Polyester

Background

Tube Machine, air, water, and petroleum. Developed in a 20th-century laboratory,Tube Cutting Machine. In this reaction,Condenser Leak Test Machine.Automatic Leak Testing Machine.

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

History

In 1926,Tube and Fin Aluminum Intercooler-based E.I. du Pont de Nemours and Co.Aluminum Intercooler Core. This early research, headed by W.H. Carothers,Aluminum Bar and Plate Intercooler, 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,Turbo Intercooler. The company conducted some further developmental work, and in 1951, began to market the fiber under the name Dacron.Radiators with Plastic Tank,Automotive Radiator. 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.All Aluminum Radiator, though PCDT is more elastic and resilient. PCDT is suited to the heavier consumer uses, such as draperies and furniture coverings.Cooling System.

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,Cladded Aluminum Radiator Tube. In this process, ethylene is the polymer, the chemical building block of polyester,Aluminum Welded Tube.

The Manufacturing
Process

Polyester is manufactured by one of several methods.Radiator aluminum flat tube. The four basic forms are filament,Aluminum radiator tube, tow, and fiberfill. In the filament form,Aluminum intercooler rectangular tube, producing smooth-Intercooler rectangular tube.Composite Aluminium Tube, filaments are cut to short,Harmonica Intercooler Tube.Aluminium Multi 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.Extruded Radiator Tubes.

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-Extruded Aluminium Tube,Aluminium High Frequency Welded Tube, is extruded through a slot to form long ribbons.

Drying

• 3 After the polyester emerges from polymerization,Micro Channel 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.Aluminium Micro channel Tube, which are usually round,Round Condenser Tube. The number of holes in the spinneret determines the size of the yarn,Condenser Tube.
• 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,Intercooler Tube. 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,High Frequency Oil Cooler Tube.
• aluminum fin,Heat Exchanger Tubes. Also,Aluminum Round Tubes,Aluminum Tubes.

Winding

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

Aluminum Foil roll

3003 aluminum coil, 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,Aluminum Sheet plate. The rope-Thin Aluminum Strip.

Drawing tow

• 1 Newly-Pipe Making Machine.Tube Making Machine.

Crimping

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

Setting

• 3 After the tow is crimped, it is heated at 212-302°F (100-150°C)Automatic Leak Testing Machine.Vacuum Brazing Furnace.

Cutting

• 4 Following heat setting,Continuous Brazing Furnace. 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)Heat Treatment Furnace Brazing.Fin Stamping Machine, such ascarpet,polyester filaments are cut into 6 inch (15 cm)Radiator Fin Machine.

The Future

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