Polyester

Background

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Polyester is used in the manufacture of many products, including clothing, home furnishings,8 Bars Vertical Farming Grow Light With Seoul LED, computer and recording tapes, and electrical insulation.Grow Tent Light. It does not absorb moisture, but does absorb oil;320W Grow Light Lm301h For Indoor Plants-, soil-, and fire-480W Grow light LM301H for indoor plants. Its low absorbency also makes it naturally resistant to stains.LED Indoor Grow light 640W,720W Indoor Grow Light With Samsung LM301B.Indoor Grow Light 720W With Seoul LED, and not damaged by mildew.LED Indoor Grow Light 840W, nonallergenic insulator, so the material is used for filling pillows, quilting, outerwear, and sleeping bags.

History

In 1926,Indoor Grow Light 840W With Seoul LED-based E.I. du Pont de Nemours and Co.840W Grow Light LM301H For Indoor Plants. This early research, headed by W.H. Carothers,ELENOR X8 LED indoor grow light 960W, 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 1946,8 Bars LED Indoor Grow Light 640W. The company conducted some further developmental work, and in 1951, began to market the fiber under the name Dacron.8 Bars LED Indoor Grow Light 680W,Led Grow Light. 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 Bar, though PCDT is more elastic and resilient. PCDT is suited to the heavier consumer uses, such as draperies and furniture coverings.Aluminum Tubes.

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,Extruded Aluminium Tube. In this process, ethylene is the polymer, the chemical building block of polyester,Extruded Aluminium Tube.

The Manufacturing
Process

Polyester is manufactured by one of several methods.Aluminum tube. The four basic forms are filament,Harmonica Tube, tow, and fiberfill. In the filament form,Aluminium High Frequency Welded Tube, producing smooth-High frequency welded pipe.Aluminum Radiator Tubes, filaments are cut to short,Harmonica Tube.Intercooler tubes. 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-Heat Exchanger Tubes,Aluminum Round Tubes, is extruded through a slot to form long ribbons.

Drying

• 3 After the polyester emerges from polymerization,Aluminum Condenser Tubes. 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 Radiator Tubes, which are usually round,Aluminum Tubes. The number of holes in the spinneret determines the size of the yarn,Aluminum Sheet plate.
• 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,Thin Aluminum Strip. 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,Aluminum fin.
• Aluminum Raw Material,Automatic Core Assembly Machine. Also,Core Assembly Machine,Pipe Making Machine.

Winding

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

Tube Making Machine

Radiator Tube Making Machine, 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,Tube Machine. The rope-Tube Cutting Machine.

Drawing tow

• 1 Newly-Condenser Leak Test Machine.Automatic Leak Testing Machine.

Crimping

• 2 Drawn tow is then fed into compression boxes,Leak Test Machine, at a rate of 9-15 crimps per inch (3-6 per cm).Vacuum Brazing Furnace.

Setting

• 3 After the tow is crimped, it is heated at 212-302°F (100-150°C)Aluminum Brazing Furnace.Heat Treatment Furnace Brazing.

Cutting

• 4 Following heat setting,Roller Fin Machines. 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)Fin Stamping Machine.High Speed Fin Machine, such ascarpet,polyester filaments are cut into 6 inch (15 cm)Fin Punching Press.

The Future

Tube and Fin Aluminum Intercooler,Aluminum Intercooler Core's fastest-growing fiber.Aluminum Bar and Plate Intercooler. 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,Turbo Intercooler, was introduced to the public in 1991. More luxurious and versatile than traditional polyester,Radiators with Plastic Tank. Clothing designers such as Mary McFadden have created a line of clothes using this new form of polyester.Automotive Radiator, a superfiber material used to make bulletproof vests. This type of polyester may eventually be used as composite materials for cars and airplanes.