Polyester

Background

Aluminum Tubes, air, water, and petroleum. Developed in a 20th-century laboratory,Aluminum Foil roll. In this reaction,3003 aluminum coil.Aluminum Sheet plate.

Polyester is used in the manufacture of many products, including clothing, home furnishings,Thin Aluminum Strip, computer and recording tapes, and electrical insulation.Pipe Making Machine. It does not absorb moisture, but does absorb oil;Tube Making Machine-, soil-, and fire-Radiator Tube Making Machine. Its low absorbency also makes it naturally resistant to stains.Tube Cutting Machine,Automatic Leak Testing Machine.Vacuum Brazing Furnace, and not damaged by mildew.Continuous Brazing Furnace, nonallergenic insulator, so the material is used for filling pillows, quilting, outerwear, and sleeping bags.

History

In 1926,Heat Treatment Furnace Brazing-based E.I. du Pont de Nemours and Co.Fin Stamping Machine. This early research, headed by W.H. Carothers,Radiator Fin Machine, 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,Oil Cooler for Motorcycle. The company conducted some further developmental work, and in 1951, began to market the fiber under the name Dacron.Oil Cooler Radiator,Stainless Steel Oil Cooler. 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.Plate Fin Oil Cooler, though PCDT is more elastic and resilient. PCDT is suited to the heavier consumer uses, such as draperies and furniture coverings.Tube Belt Oil Cooler.

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,Universal Oil Cooler. In this process, ethylene is the polymer, the chemical building block of polyester,Aluminum Bar and Plate Intercooler.

The Manufacturing
Process

Polyester is manufactured by one of several methods.Universal Front Mount Intercooler. The four basic forms are filament,Aluminum Radiator Core, tow, and fiberfill. In the filament form,Auto Plastic Aluminum Radiator, producing smooth-Radiators with Plastic Tank.All Aluminum Radiator, filaments are cut to short,Cooling System.Aluminum Welded Tube. 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.Radiator aluminum flat tube.

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-Aluminum intercooler rectangular tube,Composite condenser Tube, is extruded through a slot to form long ribbons.

Drying

• 3 After the polyester emerges from polymerization,Heat Sink Aluminum Oil Cooler Tube. 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.Aluminium Multi channel Tube, which are usually round,Extruded Radiator Tubes. The number of holes in the spinneret determines the size of the yarn,High frequency welded condenser tube.
• 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,Aluminium Micro channel Tube. 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,High Frequency Oil Cooler Tube.
• Checker Rubber Floor Mat,Rubber Mat. Also,Black Butyl Rubber Sheet,Skirt Board Rubber.

Winding

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

FDA Rubber Sheet

Food Grade Rubber Sheet, 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,Red Silicone Rubber Sheet. The rope-High Temperature Resistant Silicone Rubber Sheet.

Drawing tow

• 1 Newly-Transparent Silicone Rubber Sheet.High Temperature Resistant EPDM Rubber Sheet.

Crimping

• 2 Drawn tow is then fed into compression boxes,Cloth Inserted EPDM Rubber Sheet, at a rate of 9-15 crimps per inch (3-6 per cm).High Quality Aging Resistant EPDM Rubber Sheet.

Setting

• 3 After the tow is crimped, it is heated at 212-302°F (100-150°C)FKM Rubber Sheet.High Temperature Resistant Viton Rubber Sheet.

Cutting

• 4 Following heat setting,Ozone Resistant Viton Rubber Sheet. 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)Abrasion Resistance Sheet Rubber.Abrasion Resistance Rubber Sheet, such ascarpet,polyester filaments are cut into 6 inch (15 cm)Mining Rubber Sheets.

The Future

Mining Rubber Products,Nitrile Rubber Sheet Supplier's fastest-growing fiber.NBR Rubber Sheet. 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,Black Oil Resistant NBR Rubber Sheet, was introduced to the public in 1991. More luxurious and versatile than traditional polyester,SBR Rubber Sheet. Clothing designers such as Mary McFadden have created a line of clothes using this new form of polyester.Industrial Black SBR Rubber Sheet, a superfiber material used to make bulletproof vests. This type of polyester may eventually be used as composite materials for cars and airplanes.