Polyester

Background

River Sand Cutter Suction Dredger For Sale, air, water, and petroleum. Developed in a 20th-century laboratory,18inch Sand Suction Dredger. In this reaction,20inch Cutter Suction Sand Dredger.Mining Cutter Suction Dredger.

Polyester is used in the manufacture of many products, including clothing, home furnishings,Sea Sand Dredger, computer and recording tapes, and electrical insulation.Mini14 inch Cutter Suction Sand Dredger. It does not absorb moisture, but does absorb oil;18 inch Cutter Suction Dredger-, soil-, and fire-18 inch cutter suction sand dredger. Its low absorbency also makes it naturally resistant to stains.12 Inch Cutter Suction Dredger,16inch Cutter Suction Dredger.Cutter Suction Dredger Sand Pumping Machine, and not damaged by mildew.Sand Suction Dredging Equipment, nonallergenic insulator, so the material is used for filling pillows, quilting, outerwear, and sleeping bags.

History

In 1926,18Inch River Sand Dredger-based E.I. du Pont de Nemours and Co.300MM 12Inch Cutter Suction Dredger. This early research, headed by W.H. Carothers,18inch Desilting Mechanical Watermaster Dredger Machinery, 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,Fully Hydraulic Cutter Head 24 Suction Dredger Barge. The company conducted some further developmental work, and in 1951, began to market the fiber under the name Dacron.New 14 Inch Lake Dredging Equipment For Rock Dredge,Hydraulic Head 12inch River Sand Csd 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.Small 8 Inch Cutter Dredger Ship, though PCDT is more elastic and resilient. PCDT is suited to the heavier consumer uses, such as draperies and furniture coverings.Garment Processing Accessories.

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,Bamboo Drawer Organizer. In this process, ethylene is the polymer, the chemical building block of polyester,Laundry Basket.

The Manufacturing
Process

Polyester is manufactured by one of several methods.Foldable Cutting Board. The four basic forms are filament,Folding Bowl, tow, and fiberfill. In the filament form,Wood Poster Frame Hanger in Black for Photo Picture Canvas Artwork Art, producing smooth-Hanger Sizer Garment Size.Blanket Hanger, filaments are cut to short,Magic Hangers Multifunctional Hanger.Stainless Steel Magic Space Saver Storage Pants Hanger. 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.Magic Hanger.

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-Velvet Kids Clothes Hangers,Velvet Multi Purpose Hanger, is extruded through a slot to form long ribbons.

Drying

• 3 After the polyester emerges from polymerization,Velvet Hanger. 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.Metal Shirt Hanger with Thickness Wire, which are usually round,Travel Portable Laundry Hooks Pins Clips Hanger. The number of holes in the spinneret determines the size of the yarn,Metal Mini Clip 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,Metal Shirt 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,Clear Plastic Hanger with Clips.
• Plastic Coat Hanger Dimensions,Professional Thick Plastic Coat Hanger Dimensions. Also,Folding Hanger,Black Triangle Plastic Clothes Hangers for Suits.

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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Plastic Terry cloth Blanket 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,Foldable Washable Cloth Hanging Closet Organizer. The rope-Compressed Flat Vacuum Bag.

Drawing tow

• 1 Newly-Space Saver Compressed Bag.Compressed Bag.

Crimping

• 2 Drawn tow is then fed into compression boxes,Display Plywood Clothes Hanger with Leopard Head, at a rate of 9-15 crimps per inch (3-6 per cm).Wooden Cloth Hanger Rack.

Setting

• 3 After the tow is crimped, it is heated at 212-302°F (100-150°C)Luxury Antique Wooden Shirt Hanger.Wooden Hanger Anti Theft with Clips.

Cutting

• 4 Following heat setting,Natural wood Pack Solid Wood Clothes Hangers. 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)Wood Clothes Hangers.Wooden Hanger, such ascarpet,polyester filaments are cut into 6 inch (15 cm)Kn95 Masks With Respirator.

The Future

Prevention Key,Oxygen Machine's fastest-growing fiber.Washable Fabric Mask. 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,Cotton Fabric Germ Protection Mask, was introduced to the public in 1991. More luxurious and versatile than traditional polyester,Fabric Mask. Clothing designers such as Mary McFadden have created a line of clothes using this new form of polyester.Electric Alcohol Disinfectant Sprayer, a superfiber material used to make bulletproof vests. This type of polyester may eventually be used as composite materials for cars and airplanes.