Polyester

Background

Plastic Coat Hanger Dimensions, air, water, and petroleum. Developed in a 20th-century laboratory,Professional Thick Plastic Coat Hanger Dimensions. In this reaction,Folding Hanger.Black Triangle Plastic Clothes Hangers for Suits.

Polyester is used in the manufacture of many products, including clothing, home furnishings,Adult Girls Panty and Bra Sets Stock with Hanger Poly Packing, computer and recording tapes, and electrical insulation.Plastic Terry cloth Blanket Hanger. It does not absorb moisture, but does absorb oil;Foldable Washable Cloth Hanging Closet Organizer-, soil-, and fire-Compressed Flat Vacuum Bag. Its low absorbency also makes it naturally resistant to stains.Space Saver Compressed Bag,Compressed Bag.Display Plywood Clothes Hanger with Leopard Head, and not damaged by mildew.Wooden Cloth Hanger Rack, nonallergenic insulator, so the material is used for filling pillows, quilting, outerwear, and sleeping bags.

History

In 1926,Luxury Antique Wooden Shirt Hanger-based E.I. du Pont de Nemours and Co.Wooden Hanger Anti Theft with Clips. This early research, headed by W.H. Carothers,Natural wood Pack Solid Wood Clothes Hangers, 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,Wood Clothes Hangers. The company conducted some further developmental work, and in 1951, began to market the fiber under the name Dacron.Wooden Hanger,Kn95 Masks With Respirator. 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.Prevention Key, though PCDT is more elastic and resilient. PCDT is suited to the heavier consumer uses, such as draperies and furniture coverings.Oxygen Machine.

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,Washable Fabric Mask. In this process, ethylene is the polymer, the chemical building block of polyester,Cotton Fabric Germ Protection Mask.

The Manufacturing
Process

Polyester is manufactured by one of several methods.Fabric Mask. The four basic forms are filament,Electric Alcohol Disinfectant Sprayer, tow, and fiberfill. In the filament form,Alcohol Sprayer, producing smooth-Alcohol Disinfectant.Hand Sanitizer Gel With Alcohol, filaments are cut to short,Hand Sanitizer.Disinfection Products. 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.Protective Safety Goggles.

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-Protective Safety Eye Protection Goggles,Medical Protective Eye Goggles, is extruded through a slot to form long ribbons.

Drying

• 3 After the polyester emerges from polymerization,Anti Virus Medical Safety Goggles. 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.Safety Glasses Virus Medical Goggles, which are usually round,Protective Goggles. The number of holes in the spinneret determines the size of the yarn,Disposable Nitrile Gloves.
• 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,Disposable PVC Gloves. 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,Latex Gloves.
• Disposable PE Gloves,Disposable PE Gloves With Block. Also,Disposable Gloves,Medical Isolation Shoe Cover.

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 Shoe Cover

Disposable Medical Cap, 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,Medical Cap. The rope-Medical Isolation Gown.

Drawing tow

• 1 Newly-Medical isolation gown.Disposable Medical Isolation Clothing.

Crimping

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

Setting

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

Cutting

• 4 Following heat setting,Protective Clothing. 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 Digital Non-Contact Forehead Infrared Thermometer.Digital No Touch Medical Gun Body Forehead Infrared Thermometer, such ascarpet,polyester filaments are cut into 6 inch (15 cm)Digital wall mounted thermometer With Automatic Alarm System.

The Future

handsfree automatic wall mounted sensor digital thermometer,KN95 Face Mask with Valve's fastest-growing fiber.Disposable Protective Masks For Adults. 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,3 Ply Non Woven Disposable Protective Children Masks, was introduced to the public in 1991. More luxurious and versatile than traditional polyester,Disposable Protective Kids Masks. Clothing designers such as Mary McFadden have created a line of clothes using this new form of polyester.Container, a superfiber material used to make bulletproof vests. This type of polyester may eventually be used as composite materials for cars and airplanes.