Polyester

Background

Pure Catalase Powder Enzyme, air, water, and petroleum. Developed in a 20th-century laboratory,Lactase. In this reaction,Flexible Rubber Hose For Dredge Discharging.Mini Portable Sand Suction Dredger.

Polyester is used in the manufacture of many products, including clothing, home furnishings,Sea Sand Lifting Hydraulic Jet Suction Dredger, computer and recording tapes, and electrical insulation.18inch Cutter Suction Dredger. It does not absorb moisture, but does absorb oil;24inch Cutter Suction Dredger-, soil-, and fire-River Sand Cutter Suction Dredger For Sale. Its low absorbency also makes it naturally resistant to stains.18inch Sand Suction Dredger,20inch Cutter Suction Sand Dredger.Mining Cutter Suction Dredger, and not damaged by mildew.Sea Sand Dredger, nonallergenic insulator, so the material is used for filling pillows, quilting, outerwear, and sleeping bags.

History

In 1926,Mini14 inch Cutter Suction Sand Dredger-based E.I. du Pont de Nemours and Co.18 inch Cutter Suction Dredger. This early research, headed by W.H. Carothers,18 inch cutter suction sand dredger, 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 1946,12 Inch Cutter Suction Dredger. The company conducted some further developmental work, and in 1951, began to market the fiber under the name Dacron.16inch Cutter Suction Dredger,Cutter Suction Dredger Sand Pumping 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.Sand Suction Dredging Equipment, though PCDT is more elastic and resilient. PCDT is suited to the heavier consumer uses, such as draperies and furniture coverings.18Inch River Sand Dredger.

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,300MM 12Inch Cutter Suction Dredger. In this process, ethylene is the polymer, the chemical building block of polyester,18inch Desilting Mechanical Watermaster Dredger Machinery.

The Manufacturing
Process

Polyester is manufactured by one of several methods.Fully Hydraulic Cutter Head 24 Suction Dredger Barge. The four basic forms are filament,New 14 Inch Lake Dredging Equipment For Rock Dredge, tow, and fiberfill. In the filament form,Hydraulic Head 12inch River Sand Csd Dredger, producing smooth-Small 8 Inch Cutter Dredger Ship.Garment Processing Accessories, filaments are cut to short,Bamboo Drawer Organizer.Laundry Basket. 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.Foldable Cutting Board.

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-Folding Bowl,Wood Poster Frame Hanger in Black for Photo Picture Canvas Artwork Art, is extruded through a slot to form long ribbons.

Drying

• 3 After the polyester emerges from polymerization,Hanger Sizer Garment Size. 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.Blanket Hanger, which are usually round,Magic Hangers Multifunctional Hanger. The number of holes in the spinneret determines the size of the yarn,Stainless Steel Magic Space Saver Storage Pants Hanger.
• 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,Magic Hanger. 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,Velvet Kids Clothes Hangers.
• Velvet Multi Purpose Hanger,Velvet Hanger. Also,Metal Shirt Hanger with Thickness Wire,Travel Portable Laundry Hooks Pins Clips Hanger.

Winding

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

Metal Mini Clip Hanger

Metal Shirt Hanger, 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,Clear Plastic Hanger with Clips. The rope-Plastic Coat Hanger Dimensions.

Drawing tow

• 1 Newly-Professional Thick Plastic Coat Hanger Dimensions.Folding Hanger.

Crimping

• 2 Drawn tow is then fed into compression boxes,Black Triangle Plastic Clothes Hangers for Suits, at a rate of 9-15 crimps per inch (3-6 per cm).Adult Girls Panty and Bra Sets Stock with Hanger Poly Packing.

Setting

• 3 After the tow is crimped, it is heated at 212-302°F (100-150°C)Plastic Terry cloth Blanket Hanger.Foldable Washable Cloth Hanging Closet Organizer.

Cutting

• 4 Following heat setting,Compressed Flat Vacuum Bag. 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)Space Saver Compressed Bag.Compressed Bag, such ascarpet,polyester filaments are cut into 6 inch (15 cm)Display Plywood Clothes Hanger with Leopard Head.

The Future

Wooden Cloth Hanger Rack,Luxury Antique Wooden Shirt Hanger's fastest-growing fiber.Wooden Hanger Anti Theft with Clips. 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,Natural wood Pack Solid Wood Clothes Hangers, was introduced to the public in 1991. More luxurious and versatile than traditional polyester,Wood Clothes Hangers. Clothing designers such as Mary McFadden have created a line of clothes using this new form of polyester.Wooden Hanger, a superfiber material used to make bulletproof vests. This type of polyester may eventually be used as composite materials for cars and airplanes.