Polyester

Background

Aluminum Round Tubes, air, water, and petroleum. Developed in a 20th-century laboratory,Aluminum Tubes. In this reaction,Aluminum Foil roll.3003 aluminum coil.

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

History

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

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,Tube Belt Oil Cooler. In this process, ethylene is the polymer, the chemical building block of polyester,Universal Oil Cooler.

The Manufacturing
Process

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

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-Radiator aluminum flat tube,Aluminum intercooler rectangular tube, is extruded through a slot to form long ribbons.

Drying

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

Winding

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

Skirt Board Rubber

FDA 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,Food Grade Rubber Sheet. The rope-Red Silicone Rubber Sheet.

Drawing tow

• 1 Newly-High Temperature Resistant Silicone Rubber Sheet.Transparent Silicone Rubber Sheet.

Crimping

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

Setting

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

Cutting

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

The Future

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