Polyester

Background

Aluminum Sheet plate, air, water, and petroleum. Developed in a 20th-century laboratory,Thin Aluminum Strip. In this reaction,Aluminum fin.Aluminum Raw Material.

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

History

In 1926,Automatic Leak Testing Machine-based E.I. du Pont de Nemours and Co.Leak Test Machine. This early research, headed by W.H. Carothers,Vacuum Brazing Furnace, 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 Brazing Furnace. The company conducted some further developmental work, and in 1951, began to market the fiber under the name Dacron.Heat Treatment Furnace Brazing,Roller Fin Machines. 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.Fin Stamping Machine, though PCDT is more elastic and resilient. PCDT is suited to the heavier consumer uses, such as draperies and furniture coverings.High Speed Fin 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,Fin Punching Press. In this process, ethylene is the polymer, the chemical building block of polyester,Tube and Fin Aluminum Intercooler.

The Manufacturing
Process

Polyester is manufactured by one of several methods.Aluminum Intercooler Core. The four basic forms are filament,Aluminum Bar and Plate Intercooler, tow, and fiberfill. In the filament form,Turbo Intercooler, producing smooth-Radiators with Plastic Tank.Automotive Radiator, filaments are cut to short,All Aluminum Radiator.Cooling System. 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.Cladded Aluminum Radiator 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-Aluminum Welded Tube,Radiator aluminum flat tube, is extruded through a slot to form long ribbons.

Drying

• 3 After the polyester emerges from polymerization,Aluminum radiator 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.Aluminum intercooler rectangular tube, which are usually round,Intercooler rectangular tube. The number of holes in the spinneret determines the size of the yarn,Composite Aluminium 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,Harmonica Intercooler 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,Aluminium Multi channel Tube.
• Extruded Radiator Tubes,Extruded Aluminium Tube. Also,Aluminium High Frequency Welded Tube,Micro Channel Condenser 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.

Aluminium Micro channel Tube

Round Condenser 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,Condenser Tube. The rope-Intercooler Tube.

Drawing tow

• 1 Newly-High Frequency Oil Cooler Tube.aluminum fin.

Crimping

• 2 Drawn tow is then fed into compression boxes,Heat Exchanger Tubes, at a rate of 9-15 crimps per inch (3-6 per cm).Aluminum Round Tubes.

Setting

• 3 After the tow is crimped, it is heated at 212-302°F (100-150°C)Aluminum Tubes.Aluminum Foil roll.

Cutting

• 4 Following heat setting,3003 aluminum coil. 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)Aluminum Sheet plate.Thin Aluminum Strip, such ascarpet,polyester filaments are cut into 6 inch (15 cm)Pipe Making Machine.

The Future

Tube Making Machine,Radiator Tube Making Machine's fastest-growing fiber.Tube Cutting Machine. 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,Automatic Leak Testing Machine, was introduced to the public in 1991. More luxurious and versatile than traditional polyester,Vacuum Brazing Furnace. Clothing designers such as Mary McFadden have created a line of clothes using this new form of polyester.Continuous Brazing Furnace, a superfiber material used to make bulletproof vests. This type of polyester may eventually be used as composite materials for cars and airplanes.