Polyester

Background

Kombucha, air, water, and petroleum. Developed in a 20th-century laboratory,Kombucha Powder. In this reaction,Bromelain.Papain.

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

History

In 1926,18inch Sand Suction Dredger-based E.I. du Pont de Nemours and Co.20inch Cutter Suction Sand Dredger. This early research, headed by W.H. Carothers,Mining Cutter Suction 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,Sea Sand Dredger. The company conducted some further developmental work, and in 1951, began to market the fiber under the name Dacron.Mini14 inch Cutter Suction Sand Dredger,18 inch Cutter Suction Dredger. 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.18 inch cutter suction sand dredger, though PCDT is more elastic and resilient. PCDT is suited to the heavier consumer uses, such as draperies and furniture coverings.12 Inch Cutter Suction 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,16inch Cutter Suction Dredger. In this process, ethylene is the polymer, the chemical building block of polyester,Cutter Suction Dredger Sand Pumping Machine.

The Manufacturing
Process

Polyester is manufactured by one of several methods.Sand Suction Dredging Equipment. The four basic forms are filament,18Inch River Sand Dredger, tow, and fiberfill. In the filament form,300MM 12Inch Cutter Suction Dredger, producing smooth-18inch Desilting Mechanical Watermaster Dredger Machinery.Fully Hydraulic Cutter Head 24 Suction Dredger Barge, filaments are cut to short,New 14 Inch Lake Dredging Equipment For Rock Dredge.Hydraulic Head 12inch River Sand Csd Dredger. 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.Small 8 Inch Cutter Dredger Ship.

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-Garment Processing Accessories,Bamboo Drawer Organizer, is extruded through a slot to form long ribbons.

Drying

• 3 After the polyester emerges from polymerization,Laundry Basket. 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.Foldable Cutting Board, which are usually round,Folding Bowl. The number of holes in the spinneret determines the size of the yarn,Wood Poster Frame Hanger in Black for Photo Picture Canvas Artwork Art.
• 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,Hanger Sizer Garment Size. 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,Blanket Hanger.
• Magic Hangers Multifunctional Hanger,Stainless Steel Magic Space Saver Storage Pants Hanger. Also,Magic Hanger,Velvet Kids Clothes Hangers.

Winding

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

Velvet Multi Purpose Hanger

Velvet 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,Metal Shirt Hanger with Thickness Wire. The rope-Travel Portable Laundry Hooks Pins Clips Hanger.

Drawing tow

• 1 Newly-Metal Mini Clip Hanger.Metal Shirt Hanger.

Crimping

• 2 Drawn tow is then fed into compression boxes,Clear Plastic Hanger with Clips, at a rate of 9-15 crimps per inch (3-6 per cm).Plastic Coat Hanger Dimensions.

Setting

• 3 After the tow is crimped, it is heated at 212-302°F (100-150°C)Professional Thick Plastic Coat Hanger Dimensions.Folding Hanger.

Cutting

• 4 Following heat setting,Black Triangle Plastic Clothes Hangers for Suits. 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)Adult Girls Panty and Bra Sets Stock with Hanger Poly Packing.Plastic Terry cloth Blanket Hanger, such ascarpet,polyester filaments are cut into 6 inch (15 cm)Foldable Washable Cloth Hanging Closet Organizer.

The Future

Compressed Flat Vacuum Bag,Space Saver Compressed Bag's fastest-growing fiber.Compressed Bag. 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,Display Plywood Clothes Hanger with Leopard Head, was introduced to the public in 1991. More luxurious and versatile than traditional polyester,Wooden Cloth Hanger Rack. Clothing designers such as Mary McFadden have created a line of clothes using this new form of polyester.Luxury Antique Wooden Shirt Hanger, a superfiber material used to make bulletproof vests. This type of polyester may eventually be used as composite materials for cars and airplanes.