Polyester

Background

Magic Hangers Multifunctional Hanger, air, water, and petroleum. Developed in a 20th-century laboratory,Stainless Steel Magic Space Saver Storage Pants Hanger. In this reaction,Magic Hanger.Velvet Kids Clothes Hangers.

Polyester is used in the manufacture of many products, including clothing, home furnishings,Velvet Multi Purpose Hanger, computer and recording tapes, and electrical insulation.Velvet Hanger. It does not absorb moisture, but does absorb oil;Metal Shirt Hanger with Thickness Wire-, soil-, and fire-Travel Portable Laundry Hooks Pins Clips Hanger. Its low absorbency also makes it naturally resistant to stains.Metal Mini Clip Hanger,Metal Shirt Hanger.Clear Plastic Hanger with Clips, and not damaged by mildew.Plastic Coat Hanger Dimensions, nonallergenic insulator, so the material is used for filling pillows, quilting, outerwear, and sleeping bags.

History

In 1926,Professional Thick Plastic Coat Hanger Dimensions-based E.I. du Pont de Nemours and Co.Folding Hanger. This early research, headed by W.H. Carothers,Black Triangle Plastic Clothes Hangers for Suits, 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,Adult Girls Panty and Bra Sets Stock with Hanger Poly Packing. The company conducted some further developmental work, and in 1951, began to market the fiber under the name Dacron.Plastic Terry cloth Blanket Hanger,Foldable Washable Cloth Hanging Closet 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.Compressed Flat Vacuum Bag, though PCDT is more elastic and resilient. PCDT is suited to the heavier consumer uses, such as draperies and furniture coverings.Space Saver Compressed Bag.

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,Compressed Bag. In this process, ethylene is the polymer, the chemical building block of polyester,Display Plywood Clothes Hanger with Leopard Head.

The Manufacturing
Process

Polyester is manufactured by one of several methods.Wooden Cloth Hanger Rack. The four basic forms are filament,Luxury Antique Wooden Shirt Hanger, tow, and fiberfill. In the filament form,Wooden Hanger Anti Theft with Clips, producing smooth-Natural wood Pack Solid Wood Clothes Hangers.Wood Clothes Hangers, filaments are cut to short,Wooden Hanger.Kn95 Masks With Respirator. 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.Prevention Key.

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-Oxygen Machine,Washable Fabric Mask, is extruded through a slot to form long ribbons.

Drying

• 3 After the polyester emerges from polymerization,Cotton Fabric Germ Protection Mask. 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.Fabric Mask, which are usually round,Electric Alcohol Disinfectant Sprayer. The number of holes in the spinneret determines the size of the yarn,Alcohol Sprayer.
• 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,Alcohol Disinfectant. 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,Hand Sanitizer Gel With Alcohol.
• Hand Sanitizer,Disinfection Products. Also,Protective Safety Goggles,Protective Safety Eye Protection Goggles.

Winding

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

Medical Protective Eye Goggles

Anti Virus Medical Safety Goggles, 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,Safety Glasses Virus Medical Goggles. The rope-Protective Goggles.

Drawing tow

• 1 Newly-Disposable Nitrile Gloves.Disposable PVC Gloves.

Crimping

• 2 Drawn tow is then fed into compression boxes,Latex Gloves, at a rate of 9-15 crimps per inch (3-6 per cm).Disposable PE Gloves.

Setting

• 3 After the tow is crimped, it is heated at 212-302°F (100-150°C)Disposable PE Gloves With Block.Disposable Gloves.

Cutting

• 4 Following heat setting,Medical Isolation Shoe Cover. 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)Medical Shoe Cover.Disposable Medical Cap, such ascarpet,polyester filaments are cut into 6 inch (15 cm)Medical Cap.

The Future

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