Polyester

Background

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

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

History

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

The Manufacturing
Process

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

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-Universal Front Mount Intercooler,Aluminum Radiator Core, is extruded through a slot to form long ribbons.

Drying

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

Extruded Radiator Tubes

High frequency welded condenser 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,Aluminium Micro channel Tube. The rope-High Frequency Oil Cooler Tube.

Drawing tow

• 1 Newly-Checker Rubber Floor Mat.Rubber Mat.

Crimping

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

Setting

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

Cutting

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

The Future

Cloth Inserted EPDM Rubber Sheet,High Quality Aging Resistant EPDM Rubber Sheet's fastest-growing fiber.FKM 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,High Temperature Resistant Viton Rubber Sheet, was introduced to the public in 1991. More luxurious and versatile than traditional polyester,Ozone Resistant Viton Rubber Sheet. Clothing designers such as Mary McFadden have created a line of clothes using this new form of polyester.Abrasion Resistance Sheet Rubber, a superfiber material used to make bulletproof vests. This type of polyester may eventually be used as composite materials for cars and airplanes.