Polyester

Background

Grooving Machine for Spiral Wound Gasket Outer Ring, 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,Flat 304L or 316L Stainless Steel Strip Tape for Spiral Wound Gasket.V-Shape 316L Stainless Steel Strip Tape for Spiral Wound Gasket.

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

History

In 1926,V-Shape 316L Stainless Steel Strip Tape for Spiral Wound Gasket-based E.I. du Pont de Nemours and Co.V-Shape 304 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,Crinkled Flexible Graphite Tape. The company conducted some further developmental work, and in 1951, began to market the fiber under the name Dacron.V-Shape Stainless Steel Metallic Strip Tape for Spiral Wound Gasket,Full Automatic Camprofile Grooving Gasket Making 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.Camprofile Gasket Grooving Machine, though PCDT is more elastic and resilient. PCDT is suited to the heavier consumer uses, such as draperies and furniture coverings.Automatic Argon Arc Metal Ring Joint Welding 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,Polishing Machine For Spiral Wound Gasket Metal Ring. In this process, ethylene is the polymer, the chemical building block of polyester,Spiral Wound Gasket Outer Ring Grooving Machine.

The Manufacturing
Process

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

Drying

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

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 Process Components

Stainless Steel Sheet Metal Bending Processing, 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,Aluminum Bending Sheet Metal Parts. The rope-Sheet Metal Iron Bending Panel.

Drawing tow

• 1 Newly-Industrial Sheet Metal Bending Brackets.Sheet Metal Bending Spare Parts.

Crimping

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

Setting

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

Cutting

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

The Future

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