Polyester

Background

Mining Cutter Suction Dredger, air, water, and petroleum. Developed in a 20th-century laboratory,Sea Sand Dredger. In this reaction,Mini14 inch Cutter Suction Sand Dredger.18 inch Cutter Suction Dredger.

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

History

In 1926,Fully Hydraulic Cutter Head 24 Suction Dredger Barge-based E.I. du Pont de Nemours and Co.New 14 Inch Lake Dredging Equipment For Rock Dredge. This early research, headed by W.H. Carothers,Hydraulic Head 12inch River Sand Csd Dredger, 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,Small 8 Inch Cutter Dredger Ship. The company conducted some further developmental work, and in 1951, began to market the fiber under the name Dacron.Garment Processing Accessories,Bamboo Drawer Organizer. 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.Laundry Basket, though PCDT is more elastic and resilient. PCDT is suited to the heavier consumer uses, such as draperies and furniture coverings.Foldable Cutting Board.

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,Folding Bowl. In this process, ethylene is the polymer, the chemical building block of polyester,Wood Poster Frame Hanger in Black for Photo Picture Canvas Artwork Art.

The Manufacturing
Process

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

Drying

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

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 Flat Vacuum Bag

Space Saver Compressed Bag, 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,Compressed Bag. The rope-Display Plywood Clothes Hanger with Leopard Head.

Drawing tow

• 1 Newly-Wooden Cloth Hanger Rack.Luxury Antique Wooden Shirt Hanger.

Crimping

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

Setting

• 3 After the tow is crimped, it is heated at 212-302°F (100-150°C)Wood Clothes Hangers.Wooden Hanger.

Cutting

• 4 Following heat setting,Kn95 Masks With Respirator. 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)Prevention Key.Oxygen Machine, such ascarpet,polyester filaments are cut into 6 inch (15 cm)Washable Fabric Mask.

The Future

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