Polyester

Background

Multifunctional Cement Mortar Spraying Machine, air, water, and petroleum. Developed in a 20th-century laboratory,Cement Mortar Spray Machine. In this reaction,Food Additives.PS Phosphatidylserine.

Polyester is used in the manufacture of many products, including clothing, home furnishings,Phosphatidylserine, computer and recording tapes, and electrical insulation.super soya lecithin. It does not absorb moisture, but does absorb oil;Soy Lecithin granules-, soil-, and fire-Soyabean Lecithin. Its low absorbency also makes it naturally resistant to stains.Soy Lecithin Powder,Soya Lecithin.Food Additives, and not damaged by mildew.Natural Phospholipids, 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.Modified Lecithin. This early research, headed by W.H. Carothers,Sunflower 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,Food Grade Sunflower Lecithin. The company conducted some further developmental work, and in 1951, began to market the fiber under the name Dacron.Natural Lecithin,Sodium Saccharin BP/USP/GMP. 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.Sodium Saccharin CAS 6155-57-3, though PCDT is more elastic and resilient. PCDT is suited to the heavier consumer uses, such as draperies and furniture coverings.Sodium Saccharin 40-80 MESH.

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,Anhydrous Sodium Saccharin CAS 128-44-9. In this process, ethylene is the polymer, the chemical building block of polyester,Feed Grade Sodium Saccharin.

The Manufacturing
Process

Polyester is manufactured by one of several methods.Insoluble Saccharin CAS 81-07-2. The four basic forms are filament,Sodium Saccharin for Food and Beverage, tow, and fiberfill. In the filament form,Soda ash, producing smooth-Musk Xylene With Crystal Powder.100% Natural Musk Ketone Powder, filaments are cut to short,Musk ketone CAS 81-14-1.Light Magnesium Oxide CAS 1309-48-4. 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.Caustic Soda.

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-Caustic Soda CAS 1310-73-2,Sodium Hydrosulphite, is extruded through a slot to form long ribbons.

Drying

• 3 After the polyester emerges from polymerization,Calcium lignosulphonate. 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.Calcium lignosulphonate CAS 8061-52-7, which are usually round,Choline Chloride Corn Cob. The number of holes in the spinneret determines the size of the yarn,Calcium Gluconate CAS 299-28-5.
• 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,Ferrous Gluconate CAS 299-29-6. 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 Alginate CAS 9005-38-3.
• Xanthan Gum CAS 11138-66-2,Food Thickener. Also,Aspartame CAS 22839-47-0,Lactose powder CAS 63-42-3.

Winding

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

Sucralose CAS 56038-13-2

Maltitol CAS 585-88-6, 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 Sweetener. The rope-Potassium Sorbate CAS 24634-61-5.

Drawing tow

• 1 Newly-Food Preservatives.Ethyl Vanillin CAS 121-32-4.

Crimping

• 2 Drawn tow is then fed into compression boxes,Food Flavoring Agents, at a rate of 9-15 crimps per inch (3-6 per cm).Food Additives.

Setting

• 3 After the tow is crimped, it is heated at 212-302°F (100-150°C)standard ball bearing.ball screw bearings.

Cutting

• 4 Following heat setting,linear guide module. 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)Cable Drag Chain.Laser Cutting Machine, such ascarpet,polyester filaments are cut into 6 inch (15 cm)Cutting Machine.

The Future

1325 Cutting Machine For Sales,CNC Machine's fastest-growing fiber.Cable Drag Chain. 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 Lm8uu, was introduced to the public in 1991. More luxurious and versatile than traditional polyester,Lme 30 uu Linear Bearing. Clothing designers such as Mary McFadden have created a line of clothes using this new form of polyester.Linear Bearing 20x28x30, a superfiber material used to make bulletproof vests. This type of polyester may eventually be used as composite materials for cars and airplanes.