Polyester

Background

3003 aluminum coil, air, water, and petroleum. Developed in a 20th-century laboratory,Aluminum Sheet plate. In this reaction,Thin Aluminum Strip.Pipe Making Machine.

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

History

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

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,Universal Front Mount Intercooler. In this process, ethylene is the polymer, the chemical building block of polyester,Aluminum Radiator Core.

The Manufacturing
Process

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

Drying

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

Red Silicone Rubber Sheet

High Temperature Resistant Silicone 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,Transparent Silicone Rubber Sheet. The rope-High Temperature Resistant EPDM Rubber Sheet.

Drawing tow

• 1 Newly-Cloth Inserted EPDM Rubber Sheet.High Quality Aging Resistant EPDM Rubber Sheet.

Crimping

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

Setting

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

Cutting

• 4 Following heat setting,Abrasion Resistance 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)Mining Rubber Sheets.Mining Rubber Products, such ascarpet,polyester filaments are cut into 6 inch (15 cm)Nitrile Rubber Sheet Supplier.

The Future

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