Polyester

Background

Sodium Benzoate CAS 532-32-1, air, water, and petroleum. Developed in a 20th-century laboratory,Ethyl Vanillin CAS 121-32-4. In this reaction,Grooving Machine for Spiral Wound Gasket Outer Ring.Flat 304L or 316L Stainless Steel Strip Tape for 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-Spiral Wound Gasket Ring Making machine. Its low absorbency also makes it naturally resistant to stains.Expanded PTFE Tape For Spiral Wound Gasket,Flexible Graphite Tape Filler For Making Spiral Wound Gasket.Crinkled Graphite Tape with adhesive, and not damaged by mildew.SS304 Stainless Steel Metal Strip Tape for Inner and Out Ring of Spiral wound gasket, nonallergenic insulator, so the material is used for filling pillows, quilting, outerwear, and sleeping bags.

History

In 1926,SS316 Stainless Steel Metal Strip Tape for Inner and Out Ring of Spiral wound gasket-based E.I. du Pont de Nemours and Co.Flat 304L or 316L Stainless Steel Strip Tape for Spiral Wound Gasket. This early research, headed by W.H. Carothers,V-Shape 316L Stainless Steel Strip Tape 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,V-Shape 304 Stainless Steel Strip Tape for Spiral Wound Gasket. The company conducted some further developmental work, and in 1951, began to market the fiber under the name Dacron.V-Shape 316L Stainless Steel Strip Tape for Spiral Wound Gasket,Crinkled Flexible Graphite Tape. 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.V-Shape Stainless Steel Metallic Strip Tape for Spiral Wound Gasket, though PCDT is more elastic and resilient. PCDT is suited to the heavier consumer uses, such as draperies and furniture coverings.Full Automatic Camprofile Grooving Gasket Making Machine.

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,Camprofile Gasket Grooving Machine. In this process, ethylene is the polymer, the chemical building block of polyester,Automatic Argon Arc Metal Ring Joint Welding Machine.

The Manufacturing
Process

Polyester is manufactured by one of several methods.Polishing Machine For Spiral Wound Gasket Metal Ring. The four basic forms are filament,Spiral Wound Gasket Outer Ring Grooving Machine, tow, and fiberfill. In the filament form,Full Automatic Spiral Wound Gasket Winding Machine, producing smooth-Automatic Winding Machine For Making Spiral Wound Gasket.Small Size Winding Machine for Spiral Wound Gasket, filaments are cut to short,Deep Drawing Tooling.Copper Metal Spinning Spare 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.Progressive Die Stamping Process 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-Progressive Die Stamping Riveting Parts,Progressive Die Stamping Spare Parts, is extruded through a slot to form long ribbons.

Drying

• 3 After the polyester emerges from polymerization,Progressive Die Stamping. 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.Single Die Stamping Spare Parts, which are usually round,Single Die Metal Stamping Parts. The number of holes in the spinneret determines the size of the yarn,Single Die Stamping Drawing 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,Single Die Metal Stamping Fabrication. 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,Single Die Stamping Riveting Parts.
• Alloy Steel Sheet Metal Laser Cutting Spare Parts,Carbon Steel Sheet Metal Laser Cutting Components. Also,Sheet Metal Laser Cutting,Bending Corrugated Sheet Metal 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.

Air Bending Sheet Metal Processing

Sheet Metal U Bending Components, 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 Bending Process Components. The rope-Stainless Steel Sheet Metal Bending Processing.

Drawing tow

• 1 Newly-Aluminum Bending Sheet Metal Parts.Sheet Metal Iron Bending Panel.

Crimping

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

Setting

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

Cutting

• 4 Following heat setting,Mild Steel Sheet Metal Welding Parts. 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)Alloy Steel Sheet Metal Welding Processing.Iron Welding Sheet Metal Parts, such ascarpet,polyester filaments are cut into 6 inch (15 cm)Cold Rolled Steel Sheet Metal Fabrication.

The Future

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