Polyester

Background

Thin Aluminum Strip, air, water, and petroleum. Developed in a 20th-century laboratory,Pipe Making Machine. In this reaction,Tube Making Machine.Radiator Tube Making Machine.

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

History

In 1926,Oil Cooler Radiator-based E.I. du Pont de Nemours and Co.Stainless Steel Oil Cooler. This early research, headed by W.H. Carothers,Plate Fin Oil Cooler, 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,Tube Belt Oil Cooler. The company conducted some further developmental work, and in 1951, began to market the fiber under the name Dacron.Universal Oil Cooler,Aluminum Bar and Plate Intercooler. 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.Universal Front Mount Intercooler, though PCDT is more elastic and resilient. PCDT is suited to the heavier consumer uses, such as draperies and furniture coverings.Aluminum Radiator Core.

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,Auto Plastic Aluminum Radiator. In this process, ethylene is the polymer, the chemical building block of polyester,Radiators with Plastic Tank.

The Manufacturing
Process

Polyester is manufactured by one of several methods.All Aluminum Radiator. The four basic forms are filament,Cooling System, tow, and fiberfill. In the filament form,Aluminum Welded Tube, producing smooth-Radiator aluminum flat tube.Aluminum intercooler rectangular tube, filaments are cut to short,Composite condenser Tube.Heat Sink Aluminum Oil Cooler Tube. 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.Aluminium Multi channel 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-Extruded Radiator Tubes,High frequency welded condenser tube, is extruded through a slot to form long ribbons.

Drying

• 3 After the polyester emerges from polymerization,Aluminium Micro channel 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.High Frequency Oil Cooler Tube, which are usually round,Checker Rubber Floor Mat. The number of holes in the spinneret determines the size of the yarn,Rubber Mat.
• 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,Black Butyl 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,Skirt Board Rubber.
• FDA Rubber Sheet,Food Grade Rubber Sheet. Also,Red Silicone Rubber Sheet,High Temperature Resistant Silicone 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.

Transparent Silicone Rubber Sheet

High Temperature Resistant EPDM 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,Cloth Inserted EPDM Rubber Sheet. The rope-High Quality Aging Resistant EPDM Rubber Sheet.

Drawing tow

• 1 Newly-FKM Rubber Sheet.High Temperature Resistant Viton Rubber Sheet.

Crimping

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

Setting

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

Cutting

• 4 Following heat setting,Mining Rubber Products. 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)Nitrile Rubber Sheet Supplier.NBR Rubber Sheet, such ascarpet,polyester filaments are cut into 6 inch (15 cm)Black Oil Resistant NBR Rubber Sheet.

The Future

SBR Rubber Sheet,Industrial Black SBR Rubber Sheet's fastest-growing fiber.Vulcanized SBR Rubber Sheet. 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,Abrasion Resistant Red SBR Rubber Sheet, was introduced to the public in 1991. More luxurious and versatile than traditional polyester,Red SBR Rubber Sheet. Clothing designers such as Mary McFadden have created a line of clothes using this new form of polyester.Black 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.