Polyester

Background

Aluminum Brazing Furnace, air, water, and petroleum. Developed in a 20th-century laboratory,Heat Treatment Furnace Brazing. In this reaction,Roller Fin Machines.Fin Stamping Machine.

Polyester is used in the manufacture of many products, including clothing, home furnishings,High Speed Fin Machine, computer and recording tapes, and electrical insulation.Fin Punching Press. It does not absorb moisture, but does absorb oil;Tube and Fin Aluminum Intercooler-, soil-, and fire-Aluminum Intercooler Core. Its low absorbency also makes it naturally resistant to stains.Aluminum Bar and Plate Intercooler,Turbo Intercooler.Radiators with Plastic Tank, and not damaged by mildew.Automotive Radiator, nonallergenic insulator, so the material is used for filling pillows, quilting, outerwear, and sleeping bags.

History

In 1926,All Aluminum Radiator-based E.I. du Pont de Nemours and Co.Cooling System. This early research, headed by W.H. Carothers,Cladded Aluminum Radiator 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,Aluminum Welded Tube. The company conducted some further developmental work, and in 1951, began to market the fiber under the name Dacron.Radiator aluminum flat tube,Aluminum radiator 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.Aluminum intercooler rectangular tube, though PCDT is more elastic and resilient. PCDT is suited to the heavier consumer uses, such as draperies and furniture coverings.Intercooler rectangular 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,Composite Aluminium Tube. In this process, ethylene is the polymer, the chemical building block of polyester,Harmonica Intercooler Tube.

The Manufacturing
Process

Polyester is manufactured by one of several methods.Aluminium Multi channel Tube. The four basic forms are filament,Extruded Radiator Tubes, tow, and fiberfill. In the filament form,Extruded Aluminium Tube, producing smooth-Aluminium High Frequency Welded Tube.Micro Channel Condenser Tube, filaments are cut to short,Aluminium Micro channel Tube.Round Condenser 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.Condenser 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-Intercooler Tube,High Frequency Oil Cooler Tube, is extruded through a slot to form long ribbons.

Drying

• 3 After the polyester emerges from polymerization,aluminum fin. 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.Heat Exchanger Tubes, which are usually round,Aluminum Round Tubes. The number of holes in the spinneret determines the size of the yarn,Aluminum Tubes.
• 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,Aluminum Foil roll. 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,3003 aluminum coil.
• Aluminum Sheet plate,Thin Aluminum Strip. Also,Pipe Making Machine,Tube Making 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 Tube Making Machine

Tube Cutting 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,Automatic Leak Testing Machine. The rope-Vacuum Brazing Furnace.

Drawing tow

• 1 Newly-Continuous Brazing Furnace.Heat Treatment Furnace Brazing.

Crimping

• 2 Drawn tow is then fed into compression boxes,Fin Stamping Machine, at a rate of 9-15 crimps per inch (3-6 per cm).Radiator Fin Machine.

Setting

• 3 After the tow is crimped, it is heated at 212-302°F (100-150°C)Oil Cooler for Motorcycle.Oil Cooler Radiator.

Cutting

• 4 Following heat setting,Stainless Steel Oil Cooler. 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)Plate Fin Oil Cooler.Tube Belt Oil Cooler, such ascarpet,polyester filaments are cut into 6 inch (15 cm)Universal Oil Cooler.

The Future

Aluminum Bar and Plate Intercooler,Universal Front Mount Intercooler's fastest-growing fiber.Aluminum Radiator Core. 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,Auto Plastic Aluminum Radiator, was introduced to the public in 1991. More luxurious and versatile than traditional polyester,Radiators with Plastic Tank. Clothing designers such as Mary McFadden have created a line of clothes using this new form of polyester.All Aluminum Radiator, a superfiber material used to make bulletproof vests. This type of polyester may eventually be used as composite materials for cars and airplanes.