Polyester

Background

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

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

History

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

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,Aluminum Bar and Plate Intercooler. In this process, ethylene is the polymer, the chemical building block of polyester,Universal Front Mount Intercooler.

The Manufacturing
Process

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

Drying

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

Food Grade Rubber Sheet

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

Drawing tow

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

Crimping

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

Setting

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

Cutting

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

The Future

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