Polyester

Background

Intercooler rectangular tube, air, water, and petroleum. Developed in a 20th-century laboratory,Composite Aluminium Tube. In this reaction,Harmonica Intercooler Tube.Aluminium Multi channel Tube.

Polyester is used in the manufacture of many products, including clothing, home furnishings,Extruded Radiator Tubes, computer and recording tapes, and electrical insulation.Extruded Aluminium Tube. It does not absorb moisture, but does absorb oil;Aluminium High Frequency Welded Tube-, soil-, and fire-Micro Channel Condenser Tube. Its low absorbency also makes it naturally resistant to stains.Aluminium Micro channel Tube,Round Condenser Tube.Condenser Tube, and not damaged by mildew.Intercooler Tube, nonallergenic insulator, so the material is used for filling pillows, quilting, outerwear, and sleeping bags.

History

In 1926,High Frequency Oil Cooler Tube-based E.I. du Pont de Nemours and Co.aluminum fin. This early research, headed by W.H. Carothers,Heat Exchanger 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,Aluminum Round Tubes. The company conducted some further developmental work, and in 1951, began to market the fiber under the name Dacron.Aluminum Tubes,Aluminum Foil roll. 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.3003 aluminum coil, though PCDT is more elastic and resilient. PCDT is suited to the heavier consumer uses, such as draperies and furniture coverings.Aluminum Sheet plate.

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,Thin Aluminum Strip. In this process, ethylene is the polymer, the chemical building block of polyester,Pipe Making Machine.

The Manufacturing
Process

Polyester is manufactured by one of several methods.Tube Making Machine. The four basic forms are filament,Radiator Tube Making Machine, tow, and fiberfill. In the filament form,Tube Cutting Machine, producing smooth-Automatic Leak Testing Machine.Vacuum Brazing Furnace, filaments are cut to short,Continuous Brazing Furnace.Heat Treatment Furnace Brazing. 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.Fin Stamping Machine.

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-Radiator Fin Machine,Oil Cooler for Motorcycle, is extruded through a slot to form long ribbons.

Drying

• 3 After the polyester emerges from polymerization,Oil Cooler Radiator. 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.Stainless Steel Oil Cooler, which are usually round,Plate Fin Oil Cooler. The number of holes in the spinneret determines the size of the yarn,Tube Belt Oil Cooler.
• 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,Universal Oil Cooler. 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,Aluminum Bar and Plate Intercooler.
• Universal Front Mount Intercooler,Aluminum Radiator Core. Also,Auto Plastic Aluminum Radiator,Radiators with Plastic Tank.

Winding

• 8 After the polyester yarn is drawn, it is wound on large bobbins or flat-wound packages, ready to be woven into material.

All Aluminum Radiator

Cooling System, 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,Aluminum Welded Tube. The rope-Radiator aluminum flat tube.

Drawing tow

• 1 Newly-Aluminum intercooler rectangular tube.Composite condenser Tube.

Crimping

• 2 Drawn tow is then fed into compression boxes,Heat Sink Aluminum Oil Cooler Tube, at a rate of 9-15 crimps per inch (3-6 per cm).Aluminium Multi channel Tube.

Setting

• 3 After the tow is crimped, it is heated at 212-302°F (100-150°C)Extruded Radiator Tubes.High frequency welded condenser tube.

Cutting

• 4 Following heat setting,Aluminium Micro channel Tube. 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)High Frequency Oil Cooler Tube.Checker Rubber Floor Mat, such ascarpet,polyester filaments are cut into 6 inch (15 cm)Rubber Mat.

The Future

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