Polyester

Background

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

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

History

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

The Manufacturing
Process

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

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-Bamboo Drawer Organizer,Laundry Basket, is extruded through a slot to form long ribbons.

Drying

• 3 After the polyester emerges from polymerization,Foldable Cutting Board. 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.Folding Bowl, which are usually round,Wood Poster Frame Hanger in Black for Photo Picture Canvas Artwork Art. The number of holes in the spinneret determines the size of the yarn,Hanger Sizer Garment Size.
• 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,Blanket 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,Magic Hangers Multifunctional Hanger.
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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.

Velvet Hanger

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

Drawing tow

• 1 Newly-Metal Shirt Hanger.Clear Plastic Hanger with Clips.

Crimping

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

Setting

• 3 After the tow is crimped, it is heated at 212-302°F (100-150°C)Folding Hanger.Black Triangle Plastic Clothes Hangers for Suits.

Cutting

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

The Future

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