Polyester

Background

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

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

History

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

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,Radiator aluminum flat tube. In this process, ethylene is the polymer, the chemical building block of polyester,Aluminum radiator tube.

The Manufacturing
Process

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

Drying

• 3 After the polyester emerges from polymerization,Round 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.Condenser Tube, which are usually round,Intercooler Tube. The number of holes in the spinneret determines the size of the yarn,High Frequency Oil Cooler 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 fin. 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,Heat Exchanger Tubes.
• Aluminum Round Tubes,Aluminum Tubes. Also,Aluminum Foil roll,3003 aluminum coil.

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 Sheet plate

Thin Aluminum Strip, 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,Pipe Making Machine. The rope-Tube Making Machine.

Drawing tow

• 1 Newly-Radiator Tube Making Machine.Tube Cutting Machine.

Crimping

• 2 Drawn tow is then fed into compression boxes,Automatic Leak Testing Machine, at a rate of 9-15 crimps per inch (3-6 per cm).Vacuum Brazing Furnace.

Setting

• 3 After the tow is crimped, it is heated at 212-302°F (100-150°C)Continuous Brazing Furnace.Heat Treatment Furnace Brazing.

Cutting

• 4 Following heat setting,Fin Stamping 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)Radiator Fin Machine.Oil Cooler for Motorcycle, such ascarpet,polyester filaments are cut into 6 inch (15 cm)Oil Cooler Radiator.

The Future

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