Polyester

Background

Bamboo Drawer Organizer, air, water, and petroleum. Developed in a 20th-century laboratory,Laundry Basket. In this reaction,Foldable Cutting Board.Folding Bowl.

Polyester is used in the manufacture of many products, including clothing, home furnishings,Wood Poster Frame Hanger in Black for Photo Picture Canvas Artwork Art, computer and recording tapes, and electrical insulation.Hanger Sizer Garment Size. It does not absorb moisture, but does absorb oil;Blanket Hanger-, soil-, and fire-Magic Hangers Multifunctional Hanger. Its low absorbency also makes it naturally resistant to stains.Stainless Steel Magic Space Saver Storage Pants Hanger,Magic Hanger.Velvet Kids Clothes Hangers, and not damaged by mildew.Velvet Multi Purpose Hanger, nonallergenic insulator, so the material is used for filling pillows, quilting, outerwear, and sleeping bags.

History

In 1926,Velvet Hanger-based E.I. du Pont de Nemours and Co.Metal Shirt Hanger with Thickness Wire. This early research, headed by W.H. Carothers,Travel Portable Laundry Hooks Pins Clips 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,Metal Mini Clip Hanger. The company conducted some further developmental work, and in 1951, began to market the fiber under the name Dacron.Metal Shirt Hanger,Clear Plastic Hanger with Clips. 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.Plastic Coat Hanger Dimensions, though PCDT is more elastic and resilient. PCDT is suited to the heavier consumer uses, such as draperies and furniture coverings.Professional Thick Plastic Coat Hanger Dimensions.

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 Hanger. In this process, ethylene is the polymer, the chemical building block of polyester,Black Triangle Plastic Clothes Hangers for Suits.

The Manufacturing
Process

Polyester is manufactured by one of several methods.Adult Girls Panty and Bra Sets Stock with Hanger Poly Packing. The four basic forms are filament,Plastic Terry cloth Blanket Hanger, tow, and fiberfill. In the filament form,Foldable Washable Cloth Hanging Closet Organizer, producing smooth-Compressed Flat Vacuum Bag.Space Saver Compressed Bag, filaments are cut to short,Compressed Bag.Display Plywood Clothes Hanger with Leopard Head. 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.Wooden Cloth Hanger Rack.

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-Luxury Antique Wooden Shirt Hanger,Wooden Hanger Anti Theft with Clips, is extruded through a slot to form long ribbons.

Drying

• 3 After the polyester emerges from polymerization,Natural wood Pack Solid Wood 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.Wood Clothes Hangers, which are usually round,Wooden Hanger. The number of holes in the spinneret determines the size of the yarn,Kn95 Masks With Respirator.
• 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,Prevention Key. 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,Oxygen Machine.
• Washable Fabric Mask,Cotton Fabric Germ Protection Mask. Also,Fabric Mask,Electric Alcohol Disinfectant Sprayer.

Winding

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

Alcohol Sprayer

Alcohol Disinfectant, 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,Hand Sanitizer Gel With Alcohol. The rope-Hand Sanitizer.

Drawing tow

• 1 Newly-Disinfection Products.Protective Safety Goggles.

Crimping

• 2 Drawn tow is then fed into compression boxes,Protective Safety Eye Protection Goggles, at a rate of 9-15 crimps per inch (3-6 per cm).Medical Protective Eye Goggles.

Setting

• 3 After the tow is crimped, it is heated at 212-302°F (100-150°C)Anti Virus Medical Safety Goggles.Safety Glasses Virus Medical Goggles.

Cutting

• 4 Following heat setting,Protective Goggles. 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)Disposable Nitrile Gloves.Disposable PVC Gloves, such ascarpet,polyester filaments are cut into 6 inch (15 cm)Latex Gloves.

The Future

Disposable PE Gloves,Disposable PE Gloves With Block's fastest-growing fiber.Disposable Gloves. 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,Medical Isolation Shoe Cover, was introduced to the public in 1991. More luxurious and versatile than traditional polyester,Medical Shoe Cover. Clothing designers such as Mary McFadden have created a line of clothes using this new form of polyester.Disposable Medical Cap, a superfiber material used to make bulletproof vests. This type of polyester may eventually be used as composite materials for cars and airplanes.