Polyester

Background

BG-710 Multifunctional Spraying Machine, air, water, and petroleum. Developed in a 20th-century laboratory,BG-780 Multifunctional Spraying Machine. In this reaction,BG-830 Multifunctional Spraying Machine.BG-860 Multifunctional Spraying Machine.

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

History

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

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,Sunflower Lecithin. In this process, ethylene is the polymer, the chemical building block of polyester,Food Grade Sunflower Lecithin.

The Manufacturing
Process

Polyester is manufactured by one of several methods.Natural Lecithin. The four basic forms are filament,Sodium Saccharin BP/USP/GMP, tow, and fiberfill. In the filament form,Sodium Saccharin CAS 6155-57-3, producing smooth-Sodium Saccharin 40-80 MESH.Anhydrous Sodium Saccharin CAS 128-44-9, filaments are cut to short,Feed Grade Sodium Saccharin.Insoluble Saccharin CAS 81-07-2. 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.Sodium Saccharin for Food and Beverage.

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-Soda ash,Musk Xylene With Crystal Powder, is extruded through a slot to form long ribbons.

Drying

• 3 After the polyester emerges from polymerization,100% Natural Musk Ketone Powder. 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 ketone CAS 81-14-1, which are usually round,Light Magnesium Oxide CAS 1309-48-4. The number of holes in the spinneret determines the size of the yarn,Caustic Soda.
• 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,Caustic Soda CAS 1310-73-2. 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 Hydrosulphite.
• Calcium lignosulphonate,Calcium lignosulphonate CAS 8061-52-7. Also,Choline Chloride Corn Cob,Calcium Gluconate CAS 299-28-5.

Winding

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

Ferrous Gluconate CAS 299-29-6

Sodium Alginate CAS 9005-38-3, 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,Xanthan Gum CAS 11138-66-2. The rope-Food Thickener.

Drawing tow

• 1 Newly-Aspartame CAS 22839-47-0.Lactose powder CAS 63-42-3.

Crimping

• 2 Drawn tow is then fed into compression boxes,Sucralose CAS 56038-13-2, at a rate of 9-15 crimps per inch (3-6 per cm).Maltitol CAS 585-88-6.

Setting

• 3 After the tow is crimped, it is heated at 212-302°F (100-150°C)Food Sweetener.Potassium Sorbate CAS 24634-61-5.

Cutting

• 4 Following heat setting,Food Preservatives. 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)Ethyl Vanillin CAS 121-32-4.Food Flavoring Agents, such ascarpet,polyester filaments are cut into 6 inch (15 cm)Food Additives.

The Future

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