Polyester

Background

Velveteen Automatic Shuttle Changing Loom, air, water, and petroleum. Developed in a 20th-century laboratory,Shuttleless Rapier Loom Machine. In this reaction,GA736 Shuttleless Rapier Loom Machine.Textile Rapier Loom.

Polyester is used in the manufacture of many products, including clothing, home furnishings,Weaving Machine Fiber Rapier Loom, computer and recording tapes, and electrical insulation.Weaving Loom. It does not absorb moisture, but does absorb oil;Rapier Loom In Weaving Machines-, soil-, and fire-GA736 Weaving Machine. Its low absorbency also makes it naturally resistant to stains.Rapier Weaving Machine,Rapier Machine.Medical Mask Machine, and not damaged by mildew.Fabric Mask Machine, nonallergenic insulator, so the material is used for filling pillows, quilting, outerwear, and sleeping bags.

History

In 1926,Nonvoven Mask Machine-based E.I. du Pont de Nemours and Co.Medical Mask Making Machine. This early research, headed by W.H. Carothers,Mask Making Machine, 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,Face Mask Maker Machine. The company conducted some further developmental work, and in 1951, began to market the fiber under the name Dacron.Face Mask Machine,Fully Automatic Disposable Non Woven Face Mask Making Machine. 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.Disposable Medical Protective Auto Mask Machine, though PCDT is more elastic and resilient. PCDT is suited to the heavier consumer uses, such as draperies and furniture coverings.Medical Masks 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,Disposable Face Medical Masks Making Machine. In this process, ethylene is the polymer, the chemical building block of polyester,Surgical Mask Machine.

The Manufacturing
Process

Polyester is manufactured by one of several methods.Disposable Medical Protective Mask Machine. The four basic forms are filament,Gauze Weaving Loom, tow, and fiberfill. In the filament form,Towel Weaving Loom, producing smooth-LCD Video Wall.Touch Screen Displays, filaments are cut to short,22 Inch Touch Inquiry Displays.Touch Inquiry Displays. 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.Kiosk.

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-Low Power Consumption Solar TV,24 Inch Paygo Solar TV, is extruded through a slot to form long ribbons.

Drying

• 3 After the polyester emerges from polymerization,32 Inch Paygo Solar TV. 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.40 Inch Paygo Solar TV, which are usually round,Paygo Solar TV. The number of holes in the spinneret determines the size of the yarn,24 Inch Solar Powered TV.
• 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,Solar Powered TV. 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,Solar TVs.
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Winding

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

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19 Inch Caravan TV, 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,24 Inch Caravan TV. The rope-Caravan TV DVD Combo.

Drawing tow

• 1 Newly-24 Inch RV TV.Caravan TVs.

Crimping

• 2 Drawn tow is then fed into compression boxes,Sauna Room TV, at a rate of 9-15 crimps per inch (3-6 per cm).32 Inch Batroom TV Mirror.

Setting

• 3 After the tow is crimped, it is heated at 212-302°F (100-150°C)43 Inch Batroom TV Mirror.Bathroom TV Tempered Glass.

Cutting

• 4 Following heat setting,Bathroom TVs. 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)Outdoor TV Enclosure 55 Inch.Outdoor TV Enclosure 65 Inch, such ascarpet,polyester filaments are cut into 6 inch (15 cm)Outdoor TV Enclosure.

The Future

QLED Outdoor TV 2000 Brightness,QLED Outdoor Waterproof TV 1500 brightness's fastest-growing fiber.Outdoor TVs Full Sun. 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,Outdoor TVs, was introduced to the public in 1991. More luxurious and versatile than traditional polyester,Skylight TPU Film PPF. Clothing designers such as Mary McFadden have created a line of clothes using this new form of polyester.Skylight Film PPF, a superfiber material used to make bulletproof vests. This type of polyester may eventually be used as composite materials for cars and airplanes.