Polyester

Background

Acrylate Agent High Pressure Injection Pump, air, water, and petroleum. Developed in a 20th-century laboratory,Polyurethane High Pressure Crack Injection Pump. In this reaction,High Pressure Injection Pump.High Pressure Steel Mechanical Injection Packer.

Polyester is used in the manufacture of many products, including clothing, home furnishings,Hammer Injection Packer, computer and recording tapes, and electrical insulation.Aluminum Injection Packers. It does not absorb moisture, but does absorb oil;150MM High Pressure Steel Mechanical Injection Packer. New Nitrile Rubber-, soil-, and fire-Waterproof Injection Packer. Its low absorbency also makes it naturally resistant to stains.Lp-5 Low Pressure Syringe Adjustable Spring,LP-3 Rubber low pressure syringe.BG-LP-1 and BG-LP-2 Plastic Surface Injection Packers, and not damaged by mildew.Low Pressure Epoxy Syringe Injectior, nonallergenic insulator, so the material is used for filling pillows, quilting, outerwear, and sleeping bags.

History

In 1926,BG-710 Multifunctional Spraying Machine-based E.I. du Pont de Nemours and Co.BG-780 Multifunctional Spraying Machine. This early research, headed by W.H. Carothers,BG-830 Multifunctional Spraying Machine, 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,BG-860 Multifunctional Spraying Machine. The company conducted some further developmental work, and in 1951, began to market the fiber under the name Dacron.BG-870 Multifunctional Spraying Machine,BG-930 Multifunctional Spraying 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.Multifunctional Cement Mortar Spraying Machine, though PCDT is more elastic and resilient. PCDT is suited to the heavier consumer uses, such as draperies and furniture coverings.Cement Mortar Spray 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,Food Additives. In this process, ethylene is the polymer, the chemical building block of polyester,PS Phosphatidylserine.

The Manufacturing
Process

Polyester is manufactured by one of several methods.Phosphatidylserine. The four basic forms are filament,super soya lecithin, tow, and fiberfill. In the filament form,Soy Lecithin granules, producing smooth-Soyabean Lecithin.Soy Lecithin Powder, filaments are cut to short,Soya Lecithin.Food Additives. 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.Natural Phospholipids.

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-Natural Lecithin,Modified Lecithin, is extruded through a slot to form long ribbons.

Drying

• 3 After the polyester emerges from polymerization,Sunflower Lecithin. 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.Food Grade Sunflower Lecithin, which are usually round,Natural Lecithin. The number of holes in the spinneret determines the size of the yarn,Sodium Saccharin BP/USP/GMP.
• 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,Sodium Saccharin CAS 6155-57-3. 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,Sodium Saccharin 40-80 MESH.
• Anhydrous Sodium Saccharin CAS 128-44-9,Feed Grade Sodium Saccharin. Also,Insoluble Saccharin CAS 81-07-2,Sodium Saccharin for Food and Beverage.

Winding

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

Soda ash

Musk Xylene With Crystal Powder, 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,100% Natural Musk Ketone Powder. The rope-Musk ketone CAS 81-14-1.

Drawing tow

• 1 Newly-Light Magnesium Oxide CAS 1309-48-4.Caustic Soda.

Crimping

• 2 Drawn tow is then fed into compression boxes,Caustic Soda CAS 1310-73-2, at a rate of 9-15 crimps per inch (3-6 per cm).Sodium Hydrosulphite.

Setting

• 3 After the tow is crimped, it is heated at 212-302°F (100-150°C)Calcium lignosulphonate.Calcium lignosulphonate CAS 8061-52-7.

Cutting

• 4 Following heat setting,Choline Chloride Corn Cob. 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)Calcium Gluconate CAS 299-28-5.Ferrous Gluconate CAS 299-29-6, such ascarpet,polyester filaments are cut into 6 inch (15 cm)Sodium Alginate CAS 9005-38-3.

The Future

Xanthan Gum CAS 11138-66-2,Food Thickener's fastest-growing fiber.Aspartame CAS 22839-47-0. 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,Lactose powder CAS 63-42-3, was introduced to the public in 1991. More luxurious and versatile than traditional polyester,Sucralose CAS 56038-13-2. Clothing designers such as Mary McFadden have created a line of clothes using this new form of polyester.Maltitol CAS 585-88-6, a superfiber material used to make bulletproof vests. This type of polyester may eventually be used as composite materials for cars and airplanes.