Polyester

Background

Mini14 inch Cutter Suction Sand Dredger, air, water, and petroleum. Developed in a 20th-century laboratory,18 inch Cutter Suction Dredger. In this reaction,18 inch cutter suction sand dredger.12 Inch Cutter Suction Dredger.

Polyester is used in the manufacture of many products, including clothing, home furnishings,16inch Cutter Suction Dredger, computer and recording tapes, and electrical insulation.Cutter Suction Dredger Sand Pumping Machine. It does not absorb moisture, but does absorb oil;Sand Suction Dredging Equipment-, soil-, and fire-18Inch River Sand Dredger. Its low absorbency also makes it naturally resistant to stains.300MM 12Inch Cutter Suction Dredger,18inch Desilting Mechanical Watermaster Dredger Machinery.Fully Hydraulic Cutter Head 24 Suction Dredger Barge, and not damaged by mildew.New 14 Inch Lake Dredging Equipment For Rock Dredge, nonallergenic insulator, so the material is used for filling pillows, quilting, outerwear, and sleeping bags.

History

In 1926,Hydraulic Head 12inch River Sand Csd Dredger-based E.I. du Pont de Nemours and Co.Small 8 Inch Cutter Dredger Ship. This early research, headed by W.H. Carothers,Garment Processing Accessories, 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,Bamboo Drawer Organizer. The company conducted some further developmental work, and in 1951, began to market the fiber under the name Dacron.Laundry Basket,Foldable Cutting Board. 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.Folding Bowl, though PCDT is more elastic and resilient. PCDT is suited to the heavier consumer uses, such as draperies and furniture coverings.Wood Poster Frame Hanger in Black for Photo Picture Canvas Artwork Art.

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,Hanger Sizer Garment Size. In this process, ethylene is the polymer, the chemical building block of polyester,Blanket Hanger.

The Manufacturing
Process

Polyester is manufactured by one of several methods.Magic Hangers Multifunctional Hanger. The four basic forms are filament,Stainless Steel Magic Space Saver Storage Pants Hanger, tow, and fiberfill. In the filament form,Magic Hanger, producing smooth-Velvet Kids Clothes Hangers.Velvet Multi Purpose Hanger, filaments are cut to short,Velvet Hanger.Metal Shirt Hanger with Thickness Wire. 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.Travel Portable Laundry Hooks Pins Clips 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-Metal Mini Clip Hanger,Metal Shirt Hanger, is extruded through a slot to form long ribbons.

Drying

• 3 After the polyester emerges from polymerization,Clear Plastic Hanger with Clips. 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.Plastic Coat Hanger Dimensions, which are usually round,Professional Thick Plastic Coat Hanger Dimensions. The number of holes in the spinneret determines the size of the yarn,Folding 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,Black Triangle Plastic Clothes Hangers for Suits. 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,Adult Girls Panty and Bra Sets Stock with Hanger Poly Packing.
• Plastic Terry cloth Blanket Hanger,Foldable Washable Cloth Hanging Closet Organizer. Also,Compressed Flat Vacuum Bag,Space Saver Compressed Bag.

Winding

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

Compressed Bag

Display Plywood Clothes Hanger with Leopard Head, 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,Wooden Cloth Hanger Rack. The rope-Luxury Antique Wooden Shirt Hanger.

Drawing tow

• 1 Newly-Wooden Hanger Anti Theft with Clips.Natural wood Pack Solid Wood Clothes Hangers.

Crimping

• 2 Drawn tow is then fed into compression boxes,Wood Clothes Hangers, at a rate of 9-15 crimps per inch (3-6 per cm).Wooden Hanger.

Setting

• 3 After the tow is crimped, it is heated at 212-302°F (100-150°C)Kn95 Masks With Respirator.Prevention Key.

Cutting

• 4 Following heat setting,Oxygen Machine. 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)Washable Fabric Mask.Cotton Fabric Germ Protection Mask, such ascarpet,polyester filaments are cut into 6 inch (15 cm)Fabric Mask.

The Future

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