Polyester

Background

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

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

History

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

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,Automotive Radiator. In this process, ethylene is the polymer, the chemical building block of polyester,All Aluminum Radiator.

The Manufacturing
Process

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

Drying

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

Winding

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

Heat Exchanger Tubes

Aluminum Round Tubes, 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 Tubes. The rope-Aluminum Foil roll.

Drawing tow

• 1 Newly-3003 aluminum coil.Aluminum Sheet plate.

Crimping

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

Setting

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

Cutting

• 4 Following heat setting,Tube Cutting Machine. 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)Automatic Leak Testing Machine.Vacuum Brazing Furnace, such ascarpet,polyester filaments are cut into 6 inch (15 cm)Continuous Brazing Furnace.

The Future

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