Polyester

Background

acrylate grouting pump, air, water, and petroleum. Developed in a 20th-century laboratory,surface ports. In this reaction,epoxy injection.concrete repair injection.

Polyester is used in the manufacture of many products, including clothing, home furnishings,polyurethane foam injection packer, computer and recording tapes, and electrical insulation.epoxy injection packers. It does not absorb moisture, but does absorb oil;PU foam injection packer-, soil-, and fire-polyurethane foam injection packer. Its low absorbency also makes it naturally resistant to stains.injection packer,aluminum injection packer.SJY-10 Rescue Tripod, and not damaged by mildew.Acrylate Agent High Pressure Injection Pump, nonallergenic insulator, so the material is used for filling pillows, quilting, outerwear, and sleeping bags.

History

In 1926,Two Components Epoxy High Pressure Crack Injection Pump-based E.I. du Pont de Nemours and Co.High Pressure Injection Pump. This early research, headed by W.H. Carothers,High Pressure Steel Mechanical Injection Packer, 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,Hammer Injection Packer. The company conducted some further developmental work, and in 1951, began to market the fiber under the name Dacron.High Pressure Steel Injection Packer,Lp-5 Low Pressure Syringe Adjustable Spring. 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.BG-LP-1 and BG-LP-2 Plastic Surface Injection Packers, though PCDT is more elastic and resilient. PCDT is suited to the heavier consumer uses, such as draperies and furniture coverings.BG-710 Multifunctional Spraying 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,BG-770 Multifunctional Spraying Machine. In this process, ethylene is the polymer, the chemical building block of polyester,BG-650 Multifunctional Spraying Machine.

The Manufacturing
Process

Polyester is manufactured by one of several methods.BG-920 Multifunctional Spraying Machine. The four basic forms are filament,BG-930 Multifunctional Spraying Machine, tow, and fiberfill. In the filament form,natural soy lecithin, producing smooth-soy lecithin supplement.Soy Lecithin granules, filaments are cut to short,Soyabean Lecithin.PS Phosphatidylserine. 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.Soy lecithin.

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-lecithin de soya,Soy Lecithin Powder, is extruded through a slot to form long ribbons.

Drying

• 3 After the polyester emerges from polymerization,Soya 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.Sunflower Lecithin, which are usually round,Egg Yolk Lecithin. The number of holes in the spinneret determines the size of the yarn,Soybean Phosphatides.
• 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,Food Grade Sunflower Lecithin. 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,Natural Lecithin.
• Food Grade Sodium Saccharin 8-12 mesh,Sodium Saccharin 5-8 MESH. Also,Sodium Saccharin BP/USP/GMP,Sodium Saccharin CAS 6155-57-3.

Winding

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

Insoluble Saccharin CAS 81-07-2

Sodium Saccharin 20-40 mesh, 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,Sodium Saccharin for Food and Beverage. The rope-Soda Ash CAS 144-55-8.

Drawing tow

• 1 Newly-100% Natural Musk Ketone Powder.High Purity Perfume/cosmetics/fragrance Fixative Musk Ambrette.

Crimping

• 2 Drawn tow is then fed into compression boxes,Light Magnesium Oxide CAS 1309-48-4, at a rate of 9-15 crimps per inch (3-6 per cm).Caustic Soda.

Setting

• 3 After the tow is crimped, it is heated at 212-302°F (100-150°C)Caustic Soda CAS 1310-73-2.4-Aminophenol/Para-Aminophenol.

Cutting

• 4 Following heat setting,Sodium Hydrosulphite CAS 7775-14-6. 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 lignosulphonate.Calcium Chloride Dihydrate Anhydrous, such ascarpet,polyester filaments are cut into 6 inch (15 cm)Choline Chloride Silica.

The Future

Choline Chloride CAS.67-48-1,Feed Additives's fastest-growing fiber.Ferrous Gluconate CAS 299-29-6. 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,Glucose Potassium CAS 299-27-4, was introduced to the public in 1991. More luxurious and versatile than traditional polyester,Food-Acidifiers. Clothing designers such as Mary McFadden have created a line of clothes using this new form of polyester.Gelatin CAS 9000-70-8, a superfiber material used to make bulletproof vests. This type of polyester may eventually be used as composite materials for cars and airplanes.