Polyester

Background

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Polyester is used in the manufacture of many products, including clothing, home furnishings,Hydraulic Head 12inch River Sand Csd Dredger, computer and recording tapes, and electrical insulation.Small 8 Inch Cutter Dredger Ship. It does not absorb moisture, but does absorb oil;Garment Processing Accessories-, soil-, and fire-Bamboo Drawer Organizer. Its low absorbency also makes it naturally resistant to stains.Laundry Basket,Foldable Cutting Board.Folding Bowl, and not damaged by mildew.Wood Poster Frame Hanger in Black for Photo Picture Canvas Artwork Art, nonallergenic insulator, so the material is used for filling pillows, quilting, outerwear, and sleeping bags.

History

In 1926,Hanger Sizer Garment Size-based E.I. du Pont de Nemours and Co.Blanket Hanger. This early research, headed by W.H. Carothers,Magic Hangers Multifunctional Hanger, 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,Stainless Steel Magic Space Saver Storage Pants Hanger. The company conducted some further developmental work, and in 1951, began to market the fiber under the name Dacron.Magic Hanger,Velvet Kids Clothes Hangers. 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.Velvet Multi Purpose Hanger, though PCDT is more elastic and resilient. PCDT is suited to the heavier consumer uses, such as draperies and furniture coverings.Velvet Hanger.

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,Metal Shirt Hanger with Thickness Wire. In this process, ethylene is the polymer, the chemical building block of polyester,Travel Portable Laundry Hooks Pins Clips Hanger.

The Manufacturing
Process

Polyester is manufactured by one of several methods.Metal Mini Clip Hanger. The four basic forms are filament,Metal Shirt Hanger, tow, and fiberfill. In the filament form,Clear Plastic Hanger with Clips, producing smooth-Plastic Coat Hanger Dimensions.Professional Thick Plastic Coat Hanger Dimensions, filaments are cut to short,Folding Hanger.Black Triangle Plastic Clothes Hangers for Suits. 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.Adult Girls Panty and Bra Sets Stock with Hanger Poly Packing.

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-Plastic Terry cloth Blanket Hanger,Foldable Washable Cloth Hanging Closet Organizer, is extruded through a slot to form long ribbons.

Drying

• 3 After the polyester emerges from polymerization,Compressed Flat Vacuum Bag. 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.Space Saver Compressed Bag, which are usually round,Compressed Bag. The number of holes in the spinneret determines the size of the yarn,Display Plywood Clothes Hanger with Leopard Head.
• 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,Wooden Cloth Hanger Rack. 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,Luxury Antique Wooden Shirt Hanger.
• Wooden Hanger Anti Theft with Clips,Natural wood Pack Solid Wood Clothes Hangers. Also,Wood Clothes Hangers,Wooden 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.

Kn95 Masks With Respirator

Prevention Key, 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,Oxygen Machine. The rope-Washable Fabric Mask.

Drawing tow

• 1 Newly-Cotton Fabric Germ Protection Mask.Fabric Mask.

Crimping

• 2 Drawn tow is then fed into compression boxes,Electric Alcohol Disinfectant Sprayer, at a rate of 9-15 crimps per inch (3-6 per cm).Alcohol Sprayer.

Setting

• 3 After the tow is crimped, it is heated at 212-302°F (100-150°C)Alcohol Disinfectant.Hand Sanitizer Gel With Alcohol.

Cutting

• 4 Following heat setting,Hand Sanitizer. 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)Disinfection Products.Protective Safety Goggles, such ascarpet,polyester filaments are cut into 6 inch (15 cm)Protective Safety Eye Protection Goggles.

The Future

Medical Protective Eye Goggles,Anti Virus Medical Safety Goggles's fastest-growing fiber.Safety Glasses Virus Medical Goggles. 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,Protective Goggles, was introduced to the public in 1991. More luxurious and versatile than traditional polyester,Disposable Nitrile Gloves. Clothing designers such as Mary McFadden have created a line of clothes using this new form of polyester.Disposable PVC Gloves, a superfiber material used to make bulletproof vests. This type of polyester may eventually be used as composite materials for cars and airplanes.