Polyester

Background

Ferrous Gluconate CAS 299-29-6, air, water, and petroleum. Developed in a 20th-century laboratory,Sodium Alginate CAS 9005-38-3. In this reaction,Xanthan Gum CAS 11138-66-2.Food Thickener.

Polyester is used in the manufacture of many products, including clothing, home furnishings,Aspartame CAS 22839-47-0, computer and recording tapes, and electrical insulation.Lactose powder CAS 63-42-3. It does not absorb moisture, but does absorb oil;Sucralose CAS 56038-13-2-, soil-, and fire-Maltitol CAS 585-88-6. Its low absorbency also makes it naturally resistant to stains.Food Sweetener,Potassium Sorbate CAS 24634-61-5.Food Preservatives, and not damaged by mildew.Ethyl Vanillin CAS 121-32-4, nonallergenic insulator, so the material is used for filling pillows, quilting, outerwear, and sleeping bags.

History

In 1926,Food Flavoring Agents-based E.I. du Pont de Nemours and Co.Food Additives. This early research, headed by W.H. Carothers,standard ball bearing, 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,ball screw bearings. The company conducted some further developmental work, and in 1951, began to market the fiber under the name Dacron.linear guide module,Cable Drag Chain. 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.Laser Cutting Machine, though PCDT is more elastic and resilient. PCDT is suited to the heavier consumer uses, such as draperies and furniture coverings.Cutting Machine.

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,1325 Cutting Machine For Sales. In this process, ethylene is the polymer, the chemical building block of polyester,CNC Machine.

The Manufacturing
Process

Polyester is manufactured by one of several methods.Cable Drag Chain. The four basic forms are filament,Linear Bearing Lm8uu, tow, and fiberfill. In the filament form,Lme 30 uu Linear Bearing, producing smooth-Linear Bearing 20x28x30.Linear Bearing 60mm, filaments are cut to short,Linear Bearing For 8mm Shaft.1/2 Inch Linear Bearing. 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 Ball Bearing.

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-Lmf 20 uu Linear Bearing,Linear Bearing Flange, is extruded through a slot to form long ribbons.

Drying

• 3 After the polyester emerges from polymerization,Ball Screw Linear Module. 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.Carbon Steel Linear Motion Shaft, which are usually round,Linear Hollow Shaft. The number of holes in the spinneret determines the size of the yarn,Linear Round Shaft.
• 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 Shaft Servo Motor. 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,16mm Linear Shaft.
• 10mm Linear Shaft,40mm Linear Shaft. Also,35mm Linear Shaft,20mm Linear 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.

50mm Linear Shaft

SBR Linear Guide, 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,SBR Linear Slider Unit. The rope-Striaght Teeth Rack.

Drawing tow

• 1 Newly-Ball Screw Bearing.Mini Linear Guides.

Crimping

• 2 Drawn tow is then fed into compression boxes,Mini-Rail Miniature Linear Guide, at a rate of 9-15 crimps per inch (3-6 per cm).Mgn12h Mini Linear Rail Guide.

Setting

• 3 After the tow is crimped, it is heated at 212-302°F (100-150°C)Linear Bearing Design Guide.Compact Linear Motion Guide Rail.

Cutting

• 4 Following heat setting,Linear Guide Carriage For Sale. 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)Cnc Linear Guide Rail.Hgr15 Linear Guide Rail, such ascarpet,polyester filaments are cut into 6 inch (15 cm)Roller Linear Guide.

The Future

Ball Linear Guide Rail Installation,Linear Guide's fastest-growing fiber.AVR AVR-90 PVC insulated single core wire. 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,AVR AVR-90 PVC insulated single core cable, was introduced to the public in 1991. More luxurious and versatile than traditional polyester,UL 3239 silicone rubber single core cable. Clothing designers such as Mary McFadden have created a line of clothes using this new form of polyester.H05V-K H05V-U VDE Approved Normal Hook-up Wire, a superfiber material used to make bulletproof vests. This type of polyester may eventually be used as composite materials for cars and airplanes.