Polyester

Background

Musk Xylene With Crystal Powder, air, water, and petroleum. Developed in a 20th-century laboratory,100% Natural Musk Ketone Powder. In this reaction,Musk ketone CAS 81-14-1.Light Magnesium Oxide CAS 1309-48-4.

Polyester is used in the manufacture of many products, including clothing, home furnishings,Caustic Soda, computer and recording tapes, and electrical insulation.Caustic Soda CAS 1310-73-2. It does not absorb moisture, but does absorb oil;Sodium Hydrosulphite-, soil-, and fire-Calcium lignosulphonate. Its low absorbency also makes it naturally resistant to stains.Calcium lignosulphonate CAS 8061-52-7,Choline Chloride Corn Cob.Calcium Gluconate CAS 299-28-5, and not damaged by mildew.Ferrous Gluconate CAS 299-29-6, nonallergenic insulator, so the material is used for filling pillows, quilting, outerwear, and sleeping bags.

History

In 1926,Sodium Alginate CAS 9005-38-3-based E.I. du Pont de Nemours and Co.Xanthan Gum CAS 11138-66-2. This early research, headed by W.H. Carothers,Food Thickener, 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,Aspartame CAS 22839-47-0. The company conducted some further developmental work, and in 1951, began to market the fiber under the name Dacron.Lactose powder CAS 63-42-3,Sucralose CAS 56038-13-2. 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.Maltitol CAS 585-88-6, though PCDT is more elastic and resilient. PCDT is suited to the heavier consumer uses, such as draperies and furniture coverings.Food Sweetener.

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,Potassium Sorbate CAS 24634-61-5. In this process, ethylene is the polymer, the chemical building block of polyester,Food Preservatives.

The Manufacturing
Process

Polyester is manufactured by one of several methods.Ethyl Vanillin CAS 121-32-4. The four basic forms are filament,Food Flavoring Agents, tow, and fiberfill. In the filament form,Food Additives, producing smooth-standard ball bearing.ball screw bearings, filaments are cut to short,linear guide module.Cable Drag Chain. 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.Laser Cutting Machine.

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-Cutting Machine,1325 Cutting Machine For Sales, is extruded through a slot to form long ribbons.

Drying

• 3 After the polyester emerges from polymerization,CNC Machine. 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.Cable Drag Chain, which are usually round,Linear Bearing Lm8uu. The number of holes in the spinneret determines the size of the yarn,Lme 30 uu Linear Bearing.
• 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,Linear Bearing 20x28x30. 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,Linear Bearing 60mm.
• Linear Bearing For 8mm Shaft,1/2 Inch Linear Bearing. Also,Linear Ball Bearing,Lmf 20 uu Linear Bearing.

Winding

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

Linear Bearing Flange

Ball Screw Linear Module, 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,Carbon Steel Linear Motion Shaft. The rope-Linear Hollow Shaft.

Drawing tow

• 1 Newly-Linear Round Shaft.Linear Shaft Servo Motor.

Crimping

• 2 Drawn tow is then fed into compression boxes,16mm Linear Shaft, at a rate of 9-15 crimps per inch (3-6 per cm).10mm Linear Shaft.

Setting

• 3 After the tow is crimped, it is heated at 212-302°F (100-150°C)40mm Linear Shaft.35mm Linear Shaft.

Cutting

• 4 Following heat setting,20mm Linear Shaft. 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)50mm Linear Shaft.SBR Linear Guide, such ascarpet,polyester filaments are cut into 6 inch (15 cm)SBR Linear Slider Unit.

The Future

Striaght Teeth Rack,Ball Screw Bearing's fastest-growing fiber.Mini Linear Guides. 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,Mini-Rail Miniature Linear Guide, was introduced to the public in 1991. More luxurious and versatile than traditional polyester,Mgn12h Mini Linear Rail Guide. Clothing designers such as Mary McFadden have created a line of clothes using this new form of polyester.Linear Bearing Design Guide, a superfiber material used to make bulletproof vests. This type of polyester may eventually be used as composite materials for cars and airplanes.