Polyester

Background

Aluminum intercooler rectangular tube, air, water, and petroleum. Developed in a 20th-century laboratory,Intercooler rectangular tube. In this reaction,Composite Aluminium Tube.Harmonica Intercooler Tube.

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

History

In 1926,Intercooler Tube-based E.I. du Pont de Nemours and Co.High Frequency Oil Cooler Tube. This early research, headed by W.H. Carothers,aluminum fin, 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,Heat Exchanger Tubes. The company conducted some further developmental work, and in 1951, began to market the fiber under the name Dacron.Aluminum Round Tubes,Aluminum 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 Foil roll, though PCDT is more elastic and resilient. PCDT is suited to the heavier consumer uses, such as draperies and furniture coverings.3003 aluminum coil.

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 Sheet plate. In this process, ethylene is the polymer, the chemical building block of polyester,Thin Aluminum Strip.

The Manufacturing
Process

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

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-Fin Stamping Machine,Radiator Fin Machine, is extruded through a slot to form long ribbons.

Drying

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

Radiators with Plastic Tank

All 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,Cooling System. The rope-Aluminum Welded Tube.

Drawing tow

• 1 Newly-Radiator aluminum flat tube.Aluminum intercooler rectangular tube.

Crimping

• 2 Drawn tow is then fed into compression boxes,Composite condenser Tube, at a rate of 9-15 crimps per inch (3-6 per cm).Heat Sink Aluminum Oil Cooler Tube.

Setting

• 3 After the tow is crimped, it is heated at 212-302°F (100-150°C)Aluminium Multi channel Tube.Extruded Radiator Tubes.

Cutting

• 4 Following heat setting,High frequency welded condenser 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)Aluminium Micro channel Tube.High Frequency Oil Cooler Tube, such ascarpet,polyester filaments are cut into 6 inch (15 cm)Checker Rubber Floor Mat.

The Future

Rubber Mat,Black Butyl Rubber Sheet's fastest-growing fiber.Skirt Board Rubber. 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,FDA Rubber Sheet, was introduced to the public in 1991. More luxurious and versatile than traditional polyester,Food Grade Rubber Sheet. Clothing designers such as Mary McFadden have created a line of clothes using this new form of polyester.Red Silicone 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.