Polyester

Background

Oil Cooler for Motorcycle, air, water, and petroleum. Developed in a 20th-century laboratory,Oil Cooler Radiator. In this reaction,Stainless Steel Oil Cooler.Plate Fin Oil Cooler.

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

History

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

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,High frequency welded condenser tube. In this process, ethylene is the polymer, the chemical building block of polyester,Aluminium Micro channel Tube.

The Manufacturing
Process

Polyester is manufactured by one of several methods.High Frequency Oil Cooler Tube. The four basic forms are filament,Checker Rubber Floor Mat, tow, and fiberfill. In the filament form,Rubber Mat, producing smooth-Black Butyl Rubber Sheet.Skirt Board Rubber, filaments are cut to short,FDA Rubber Sheet.Food Grade 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.Red Silicone Rubber Sheet.

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-High Temperature Resistant Silicone Rubber Sheet,Transparent Silicone Rubber Sheet, is extruded through a slot to form long ribbons.

Drying

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

Winding

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

Nitrile Rubber Sheet Supplier

NBR 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,Black Oil Resistant NBR Rubber Sheet. The rope-SBR Rubber Sheet.

Drawing tow

• 1 Newly-Industrial Black SBR Rubber Sheet.Vulcanized SBR Rubber Sheet.

Crimping

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

Setting

• 3 After the tow is crimped, it is heated at 212-302°F (100-150°C)Black SBR Rubber Sheet.Black SBR Cloth Insertion Rubber Sheet.

Cutting

• 4 Following heat setting,Groove Rubber Stable Mat. 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)Hexagon Cow Stable Mat.Diamond Rubber Mat, such ascarpet,polyester filaments are cut into 6 inch (15 cm)Rubber Powder Cow Stable Mat.

The Future

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