Polyester

Background

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

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

History

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

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,Roller Fin Machines. In this process, ethylene is the polymer, the chemical building block of polyester,Fin Stamping Machine.

The Manufacturing
Process

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

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

Drying

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

Extruded Aluminium Tube

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

Drawing tow

• 1 Newly-Round Condenser Tube.Condenser Tube.

Crimping

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

Setting

• 3 After the tow is crimped, it is heated at 212-302°F (100-150°C)aluminum fin.Heat Exchanger Tubes.

Cutting

• 4 Following heat setting,Aluminum Round 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 Tubes.Aluminum Foil roll, such ascarpet,polyester filaments are cut into 6 inch (15 cm)3003 aluminum coil.

The Future

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