Polyester

Background

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

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

History

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

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

The Manufacturing
Process

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

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,Disinfection Products, is extruded through a slot to form long ribbons.

Drying

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

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

Drawing tow

• 1 Newly-Disposable Medical Cap.Medical Cap.

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).Medical isolation gown.

Setting

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

Cutting

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

The Future

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