Polyester

Background

Magic Hanger, air, water, and petroleum. Developed in a 20th-century laboratory,Velvet Kids Clothes Hangers. In this reaction,Velvet Multi Purpose Hanger.Velvet Hanger.

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

History

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

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 Cloth Hanger Rack. In this process, ethylene is the polymer, the chemical building block of polyester,Luxury Antique Wooden Shirt Hanger.

The Manufacturing
Process

Polyester is manufactured by one of several methods.Wooden Hanger Anti Theft with Clips. The four basic forms are filament,Natural wood Pack Solid Wood Clothes Hangers, tow, and fiberfill. In the filament form,Wood Clothes Hangers, producing smooth-Wooden Hanger.Kn95 Masks With Respirator, filaments are cut to short,Prevention Key.Oxygen Machine. 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.Washable 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-Cotton Fabric Germ Protection Mask,Fabric Mask, is extruded through a slot to form long ribbons.

Drying

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

Safety Glasses Virus Medical Goggles

Protective 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,Disposable Nitrile Gloves. The rope-Disposable PVC Gloves.

Drawing tow

• 1 Newly-Latex Gloves.Disposable PE Gloves.

Crimping

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

Setting

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

Cutting

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

The Future

Disposable Medical Isolation Clothing,Non-medical Protective Clothing'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,Medical Protective Clothing Gown, 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.Protective Clothing, a superfiber material used to make bulletproof vests. This type of polyester may eventually be used as composite materials for cars and airplanes.