Polyester

Background

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

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

History

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

The Manufacturing
Process

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

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

Drying

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

Winding

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

Luxury Antique Wooden Shirt Hanger

Wooden Hanger Anti Theft with Clips, 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,Natural wood Pack Solid Wood Clothes Hangers. The rope-Wood Clothes Hangers.

Drawing tow

• 1 Newly-Wooden Hanger.Kn95 Masks With Respirator.

Crimping

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

Setting

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

Cutting

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

The Future

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