Polyester

Background

Metal Shirt Hanger, air, water, and petroleum. Developed in a 20th-century laboratory,Clear Plastic Hanger with Clips. In this reaction,Plastic Coat Hanger Dimensions.Professional Thick Plastic Coat Hanger Dimensions.

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

History

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

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,Prevention Key. In this process, ethylene is the polymer, the chemical building block of polyester,Oxygen Machine.

The Manufacturing
Process

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

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-Disinfection Products,Protective Safety Goggles, is extruded through a slot to form long ribbons.

Drying

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

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 Gloves

Medical Isolation Shoe Cover, 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 Shoe Cover. The rope-Disposable Medical Cap.

Drawing tow

• 1 Newly-Medical Cap.Medical Isolation Gown.

Crimping

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

Setting

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

Cutting

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

The Future

Digital No Touch Medical Gun Body Forehead Infrared Thermometer,Digital wall mounted thermometer With Automatic Alarm System's fastest-growing fiber.handsfree automatic wall mounted sensor digital 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,KN95 Face Mask with Valve, was introduced to the public in 1991. More luxurious and versatile than traditional polyester,Disposable Protective Masks For Adults. Clothing designers such as Mary McFadden have created a line of clothes using this new form of polyester.3 Ply Non Woven Disposable Protective Children Masks, a superfiber material used to make bulletproof vests. This type of polyester may eventually be used as composite materials for cars and airplanes.