Polyester

Background

V-Shape 304 Stainless Steel Strip Tape for Spiral Wound Gasket, air, water, and petroleum. Developed in a 20th-century laboratory,Spiral Wound Gasket Ring Making machine. In this reaction,Expanded PTFE Tape For Spiral Wound Gasket.Flexible Graphite Tape Filler For Making Spiral Wound Gasket.

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

History

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

The Manufacturing
Process

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

Drying

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

Winding

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

Industrial Sheet Metal Bending Brackets

Sheet Metal Bending Spare 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,Sheet Metal Argon Arc Welding Parts. The rope-Arc Welding Sheet Metal Processing.

Drawing tow

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

Crimping

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

Setting

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

Cutting

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

The Future

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