Polyester

Background

BG-LP-1 and BG-LP-2 Plastic Surface Injection Packers, air, water, and petroleum. Developed in a 20th-century laboratory,Low Pressure Epoxy Syringe Injectior. In this reaction,BG-710 Multifunctional Spraying Machine.BG-780 Multifunctional Spraying Machine.

Polyester is used in the manufacture of many products, including clothing, home furnishings,BG-830 Multifunctional Spraying Machine, computer and recording tapes, and electrical insulation.BG-860 Multifunctional Spraying Machine. It does not absorb moisture, but does absorb oil;BG-870 Multifunctional Spraying Machine-, soil-, and fire-BG-930 Multifunctional Spraying Machine. Its low absorbency also makes it naturally resistant to stains.Multifunctional Cement Mortar Spraying Machine,Cement Mortar Spray Machine.Food Additives, and not damaged by mildew.PS Phosphatidylserine, nonallergenic insulator, so the material is used for filling pillows, quilting, outerwear, and sleeping bags.

History

In 1926,Phosphatidylserine-based E.I. du Pont de Nemours and Co.super soya lecithin. This early research, headed by W.H. Carothers,Soy Lecithin granules, 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,Soyabean Lecithin. The company conducted some further developmental work, and in 1951, began to market the fiber under the name Dacron.Soy Lecithin Powder,Soya Lecithin. 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 Additives, though PCDT is more elastic and resilient. PCDT is suited to the heavier consumer uses, such as draperies and furniture coverings.Natural Phospholipids.

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,Natural Lecithin. In this process, ethylene is the polymer, the chemical building block of polyester,Modified Lecithin.

The Manufacturing
Process

Polyester is manufactured by one of several methods.Sunflower Lecithin. The four basic forms are filament,Food Grade Sunflower Lecithin, tow, and fiberfill. In the filament form,Natural Lecithin, producing smooth-Sodium Saccharin BP/USP/GMP.Sodium Saccharin CAS 6155-57-3, filaments are cut to short,Sodium Saccharin 40-80 MESH.Anhydrous Sodium Saccharin CAS 128-44-9. 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.Feed Grade Sodium Saccharin.

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-Insoluble Saccharin CAS 81-07-2,Sodium Saccharin for Food and Beverage, is extruded through a slot to form long ribbons.

Drying

• 3 After the polyester emerges from polymerization,Soda ash. 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.Musk Xylene With Crystal Powder, which are usually round,100% Natural Musk Ketone Powder. The number of holes in the spinneret determines the size of the yarn,Musk ketone CAS 81-14-1.
• 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,Light Magnesium Oxide CAS 1309-48-4. 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,Caustic Soda.
• Caustic Soda CAS 1310-73-2,Sodium Hydrosulphite. Also,Calcium lignosulphonate,Calcium lignosulphonate CAS 8061-52-7.

Winding

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

Choline Chloride Corn Cob

Calcium Gluconate CAS 299-28-5, 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,Ferrous Gluconate CAS 299-29-6. The rope-Sodium Alginate CAS 9005-38-3.

Drawing tow

• 1 Newly-Xanthan Gum CAS 11138-66-2.Food Thickener.

Crimping

• 2 Drawn tow is then fed into compression boxes,Aspartame CAS 22839-47-0, at a rate of 9-15 crimps per inch (3-6 per cm).Lactose powder CAS 63-42-3.

Setting

• 3 After the tow is crimped, it is heated at 212-302°F (100-150°C)Sucralose CAS 56038-13-2.Maltitol CAS 585-88-6.

Cutting

• 4 Following heat setting,Food Sweetener. 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)Potassium Sorbate CAS 24634-61-5.Food Preservatives, such ascarpet,polyester filaments are cut into 6 inch (15 cm)Ethyl Vanillin CAS 121-32-4.

The Future

Food Flavoring Agents,Food Additives's fastest-growing fiber.standard ball bearing. 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,ball screw bearings, was introduced to the public in 1991. More luxurious and versatile than traditional polyester,linear guide module. Clothing designers such as Mary McFadden have created a line of clothes using this new form of polyester.Cable Drag Chain, a superfiber material used to make bulletproof vests. This type of polyester may eventually be used as composite materials for cars and airplanes.