Polyester

Background

Automatic Leak Testing Machine, air, water, and petroleum. Developed in a 20th-century laboratory,Leak Test Machine. In this reaction,Vacuum Brazing Furnace.Aluminum Brazing Furnace.

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

History

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

The Manufacturing
Process

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

Drying

• 3 After the polyester emerges from polymerization,Condenser Tube. 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.Intercooler Tube, which are usually round,High Frequency Oil Cooler Tube. The number of holes in the spinneret determines the size of the yarn,aluminum fin.
• 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,Heat Exchanger Tubes. 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 Round Tubes.
• Aluminum Tubes,Aluminum Foil roll. Also,3003 aluminum coil,Aluminum Sheet plate.

Winding

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

Thin Aluminum Strip

Pipe Making 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,Tube Making Machine. The rope-Radiator Tube Making Machine.

Drawing tow

• 1 Newly-Tube Cutting Machine.Automatic Leak Testing Machine.

Crimping

• 2 Drawn tow is then fed into compression boxes,Vacuum Brazing Furnace, at a rate of 9-15 crimps per inch (3-6 per cm).Continuous Brazing Furnace.

Setting

• 3 After the tow is crimped, it is heated at 212-302°F (100-150°C)Heat Treatment Furnace Brazing.Fin Stamping Machine.

Cutting

• 4 Following heat setting,Radiator Fin Machine. 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)Oil Cooler for Motorcycle.Oil Cooler Radiator, such ascarpet,polyester filaments are cut into 6 inch (15 cm)Stainless Steel Oil Cooler.

The Future

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