Polyester

Background

16inch Cutter Suction Dredger, air, water, and petroleum. Developed in a 20th-century laboratory,Cutter Suction Dredger Sand Pumping Machine. In this reaction,Sand Suction Dredging Equipment.18Inch River Sand Dredger.

Polyester is used in the manufacture of many products, including clothing, home furnishings,300MM 12Inch Cutter Suction Dredger, computer and recording tapes, and electrical insulation.18inch Desilting Mechanical Watermaster Dredger Machinery. It does not absorb moisture, but does absorb oil;Fully Hydraulic Cutter Head 24 Suction Dredger Barge-, soil-, and fire-New 14 Inch Lake Dredging Equipment For Rock Dredge. Its low absorbency also makes it naturally resistant to stains.Hydraulic Head 12inch River Sand Csd Dredger,Small 8 Inch Cutter Dredger Ship.Garment Processing Accessories, and not damaged by mildew.Bamboo Drawer Organizer, nonallergenic insulator, so the material is used for filling pillows, quilting, outerwear, and sleeping bags.

History

In 1926,Laundry Basket-based E.I. du Pont de Nemours and Co.Foldable Cutting Board. This early research, headed by W.H. Carothers,Folding Bowl, 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,Wood Poster Frame Hanger in Black for Photo Picture Canvas Artwork Art. The company conducted some further developmental work, and in 1951, began to market the fiber under the name Dacron.Hanger Sizer Garment Size,Blanket Hanger. 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.Magic Hangers Multifunctional Hanger, though PCDT is more elastic and resilient. PCDT is suited to the heavier consumer uses, such as draperies and furniture coverings.Stainless Steel Magic Space Saver Storage Pants 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,Magic Hanger. In this process, ethylene is the polymer, the chemical building block of polyester,Velvet Kids Clothes Hangers.

The Manufacturing
Process

Polyester is manufactured by one of several methods.Velvet Multi Purpose Hanger. The four basic forms are filament,Velvet Hanger, tow, and fiberfill. In the filament form,Metal Shirt Hanger with Thickness Wire, producing smooth-Travel Portable Laundry Hooks Pins Clips Hanger.Metal Mini Clip Hanger, filaments are cut to short,Metal Shirt Hanger.Clear Plastic Hanger with Clips. 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.Plastic Coat Hanger Dimensions.

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-Professional Thick Plastic Coat Hanger Dimensions,Folding Hanger, is extruded through a slot to form long ribbons.

Drying

• 3 After the polyester emerges from polymerization,Black Triangle Plastic Clothes Hangers for Suits. 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.Adult Girls Panty and Bra Sets Stock with Hanger Poly Packing, which are usually round,Plastic Terry cloth Blanket Hanger. The number of holes in the spinneret determines the size of the yarn,Foldable Washable Cloth Hanging Closet Organizer.
• 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,Compressed Flat Vacuum Bag. 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,Space Saver Compressed Bag.
• Compressed Bag,Display Plywood Clothes Hanger with Leopard Head. Also,Wooden Cloth Hanger Rack,Luxury Antique Wooden Shirt 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.

Wooden Hanger Anti Theft with Clips

Natural wood Pack Solid Wood Clothes Hangers, 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,Wood Clothes Hangers. The rope-Wooden Hanger.

Drawing tow

• 1 Newly-Kn95 Masks With Respirator.Prevention Key.

Crimping

• 2 Drawn tow is then fed into compression boxes,Oxygen Machine, at a rate of 9-15 crimps per inch (3-6 per cm).Washable Fabric Mask.

Setting

• 3 After the tow is crimped, it is heated at 212-302°F (100-150°C)Cotton Fabric Germ Protection Mask.Fabric Mask.

Cutting

• 4 Following heat setting,Electric Alcohol Disinfectant Sprayer. 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)Alcohol Sprayer.Alcohol Disinfectant, such ascarpet,polyester filaments are cut into 6 inch (15 cm)Hand Sanitizer Gel With Alcohol.

The Future

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