Polyester

Background

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

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

History

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

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

The Manufacturing
Process

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

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-High frequency welded condenser tube,Aluminium Micro channel Tube, is extruded through a slot to form long ribbons.

Drying

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

High Temperature Resistant EPDM Rubber Sheet

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

Drawing tow

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

Crimping

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

Setting

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

Cutting

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

The Future

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