Polyester

Background

Compressed Flat Vacuum Bag, air, water, and petroleum. Developed in a 20th-century laboratory,Space Saver Compressed Bag. In this reaction,Compressed Bag.Display Plywood Clothes Hanger with Leopard Head.

Polyester is used in the manufacture of many products, including clothing, home furnishings,Wooden Cloth Hanger Rack, computer and recording tapes, and electrical insulation.Luxury Antique Wooden Shirt Hanger. It does not absorb moisture, but does absorb oil;Wooden Hanger Anti Theft with Clips-, soil-, and fire-Natural wood Pack Solid Wood Clothes Hangers. Its low absorbency also makes it naturally resistant to stains.Wood Clothes Hangers,Wooden Hanger.Kn95 Masks With Respirator, and not damaged by mildew.Prevention Key, nonallergenic insulator, so the material is used for filling pillows, quilting, outerwear, and sleeping bags.

History

In 1926,Oxygen Machine-based E.I. du Pont de Nemours and Co.Washable Fabric Mask. This early research, headed by W.H. Carothers,Cotton Fabric Germ Protection Mask, 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,Fabric Mask. The company conducted some further developmental work, and in 1951, began to market the fiber under the name Dacron.Electric Alcohol Disinfectant Sprayer,Alcohol Sprayer. 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.Alcohol Disinfectant, though PCDT is more elastic and resilient. PCDT is suited to the heavier consumer uses, such as draperies and furniture coverings.Hand Sanitizer Gel With Alcohol.

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,Hand Sanitizer. In this process, ethylene is the polymer, the chemical building block of polyester,Disinfection Products.

The Manufacturing
Process

Polyester is manufactured by one of several methods.Protective Safety Goggles. The four basic forms are filament,Protective Safety Eye Protection Goggles, tow, and fiberfill. In the filament form,Medical Protective Eye Goggles, producing smooth-Anti Virus Medical Safety Goggles.Safety Glasses Virus Medical Goggles, filaments are cut to short,Protective Goggles.Disposable Nitrile Gloves. 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.Disposable PVC Gloves.

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-Latex Gloves,Disposable PE Gloves, is extruded through a slot to form long ribbons.

Drying

• 3 After the polyester emerges from polymerization,Disposable PE Gloves With Block. 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.Disposable Gloves, which are usually round,Medical Isolation Shoe Cover. The number of holes in the spinneret determines the size of the yarn,Medical Shoe Cover.
• 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,Disposable Medical Cap. 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,Medical Cap.
• Medical Isolation Gown,Medical isolation gown. Also,Disposable Medical Isolation Clothing,Non-medical Protective Clothing.

Winding

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

Medical Protective Clothing

Medical Protective Clothing Gown, 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 Protective Clothing. The rope-Protective Clothing.

Drawing tow

• 1 Newly-Medical Digital Non-Contact Forehead Infrared Thermometer.Digital No Touch Medical Gun Body Forehead Infrared Thermometer.

Crimping

• 2 Drawn tow is then fed into compression boxes,Digital wall mounted thermometer With Automatic Alarm System, at a rate of 9-15 crimps per inch (3-6 per cm).handsfree automatic wall mounted sensor digital thermometer.

Setting

• 3 After the tow is crimped, it is heated at 212-302°F (100-150°C)KN95 Face Mask with Valve.Disposable Protective Masks For Adults.

Cutting

• 4 Following heat setting,3 Ply Non Woven Disposable Protective Children Masks. 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)Disposable Protective Kids Masks.Container, such ascarpet,polyester filaments are cut into 6 inch (15 cm)Double Inclined Cradle.

The Future

Container,Cradle's fastest-growing fiber.Double-Layer Container. 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,Life Jacket Lights, was introduced to the public in 1991. More luxurious and versatile than traditional polyester,Safety Lights. Clothing designers such as Mary McFadden have created a line of clothes using this new form of polyester.Lifejacket Lights on test, a superfiber material used to make bulletproof vests. This type of polyester may eventually be used as composite materials for cars and airplanes.