Polyester

Background

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

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

History

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

The Manufacturing
Process

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

Drying

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

Tube Cutting Machine

Automatic Leak Testing 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,Vacuum Brazing Furnace. The rope-Continuous Brazing Furnace.

Drawing tow

• 1 Newly-Heat Treatment Furnace Brazing.Fin Stamping Machine.

Crimping

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

Setting

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

Cutting

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

The Future

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