Polyester

Background

Travel Portable Laundry Hooks Pins Clips Hanger, air, water, and petroleum. Developed in a 20th-century laboratory,Metal Mini Clip Hanger. In this reaction,Metal Shirt Hanger.Clear Plastic Hanger with Clips.

Polyester is used in the manufacture of many products, including clothing, home furnishings,Plastic Coat Hanger Dimensions, computer and recording tapes, and electrical insulation.Professional Thick Plastic Coat Hanger Dimensions. It does not absorb moisture, but does absorb oil;Folding Hanger-, soil-, and fire-Black Triangle Plastic Clothes Hangers for Suits. Its low absorbency also makes it naturally resistant to stains.Adult Girls Panty and Bra Sets Stock with Hanger Poly Packing,Plastic Terry cloth Blanket Hanger.Foldable Washable Cloth Hanging Closet Organizer, and not damaged by mildew.Compressed Flat Vacuum Bag, nonallergenic insulator, so the material is used for filling pillows, quilting, outerwear, and sleeping bags.

History

In 1926,Space Saver Compressed Bag-based E.I. du Pont de Nemours and Co.Compressed Bag. This early research, headed by W.H. Carothers,Display Plywood Clothes Hanger with Leopard Head, 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,Wooden Cloth Hanger Rack. The company conducted some further developmental work, and in 1951, began to market the fiber under the name Dacron.Luxury Antique Wooden Shirt Hanger,Wooden Hanger Anti Theft with Clips. 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.Natural wood Pack Solid Wood Clothes Hangers, though PCDT is more elastic and resilient. PCDT is suited to the heavier consumer uses, such as draperies and furniture coverings.Wood Clothes Hangers.

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 Hanger. In this process, ethylene is the polymer, the chemical building block of polyester,Kn95 Masks With Respirator.

The Manufacturing
Process

Polyester is manufactured by one of several methods.Prevention Key. The four basic forms are filament,Oxygen Machine, tow, and fiberfill. In the filament form,Washable Fabric Mask, producing smooth-Cotton Fabric Germ Protection Mask.Fabric Mask, filaments are cut to short,Electric Alcohol Disinfectant Sprayer.Alcohol Sprayer. 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.Alcohol Disinfectant.

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-Hand Sanitizer Gel With Alcohol,Hand Sanitizer, is extruded through a slot to form long ribbons.

Drying

• 3 After the polyester emerges from polymerization,Disinfection Products. 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.Protective Safety Goggles, which are usually round,Protective Safety Eye Protection Goggles. The number of holes in the spinneret determines the size of the yarn,Medical Protective Eye Goggles.
• 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,Anti Virus Medical Safety Goggles. 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,Safety Glasses Virus Medical Goggles.
• Protective Goggles,Disposable Nitrile Gloves. Also,Disposable PVC Gloves,Latex Gloves.

Winding

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

Disposable PE Gloves

Disposable PE Gloves With Block, 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 Gloves. The rope-Medical Isolation Shoe Cover.

Drawing tow

• 1 Newly-Medical Shoe Cover.Disposable Medical Cap.

Crimping

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

Setting

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

Cutting

• 4 Following heat setting,Non-medical Protective Clothing. 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 Protective Clothing.Medical Protective Clothing Gown, such ascarpet,polyester filaments are cut into 6 inch (15 cm)Medical Protective Clothing.

The Future

Protective Clothing,Medical Digital Non-Contact Forehead Infrared Thermometer's fastest-growing fiber.Digital No Touch Medical Gun Body Forehead Infrared Thermometer. 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,Digital wall mounted thermometer With Automatic Alarm System, was introduced to the public in 1991. More luxurious and versatile than traditional polyester,handsfree automatic wall mounted sensor digital thermometer. Clothing designers such as Mary McFadden have created a line of clothes using this new form of polyester.KN95 Face Mask with Valve, a superfiber material used to make bulletproof vests. This type of polyester may eventually be used as composite materials for cars and airplanes.