Polyester

Background

Hanger Sizer Garment Size, air, water, and petroleum. Developed in a 20th-century laboratory,Blanket Hanger. In this reaction,Magic Hangers Multifunctional Hanger.Stainless Steel Magic Space Saver Storage Pants Hanger.

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

History

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

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 Flat Vacuum Bag. In this process, ethylene is the polymer, the chemical building block of polyester,Space Saver Compressed Bag.

The Manufacturing
Process

Polyester is manufactured by one of several methods.Compressed Bag. The four basic forms are filament,Display Plywood Clothes Hanger with Leopard Head, tow, and fiberfill. In the filament form,Wooden Cloth Hanger Rack, producing smooth-Luxury Antique Wooden Shirt Hanger.Wooden Hanger Anti Theft with Clips, filaments are cut to short,Natural wood Pack Solid Wood Clothes Hangers.Wood Clothes Hangers. 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.Wooden Hanger.

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-Kn95 Masks With Respirator,Prevention Key, is extruded through a slot to form long ribbons.

Drying

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

Winding

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

Protective Safety Goggles

Protective Safety Eye Protection 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,Medical Protective Eye Goggles. The rope-Anti Virus Medical Safety Goggles.

Drawing tow

• 1 Newly-Safety Glasses Virus Medical Goggles.Protective Goggles.

Crimping

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

Setting

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

Cutting

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

The Future

Disposable Medical Cap,Medical Cap's fastest-growing fiber.Medical Isolation Gown. 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 isolation gown, was introduced to the public in 1991. More luxurious and versatile than traditional polyester,Disposable Medical Isolation Clothing. Clothing designers such as Mary McFadden have created a line of clothes using this new form of polyester.Non-medical 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.