Polyester

Background

Micro Channel Condenser Tube, air, water, and petroleum. Developed in a 20th-century laboratory,Aluminium Micro channel Tube. In this reaction,Round Condenser Tube.Condenser Tube.

Polyester is used in the manufacture of many products, including clothing, home furnishings,Intercooler Tube, computer and recording tapes, and electrical insulation.High Frequency Oil Cooler Tube. It does not absorb moisture, but does absorb oil;aluminum fin-, soil-, and fire-Heat Exchanger Tubes. Its low absorbency also makes it naturally resistant to stains.Aluminum Round Tubes,Aluminum Tubes.Aluminum Foil roll, and not damaged by mildew.3003 aluminum coil, nonallergenic insulator, so the material is used for filling pillows, quilting, outerwear, and sleeping bags.

History

In 1926,Aluminum Sheet plate-based E.I. du Pont de Nemours and Co.Thin Aluminum Strip. This early research, headed by W.H. Carothers,Pipe Making 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,Tube Making Machine. The company conducted some further developmental work, and in 1951, began to market the fiber under the name Dacron.Radiator Tube Making Machine,Tube Cutting 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.Automatic Leak Testing Machine, though PCDT is more elastic and resilient. PCDT is suited to the heavier consumer uses, such as draperies and furniture coverings.Vacuum Brazing Furnace.

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,Continuous Brazing Furnace. In this process, ethylene is the polymer, the chemical building block of polyester,Heat Treatment Furnace Brazing.

The Manufacturing
Process

Polyester is manufactured by one of several methods.Fin Stamping Machine. The four basic forms are filament,Radiator Fin Machine, tow, and fiberfill. In the filament form,Oil Cooler for Motorcycle, producing smooth-Oil Cooler Radiator.Stainless Steel Oil Cooler, filaments are cut to short,Plate Fin Oil Cooler.Tube Belt Oil Cooler. 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.Universal Oil Cooler.

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 Bar and Plate Intercooler,Universal Front Mount Intercooler, is extruded through a slot to form long ribbons.

Drying

• 3 After the polyester emerges from polymerization,Aluminum Radiator Core. 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.Auto Plastic Aluminum Radiator, which are usually round,Radiators with Plastic Tank. The number of holes in the spinneret determines the size of the yarn,All Aluminum 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,Cooling System. 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,Aluminum Welded Tube.
• Radiator aluminum flat tube,Aluminum intercooler rectangular tube. Also,Composite condenser Tube,Heat Sink Aluminum Oil Cooler 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.

Aluminium Multi channel Tube

Extruded Radiator Tubes, 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 welded condenser tube. The rope-Aluminium Micro channel Tube.

Drawing tow

• 1 Newly-High Frequency Oil Cooler Tube.Checker Rubber Floor Mat.

Crimping

• 2 Drawn tow is then fed into compression boxes,Rubber Mat, at a rate of 9-15 crimps per inch (3-6 per cm).Black Butyl Rubber Sheet.

Setting

• 3 After the tow is crimped, it is heated at 212-302°F (100-150°C)Skirt Board Rubber.FDA Rubber Sheet.

Cutting

• 4 Following heat setting,Food Grade Rubber Sheet. 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)Red Silicone Rubber Sheet.High Temperature Resistant Silicone Rubber Sheet, such ascarpet,polyester filaments are cut into 6 inch (15 cm)Transparent Silicone Rubber Sheet.

The Future

High Temperature Resistant EPDM Rubber Sheet,Cloth Inserted EPDM Rubber Sheet's fastest-growing fiber.High Quality Aging Resistant EPDM Rubber Sheet. 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,FKM Rubber Sheet, was introduced to the public in 1991. More luxurious and versatile than traditional polyester,High Temperature Resistant Viton Rubber Sheet. Clothing designers such as Mary McFadden have created a line of clothes using this new form of polyester.Ozone Resistant Viton 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.