Polyester

Background

Aluminum Intercooler Core, air, water, and petroleum. Developed in a 20th-century laboratory,Aluminum Bar and Plate Intercooler. In this reaction,Turbo Intercooler.Radiators with Plastic Tank.

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

History

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

The Manufacturing
Process

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

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-3003 aluminum coil,Aluminum Sheet plate, is extruded through a slot to form long ribbons.

Drying

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

Winding

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

Radiator Fin Machine

Oil Cooler for Motorcycle, 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 Radiator. The rope-Stainless Steel Oil Cooler.

Drawing tow

• 1 Newly-Plate Fin Oil Cooler.Tube Belt Oil Cooler.

Crimping

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

Setting

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

Cutting

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

The Future

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