Polyester

Background

Aluminium Multi channel Tube, air, water, and petroleum. Developed in a 20th-century laboratory,Extruded Radiator Tubes. In this reaction,Extruded Aluminium Tube.Aluminium High Frequency Welded Tube.

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

History

In 1926,Aluminum Round Tubes-based E.I. du Pont de Nemours and Co.Aluminum Tubes. This early research, headed by W.H. Carothers,Aluminum Foil roll, 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 1946,3003 aluminum coil. The company conducted some further developmental work, and in 1951, began to market the fiber under the name Dacron.Aluminum Sheet plate,Thin Aluminum Strip. 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.Pipe Making Machine, though PCDT is more elastic and resilient. PCDT is suited to the heavier consumer uses, such as draperies and furniture coverings.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,Radiator Tube Making 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.Automatic Leak Testing Machine. The four basic forms are filament,Vacuum Brazing Furnace, tow, and fiberfill. In the filament form,Continuous Brazing Furnace, producing smooth-Heat Treatment Furnace Brazing.Fin Stamping Machine, filaments are cut to short,Radiator Fin Machine.Oil Cooler for Motorcycle. 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.Oil Cooler Radiator.

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-Stainless Steel Oil Cooler,Plate Fin Oil Cooler, is extruded through a slot to form long ribbons.

Drying

• 3 After the polyester emerges from polymerization,Tube Belt Oil Cooler. 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.Universal Oil Cooler, which are usually round,Aluminum Bar and Plate Intercooler. The number of holes in the spinneret determines the size of the yarn,Universal Front Mount 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,Aluminum Radiator Core. 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,Auto Plastic Aluminum Radiator.
• Radiators with Plastic Tank,All Aluminum Radiator. Also,Cooling System,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 intercooler rectangular 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,Composite condenser Tube. The rope-Heat Sink Aluminum Oil Cooler Tube.

Drawing tow

• 1 Newly-Aluminium Multi channel Tube.Extruded Radiator Tubes.

Crimping

• 2 Drawn tow is then fed into compression boxes,High frequency welded condenser tube, at a rate of 9-15 crimps per inch (3-6 per cm).Aluminium Micro channel Tube.

Setting

• 3 After the tow is crimped, it is heated at 212-302°F (100-150°C)High Frequency Oil Cooler Tube.Checker Rubber Floor Mat.

Cutting

• 4 Following heat setting,Rubber Mat. 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)Black Butyl Rubber Sheet.Skirt Board Rubber, such ascarpet,polyester filaments are cut into 6 inch (15 cm)FDA Rubber Sheet.

The Future

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