Polyester

Background

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

Polyester is used in the manufacture of many products, including clothing, home furnishings,Caustic Soda CAS 1310-73-2, computer and recording tapes, and electrical insulation.Sodium Hydrosulphite. It does not absorb moisture, but does absorb oil;Calcium lignosulphonate-, soil-, and fire-Calcium lignosulphonate CAS 8061-52-7. Its low absorbency also makes it naturally resistant to stains.Choline Chloride Corn Cob,Calcium Gluconate CAS 299-28-5.Ferrous Gluconate CAS 299-29-6, and not damaged by mildew.Sodium Alginate CAS 9005-38-3, nonallergenic insulator, so the material is used for filling pillows, quilting, outerwear, and sleeping bags.

History

In 1926,Xanthan Gum CAS 11138-66-2-based E.I. du Pont de Nemours and Co.Food Thickener. This early research, headed by W.H. Carothers,Aspartame CAS 22839-47-0, 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,Lactose powder CAS 63-42-3. The company conducted some further developmental work, and in 1951, began to market the fiber under the name Dacron.Sucralose CAS 56038-13-2,Maltitol CAS 585-88-6. 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.Food Sweetener, though PCDT is more elastic and resilient. PCDT is suited to the heavier consumer uses, such as draperies and furniture coverings.Potassium Sorbate CAS 24634-61-5.

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,Food Preservatives. In this process, ethylene is the polymer, the chemical building block of polyester,Ethyl Vanillin CAS 121-32-4.

The Manufacturing
Process

Polyester is manufactured by one of several methods.Food Flavoring Agents. The four basic forms are filament,Food Additives, tow, and fiberfill. In the filament form,standard ball bearing, producing smooth-ball screw bearings.linear guide module, filaments are cut to short,Cable Drag Chain.Laser Cutting Machine. 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.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-1325 Cutting Machine For Sales,CNC Machine, is extruded through a slot to form long ribbons.

Drying

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

Winding

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

Ball Screw Linear Module

Carbon Steel Linear Motion Shaft, 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,Linear Hollow Shaft. The rope-Linear Round Shaft.

Drawing tow

• 1 Newly-Linear Shaft Servo Motor.16mm Linear Shaft.

Crimping

• 2 Drawn tow is then fed into compression boxes,10mm Linear Shaft, at a rate of 9-15 crimps per inch (3-6 per cm).40mm Linear Shaft.

Setting

• 3 After the tow is crimped, it is heated at 212-302°F (100-150°C)35mm Linear Shaft.20mm Linear Shaft.

Cutting

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

The Future

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