Polyester

Background

Caustic Soda CAS 1310-73-2, air, water, and petroleum. Developed in a 20th-century laboratory,Sodium Hydrosulphite. In this reaction,Calcium lignosulphonate.Calcium lignosulphonate CAS 8061-52-7.

Polyester is used in the manufacture of many products, including clothing, home furnishings,Choline Chloride Corn Cob, computer and recording tapes, and electrical insulation.Calcium Gluconate CAS 299-28-5. It does not absorb moisture, but does absorb oil;Ferrous Gluconate CAS 299-29-6-, soil-, and fire-Sodium Alginate CAS 9005-38-3. Its low absorbency also makes it naturally resistant to stains.Xanthan Gum CAS 11138-66-2,Food Thickener.Aspartame CAS 22839-47-0, and not damaged by mildew.Lactose powder CAS 63-42-3, nonallergenic insulator, so the material is used for filling pillows, quilting, outerwear, and sleeping bags.

History

In 1926,Sucralose CAS 56038-13-2-based E.I. du Pont de Nemours and Co.Maltitol CAS 585-88-6. This early research, headed by W.H. Carothers,Food Sweetener, 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,Potassium Sorbate CAS 24634-61-5. The company conducted some further developmental work, and in 1951, began to market the fiber under the name Dacron.Food Preservatives,Ethyl Vanillin CAS 121-32-4. 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 Flavoring Agents, though PCDT is more elastic and resilient. PCDT is suited to the heavier consumer uses, such as draperies and furniture coverings.Food Additives.

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,standard ball bearing. In this process, ethylene is the polymer, the chemical building block of polyester,ball screw bearings.

The Manufacturing
Process

Polyester is manufactured by one of several methods.linear guide module. The four basic forms are filament,Cable Drag Chain, tow, and fiberfill. In the filament form,Laser Cutting Machine, producing smooth-Cutting Machine.1325 Cutting Machine For Sales, filaments are cut to short,CNC Machine.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.Linear Bearing Lm8uu.

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-Lme 30 uu Linear Bearing,Linear Bearing 20x28x30, is extruded through a slot to form long ribbons.

Drying

• 3 After the polyester emerges from polymerization,Linear Bearing 60mm. 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 For 8mm Shaft, which are usually round,1/2 Inch Linear Bearing. The number of holes in the spinneret determines the size of the yarn,Linear Ball 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,Lmf 20 uu Linear Bearing. 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 Flange.
• Ball Screw Linear Module,Carbon Steel Linear Motion Shaft. Also,Linear Hollow Shaft,Linear Round Shaft.

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 Shaft Servo Motor

16mm Linear 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,10mm Linear Shaft. The rope-40mm Linear Shaft.

Drawing tow

• 1 Newly-35mm Linear Shaft.20mm Linear Shaft.

Crimping

• 2 Drawn tow is then fed into compression boxes,50mm Linear Shaft, at a rate of 9-15 crimps per inch (3-6 per cm).SBR Linear Guide.

Setting

• 3 After the tow is crimped, it is heated at 212-302°F (100-150°C)SBR Linear Slider Unit.Striaght Teeth Rack.

Cutting

• 4 Following heat setting,Ball Screw 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)Mini Linear Guides.Mini-Rail Miniature Linear Guide, such ascarpet,polyester filaments are cut into 6 inch (15 cm)Mgn12h Mini Linear Rail Guide.

The Future

Linear Bearing Design Guide,Compact Linear Motion Guide Rail's fastest-growing fiber.Linear Guide Carriage For Sale. 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 Linear Guide Rail, was introduced to the public in 1991. More luxurious and versatile than traditional polyester,Hgr15 Linear Guide Rail. Clothing designers such as Mary McFadden have created a line of clothes using this new form of polyester.Roller Linear Guide, a superfiber material used to make bulletproof vests. This type of polyester may eventually be used as composite materials for cars and airplanes.