Polyester

Background

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

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

History

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

The Manufacturing
Process

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

Drying

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

Aluminum 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 Foil roll. The rope-3003 aluminum coil.

Drawing tow

• 1 Newly-Aluminum Sheet plate.Thin Aluminum Strip.

Crimping

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

Setting

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

Cutting

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

The Future

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