Polyester

Background

Sand Suction Dredging Equipment, air, water, and petroleum. Developed in a 20th-century laboratory,18Inch River Sand Dredger. In this reaction,300MM 12Inch Cutter Suction Dredger.18inch Desilting Mechanical Watermaster Dredger Machinery.

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

History

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

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,Velvet Multi Purpose Hanger. In this process, ethylene is the polymer, the chemical building block of polyester,Velvet Hanger.

The Manufacturing
Process

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

Drying

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

Winding

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

Wood Clothes Hangers

Wooden Hanger, 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,Kn95 Masks With Respirator. The rope-Prevention Key.

Drawing tow

• 1 Newly-Oxygen Machine.Washable Fabric Mask.

Crimping

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

Setting

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

Cutting

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

The Future

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