Polyester

Background

Radiators with Plastic Tank, air, water, and petroleum. Developed in a 20th-century laboratory,Automotive Radiator. In this reaction,All Aluminum Radiator.Cooling System.

Polyester is used in the manufacture of many products, including clothing, home furnishings,Cladded Aluminum Radiator Tube, computer and recording tapes, and electrical insulation.Aluminum Welded Tube. It does not absorb moisture, but does absorb oil;Radiator aluminum flat tube-, soil-, and fire-Aluminum radiator tube. Its low absorbency also makes it naturally resistant to stains.Aluminum intercooler rectangular tube,Intercooler rectangular tube.Composite Aluminium Tube, and not damaged by mildew.Harmonica Intercooler Tube, nonallergenic insulator, so the material is used for filling pillows, quilting, outerwear, and sleeping bags.

History

In 1926,Aluminium Multi channel Tube-based E.I. du Pont de Nemours and Co.Extruded Radiator Tubes. This early research, headed by W.H. Carothers,Extruded Aluminium Tube, 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,Aluminium High Frequency Welded Tube. The company conducted some further developmental work, and in 1951, began to market the fiber under the name Dacron.Micro Channel Condenser Tube,Aluminium Micro channel Tube. 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.Round Condenser Tube, though PCDT is more elastic and resilient. PCDT is suited to the heavier consumer uses, such as draperies and furniture coverings.Condenser 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,Intercooler Tube. In this process, ethylene is the polymer, the chemical building block of polyester,High Frequency Oil Cooler Tube.

The Manufacturing
Process

Polyester is manufactured by one of several methods.aluminum fin. The four basic forms are filament,Heat Exchanger Tubes, tow, and fiberfill. In the filament form,Aluminum Round Tubes, producing smooth-Aluminum Tubes.Aluminum Foil roll, filaments are cut to short,3003 aluminum coil.Aluminum Sheet plate. 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.Thin Aluminum Strip.

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-Pipe Making Machine,Tube Making Machine, is extruded through a slot to form long ribbons.

Drying

• 3 After the polyester emerges from polymerization,Radiator Tube Making Machine. 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.Tube Cutting Machine, which are usually round,Automatic Leak Testing Machine. The number of holes in the spinneret determines the size of the yarn,Vacuum Brazing Furnace.
• 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,Continuous Brazing Furnace. 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 Treatment Furnace Brazing.
• Fin Stamping Machine,Radiator Fin Machine. Also,Oil Cooler for Motorcycle,Oil Cooler Radiator.

Winding

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

Stainless Steel Oil Cooler

Plate Fin Oil Cooler, 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,Tube Belt Oil Cooler. The rope-Universal Oil Cooler.

Drawing tow

• 1 Newly-Aluminum Bar and Plate Intercooler.Universal Front Mount Intercooler.

Crimping

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

Setting

• 3 After the tow is crimped, it is heated at 212-302°F (100-150°C)Radiators with Plastic Tank.All Aluminum Radiator.

Cutting

• 4 Following heat setting,Cooling System. 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 Welded Tube.Radiator aluminum flat tube, such ascarpet,polyester filaments are cut into 6 inch (15 cm)Aluminum intercooler rectangular tube.

The Future

Composite condenser Tube,Heat Sink Aluminum Oil Cooler Tube's fastest-growing fiber.Aluminium Multi channel Tube. 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,Extruded Radiator Tubes, was introduced to the public in 1991. More luxurious and versatile than traditional polyester,High frequency welded condenser tube. Clothing designers such as Mary McFadden have created a line of clothes using this new form of polyester.Aluminium Micro channel Tube, a superfiber material used to make bulletproof vests. This type of polyester may eventually be used as composite materials for cars and airplanes.