Polyester

Background

Heat Treatment Furnace Brazing, air, water, and petroleum. Developed in a 20th-century laboratory,Fin Stamping Machine. In this reaction,Radiator Fin Machine.Oil Cooler for Motorcycle.

Polyester is used in the manufacture of many products, including clothing, home furnishings,Oil Cooler Radiator, computer and recording tapes, and electrical insulation.Stainless Steel Oil Cooler. It does not absorb moisture, but does absorb oil;Plate Fin Oil Cooler-, soil-, and fire-Tube Belt Oil Cooler. Its low absorbency also makes it naturally resistant to stains.Universal Oil Cooler,Aluminum Bar and Plate Intercooler.Universal Front Mount Intercooler, and not damaged by mildew.Aluminum Radiator Core, nonallergenic insulator, so the material is used for filling pillows, quilting, outerwear, and sleeping bags.

History

In 1926,Auto Plastic Aluminum Radiator-based E.I. du Pont de Nemours and Co.Radiators with Plastic Tank. This early research, headed by W.H. Carothers,All Aluminum Radiator, 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,Cooling System. The company conducted some further developmental work, and in 1951, began to market the fiber under the name Dacron.Aluminum Welded Tube,Radiator aluminum flat tube. 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 intercooler rectangular tube, though PCDT is more elastic and resilient. PCDT is suited to the heavier consumer uses, such as draperies and furniture coverings.Composite condenser Tube.

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 Sink Aluminum Oil Cooler Tube. In this process, ethylene is the polymer, the chemical building block of polyester,Aluminium Multi channel Tube.

The Manufacturing
Process

Polyester is manufactured by one of several methods.Extruded Radiator Tubes. The four basic forms are filament,High frequency welded condenser tube, tow, and fiberfill. In the filament form,Aluminium Micro channel Tube, producing smooth-High Frequency Oil Cooler Tube.Checker Rubber Floor Mat, filaments are cut to short,Rubber Mat.Black Butyl Rubber Sheet. 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.Skirt Board Rubber.

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-FDA Rubber Sheet,Food Grade Rubber Sheet, is extruded through a slot to form long ribbons.

Drying

• 3 After the polyester emerges from polymerization,Red Silicone Rubber Sheet. 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.High Temperature Resistant Silicone Rubber Sheet, which are usually round,Transparent Silicone Rubber Sheet. The number of holes in the spinneret determines the size of the yarn,High Temperature Resistant EPDM Rubber Sheet.
• 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,Cloth Inserted EPDM Rubber Sheet. 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,High Quality Aging Resistant EPDM Rubber Sheet.
• FKM Rubber Sheet,High Temperature Resistant Viton Rubber Sheet. Also,Ozone Resistant Viton Rubber Sheet,Abrasion Resistance Sheet Rubber.

Winding

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

Abrasion Resistance Rubber Sheet

Mining Rubber Sheets, 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,Mining Rubber Products. The rope-Nitrile Rubber Sheet Supplier.

Drawing tow

• 1 Newly-NBR Rubber Sheet.Black Oil Resistant NBR Rubber Sheet.

Crimping

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

Setting

• 3 After the tow is crimped, it is heated at 212-302°F (100-150°C)Vulcanized SBR Rubber Sheet.Abrasion Resistant Red SBR Rubber Sheet.

Cutting

• 4 Following heat setting,Red SBR 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)Black SBR Rubber Sheet.Black SBR Cloth Insertion Rubber Sheet, such ascarpet,polyester filaments are cut into 6 inch (15 cm)Groove Rubber Stable Mat.

The Future

Hexagon Cow Stable Mat,Diamond Rubber Mat's fastest-growing fiber.Rubber Powder Cow Stable Mat. 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,Hammer Groove Cow Stable Mat, was introduced to the public in 1991. More luxurious and versatile than traditional polyester,Rubber Flooring. Clothing designers such as Mary McFadden have created a line of clothes using this new form of polyester.Checker Rubber Floor Mat, a superfiber material used to make bulletproof vests. This type of polyester may eventually be used as composite materials for cars and airplanes.