Polyester

Background

Choline Chloride CAS.67-48-1, air, water, and petroleum. Developed in a 20th-century laboratory,Feed Additives. In this reaction,Ferrous Gluconate CAS 299-29-6.Glucose Potassium CAS 299-27-4.

Polyester is used in the manufacture of many products, including clothing, home furnishings,Food-Acidifiers, computer and recording tapes, and electrical insulation.Gelatin CAS 9000-70-8. It does not absorb moisture, but does absorb oil;Food Thickener-, soil-, and fire-Lactose powder CAS 63-42-3. Its low absorbency also makes it naturally resistant to stains.Potassium Sorbate CAS 24634-61-5,Sodium Benzoate CAS 532-32-1.Ethyl Vanillin CAS 121-32-4, and not damaged by mildew.Grooving Machine for Spiral Wound Gasket Outer Ring, nonallergenic insulator, so the material is used for filling pillows, quilting, outerwear, and sleeping bags.

History

In 1926,Flat 304L or 316L Stainless Steel Strip Tape for 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.Spiral Wound Gasket Ring Making machine,Expanded PTFE Tape 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.Flexible Graphite Tape Filler 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.Crinkled Graphite Tape with adhesive.

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,SS304 Stainless Steel Metal Strip Tape for Inner and Out Ring of Spiral wound gasket. In this process, ethylene is the polymer, the chemical building block of polyester,SS316 Stainless Steel Metal Strip Tape for Inner and Out Ring of Spiral wound gasket.

The Manufacturing
Process

Polyester is manufactured by one of several methods.Flat 304L or 316L Stainless Steel Strip Tape for Spiral Wound Gasket. The four basic forms are filament,V-Shape 316L Stainless Steel Strip Tape for Spiral Wound Gasket, tow, and fiberfill. In the filament form,V-Shape 304 Stainless Steel Strip Tape for Spiral Wound Gasket, producing smooth-V-Shape 316L Stainless Steel Strip Tape for Spiral Wound Gasket.Crinkled Flexible Graphite Tape, filaments are cut to short,V-Shape Stainless Steel Metallic Strip Tape for Spiral Wound Gasket.Full Automatic Camprofile Grooving Gasket Making Machine. 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.Camprofile Gasket Grooving Machine.

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-Automatic Argon Arc Metal Ring Joint Welding Machine,Polishing Machine For Spiral Wound Gasket Metal Ring, is extruded through a slot to form long ribbons.

Drying

• 3 After the polyester emerges from polymerization,Spiral Wound Gasket Outer Ring Grooving Machine. 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.Full Automatic Spiral Wound Gasket Winding Machine, which are usually round,Automatic Winding Machine For Making Spiral Wound Gasket. The number of holes in the spinneret determines the size of the yarn,Small Size Winding Machine for Spiral Wound Gasket.
• 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,Deep Drawing Tooling. 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,Copper Metal Spinning Spare Parts.
• Progressive Die Stamping Process Parts,Progressive Die Stamping Riveting Parts. Also,Progressive Die Stamping Spare Parts,Progressive Die Stamping.

Winding

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

Single Die Stamping Spare Parts

Single Die Metal Stamping 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,Single Die Stamping Drawing Parts. The rope-Single Die Metal Stamping Fabrication.

Drawing tow

• 1 Newly-Single Die Stamping Riveting Parts.Alloy Steel Sheet Metal Laser Cutting Spare Parts.

Crimping

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

Setting

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

Cutting

• 4 Following heat setting,Sheet Metal U Bending Components. 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)Sheet Metal Bending Process Components.Stainless Steel Sheet Metal Bending Processing, such ascarpet,polyester filaments are cut into 6 inch (15 cm)Aluminum Bending Sheet Metal Parts.

The Future

Sheet Metal Iron Bending Panel,Industrial Sheet Metal Bending Brackets's fastest-growing fiber.Sheet Metal Bending Spare Parts. 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,Sheet Metal Argon Arc Welding Parts, was introduced to the public in 1991. More luxurious and versatile than traditional polyester,Arc Welding Sheet Metal Processing. Clothing designers such as Mary McFadden have created a line of clothes using this new form of polyester.Mild Steel Sheet Metal Welding Parts, a superfiber material used to make bulletproof vests. This type of polyester may eventually be used as composite materials for cars and airplanes.