Polyester

Background

Intercooler tubes, air, water, and petroleum. Developed in a 20th-century laboratory,aluminum fin. In this reaction,Heat Exchanger Tubes.Aluminum Round Tubes.

Polyester is used in the manufacture of many products, including clothing, home furnishings,Aluminum Condenser Tubes, computer and recording tapes, and electrical insulation.Aluminum Radiator Tubes. It does not absorb moisture, but does absorb oil;Aluminum Tubes-, soil-, and fire-Aluminum Sheet plate. Its low absorbency also makes it naturally resistant to stains.Thin Aluminum Strip,Aluminum fin.Aluminum Raw Material, and not damaged by mildew.Automatic Core Assembly Machine, nonallergenic insulator, so the material is used for filling pillows, quilting, outerwear, and sleeping bags.

History

In 1926,Core Assembly Machine-based E.I. du Pont de Nemours and Co.Pipe Making Machine. This early research, headed by W.H. Carothers,Tube Making Machine, 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 Tube Making Machine. The company conducted some further developmental work, and in 1951, began to market the fiber under the name Dacron.Tube Machine,Tube Cutting Machine. 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.Condenser Leak Test Machine, though PCDT is more elastic and resilient. PCDT is suited to the heavier consumer uses, such as draperies and furniture coverings.Automatic Leak Testing Machine.

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,Leak Test Machine. In this process, ethylene is the polymer, the chemical building block of polyester,Vacuum Brazing Furnace.

The Manufacturing
Process

Polyester is manufactured by one of several methods.Aluminum Brazing Furnace. The four basic forms are filament,Heat Treatment Furnace Brazing, tow, and fiberfill. In the filament form,Roller Fin Machines, producing smooth-Fin Stamping Machine.High Speed Fin Machine, filaments are cut to short,Fin Punching Press.Tube and Fin Aluminum Intercooler. 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.Aluminum Intercooler Core.

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-Aluminum Bar and Plate Intercooler,Turbo Intercooler, is extruded through a slot to form long ribbons.

Drying

• 3 After the polyester emerges from polymerization,Radiators with Plastic Tank. 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.Automotive Radiator, which are usually round,All Aluminum Radiator. The number of holes in the spinneret determines the size of the yarn,Cooling System.
• 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,Cladded Aluminum Radiator 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,Aluminum Welded Tube.
• Radiator aluminum flat tube,Aluminum radiator tube. Also,Aluminum intercooler rectangular tube,Intercooler rectangular tube.

Winding

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

Composite Aluminium Tube

Harmonica Intercooler Tube, 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,Aluminium Multi channel Tube. The rope-Extruded Radiator Tubes.

Drawing tow

• 1 Newly-Extruded Aluminium Tube.Aluminium High Frequency Welded Tube.

Crimping

• 2 Drawn tow is then fed into compression boxes,Micro Channel Condenser Tube, at a rate of 9-15 crimps per inch (3-6 per cm).Aluminium Micro channel Tube.

Setting

• 3 After the tow is crimped, it is heated at 212-302°F (100-150°C)Round Condenser Tube.Condenser Tube.

Cutting

• 4 Following heat setting,Intercooler Tube. 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)High Frequency Oil Cooler Tube.aluminum fin, such ascarpet,polyester filaments are cut into 6 inch (15 cm)Heat Exchanger Tubes.

The Future

Aluminum Round Tubes,Aluminum Tubes's fastest-growing fiber.Aluminum Foil roll. 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,3003 aluminum coil, was introduced to the public in 1991. More luxurious and versatile than traditional polyester,Aluminum Sheet plate. Clothing designers such as Mary McFadden have created a line of clothes using this new form of polyester.Thin Aluminum Strip, a superfiber material used to make bulletproof vests. This type of polyester may eventually be used as composite materials for cars and airplanes.