Polyester

Background

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

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

History

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

The Manufacturing
Process

Polyester is manufactured by one of several methods.High frequency welded condenser tube. The four basic forms are filament,Aluminium Micro channel Tube, tow, and fiberfill. In the filament form,High Frequency Oil Cooler Tube, producing smooth-Checker Rubber Floor Mat.Rubber Mat, filaments are cut to short,Black Butyl Rubber Sheet.Skirt Board Rubber. 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.FDA 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-Food Grade Rubber Sheet,Red Silicone Rubber Sheet, is extruded through a slot to form long ribbons.

Drying

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

Mining Rubber Sheets

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

Drawing tow

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

Crimping

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

Setting

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

Cutting

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

The Future

Diamond Rubber Mat,Rubber Powder Cow Stable Mat's fastest-growing fiber.Hammer Groove 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,Rubber Flooring, was introduced to the public in 1991. More luxurious and versatile than traditional polyester,Checker Rubber Floor Mat. Clothing designers such as Mary McFadden have created a line of clothes using this new form of polyester.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.