Polyester

Background

18Inch River Sand Dredger, air, water, and petroleum. Developed in a 20th-century laboratory,300MM 12Inch Cutter Suction Dredger. In this reaction,18inch Desilting Mechanical Watermaster Dredger Machinery.Fully Hydraulic Cutter Head 24 Suction Dredger Barge.

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

History

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

The Manufacturing
Process

Polyester is manufactured by one of several methods.Travel Portable Laundry Hooks Pins Clips Hanger. The four basic forms are filament,Metal Mini Clip Hanger, tow, and fiberfill. In the filament form,Metal Shirt Hanger, producing smooth-Clear Plastic Hanger with Clips.Plastic Coat Hanger Dimensions, filaments are cut to short,Professional Thick Plastic Coat Hanger Dimensions.Folding 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.Black Triangle Plastic Clothes Hangers for Suits.

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-Adult Girls Panty and Bra Sets Stock with Hanger Poly Packing,Plastic Terry cloth Blanket Hanger, is extruded through a slot to form long ribbons.

Drying

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

Wooden Hanger

Kn95 Masks With Respirator, 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,Prevention Key. The rope-Oxygen Machine.

Drawing tow

• 1 Newly-Washable Fabric Mask.Cotton Fabric Germ Protection Mask.

Crimping

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

Setting

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

Cutting

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

The Future

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