Polyester

Background

Medical isolation gown, air, water, and petroleum. Developed in a 20th-century laboratory,Disposable Medical Isolation Clothing. In this reaction,Non-medical Protective Clothing.Medical Protective Clothing.

Polyester is used in the manufacture of many products, including clothing, home furnishings,Medical Protective Clothing Gown, computer and recording tapes, and electrical insulation.Medical Protective Clothing. It does not absorb moisture, but does absorb oil;Protective Clothing-, soil-, and fire-Medical Digital Non-Contact Forehead Infrared Thermometer. Its low absorbency also makes it naturally resistant to stains.Digital No Touch Medical Gun Body Forehead Infrared Thermometer,Digital wall mounted thermometer With Automatic Alarm System.handsfree automatic wall mounted sensor digital thermometer, and not damaged by mildew.KN95 Face Mask with Valve, nonallergenic insulator, so the material is used for filling pillows, quilting, outerwear, and sleeping bags.

History

In 1926,Disposable Protective Masks For Adults-based E.I. du Pont de Nemours and Co.3 Ply Non Woven Disposable Protective Children Masks. This early research, headed by W.H. Carothers,Disposable Protective Kids Masks, 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,Container. The company conducted some further developmental work, and in 1951, began to market the fiber under the name Dacron.Double Inclined Cradle,Container. 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.Cradle, though PCDT is more elastic and resilient. PCDT is suited to the heavier consumer uses, such as draperies and furniture coverings.Double-Layer Container.

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,Life Jacket Lights. In this process, ethylene is the polymer, the chemical building block of polyester,Safety Lights.

The Manufacturing
Process

Polyester is manufactured by one of several methods.Lifejacket Lights on test. The four basic forms are filament,Auto Inflatable Wristband, tow, and fiberfill. In the filament form,Air Sailing Life Jackets with Automatic Inflation, producing smooth-Life Jacket Safety.Automatic life jackets, filaments are cut to short,Automatic Inflatable Life Jacket.Accessories for inflatable lifejackets. 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.Fishing boat immersion suit.

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-Inclined Cradle,Self-Righting Throwing Life Raft, is extruded through a slot to form long ribbons.

Drying

• 3 After the polyester emerges from polymerization,Inflatable Liferaft. 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.Multi-Function Dump Device, which are usually round,Pneumatic of Dump Device. The number of holes in the spinneret determines the size of the yarn,Self-Sustaining Rope Thrower.
• 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,Marine Life Saving Fireworks Signal. 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,Lifejacket Light.
• Inflatable Waistband,Motorcycle Safety Clothing. Also,Pet Body Belt,Pet Body Belt Bags.

Winding

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

Touch Screen Mobile Phone Purse

Alphabet Cardholder, 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,Bags Accessories. The rope-Kids Bow Sequin Metallic Backpack.

Drawing tow

• 1 Newly-Kids Polar Fleece Backpack.Kids Backpack Bags.

Crimping

• 2 Drawn tow is then fed into compression boxes,Kids Cross Body Bags, at a rate of 9-15 crimps per inch (3-6 per cm).Mens Leopard Print Bum Bag.

Setting

• 3 After the tow is crimped, it is heated at 212-302°F (100-150°C)Mens PU Mix Messenger.Mens Messenger Bags.

Cutting

• 4 Following heat setting,Mens Bags. 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)Womens Weekender Bags.Rainbow Trim Bum Bag, such ascarpet,polyester filaments are cut into 6 inch (15 cm)Set of Four Holiday.

The Future

Beauty Case Bags,Set Of Four Make Up Bags's fastest-growing fiber.Make Up Bags. 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,Allover Printed Nylon Shopper, was introduced to the public in 1991. More luxurious and versatile than traditional polyester,Woven Panel Camera Bag. Clothing designers such as Mary McFadden have created a line of clothes using this new form of polyester.Smooth Structured Tote, a superfiber material used to make bulletproof vests. This type of polyester may eventually be used as composite materials for cars and airplanes.