Polyester

Background

BG-870 Multifunctional Spraying Machine, air, water, and petroleum. Developed in a 20th-century laboratory,BG-930 Multifunctional Spraying Machine. In this reaction,Multifunctional Cement Mortar Spraying Machine.Cement Mortar Spray Machine.

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

History

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

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,Sodium Saccharin CAS 6155-57-3. In this process, ethylene is the polymer, the chemical building block of polyester,Sodium Saccharin 40-80 MESH.

The Manufacturing
Process

Polyester is manufactured by one of several methods.Anhydrous Sodium Saccharin CAS 128-44-9. The four basic forms are filament,Feed Grade Sodium Saccharin, tow, and fiberfill. In the filament form,Insoluble Saccharin CAS 81-07-2, producing smooth-Sodium Saccharin for Food and Beverage.Soda ash, filaments are cut to short,Musk Xylene With Crystal Powder.100% Natural Musk Ketone Powder. 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.Musk ketone CAS 81-14-1.

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-Light Magnesium Oxide CAS 1309-48-4,Caustic Soda, is extruded through a slot to form long ribbons.

Drying

• 3 After the polyester emerges from polymerization,Caustic Soda CAS 1310-73-2. 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 Hydrosulphite, which are usually round,Calcium lignosulphonate. The number of holes in the spinneret determines the size of the yarn,Calcium lignosulphonate CAS 8061-52-7.
• 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,Choline Chloride Corn Cob. 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,Calcium Gluconate CAS 299-28-5.
• Ferrous Gluconate CAS 299-29-6,Sodium Alginate CAS 9005-38-3. Also,Xanthan Gum CAS 11138-66-2,Food Thickener.

Winding

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

Aspartame CAS 22839-47-0

Lactose powder CAS 63-42-3, 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,Sucralose CAS 56038-13-2. The rope-Maltitol CAS 585-88-6.

Drawing tow

• 1 Newly-Food Sweetener.Potassium Sorbate CAS 24634-61-5.

Crimping

• 2 Drawn tow is then fed into compression boxes,Food Preservatives, at a rate of 9-15 crimps per inch (3-6 per cm).Ethyl Vanillin CAS 121-32-4.

Setting

• 3 After the tow is crimped, it is heated at 212-302°F (100-150°C)Food Flavoring Agents.Food Additives.

Cutting

• 4 Following heat setting,standard ball bearing. 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)ball screw bearings.linear guide module, such ascarpet,polyester filaments are cut into 6 inch (15 cm)Cable Drag Chain.

The Future

Laser Cutting Machine,Cutting Machine's fastest-growing fiber.1325 Cutting Machine For Sales. 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,CNC Machine, was introduced to the public in 1991. More luxurious and versatile than traditional polyester,Cable Drag Chain. Clothing designers such as Mary McFadden have created a line of clothes using this new form of polyester.Linear Bearing Lm8uu, a superfiber material used to make bulletproof vests. This type of polyester may eventually be used as composite materials for cars and airplanes.