Polyester

Background

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

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

History

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

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,Disinfection Products. In this process, ethylene is the polymer, the chemical building block of polyester,Protective Safety Goggles.

The Manufacturing
Process

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

Drying

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

Medical Protective Clothing, 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,Protective Clothing. The rope-Medical Digital Non-Contact Forehead Infrared Thermometer.

Drawing tow

• 1 Newly-Digital No Touch Medical Gun Body Forehead Infrared Thermometer.Digital wall mounted thermometer With Automatic Alarm System.

Crimping

• 2 Drawn tow is then fed into compression boxes,handsfree automatic wall mounted sensor digital thermometer, at a rate of 9-15 crimps per inch (3-6 per cm).KN95 Face Mask with Valve.

Setting

• 3 After the tow is crimped, it is heated at 212-302°F (100-150°C)Disposable Protective Masks For Adults.3 Ply Non Woven Disposable Protective Children Masks.

Cutting

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

The Future

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