Polyester

Background

Universal Oil Cooler, air, water, and petroleum. Developed in a 20th-century laboratory,Aluminum Bar and Plate Intercooler. In this reaction,Universal Front Mount Intercooler.Aluminum Radiator Core.

Polyester is used in the manufacture of many products, including clothing, home furnishings,Auto Plastic Aluminum Radiator, computer and recording tapes, and electrical insulation.Radiators with Plastic Tank. It does not absorb moisture, but does absorb oil;All Aluminum Radiator-, soil-, and fire-Cooling System. Its low absorbency also makes it naturally resistant to stains.Aluminum Welded Tube,Radiator aluminum flat tube.Aluminum intercooler rectangular tube, and not damaged by mildew.Composite condenser Tube, nonallergenic insulator, so the material is used for filling pillows, quilting, outerwear, and sleeping bags.

History

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

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,Black Butyl Rubber Sheet. In this process, ethylene is the polymer, the chemical building block of polyester,Skirt Board Rubber.

The Manufacturing
Process

Polyester is manufactured by one of several methods.FDA Rubber Sheet. The four basic forms are filament,Food Grade Rubber Sheet, tow, and fiberfill. In the filament form,Red Silicone Rubber Sheet, producing smooth-High Temperature Resistant Silicone Rubber Sheet.Transparent Silicone Rubber Sheet, filaments are cut to short,High Temperature Resistant EPDM Rubber Sheet.Cloth Inserted EPDM 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.High Quality Aging Resistant EPDM 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-FKM Rubber Sheet,High Temperature Resistant Viton Rubber Sheet, is extruded through a slot to form long ribbons.

Drying

• 3 After the polyester emerges from polymerization,Ozone Resistant Viton 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.Abrasion Resistance Sheet Rubber, which are usually round,Abrasion Resistance Rubber Sheet. The number of holes in the spinneret determines the size of the yarn,Mining Rubber Sheets.
• 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,Mining Rubber Products. 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,Nitrile Rubber Sheet Supplier.
• NBR Rubber Sheet,Black Oil Resistant NBR Rubber Sheet. Also,SBR Rubber Sheet,Industrial Black SBR 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.

Vulcanized SBR Rubber Sheet

Abrasion Resistant Red SBR 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,Red SBR Rubber Sheet. The rope-Black SBR Rubber Sheet.

Drawing tow

• 1 Newly-Black SBR Cloth Insertion Rubber Sheet.Groove Rubber Stable Mat.

Crimping

• 2 Drawn tow is then fed into compression boxes,Hexagon Cow Stable Mat, at a rate of 9-15 crimps per inch (3-6 per cm).Diamond Rubber Mat.

Setting

• 3 After the tow is crimped, it is heated at 212-302°F (100-150°C)Rubber Powder Cow Stable Mat.Hammer Groove Cow Stable Mat.

Cutting

• 4 Following heat setting,Rubber Flooring. 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)Checker Rubber Floor Mat.Rubber Floor Mat, such ascarpet,polyester filaments are cut into 6 inch (15 cm)Skirt Board Rubber.

The Future

Skirt Board Rubber,FDA Rubber Sheet's fastest-growing fiber.FDA Rubber. 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,High Temperature Resistant Silicone Rubber Sheet, was introduced to the public in 1991. More luxurious and versatile than traditional polyester,Silicone Rubber. Clothing designers such as Mary McFadden have created a line of clothes using this new form of polyester.High Temperature Resistant EPDM 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.