Polyester

Background

Aluminum fin, air, water, and petroleum. Developed in a 20th-century laboratory,Aluminum Raw Material. In this reaction,Automatic Core Assembly Machine.Core Assembly Machine.

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

History

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

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,Aluminum Intercooler Core. In this process, ethylene is the polymer, the chemical building block of polyester,Aluminum Bar and Plate Intercooler.

The Manufacturing
Process

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

Drying

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

Winding

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

Condenser Tube

Intercooler 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,High Frequency Oil Cooler Tube. The rope-aluminum fin.

Drawing tow

• 1 Newly-Heat Exchanger Tubes.Aluminum Round Tubes.

Crimping

• 2 Drawn tow is then fed into compression boxes,Aluminum Tubes, at a rate of 9-15 crimps per inch (3-6 per cm).Aluminum Foil roll.

Setting

• 3 After the tow is crimped, it is heated at 212-302°F (100-150°C)3003 aluminum coil.Aluminum Sheet plate.

Cutting

• 4 Following heat setting,Thin Aluminum Strip. 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)Pipe Making Machine.Tube Making Machine, such ascarpet,polyester filaments are cut into 6 inch (15 cm)Radiator Tube Making Machine.

The Future

Tube Cutting Machine,Automatic Leak Testing Machine's fastest-growing fiber.Vacuum Brazing Furnace. 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,Continuous Brazing Furnace, was introduced to the public in 1991. More luxurious and versatile than traditional polyester,Heat Treatment Furnace Brazing. Clothing designers such as Mary McFadden have created a line of clothes using this new form of polyester.Fin Stamping Machine, a superfiber material used to make bulletproof vests. This type of polyester may eventually be used as composite materials for cars and airplanes.