Polyester

Background

Intercooler Tube, air, water, and petroleum. Developed in a 20th-century laboratory,High Frequency Oil Cooler Tube. In this reaction,aluminum fin.Heat Exchanger Tubes.

Polyester is used in the manufacture of many products, including clothing, home furnishings,Aluminum Round Tubes, computer and recording tapes, and electrical insulation.Aluminum Tubes. It does not absorb moisture, but does absorb oil;Aluminum Foil roll-, soil-, and fire-3003 aluminum coil. Its low absorbency also makes it naturally resistant to stains.Aluminum Sheet plate,Thin Aluminum Strip.Pipe Making Machine, and not damaged by mildew.Tube Making Machine, nonallergenic insulator, so the material is used for filling pillows, quilting, outerwear, and sleeping bags.

History

In 1926,Radiator Tube Making Machine-based E.I. du Pont de Nemours and Co.Tube Cutting Machine. This early research, headed by W.H. Carothers,Automatic Leak Testing 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,Vacuum Brazing Furnace. The company conducted some further developmental work, and in 1951, began to market the fiber under the name Dacron.Continuous Brazing Furnace,Heat Treatment Furnace Brazing. 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.Fin Stamping Machine, though PCDT is more elastic and resilient. PCDT is suited to the heavier consumer uses, such as draperies and furniture coverings.Radiator Fin 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,Oil Cooler for Motorcycle. In this process, ethylene is the polymer, the chemical building block of polyester,Oil Cooler Radiator.

The Manufacturing
Process

Polyester is manufactured by one of several methods.Stainless Steel Oil Cooler. The four basic forms are filament,Plate Fin Oil Cooler, tow, and fiberfill. In the filament form,Tube Belt Oil Cooler, producing smooth-Universal Oil Cooler.Aluminum Bar and Plate Intercooler, filaments are cut to short,Universal Front Mount Intercooler.Aluminum Radiator Core. 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.Auto Plastic Aluminum Radiator.

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-Radiators with Plastic Tank,All Aluminum Radiator, is extruded through a slot to form long ribbons.

Drying

• 3 After the polyester emerges from polymerization,Cooling System. 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.Aluminum Welded Tube, which are usually round,Radiator aluminum flat tube. The number of holes in the spinneret determines the size of the yarn,Aluminum intercooler rectangular 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,Composite condenser 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,Heat Sink Aluminum Oil Cooler Tube.
• Aluminium Multi channel Tube,Extruded Radiator Tubes. Also,High frequency welded condenser tube,Aluminium Micro channel Tube.

Winding

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

High Frequency Oil Cooler Tube

Checker Rubber Floor Mat, 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,Rubber Mat. The rope-Black Butyl Rubber Sheet.

Drawing tow

• 1 Newly-Skirt Board Rubber.FDA Rubber Sheet.

Crimping

• 2 Drawn tow is then fed into compression boxes,Food Grade Rubber Sheet, at a rate of 9-15 crimps per inch (3-6 per cm).Red Silicone Rubber Sheet.

Setting

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

Cutting

• 4 Following heat setting,High Temperature Resistant EPDM 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)Cloth Inserted EPDM Rubber Sheet.High Quality Aging Resistant EPDM Rubber Sheet, such ascarpet,polyester filaments are cut into 6 inch (15 cm)FKM Rubber Sheet.

The Future

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