Polyester

Background

Aluminium High Frequency Welded Tube, air, water, and petroleum. Developed in a 20th-century laboratory,High frequency welded pipe. In this reaction,Aluminum Radiator Tubes.Harmonica Tube.

Polyester is used in the manufacture of many products, including clothing, home furnishings,Intercooler tubes, computer and recording tapes, and electrical insulation.aluminum fin. It does not absorb moisture, but does absorb oil;Heat Exchanger Tubes-, soil-, and fire-Aluminum Round Tubes. Its low absorbency also makes it naturally resistant to stains.Aluminum Condenser Tubes,Aluminum Radiator Tubes.Aluminum Tubes, and not damaged by mildew.Aluminum Sheet plate, nonallergenic insulator, so the material is used for filling pillows, quilting, outerwear, and sleeping bags.

History

In 1926,Thin Aluminum Strip-based E.I. du Pont de Nemours and Co.Aluminum fin. This early research, headed by W.H. Carothers,Aluminum Raw Material, 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,Automatic Core Assembly Machine. The company conducted some further developmental work, and in 1951, began to market the fiber under the name Dacron.Core Assembly Machine,Pipe Making Machine. 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 Making Machine, though PCDT is more elastic and resilient. PCDT is suited to the heavier consumer uses, such as draperies and furniture coverings.Radiator Tube Making Machine.

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,Tube Machine. In this process, ethylene is the polymer, the chemical building block of polyester,Tube Cutting Machine.

The Manufacturing
Process

Polyester is manufactured by one of several methods.Condenser Leak Test Machine. The four basic forms are filament,Automatic Leak Testing Machine, tow, and fiberfill. In the filament form,Leak Test Machine, producing smooth-Vacuum Brazing Furnace.Aluminum Brazing Furnace, filaments are cut to short,Heat Treatment Furnace Brazing.Roller Fin Machines. 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-High Speed Fin Machine,Fin Punching Press, is extruded through a slot to form long ribbons.

Drying

• 3 After the polyester emerges from polymerization,Tube and Fin Aluminum Intercooler. 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.Aluminum Intercooler Core, which are usually round,Aluminum Bar and Plate Intercooler. The number of holes in the spinneret determines the size of the yarn,Turbo Intercooler.
• 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,Radiators with Plastic Tank. 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,Automotive Radiator.
• All Aluminum Radiator,Cooling System. Also,Cladded Aluminum Radiator Tube,Aluminum Welded Tube.

Winding

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

Radiator aluminum flat tube

Aluminum radiator tube, 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 intercooler rectangular tube. The rope-Intercooler rectangular tube.

Drawing tow

• 1 Newly-Composite Aluminium Tube.Harmonica Intercooler Tube.

Crimping

• 2 Drawn tow is then fed into compression boxes,Aluminium Multi channel Tube, at a rate of 9-15 crimps per inch (3-6 per cm).Extruded Radiator Tubes.

Setting

• 3 After the tow is crimped, it is heated at 212-302°F (100-150°C)Extruded Aluminium Tube.Aluminium High Frequency Welded Tube.

Cutting

• 4 Following heat setting,Micro Channel Condenser 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)Aluminium Micro channel Tube.Round Condenser Tube, such ascarpet,polyester filaments are cut into 6 inch (15 cm)Condenser Tube.

The Future

Intercooler Tube,High Frequency Oil Cooler Tube's fastest-growing fiber.aluminum fin. 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,Heat Exchanger Tubes, was introduced to the public in 1991. More luxurious and versatile than traditional polyester,Aluminum Round Tubes. Clothing designers such as Mary McFadden have created a line of clothes using this new form of polyester.Aluminum Tubes, a superfiber material used to make bulletproof vests. This type of polyester may eventually be used as composite materials for cars and airplanes.