Polyester

Background

Phosphatidylserine, air, water, and petroleum. Developed in a 20th-century laboratory,super soya lecithin. In this reaction,Soy Lecithin granules.Soyabean Lecithin.

Polyester is used in the manufacture of many products, including clothing, home furnishings,Soy Lecithin Powder, computer and recording tapes, and electrical insulation.Soya Lecithin. It does not absorb moisture, but does absorb oil;Food Additives-, soil-, and fire-Natural Phospholipids. Its low absorbency also makes it naturally resistant to stains.Natural Lecithin,Modified Lecithin.Sunflower Lecithin, and not damaged by mildew.Food Grade Sunflower Lecithin, nonallergenic insulator, so the material is used for filling pillows, quilting, outerwear, and sleeping bags.

History

In 1926,Natural Lecithin-based E.I. du Pont de Nemours and Co.Sodium Saccharin BP/USP/GMP. This early research, headed by W.H. Carothers,Sodium Saccharin CAS 6155-57-3, 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,Sodium Saccharin 40-80 MESH. The company conducted some further developmental work, and in 1951, began to market the fiber under the name Dacron.Anhydrous Sodium Saccharin CAS 128-44-9,Feed Grade Sodium Saccharin. 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.Insoluble Saccharin CAS 81-07-2, though PCDT is more elastic and resilient. PCDT is suited to the heavier consumer uses, such as draperies and furniture coverings.Sodium Saccharin for Food and Beverage.

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,Soda ash. In this process, ethylene is the polymer, the chemical building block of polyester,Musk Xylene With Crystal Powder.

The Manufacturing
Process

Polyester is manufactured by one of several methods.100% Natural Musk Ketone Powder. The four basic forms are filament,Musk ketone CAS 81-14-1, tow, and fiberfill. In the filament form,Light Magnesium Oxide CAS 1309-48-4, producing smooth-Caustic Soda.Caustic Soda CAS 1310-73-2, filaments are cut to short,Sodium Hydrosulphite.Calcium lignosulphonate. 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.Calcium lignosulphonate CAS 8061-52-7.

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-Choline Chloride Corn Cob,Calcium Gluconate CAS 299-28-5, is extruded through a slot to form long ribbons.

Drying

• 3 After the polyester emerges from polymerization,Ferrous Gluconate CAS 299-29-6. 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.Sodium Alginate CAS 9005-38-3, which are usually round,Xanthan Gum CAS 11138-66-2. The number of holes in the spinneret determines the size of the yarn,Food Thickener.
• 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,Aspartame CAS 22839-47-0. 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,Lactose powder CAS 63-42-3.
• Sucralose CAS 56038-13-2,Maltitol CAS 585-88-6. Also,Food Sweetener,Potassium Sorbate CAS 24634-61-5.

Winding

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

Food Preservatives

Ethyl Vanillin CAS 121-32-4, 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,Food Flavoring Agents. The rope-Food Additives.

Drawing tow

• 1 Newly-standard ball bearing.ball screw bearings.

Crimping

• 2 Drawn tow is then fed into compression boxes,linear guide module, at a rate of 9-15 crimps per inch (3-6 per cm).Cable Drag Chain.

Setting

• 3 After the tow is crimped, it is heated at 212-302°F (100-150°C)Laser Cutting Machine.Cutting Machine.

Cutting

• 4 Following heat setting,1325 Cutting Machine For Sales. 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)CNC Machine.Cable Drag Chain, such ascarpet,polyester filaments are cut into 6 inch (15 cm)Linear Bearing Lm8uu.

The Future

Lme 30 uu Linear Bearing,Linear Bearing 20x28x30's fastest-growing fiber.Linear Bearing 60mm. 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,Linear Bearing For 8mm Shaft, was introduced to the public in 1991. More luxurious and versatile than traditional polyester,1/2 Inch Linear Bearing. Clothing designers such as Mary McFadden have created a line of clothes using this new form of polyester.Linear Ball Bearing, a superfiber material used to make bulletproof vests. This type of polyester may eventually be used as composite materials for cars and airplanes.