Polyester

Background

Textile Rapier Loom, air, water, and petroleum. Developed in a 20th-century laboratory,Weaving Machine Fiber Rapier Loom. In this reaction,Weaving Loom.Rapier Loom In Weaving Machines.

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

History

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

The Manufacturing
Process

Polyester is manufactured by one of several methods.LCD Video Wall. The four basic forms are filament,Touch Screen Displays, tow, and fiberfill. In the filament form,22 Inch Touch Inquiry Displays, producing smooth-Touch Inquiry Displays.Kiosk, filaments are cut to short,Low Power Consumption Solar TV.24 Inch Paygo Solar TV. 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.32 Inch Paygo Solar TV.

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-40 Inch Paygo Solar TV,Paygo Solar TV, is extruded through a slot to form long ribbons.

Drying

• 3 After the polyester emerges from polymerization,24 Inch Solar Powered 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.Solar Powered TV, which are usually round,Solar TVs. The number of holes in the spinneret determines the size of the yarn,43 Inch Fitness Mirror Display.
• 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,Fitness Mirror. 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,Yacht TV.
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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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24 Inch RV 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,Caravan TVs. The rope-Sauna Room TV.

Drawing tow

• 1 Newly-32 Inch Batroom TV Mirror.43 Inch Batroom TV Mirror.

Crimping

• 2 Drawn tow is then fed into compression boxes,Bathroom TV Tempered Glass, at a rate of 9-15 crimps per inch (3-6 per cm).Bathroom TVs.

Setting

• 3 After the tow is crimped, it is heated at 212-302°F (100-150°C)Outdoor TV Enclosure 55 Inch.Outdoor TV Enclosure 65 Inch.

Cutting

• 4 Following heat setting,Outdoor TV Enclosure. 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)QLED Outdoor TV 2000 Brightness.QLED Outdoor Waterproof TV 1500 brightness, such ascarpet,polyester filaments are cut into 6 inch (15 cm)Outdoor TVs Full Sun.

The Future

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