Polyester

Background

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

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

History

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

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

The Manufacturing
Process

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

Drying

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

Aluminum Foil roll, 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,3003 aluminum coil. The rope-Aluminum Sheet plate.

Drawing tow

• 1 Newly-Thin Aluminum Strip.Pipe Making Machine.

Crimping

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

Setting

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

Cutting

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

The Future

Radiator Fin Machine,Oil Cooler for Motorcycle's fastest-growing fiber.Oil Cooler Radiator. 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,Stainless Steel Oil Cooler, was introduced to the public in 1991. More luxurious and versatile than traditional polyester,Plate Fin Oil Cooler. Clothing designers such as Mary McFadden have created a line of clothes using this new form of polyester.Tube Belt 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.