Bending Spare Parts

Sheet Metal Argon Arc 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,Arc Welding Sheet Metal Processing. The rope-Mild Steel Sheet Metal Welding Parts.

Drawing tow

• 1 Newly-Alloy Steel Sheet Metal Welding Processing.Iron Welding Sheet Metal Parts.

Crimping

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

Setting

• 3 After the tow is crimped, it is heated at 212-302°F (100-150°C)Sheet Metal Welding.Sheet Metal.

Cutting

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

The Future

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