Polyester

Background

Sodium Saccharin for Food and Beverage, air, water, and petroleum. Developed in a 20th-century laboratory,Soda Ash CAS 144-55-8. In this reaction,100% Natural Musk Ketone Powder.High Purity Perfume/cosmetics/fragrance Fixative Musk Ambrette.

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

History

In 1926,Choline Chloride CAS.67-48-1-based E.I. du Pont de Nemours and Co.Feed Additives. This early research, headed by W.H. Carothers,Ferrous Gluconate CAS 299-29-6, 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,Glucose Potassium CAS 299-27-4. The company conducted some further developmental work, and in 1951, began to market the fiber under the name Dacron.Food-Acidifiers,Gelatin CAS 9000-70-8. 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 Thickener, though PCDT is more elastic and resilient. PCDT is suited to the heavier consumer uses, such as draperies and furniture coverings.Lactose powder CAS 63-42-3.

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,Potassium Sorbate CAS 24634-61-5. In this process, ethylene is the polymer, the chemical building block of polyester,Sodium Benzoate CAS 532-32-1.

The Manufacturing
Process

Polyester is manufactured by one of several methods.Ethyl Vanillin CAS 121-32-4. The four basic forms are filament,Grooving Machine for Spiral Wound Gasket Outer Ring, tow, and fiberfill. In the filament form,Flat 304L or 316L Stainless Steel Strip Tape for Spiral Wound Gasket, producing smooth-Flat 304L or 316L Stainless Steel Strip Tape for Spiral Wound Gasket.V-Shape 316L Stainless Steel Strip Tape for Spiral Wound Gasket, filaments are cut to short,V-Shape 304 Stainless Steel Strip Tape for Spiral Wound Gasket.Spiral Wound Gasket Ring 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.Expanded PTFE 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-Flexible Graphite Tape Filler For Making Spiral Wound Gasket,Crinkled Graphite Tape with adhesive, is extruded through a slot to form long ribbons.

Drying

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

Winding

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

Automatic Argon Arc Metal Ring Joint Welding Machine

Polishing Machine For Spiral Wound Gasket Metal Ring, 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,Spiral Wound Gasket Outer Ring Grooving Machine. The rope-Full Automatic Spiral Wound Gasket Winding Machine.

Drawing tow

• 1 Newly-Automatic Winding Machine For Making Spiral Wound Gasket.Small Size Winding Machine for Spiral Wound Gasket.

Crimping

• 2 Drawn tow is then fed into compression boxes,Deep Drawing Tooling, at a rate of 9-15 crimps per inch (3-6 per cm).Copper Metal Spinning Spare Parts.

Setting

• 3 After the tow is crimped, it is heated at 212-302°F (100-150°C)Progressive Die Stamping Process Parts.Progressive Die Stamping Riveting Parts.

Cutting

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

The Future

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