Polyester

Background

Aluminum Raw Material, air, water, and petroleum. Developed in a 20th-century laboratory,Automatic Core Assembly Machine. In this reaction,Core Assembly Machine.Pipe Making Machine.

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

History

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

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,Aluminum Bar and Plate Intercooler. In this process, ethylene is the polymer, the chemical building block of polyester,Turbo Intercooler.

The Manufacturing
Process

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

Drying

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

Intercooler Tube

High Frequency Oil Cooler 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 fin. The rope-Heat Exchanger Tubes.

Drawing tow

• 1 Newly-Aluminum Round Tubes.Aluminum Tubes.

Crimping

• 2 Drawn tow is then fed into compression boxes,Aluminum Foil roll, at a rate of 9-15 crimps per inch (3-6 per cm).3003 aluminum coil.

Setting

• 3 After the tow is crimped, it is heated at 212-302°F (100-150°C)Aluminum Sheet plate.Thin Aluminum Strip.

Cutting

• 4 Following heat setting,Pipe Making Machine. 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)Tube Making Machine.Radiator Tube Making Machine, such ascarpet,polyester filaments are cut into 6 inch (15 cm)Tube Cutting Machine.

The Future

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