Polyester

Background

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

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

History

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

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,Natural wood Pack Solid Wood Clothes Hangers. In this process, ethylene is the polymer, the chemical building block of polyester,Wood Clothes Hangers.

The Manufacturing
Process

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

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

Drying

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

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 PVC Gloves

Latex 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,Disposable PE Gloves. The rope-Disposable PE Gloves With Block.

Drawing tow

• 1 Newly-Disposable Gloves.Medical Isolation Shoe Cover.

Crimping

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

Setting

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

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)Disposable Medical Isolation Clothing.Non-medical Protective Clothing, such ascarpet,polyester filaments are cut into 6 inch (15 cm)Medical Protective Clothing.

The Future

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