Polyester

Background

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

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

History

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

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,Display Plywood Clothes Hanger with Leopard Head. In this process, ethylene is the polymer, the chemical building block of polyester,Wooden Cloth Hanger Rack.

The Manufacturing
Process

Polyester is manufactured by one of several methods.Luxury Antique Wooden Shirt Hanger. The four basic forms are filament,Wooden Hanger Anti Theft with Clips, tow, and fiberfill. In the filament form,Natural wood Pack Solid Wood Clothes Hangers, producing smooth-Wood Clothes Hangers.Wooden Hanger, filaments are cut to short,Kn95 Masks With Respirator.Prevention Key. 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.Oxygen Machine.

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-Washable Fabric Mask,Cotton Fabric Germ Protection Mask, is extruded through a slot to form long ribbons.

Drying

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

Anti Virus Medical Safety Goggles

Safety Glasses Virus Medical 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,Protective Goggles. The rope-Disposable Nitrile Gloves.

Drawing tow

• 1 Newly-Disposable PVC Gloves.Latex Gloves.

Crimping

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

Setting

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

Cutting

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

The Future

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