Polyester

Background

Indoor Grow Light 720W With Seoul LED, air, water, and petroleum. Developed in a 20th-century laboratory,LED Indoor Grow Light 840W. In this reaction,Indoor Grow Light 840W With Seoul LED.840W Grow Light LM301H For Indoor Plants.

Polyester is used in the manufacture of many products, including clothing, home furnishings,ELENOR X8 LED indoor grow light 960W, computer and recording tapes, and electrical insulation.8 Bars LED Indoor Grow Light 640W. It does not absorb moisture, but does absorb oil;8 Bars LED Indoor Grow Light 680W-, soil-, and fire-Led Grow Light. Its low absorbency also makes it naturally resistant to stains.Aluminum Bar,Aluminum Tubes.Extruded Aluminium Tube, and not damaged by mildew.Extruded Aluminium Tube, nonallergenic insulator, so the material is used for filling pillows, quilting, outerwear, and sleeping bags.

History

In 1926,Aluminum tube-based E.I. du Pont de Nemours and Co.Harmonica Tube. This early research, headed by W.H. Carothers,Aluminium High Frequency Welded Tube, 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,High frequency welded pipe. The company conducted some further developmental work, and in 1951, began to market the fiber under the name Dacron.Aluminum Radiator Tubes,Harmonica Tube. 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.Intercooler tubes, though PCDT is more elastic and resilient. PCDT is suited to the heavier consumer uses, such as draperies and furniture coverings.aluminum fin.

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,Heat Exchanger Tubes. In this process, ethylene is the polymer, the chemical building block of polyester,Aluminum Round Tubes.

The Manufacturing
Process

Polyester is manufactured by one of several methods.Aluminum Condenser Tubes. The four basic forms are filament,Aluminum Radiator Tubes, tow, and fiberfill. In the filament form,Aluminum Tubes, producing smooth-Aluminum Sheet plate.Thin Aluminum Strip, filaments are cut to short,Aluminum fin.Aluminum Raw Material. 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.Automatic Core Assembly 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-Core Assembly Machine,Pipe Making Machine, is extruded through a slot to form long ribbons.

Drying

• 3 After the polyester emerges from polymerization,Tube Making Machine. 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.Radiator Tube Making Machine, which are usually round,Tube Machine. The number of holes in the spinneret determines the size of the yarn,Tube Cutting Machine.
• 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,Condenser Leak Test Machine. 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,Automatic Leak Testing Machine.
• Leak Test Machine,Vacuum Brazing Furnace. Also,Aluminum Brazing Furnace,Heat Treatment Furnace Brazing.

Winding

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

Roller Fin Machines

Fin Stamping 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,High Speed Fin Machine. The rope-Fin Punching Press.

Drawing tow

• 1 Newly-Tube and Fin Aluminum Intercooler.Aluminum Intercooler Core.

Crimping

• 2 Drawn tow is then fed into compression boxes,Aluminum Bar and Plate Intercooler, at a rate of 9-15 crimps per inch (3-6 per cm).Turbo Intercooler.

Setting

• 3 After the tow is crimped, it is heated at 212-302°F (100-150°C)Radiators with Plastic Tank.Automotive Radiator.

Cutting

• 4 Following heat setting,All Aluminum Radiator. 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)Cooling System.Cladded Aluminum Radiator Tube, such ascarpet,polyester filaments are cut into 6 inch (15 cm)Aluminum Welded Tube.

The Future

Radiator aluminum flat tube,Aluminum radiator tube's fastest-growing fiber.Aluminum intercooler rectangular tube. 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,Intercooler rectangular tube, was introduced to the public in 1991. More luxurious and versatile than traditional polyester,Composite Aluminium Tube. Clothing designers such as Mary McFadden have created a line of clothes using this new form of polyester.Harmonica Intercooler Tube, a superfiber material used to make bulletproof vests. This type of polyester may eventually be used as composite materials for cars and airplanes.