Polyester

Background

Aluminum Round Tubes, air, water, and petroleum. Developed in a 20th-century laboratory,Aluminum Condenser Tubes. In this reaction,Aluminum Radiator Tubes.Aluminum Tubes.

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

History

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

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,Heat Treatment Furnace Brazing. In this process, ethylene is the polymer, the chemical building block of polyester,Roller Fin Machines.

The Manufacturing
Process

Polyester is manufactured by one of several methods.Fin Stamping Machine. The four basic forms are filament,High Speed Fin Machine, tow, and fiberfill. In the filament form,Fin Punching Press, producing smooth-Tube and Fin Aluminum Intercooler.Aluminum Intercooler Core, filaments are cut to short,Aluminum Bar and Plate Intercooler.Turbo 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.Radiators with Plastic Tank.

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-Automotive Radiator,All Aluminum Radiator, is extruded through a slot to form long ribbons.

Drying

• 3 After the polyester emerges from polymerization,Cooling System. 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.Cladded Aluminum Radiator Tube, which are usually round,Aluminum Welded Tube. The number of holes in the spinneret determines the size of the yarn,Radiator aluminum flat 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,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 intercooler rectangular tube.
• Intercooler rectangular tube,Composite Aluminium Tube. Also,Harmonica Intercooler Tube,Aluminium Multi channel 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.

Extruded Radiator Tubes

Extruded Aluminium 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 High Frequency Welded Tube. The rope-Micro Channel Condenser Tube.

Drawing tow

• 1 Newly-Aluminium Micro channel Tube.Round Condenser Tube.

Crimping

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

Setting

• 3 After the tow is crimped, it is heated at 212-302°F (100-150°C)High Frequency Oil Cooler Tube.aluminum fin.

Cutting

• 4 Following heat setting,Heat Exchanger Tubes. 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)Aluminum Round Tubes.Aluminum Tubes, such ascarpet,polyester filaments are cut into 6 inch (15 cm)Aluminum Foil roll.

The Future

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