Polyester

Background

Container, air, water, and petroleum. Developed in a 20th-century laboratory,Cradle. In this reaction,Double-Layer Container.Life Jacket Lights.

Polyester is used in the manufacture of many products, including clothing, home furnishings,Safety Lights, computer and recording tapes, and electrical insulation.Lifejacket Lights on test. It does not absorb moisture, but does absorb oil;Auto Inflatable Wristband-, soil-, and fire-Air Sailing Life Jackets with Automatic Inflation. Its low absorbency also makes it naturally resistant to stains.Life Jacket Safety,Automatic life jackets.Automatic Inflatable Life Jacket, and not damaged by mildew.Accessories for inflatable lifejackets, nonallergenic insulator, so the material is used for filling pillows, quilting, outerwear, and sleeping bags.

History

In 1926,Fishing boat immersion suit-based E.I. du Pont de Nemours and Co.Inclined Cradle. This early research, headed by W.H. Carothers,Self-Righting Throwing Life Raft, 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,Inflatable Liferaft. The company conducted some further developmental work, and in 1951, began to market the fiber under the name Dacron.Multi-Function Dump Device,Pneumatic of Dump Device. 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.Self-Sustaining Rope Thrower, though PCDT is more elastic and resilient. PCDT is suited to the heavier consumer uses, such as draperies and furniture coverings.Marine Life Saving Fireworks Signal.

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,Lifejacket Light. In this process, ethylene is the polymer, the chemical building block of polyester,Inflatable Waistband.

The Manufacturing
Process

Polyester is manufactured by one of several methods.Motorcycle Safety Clothing. The four basic forms are filament,Pet Body Belt, tow, and fiberfill. In the filament form,Pet Body Belt Bags, producing smooth-Touch Screen Mobile Phone Purse.Alphabet Cardholder, filaments are cut to short,Bags Accessories.Kids Bow Sequin Metallic Backpack. 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.Kids Polar Fleece Backpack.

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-Kids Backpack Bags,Kids Cross Body Bags, is extruded through a slot to form long ribbons.

Drying

• 3 After the polyester emerges from polymerization,Mens Leopard Print Bum Bag. 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.Mens PU Mix Messenger, which are usually round,Mens Messenger Bags. The number of holes in the spinneret determines the size of the yarn,Mens Bags.
• 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,Womens Weekender 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,Rainbow Trim Bum Bag.
• Set of Four Holiday,Beauty Case Bags. Also,Set Of Four Make Up Bags,Make Up 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.

Allover Printed Nylon Shopper

Woven Panel Camera Bag, 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,Smooth Structured Tote. The rope-Ladies Quilted Tote.

Drawing tow

• 1 Newly-Faux Fur Midi Tote.Padded Nylon Tote With Front Pocket.

Crimping

• 2 Drawn tow is then fed into compression boxes,Tote Bags, at a rate of 9-15 crimps per inch (3-6 per cm).Quilted Nylon Backpack.

Setting

• 3 After the tow is crimped, it is heated at 212-302°F (100-150°C)Casual Nylon Backpack.Ladies Duffle Cross Body.

Cutting

• 4 Following heat setting,Structured Formal Cross Body. 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)Quilted Boxy Cross Body.Ladies Monogram Hobo, such ascarpet,polyester filaments are cut into 6 inch (15 cm)Ladies Twist Handle Medium Hobo.

The Future

Work Bags,Womens Bags's fastest-growing fiber.Belt Sander. 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,Plate-Type Cutting Center, was introduced to the public in 1991. More luxurious and versatile than traditional polyester,Hot-press Machine. Clothing designers such as Mary McFadden have created a line of clothes using this new form of polyester.Hydraulic Shearing Machine, a superfiber material used to make bulletproof vests. This type of polyester may eventually be used as composite materials for cars and airplanes.