Polyester

Background

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

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

History

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

The Manufacturing
Process

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

Drying

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

Radiator 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,Tube Cutting Machine. The rope-Automatic Leak Testing Machine.

Drawing tow

• 1 Newly-Vacuum Brazing Furnace.Continuous Brazing Furnace.

Crimping

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

Setting

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

Cutting

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

The Future

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