Polyester

Background

Tube and Fin Aluminum Intercooler, air, water, and petroleum. Developed in a 20th-century laboratory,Aluminum Intercooler Core. In this reaction,Aluminum Bar and Plate Intercooler.Turbo Intercooler.

Polyester is used in the manufacture of many products, including clothing, home furnishings,Radiators with Plastic Tank, computer and recording tapes, and electrical insulation.Automotive Radiator. It does not absorb moisture, but does absorb oil;All Aluminum Radiator-, soil-, and fire-Cooling System. Its low absorbency also makes it naturally resistant to stains.Cladded Aluminum Radiator Tube,Aluminum Welded Tube.Radiator aluminum flat tube, and not damaged by mildew.Aluminum radiator tube, nonallergenic insulator, so the material is used for filling pillows, quilting, outerwear, and sleeping bags.

History

In 1926,Aluminum intercooler rectangular tube-based E.I. du Pont de Nemours and Co.Intercooler rectangular tube. This early research, headed by W.H. Carothers,Composite Aluminium Tube, 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,Harmonica Intercooler Tube. The company conducted some further developmental work, and in 1951, began to market the fiber under the name Dacron.Aluminium Multi channel Tube,Extruded Radiator Tubes. 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.Extruded Aluminium Tube, though PCDT is more elastic and resilient. PCDT is suited to the heavier consumer uses, such as draperies and furniture coverings.Aluminium High Frequency Welded Tube.

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,Micro Channel Condenser Tube. In this process, ethylene is the polymer, the chemical building block of polyester,Aluminium Micro channel Tube.

The Manufacturing
Process

Polyester is manufactured by one of several methods.Round Condenser Tube. The four basic forms are filament,Condenser Tube, tow, and fiberfill. In the filament form,Intercooler Tube, producing smooth-High Frequency Oil Cooler Tube.aluminum fin, filaments are cut to short,Heat Exchanger Tubes.Aluminum Round Tubes. 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.Aluminum Tubes.

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 Foil roll,3003 aluminum coil, is extruded through a slot to form long ribbons.

Drying

• 3 After the polyester emerges from polymerization,Aluminum Sheet plate. 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.Thin Aluminum Strip, which are usually round,Pipe Making Machine. The number of holes in the spinneret determines the size of the yarn,Tube Making Machine.
• 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,Radiator Tube Making Machine. 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,Tube Cutting Machine.
• Automatic Leak Testing Machine,Vacuum Brazing Furnace. Also,Continuous Brazing Furnace,Heat Treatment Furnace Brazing.

Winding

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

Fin Stamping Machine

Radiator Fin Machine, 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,Oil Cooler for Motorcycle. The rope-Oil Cooler Radiator.

Drawing tow

• 1 Newly-Stainless Steel Oil Cooler.Plate Fin Oil Cooler.

Crimping

• 2 Drawn tow is then fed into compression boxes,Tube Belt Oil Cooler, at a rate of 9-15 crimps per inch (3-6 per cm).Universal Oil Cooler.

Setting

• 3 After the tow is crimped, it is heated at 212-302°F (100-150°C)Aluminum Bar and Plate Intercooler.Universal Front Mount Intercooler.

Cutting

• 4 Following heat setting,Aluminum Radiator Core. 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)Auto Plastic Aluminum Radiator.Radiators with Plastic Tank, such ascarpet,polyester filaments are cut into 6 inch (15 cm)All Aluminum Radiator.

The Future

Cooling System,Aluminum Welded Tube's fastest-growing fiber.Radiator aluminum flat tube. 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,Aluminum intercooler rectangular tube, was introduced to the public in 1991. More luxurious and versatile than traditional polyester,Composite condenser Tube. Clothing designers such as Mary McFadden have created a line of clothes using this new form of polyester.Heat Sink Aluminum Oil Cooler Tube, a superfiber material used to make bulletproof vests. This type of polyester may eventually be used as composite materials for cars and airplanes.