Polyester

Background

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

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

History

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

The Manufacturing
Process

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

Drying

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

Winding

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

Pipe Making Machine

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

Drawing tow

• 1 Newly-Automatic Leak Testing Machine.Vacuum Brazing Furnace.

Crimping

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

Setting

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

Cutting

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

The Future

Tube Belt Oil Cooler,Universal Oil Cooler's fastest-growing fiber.Aluminum Bar and Plate Intercooler. 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,Universal Front Mount Intercooler, was introduced to the public in 1991. More luxurious and versatile than traditional polyester,Aluminum Radiator Core. Clothing designers such as Mary McFadden have created a line of clothes using this new form of polyester.Auto Plastic 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.