Polyester

Background

18inch Cutter Suction Dredger, air, water, and petroleum. Developed in a 20th-century laboratory,24inch Cutter Suction Dredger. In this reaction,River Sand Cutter Suction Dredger For Sale.18inch Sand Suction Dredger.

Polyester is used in the manufacture of many products, including clothing, home furnishings,20inch Cutter Suction Sand Dredger, computer and recording tapes, and electrical insulation.Mining Cutter Suction Dredger. It does not absorb moisture, but does absorb oil;Sea Sand Dredger-, soil-, and fire-Mini14 inch Cutter Suction Sand Dredger. Its low absorbency also makes it naturally resistant to stains.18 inch Cutter Suction Dredger,18 inch cutter suction sand dredger.12 Inch Cutter Suction Dredger, and not damaged by mildew.16inch Cutter Suction Dredger, nonallergenic insulator, so the material is used for filling pillows, quilting, outerwear, and sleeping bags.

History

In 1926,Cutter Suction Dredger Sand Pumping Machine-based E.I. du Pont de Nemours and Co.Sand Suction Dredging Equipment. This early research, headed by W.H. Carothers,18Inch River Sand 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 1946,300MM 12Inch Cutter Suction Dredger. The company conducted some further developmental work, and in 1951, began to market the fiber under the name Dacron.18inch Desilting Mechanical Watermaster Dredger Machinery,Fully Hydraulic Cutter Head 24 Suction Dredger Barge. 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.New 14 Inch Lake Dredging Equipment For Rock Dredge, though PCDT is more elastic and resilient. PCDT is suited to the heavier consumer uses, such as draperies and furniture coverings.Hydraulic Head 12inch River Sand Csd Dredger.

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,Small 8 Inch Cutter Dredger Ship. In this process, ethylene is the polymer, the chemical building block of polyester,Garment Processing Accessories.

The Manufacturing
Process

Polyester is manufactured by one of several methods.Bamboo Drawer Organizer. The four basic forms are filament,Laundry Basket, tow, and fiberfill. In the filament form,Foldable Cutting Board, producing smooth-Folding Bowl.Wood Poster Frame Hanger in Black for Photo Picture Canvas Artwork Art, filaments are cut to short,Hanger Sizer Garment Size.Blanket 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.Magic Hangers Multifunctional 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-Stainless Steel Magic Space Saver Storage Pants Hanger,Magic Hanger, is extruded through a slot to form long ribbons.

Drying

• 3 After the polyester emerges from polymerization,Velvet Kids Clothes Hangers. 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.Velvet Multi Purpose Hanger, which are usually round,Velvet Hanger. The number of holes in the spinneret determines the size of the yarn,Metal Shirt Hanger with Thickness Wire.
• 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,Travel Portable Laundry Hooks Pins Clips 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,Metal Mini Clip Hanger.
• Metal Shirt Hanger,Clear Plastic Hanger with Clips. Also,Plastic Coat Hanger Dimensions,Professional Thick Plastic Coat Hanger Dimensions.

Winding

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

Folding Hanger

Black Triangle Plastic Clothes Hangers for Suits, 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,Adult Girls Panty and Bra Sets Stock with Hanger Poly Packing. The rope-Plastic Terry cloth Blanket Hanger.

Drawing tow

• 1 Newly-Foldable Washable Cloth Hanging Closet Organizer.Compressed Flat Vacuum Bag.

Crimping

• 2 Drawn tow is then fed into compression boxes,Space Saver Compressed Bag, at a rate of 9-15 crimps per inch (3-6 per cm).Compressed Bag.

Setting

• 3 After the tow is crimped, it is heated at 212-302°F (100-150°C)Display Plywood Clothes Hanger with Leopard Head.Wooden Cloth Hanger Rack.

Cutting

• 4 Following heat setting,Luxury Antique Wooden Shirt Hanger. 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)Wooden Hanger Anti Theft with Clips.Natural wood Pack Solid Wood Clothes Hangers, such ascarpet,polyester filaments are cut into 6 inch (15 cm)Wood Clothes Hangers.

The Future

Wooden Hanger,Kn95 Masks With Respirator's fastest-growing fiber.Prevention Key. 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,Oxygen Machine, was introduced to the public in 1991. More luxurious and versatile than traditional polyester,Washable Fabric Mask. Clothing designers such as Mary McFadden have created a line of clothes using this new form of polyester.Cotton Fabric Germ Protection Mask, a superfiber material used to make bulletproof vests. This type of polyester may eventually be used as composite materials for cars and airplanes.