Polyester

Background

Glucose Potassium CAS 299-27-4, air, water, and petroleum. Developed in a 20th-century laboratory,Food-Acidifiers. In this reaction,Gelatin CAS 9000-70-8.Food Thickener.

Polyester is used in the manufacture of many products, including clothing, home furnishings,Lactose powder CAS 63-42-3, computer and recording tapes, and electrical insulation.Potassium Sorbate CAS 24634-61-5. It does not absorb moisture, but does absorb oil;Sodium Benzoate CAS 532-32-1-, soil-, and fire-Ethyl Vanillin CAS 121-32-4. Its low absorbency also makes it naturally resistant to stains.Grooving Machine for Spiral Wound Gasket Outer Ring,Flat 304L or 316L Stainless Steel Strip Tape for Spiral Wound Gasket.Flat 304L or 316L Stainless Steel Strip Tape for Spiral Wound Gasket, and not damaged by mildew.V-Shape 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 304 Stainless Steel Strip Tape for Spiral Wound Gasket-based E.I. du Pont de Nemours and Co.Spiral Wound Gasket Ring Making machine. This early research, headed by W.H. Carothers,Expanded PTFE 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,Flexible Graphite Tape Filler For Making Spiral Wound Gasket. The company conducted some further developmental work, and in 1951, began to market the fiber under the name Dacron.Crinkled Graphite Tape with adhesive,SS304 Stainless Steel Metal Strip Tape for Inner and Out Ring of 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.SS316 Stainless Steel Metal Strip Tape for Inner and Out Ring of Spiral wound gasket, though PCDT is more elastic and resilient. PCDT is suited to the heavier consumer uses, such as draperies and furniture coverings.Flat 304L or 316L Stainless Steel Strip Tape 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,V-Shape 316L Stainless Steel Strip Tape for Spiral Wound Gasket. In this process, ethylene is the polymer, the chemical building block of polyester,V-Shape 304 Stainless Steel Strip Tape for Spiral Wound Gasket.

The Manufacturing
Process

Polyester is manufactured by one of several methods.V-Shape 316L Stainless Steel Strip Tape for Spiral Wound Gasket. The four basic forms are filament,Crinkled Flexible Graphite Tape, tow, and fiberfill. In the filament form,V-Shape Stainless Steel Metallic Strip Tape for Spiral Wound Gasket, producing smooth-Full Automatic Camprofile Grooving Gasket Making Machine.Camprofile Gasket Grooving Machine, filaments are cut to short,Automatic Argon Arc Metal Ring Joint Welding Machine.Polishing Machine For Spiral Wound Gasket Metal Ring. 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.Spiral Wound Gasket Outer Ring 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-Full Automatic Spiral Wound Gasket Winding Machine,Automatic Winding Machine For Making Spiral Wound Gasket, is extruded through a slot to form long ribbons.

Drying

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

Single Die Metal Stamping Fabrication

Single Die Stamping Riveting 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,Alloy Steel Sheet Metal Laser Cutting Spare Parts. The rope-Carbon Steel Sheet Metal Laser Cutting Components.

Drawing tow

• 1 Newly-Sheet Metal Laser Cutting.Bending Corrugated Sheet Metal Parts.

Crimping

• 2 Drawn tow is then fed into compression boxes,Air Bending Sheet Metal Processing, at a rate of 9-15 crimps per inch (3-6 per cm).Sheet Metal U Bending Components.

Setting

• 3 After the tow is crimped, it is heated at 212-302°F (100-150°C)Sheet Metal Bending Process Components.Stainless Steel Sheet Metal Bending Processing.

Cutting

• 4 Following heat setting,Aluminum Bending 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)Sheet Metal Iron Bending Panel.Industrial Sheet Metal Bending Brackets, such ascarpet,polyester filaments are cut into 6 inch (15 cm)Sheet Metal Bending Spare Parts.

The Future

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