Polyester

Background

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

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

History

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

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,High Speed Fin Machine. In this process, ethylene is the polymer, the chemical building block of polyester,Fin Punching Press.

The Manufacturing
Process

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

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-Cladded Aluminum Radiator Tube,Aluminum Welded Tube, is extruded through a slot to form long ribbons.

Drying

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

Micro Channel Condenser Tube

Aluminium Micro channel 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,Round Condenser Tube. The rope-Condenser Tube.

Drawing tow

• 1 Newly-Intercooler Tube.High Frequency Oil Cooler Tube.

Crimping

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

Setting

• 3 After the tow is crimped, it is heated at 212-302°F (100-150°C)Aluminum Round Tubes.Aluminum Tubes.

Cutting

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

The Future

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