Polyester

Background

Professional Thick Plastic Coat Hanger Dimensions, air, water, and petroleum. Developed in a 20th-century laboratory,Folding Hanger. In this reaction,Black Triangle Plastic Clothes Hangers for Suits.Adult Girls Panty and Bra Sets Stock with Hanger Poly Packing.

Polyester is used in the manufacture of many products, including clothing, home furnishings,Plastic Terry cloth Blanket Hanger, computer and recording tapes, and electrical insulation.Foldable Washable Cloth Hanging Closet Organizer. It does not absorb moisture, but does absorb oil;Compressed Flat Vacuum Bag-, soil-, and fire-Space Saver Compressed Bag. Its low absorbency also makes it naturally resistant to stains.Compressed Bag,Display Plywood Clothes Hanger with Leopard Head.Wooden Cloth Hanger Rack, and not damaged by mildew.Luxury Antique Wooden Shirt Hanger, nonallergenic insulator, so the material is used for filling pillows, quilting, outerwear, and sleeping bags.

History

In 1926,Wooden Hanger Anti Theft with Clips-based E.I. du Pont de Nemours and Co.Natural wood Pack Solid Wood Clothes Hangers. This early research, headed by W.H. Carothers,Wood Clothes Hangers, 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 Hanger. The company conducted some further developmental work, and in 1951, began to market the fiber under the name Dacron.Kn95 Masks With Respirator,Prevention Key. 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.Oxygen Machine, though PCDT is more elastic and resilient. PCDT is suited to the heavier consumer uses, such as draperies and furniture coverings.Washable Fabric Mask.

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,Cotton Fabric Germ Protection Mask. In this process, ethylene is the polymer, the chemical building block of polyester,Fabric Mask.

The Manufacturing
Process

Polyester is manufactured by one of several methods.Electric Alcohol Disinfectant Sprayer. The four basic forms are filament,Alcohol Sprayer, tow, and fiberfill. In the filament form,Alcohol Disinfectant, producing smooth-Hand Sanitizer Gel With Alcohol.Hand Sanitizer, filaments are cut to short,Disinfection Products.Protective Safety Goggles. 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.Protective Safety Eye Protection Goggles.

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-Medical Protective Eye Goggles,Anti Virus Medical Safety Goggles, is extruded through a slot to form long ribbons.

Drying

• 3 After the polyester emerges from polymerization,Safety Glasses Virus Medical Goggles. 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 Goggles, which are usually round,Disposable Nitrile Gloves. The number of holes in the spinneret determines the size of the yarn,Disposable PVC Gloves.
• 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,Latex Gloves. 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,Disposable PE Gloves.
• Disposable PE Gloves With Block,Disposable Gloves. Also,Medical Isolation Shoe Cover,Medical Shoe Cover.

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 Medical Cap

Medical Cap, 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 Isolation Gown. The rope-Medical isolation gown.

Drawing tow

• 1 Newly-Disposable Medical Isolation Clothing.Non-medical Protective Clothing.

Crimping

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

Setting

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

Cutting

• 4 Following heat setting,Medical Digital Non-Contact Forehead Infrared Thermometer. 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)Digital No Touch Medical Gun Body Forehead Infrared Thermometer.Digital wall mounted thermometer With Automatic Alarm System, such ascarpet,polyester filaments are cut into 6 inch (15 cm)handsfree automatic wall mounted sensor digital thermometer.

The Future

KN95 Face Mask with Valve,Disposable Protective Masks For Adults's fastest-growing fiber.3 Ply Non Woven Disposable Protective Children Masks. 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 Protective Kids Masks, was introduced to the public in 1991. More luxurious and versatile than traditional polyester,Container. Clothing designers such as Mary McFadden have created a line of clothes using this new form of polyester.Double Inclined Cradle, a superfiber material used to make bulletproof vests. This type of polyester may eventually be used as composite materials for cars and airplanes.