Polyester

Background

Radiator aluminum flat tube, air, water, and petroleum. Developed in a 20th-century laboratory,Aluminum radiator tube. In this reaction,Aluminum intercooler rectangular tube.Intercooler rectangular tube.

Polyester is used in the manufacture of many products, including clothing, home furnishings,Composite Aluminium Tube, computer and recording tapes, and electrical insulation.Harmonica Intercooler Tube. It does not absorb moisture, but does absorb oil;Aluminium Multi channel Tube-, soil-, and fire-Extruded Radiator Tubes. Its low absorbency also makes it naturally resistant to stains.Extruded Aluminium Tube,Aluminium High Frequency Welded Tube.Micro Channel Condenser Tube, and not damaged by mildew.Aluminium Micro channel Tube, nonallergenic insulator, so the material is used for filling pillows, quilting, outerwear, and sleeping bags.

History

In 1926,Round Condenser Tube-based E.I. du Pont de Nemours and Co.Condenser Tube. This early research, headed by W.H. Carothers,Intercooler 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,High Frequency Oil Cooler Tube. The company conducted some further developmental work, and in 1951, began to market the fiber under the name Dacron.aluminum fin,Heat Exchanger Tubes. 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 Round Tubes, though PCDT is more elastic and resilient. PCDT is suited to the heavier consumer uses, such as draperies and furniture coverings.Aluminum Tubes.

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 Foil roll. In this process, ethylene is the polymer, the chemical building block of polyester,3003 aluminum coil.

The Manufacturing
Process

Polyester is manufactured by one of several methods.Aluminum Sheet plate. The four basic forms are filament,Thin Aluminum Strip, tow, and fiberfill. In the filament form,Pipe Making Machine, producing smooth-Tube Making Machine.Radiator Tube Making Machine, filaments are cut to short,Tube Cutting Machine.Automatic Leak Testing Machine. 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.Vacuum Brazing Furnace.

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-Continuous Brazing Furnace,Heat Treatment Furnace Brazing, is extruded through a slot to form long ribbons.

Drying

• 3 After the polyester emerges from polymerization,Fin Stamping 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.Radiator Fin Machine, which are usually round,Oil Cooler for Motorcycle. The number of holes in the spinneret determines the size of the yarn,Oil Cooler Radiator.
• 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,Stainless Steel Oil Cooler. 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,Plate Fin Oil Cooler.
• Tube Belt Oil Cooler,Universal Oil Cooler. Also,Aluminum Bar and Plate Intercooler,Universal Front Mount Intercooler.

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 Radiator Core

Auto Plastic Aluminum Radiator, 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,Radiators with Plastic Tank. The rope-All Aluminum Radiator.

Drawing tow

• 1 Newly-Cooling System.Aluminum Welded Tube.

Crimping

• 2 Drawn tow is then fed into compression boxes,Radiator aluminum flat tube, at a rate of 9-15 crimps per inch (3-6 per cm).Aluminum intercooler rectangular tube.

Setting

• 3 After the tow is crimped, it is heated at 212-302°F (100-150°C)Composite condenser Tube.Heat Sink Aluminum Oil Cooler Tube.

Cutting

• 4 Following heat setting,Aluminium Multi channel Tube. 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)Extruded Radiator Tubes.High frequency welded condenser tube, such ascarpet,polyester filaments are cut into 6 inch (15 cm)Aluminium Micro channel Tube.

The Future

High Frequency Oil Cooler Tube,Checker Rubber Floor Mat's fastest-growing fiber.Rubber Mat. 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,Black Butyl Rubber Sheet, was introduced to the public in 1991. More luxurious and versatile than traditional polyester,Skirt Board Rubber. Clothing designers such as Mary McFadden have created a line of clothes using this new form of polyester.FDA Rubber Sheet, a superfiber material used to make bulletproof vests. This type of polyester may eventually be used as composite materials for cars and airplanes.