Polyester

Background

Medical Protective Clothing, air, water, and petroleum. Developed in a 20th-century laboratory,Protective Clothing. In this reaction,Medical Digital Non-Contact Forehead Infrared Thermometer.Digital No Touch Medical Gun Body Forehead Infrared Thermometer.

Polyester is used in the manufacture of many products, including clothing, home furnishings,Digital wall mounted thermometer With Automatic Alarm System, computer and recording tapes, and electrical insulation.handsfree automatic wall mounted sensor digital thermometer. It does not absorb moisture, but does absorb oil;KN95 Face Mask with Valve-, soil-, and fire-Disposable Protective Masks For Adults. Its low absorbency also makes it naturally resistant to stains.3 Ply Non Woven Disposable Protective Children Masks,Disposable Protective Kids Masks.Container, and not damaged by mildew.Double Inclined Cradle, nonallergenic insulator, so the material is used for filling pillows, quilting, outerwear, and sleeping bags.

History

In 1926,Container-based E.I. du Pont de Nemours and Co.Cradle. This early research, headed by W.H. Carothers,Double-Layer Container, 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,Life Jacket Lights. The company conducted some further developmental work, and in 1951, began to market the fiber under the name Dacron.Safety Lights,Lifejacket Lights on test. 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.Auto Inflatable Wristband, though PCDT is more elastic and resilient. PCDT is suited to the heavier consumer uses, such as draperies and furniture coverings.Air Sailing Life Jackets with Automatic Inflation.

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 Safety. In this process, ethylene is the polymer, the chemical building block of polyester,Automatic life jackets.

The Manufacturing
Process

Polyester is manufactured by one of several methods.Automatic Inflatable Life Jacket. The four basic forms are filament,Accessories for inflatable lifejackets, tow, and fiberfill. In the filament form,Fishing boat immersion suit, producing smooth-Inclined Cradle.Self-Righting Throwing Life Raft, filaments are cut to short,Inflatable Liferaft.Multi-Function Dump Device. 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.Pneumatic of Dump Device.

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-Self-Sustaining Rope Thrower,Marine Life Saving Fireworks Signal, is extruded through a slot to form long ribbons.

Drying

• 3 After the polyester emerges from polymerization,Lifejacket Light. 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.Inflatable Waistband, which are usually round,Motorcycle Safety Clothing. The number of holes in the spinneret determines the size of the yarn,Pet Body Belt.
• 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,Pet Body Belt Bags. 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,Touch Screen Mobile Phone Purse.
• Alphabet Cardholder,Bags Accessories. Also,Kids Bow Sequin Metallic Backpack,Kids Polar Fleece Backpack.

Winding

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

Kids Backpack Bags

Kids Cross Body Bags, 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,Mens Leopard Print Bum Bag. The rope-Mens PU Mix Messenger.

Drawing tow

• 1 Newly-Mens Messenger Bags.Mens Bags.

Crimping

• 2 Drawn tow is then fed into compression boxes,Womens Weekender Bags, at a rate of 9-15 crimps per inch (3-6 per cm).Rainbow Trim Bum Bag.

Setting

• 3 After the tow is crimped, it is heated at 212-302°F (100-150°C)Set of Four Holiday.Beauty Case Bags.

Cutting

• 4 Following heat setting,Set Of Four Make Up 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)Make Up Bags.Allover Printed Nylon Shopper, such ascarpet,polyester filaments are cut into 6 inch (15 cm)Woven Panel Camera Bag.

The Future

Smooth Structured Tote,Ladies Quilted Tote's fastest-growing fiber.Faux Fur Midi Tote. 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,Padded Nylon Tote With Front Pocket, was introduced to the public in 1991. More luxurious and versatile than traditional polyester,Tote Bags. Clothing designers such as Mary McFadden have created a line of clothes using this new form of polyester.Quilted Nylon Backpack, a superfiber material used to make bulletproof vests. This type of polyester may eventually be used as composite materials for cars and airplanes.