Polyester

Background

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Polyester is used in the manufacture of many products, including clothing, home furnishings,Indoor Grow Light 840W With Seoul LED, computer and recording tapes, and electrical insulation.840W Grow Light LM301H For Indoor Plants. It does not absorb moisture, but does absorb oil;ELENOR X8 LED indoor grow light 960W-, soil-, and fire-8 Bars LED Indoor Grow Light 640W. Its low absorbency also makes it naturally resistant to stains.8 Bars LED Indoor Grow Light 680W,Led Grow Light.Aluminum Bar, and not damaged by mildew.Aluminum Tubes, nonallergenic insulator, so the material is used for filling pillows, quilting, outerwear, and sleeping bags.

History

In 1926,Extruded Aluminium Tube-based E.I. du Pont de Nemours and Co.Extruded Aluminium Tube. This early research, headed by W.H. Carothers,Aluminum tube, 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,Harmonica Tube. The company conducted some further developmental work, and in 1951, began to market the fiber under the name Dacron.Aluminium High Frequency Welded Tube,High frequency welded pipe. 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 Tubes, though PCDT is more elastic and resilient. PCDT is suited to the heavier consumer uses, such as draperies and furniture coverings.Harmonica Tube.

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,Intercooler tubes. In this process, ethylene is the polymer, the chemical building block of polyester,aluminum fin.

The Manufacturing
Process

Polyester is manufactured by one of several methods.Heat Exchanger Tubes. The four basic forms are filament,Aluminum Round Tubes, tow, and fiberfill. In the filament form,Aluminum Condenser Tubes, producing smooth-Aluminum Radiator Tubes.Aluminum Tubes, filaments are cut to short,Aluminum Sheet plate.Thin Aluminum Strip. 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 fin.

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-Aluminum Raw Material,Automatic Core Assembly Machine, is extruded through a slot to form long ribbons.

Drying

• 3 After the polyester emerges from polymerization,Core Assembly Machine. 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.Pipe Making Machine, which are usually round,Tube Making Machine. The number of holes in the spinneret determines the size of the yarn,Radiator Tube Making Machine.
• 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,Tube Machine. 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,Tube Cutting Machine.
• Condenser Leak Test Machine,Automatic Leak Testing Machine. Also,Leak Test Machine,Vacuum Brazing Furnace.

Winding

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

Aluminum Brazing Furnace

Heat Treatment Furnace Brazing, 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,Roller Fin Machines. The rope-Fin Stamping Machine.

Drawing tow

• 1 Newly-High Speed Fin Machine.Fin Punching Press.

Crimping

• 2 Drawn tow is then fed into compression boxes,Tube and Fin Aluminum Intercooler, at a rate of 9-15 crimps per inch (3-6 per cm).Aluminum Intercooler Core.

Setting

• 3 After the tow is crimped, it is heated at 212-302°F (100-150°C)Aluminum Bar and Plate Intercooler.Turbo Intercooler.

Cutting

• 4 Following heat setting,Radiators with Plastic Tank. 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)Automotive Radiator.All Aluminum Radiator, such ascarpet,polyester filaments are cut into 6 inch (15 cm)Cooling System.

The Future

Cladded Aluminum Radiator Tube,Aluminum Welded Tube's fastest-growing fiber.Radiator aluminum flat tube. 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,Aluminum radiator tube, was introduced to the public in 1991. More luxurious and versatile than traditional polyester,Aluminum intercooler rectangular tube. Clothing designers such as Mary McFadden have created a line of clothes using this new form of polyester.Intercooler rectangular tube, a superfiber material used to make bulletproof vests. This type of polyester may eventually be used as composite materials for cars and airplanes.