Polyester

Background

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

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

History

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

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

The Manufacturing
Process

Polyester is manufactured by one of several methods.Blanket Hanger. The four basic forms are filament,Magic Hangers Multifunctional Hanger, tow, and fiberfill. In the filament form,Stainless Steel Magic Space Saver Storage Pants Hanger, producing smooth-Magic Hanger.Velvet Kids Clothes Hangers, filaments are cut to short,Velvet Multi Purpose Hanger.Velvet 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.Metal Shirt Hanger with Thickness Wire.

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-Travel Portable Laundry Hooks Pins Clips Hanger,Metal Mini Clip Hanger, is extruded through a slot to form long ribbons.

Drying

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

Space Saver Compressed Bag

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

Drawing tow

• 1 Newly-Luxury Antique Wooden Shirt Hanger.Wooden Hanger Anti Theft with Clips.

Crimping

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

Setting

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

Cutting

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

The Future

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