Polyester

Background

Automatic Fabric Shuttle Changing Loom, air, water, and petroleum. Developed in a 20th-century laboratory,Shuttle Loom Machine. In this reaction,Shuttle Loom Automatic Machine.Shuttle Weaving Loom.

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

History

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

The Manufacturing
Process

Polyester is manufactured by one of several methods.Disposable Medical Protective Auto Mask Machine. The four basic forms are filament,Medical Masks Making Machine, tow, and fiberfill. In the filament form,Disposable Face Medical Masks Making Machine, producing smooth-Surgical Mask Machine.Disposable Medical Protective Mask Machine, filaments are cut to short,Gauze Weaving Loom.Towel Weaving Loom. 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.LCD Video Wall.

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-Touch Screen Displays,22 Inch Touch Inquiry Displays, is extruded through a slot to form long ribbons.

Drying

• 3 After the polyester emerges from polymerization,Touch Inquiry Displays. 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.Kiosk, which are usually round,Low Power Consumption Solar TV. The number of holes in the spinneret determines the size of the yarn,24 Inch Paygo Solar 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,32 Inch Paygo Solar 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,40 Inch Paygo Solar 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.

43 Inch Fitness Mirror Display

Fitness Mirror, 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,Yacht TV. The rope-Marine TV For Sale.

Drawing tow

• 1 Newly-Marine TV.19 Inch Caravan TV.

Crimping

• 2 Drawn tow is then fed into compression boxes,24 Inch Caravan TV, at a rate of 9-15 crimps per inch (3-6 per cm).Caravan TV DVD Combo.

Setting

• 3 After the tow is crimped, it is heated at 212-302°F (100-150°C)24 Inch RV TV.Caravan TVs.

Cutting

• 4 Following heat setting,Sauna Room TV. 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)32 Inch Batroom TV Mirror.43 Inch Batroom TV Mirror, such ascarpet,polyester filaments are cut into 6 inch (15 cm)Bathroom TV Tempered Glass.

The Future

Bathroom TVs,Outdoor TV Enclosure 55 Inch's fastest-growing fiber.Outdoor TV Enclosure 65 Inch. 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 TV Enclosure, was introduced to the public in 1991. More luxurious and versatile than traditional polyester,QLED Outdoor TV 2000 Brightness. Clothing designers such as Mary McFadden have created a line of clothes using this new form of polyester.QLED Outdoor Waterproof TV 1500 brightness, a superfiber material used to make bulletproof vests. This type of polyester may eventually be used as composite materials for cars and airplanes.