Polyester

Background

Shuttleless Rapier Loom Machine, air, water, and petroleum. Developed in a 20th-century laboratory,GA736 Shuttleless Rapier Loom Machine. In this reaction,Textile Rapier Loom.Weaving Machine Fiber Rapier Loom.

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

History

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

The Manufacturing
Process

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

Drying

• 3 After the polyester emerges from polymerization,40 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.Paygo Solar TV, which are usually round,24 Inch Solar Powered TV. The number of holes in the spinneret determines the size of the yarn,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 TVs. 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,43 Inch Fitness Mirror Display.
• Fitness Mirror,Yacht TV. Also,Marine TV For Sale,Marine TV.

Winding

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

19 Inch Caravan TV

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

Drawing tow

• 1 Newly-Caravan TVs.Sauna Room TV.

Crimping

• 2 Drawn tow is then fed into compression boxes,32 Inch Batroom TV Mirror, at a rate of 9-15 crimps per inch (3-6 per cm).43 Inch Batroom TV Mirror.

Setting

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

Cutting

• 4 Following heat setting,Outdoor TV Enclosure 55 Inch. 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 65 Inch.Outdoor TV Enclosure, such ascarpet,polyester filaments are cut into 6 inch (15 cm)QLED Outdoor TV 2000 Brightness.

The Future

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