Polyester

Background

Velvet Multi Purpose Hanger, air, water, and petroleum. Developed in a 20th-century laboratory,Velvet Hanger. In this reaction,Metal Shirt Hanger with Thickness Wire.Travel Portable Laundry Hooks Pins Clips Hanger.

Polyester is used in the manufacture of many products, including clothing, home furnishings,Metal Mini Clip Hanger, computer and recording tapes, and electrical insulation.Metal Shirt Hanger. It does not absorb moisture, but does absorb oil;Clear Plastic Hanger with Clips-, soil-, and fire-Plastic Coat Hanger Dimensions. Its low absorbency also makes it naturally resistant to stains.Professional Thick Plastic Coat Hanger Dimensions,Folding Hanger.Black Triangle Plastic Clothes Hangers for Suits, and not damaged by mildew.Adult Girls Panty and Bra Sets Stock with Hanger Poly Packing, nonallergenic insulator, so the material is used for filling pillows, quilting, outerwear, and sleeping bags.

History

In 1926,Plastic Terry cloth Blanket Hanger-based E.I. du Pont de Nemours and Co.Foldable Washable Cloth Hanging Closet Organizer. This early research, headed by W.H. Carothers,Compressed Flat Vacuum Bag, 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,Space Saver Compressed Bag. The company conducted some further developmental work, and in 1951, began to market the fiber under the name Dacron.Compressed Bag,Display Plywood Clothes Hanger with Leopard Head. 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.Wooden Cloth Hanger Rack, though PCDT is more elastic and resilient. PCDT is suited to the heavier consumer uses, such as draperies and furniture coverings.Luxury Antique Wooden Shirt 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,Wooden Hanger Anti Theft with Clips. In this process, ethylene is the polymer, the chemical building block of polyester,Natural wood Pack Solid Wood Clothes Hangers.

The Manufacturing
Process

Polyester is manufactured by one of several methods.Wood Clothes Hangers. The four basic forms are filament,Wooden Hanger, tow, and fiberfill. In the filament form,Kn95 Masks With Respirator, producing smooth-Prevention Key.Oxygen Machine, filaments are cut to short,Washable Fabric Mask.Cotton Fabric Germ Protection Mask. 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.Fabric Mask.

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-Electric Alcohol Disinfectant Sprayer,Alcohol Sprayer, is extruded through a slot to form long ribbons.

Drying

• 3 After the polyester emerges from polymerization,Alcohol Disinfectant. 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.Hand Sanitizer Gel With Alcohol, which are usually round,Hand Sanitizer. The number of holes in the spinneret determines the size of the yarn,Disinfection Products.
• 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,Protective Safety Goggles. 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,Protective Safety Eye Protection Goggles.
• Medical Protective Eye Goggles,Anti Virus Medical Safety Goggles. Also,Safety Glasses Virus Medical Goggles,Protective 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.

Disposable Nitrile Gloves

Disposable PVC Gloves, 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,Latex Gloves. The rope-Disposable PE Gloves.

Drawing tow

• 1 Newly-Disposable PE Gloves With Block.Disposable Gloves.

Crimping

• 2 Drawn tow is then fed into compression boxes,Medical Isolation Shoe Cover, at a rate of 9-15 crimps per inch (3-6 per cm).Medical Shoe Cover.

Setting

• 3 After the tow is crimped, it is heated at 212-302°F (100-150°C)Disposable Medical Cap.Medical Cap.

Cutting

• 4 Following heat setting,Medical Isolation Gown. 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 isolation gown.Disposable Medical Isolation Clothing, such ascarpet,polyester filaments are cut into 6 inch (15 cm)Non-medical Protective Clothing.

The Future

Medical Protective Clothing,Medical Protective Clothing Gown's fastest-growing fiber.Medical Protective 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,Protective Clothing, was introduced to the public in 1991. More luxurious and versatile than traditional polyester,Medical Digital Non-Contact Forehead Infrared Thermometer. Clothing designers such as Mary McFadden have created a line of clothes using this new form of polyester.Digital No Touch Medical Gun Body Forehead Infrared Thermometer, a superfiber material used to make bulletproof vests. This type of polyester may eventually be used as composite materials for cars and airplanes.