Polyester

Background

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

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

History

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

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,Luxury Antique Wooden Shirt Hanger. In this process, ethylene is the polymer, the chemical building block of polyester,Wooden Hanger Anti Theft with Clips.

The Manufacturing
Process

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

Drying

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

Protective Goggles

Disposable Nitrile 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 PVC Gloves. The rope-Latex Gloves.

Drawing tow

• 1 Newly-Disposable PE Gloves.Disposable PE Gloves With Block.

Crimping

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

Setting

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

Cutting

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

The Future

Non-medical Protective Clothing,Medical Protective Clothing's fastest-growing fiber.Medical Protective Clothing 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 Protective Clothing, was introduced to the public in 1991. More luxurious and versatile than traditional polyester,Protective Clothing. Clothing designers such as Mary McFadden have created a line of clothes using this new form of polyester.Medical Digital Non-Contact Forehead Infrared Thermometer, a superfiber material used to make bulletproof vests. This type of polyester may eventually be used as composite materials for cars and airplanes.