Polyester

Background

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

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

History

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

The Manufacturing
Process

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

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-Prevention Key,Oxygen Machine, is extruded through a slot to form long ribbons.

Drying

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

Protective Safety Eye Protection Goggles

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

Drawing tow

• 1 Newly-Protective Goggles.Disposable Nitrile Gloves.

Crimping

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

Setting

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

Cutting

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

The Future

Medical Cap,Medical Isolation Gown'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,Disposable Medical Isolation Clothing, was introduced to the public in 1991. More luxurious and versatile than traditional polyester,Non-medical Protective Clothing. 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.