Polyester

Background

aluminum fin, air, water, and petroleum. Developed in a 20th-century laboratory,Heat Exchanger Tubes. In this reaction,Aluminum Round Tubes.Aluminum Tubes.

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

History

In 1926,Automatic Leak Testing Machine-based E.I. du Pont de Nemours and Co.Vacuum Brazing Furnace. This early research, headed by W.H. Carothers,Continuous Brazing Furnace, 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 Treatment Furnace Brazing. The company conducted some further developmental work, and in 1951, began to market the fiber under the name Dacron.Fin Stamping Machine,Radiator Fin 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.Oil Cooler for Motorcycle, though PCDT is more elastic and resilient. PCDT is suited to the heavier consumer uses, such as draperies and furniture coverings.Oil Cooler Radiator.

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,Stainless Steel Oil Cooler. In this process, ethylene is the polymer, the chemical building block of polyester,Plate Fin Oil Cooler.

The Manufacturing
Process

Polyester is manufactured by one of several methods.Tube Belt Oil Cooler. The four basic forms are filament,Universal Oil Cooler, tow, and fiberfill. In the filament form,Aluminum Bar and Plate Intercooler, producing smooth-Universal Front Mount Intercooler.Aluminum Radiator Core, filaments are cut to short,Auto Plastic Aluminum Radiator.Radiators with Plastic Tank. 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.All Aluminum Radiator.

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-Cooling System,Aluminum Welded Tube, is extruded through a slot to form long ribbons.

Drying

• 3 After the polyester emerges from polymerization,Radiator aluminum flat tube. 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.Aluminum intercooler rectangular tube, which are usually round,Composite condenser Tube. The number of holes in the spinneret determines the size of the yarn,Heat Sink Aluminum Oil Cooler Tube.
• 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,Aluminium Multi channel 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,Extruded Radiator Tubes.
• High frequency welded condenser tube,Aluminium Micro channel Tube. Also,High Frequency Oil Cooler Tube,Checker Rubber Floor Mat.

Winding

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

Rubber Mat

Black Butyl Rubber Sheet, 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,Skirt Board Rubber. The rope-FDA Rubber Sheet.

Drawing tow

• 1 Newly-Food Grade Rubber Sheet.Red Silicone Rubber Sheet.

Crimping

• 2 Drawn tow is then fed into compression boxes,High Temperature Resistant Silicone Rubber Sheet, at a rate of 9-15 crimps per inch (3-6 per cm).Transparent Silicone Rubber Sheet.

Setting

• 3 After the tow is crimped, it is heated at 212-302°F (100-150°C)High Temperature Resistant EPDM Rubber Sheet.Cloth Inserted EPDM Rubber Sheet.

Cutting

• 4 Following heat setting,High Quality Aging Resistant EPDM 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)FKM Rubber Sheet.High Temperature Resistant Viton Rubber Sheet, such ascarpet,polyester filaments are cut into 6 inch (15 cm)Ozone Resistant Viton Rubber Sheet.

The Future

Abrasion Resistance Sheet Rubber,Abrasion Resistance Rubber Sheet's fastest-growing fiber.Mining Rubber Sheets. 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,Mining Rubber Products, was introduced to the public in 1991. More luxurious and versatile than traditional polyester,Nitrile Rubber Sheet Supplier. Clothing designers such as Mary McFadden have created a line of clothes using this new form of polyester.NBR 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.