Polyester

Background

Insoluble Saccharin CAS 81-07-2, air, water, and petroleum. Developed in a 20th-century laboratory,Sodium Saccharin 20-40 mesh. In this reaction,Sodium Saccharin for Food and Beverage.Soda Ash CAS 144-55-8.

Polyester is used in the manufacture of many products, including clothing, home furnishings,100% Natural Musk Ketone Powder, computer and recording tapes, and electrical insulation.High Purity Perfume/cosmetics/fragrance Fixative Musk Ambrette. It does not absorb moisture, but does absorb oil;Light Magnesium Oxide CAS 1309-48-4-, soil-, and fire-Caustic Soda. Its low absorbency also makes it naturally resistant to stains.Caustic Soda CAS 1310-73-2,4-Aminophenol/Para-Aminophenol.Sodium Hydrosulphite CAS 7775-14-6, and not damaged by mildew.Calcium lignosulphonate, nonallergenic insulator, so the material is used for filling pillows, quilting, outerwear, and sleeping bags.

History

In 1926,Calcium Chloride Dihydrate Anhydrous-based E.I. du Pont de Nemours and Co.Choline Chloride Silica. This early research, headed by W.H. Carothers,Choline Chloride CAS.67-48-1, 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,Feed Additives. The company conducted some further developmental work, and in 1951, began to market the fiber under the name Dacron.Ferrous Gluconate CAS 299-29-6,Glucose Potassium CAS 299-27-4. 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.Food-Acidifiers, though PCDT is more elastic and resilient. PCDT is suited to the heavier consumer uses, such as draperies and furniture coverings.Gelatin CAS 9000-70-8.

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,Food Thickener. In this process, ethylene is the polymer, the chemical building block of polyester,Lactose powder CAS 63-42-3.

The Manufacturing
Process

Polyester is manufactured by one of several methods.Potassium Sorbate CAS 24634-61-5. The four basic forms are filament,Sodium Benzoate CAS 532-32-1, tow, and fiberfill. In the filament form,Ethyl Vanillin CAS 121-32-4, producing smooth-Grooving Machine for Spiral Wound Gasket Outer Ring.Flat 304L or 316L Stainless Steel Strip Tape for Spiral Wound Gasket, filaments are cut to short,Flat 304L or 316L Stainless Steel Strip Tape for Spiral Wound Gasket.V-Shape 316L Stainless Steel Strip Tape for Spiral Wound Gasket. 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.V-Shape 304 Stainless Steel Strip Tape for Spiral Wound Gasket.

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-Spiral Wound Gasket Ring Making machine,Expanded PTFE Tape For Spiral Wound Gasket, is extruded through a slot to form long ribbons.

Drying

• 3 After the polyester emerges from polymerization,Flexible Graphite Tape Filler For Making 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.Crinkled Graphite Tape with adhesive, which are usually round,SS304 Stainless Steel Metal Strip Tape for Inner and Out Ring of Spiral wound gasket. The number of holes in the spinneret determines the size of the yarn,SS316 Stainless Steel Metal Strip Tape for Inner and Out Ring of 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,Flat 304L or 316L Stainless Steel Strip Tape for Spiral Wound Gasket. 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,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. Also,Crinkled Flexible Graphite Tape,V-Shape Stainless Steel Metallic Strip Tape for Spiral Wound Gasket.

Winding

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

Full Automatic Camprofile Grooving Gasket Making Machine

Camprofile Gasket Grooving Machine, 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,Automatic Argon Arc Metal Ring Joint Welding Machine. The rope-Polishing Machine For Spiral Wound Gasket Metal Ring.

Drawing tow

• 1 Newly-Spiral Wound Gasket Outer Ring Grooving Machine.Full Automatic Spiral Wound Gasket Winding Machine.

Crimping

• 2 Drawn tow is then fed into compression boxes,Automatic Winding Machine For Making Spiral Wound Gasket, at a rate of 9-15 crimps per inch (3-6 per cm).Small Size Winding Machine for Spiral Wound Gasket.

Setting

• 3 After the tow is crimped, it is heated at 212-302°F (100-150°C)Deep Drawing Tooling.Copper Metal Spinning Spare Parts.

Cutting

• 4 Following heat setting,Progressive Die Stamping Process 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)Progressive Die Stamping Riveting Parts.Progressive Die Stamping Spare Parts, such ascarpet,polyester filaments are cut into 6 inch (15 cm)Progressive Die Stamping.

The Future

Single Die Stamping Spare Parts,Single Die Metal Stamping Parts's fastest-growing fiber.Single Die Stamping Drawing 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,Single Die Metal Stamping Fabrication, was introduced to the public in 1991. More luxurious and versatile than traditional polyester,Single Die Stamping Riveting Parts. Clothing designers such as Mary McFadden have created a line of clothes using this new form of polyester.Alloy Steel Sheet Metal Laser Cutting Spare Parts, a superfiber material used to make bulletproof vests. This type of polyester may eventually be used as composite materials for cars and airplanes.