Polyester

Background

Safety Lights, air, water, and petroleum. Developed in a 20th-century laboratory,Lifejacket Lights on test. In this reaction,Auto Inflatable Wristband.Air Sailing Life Jackets with Automatic Inflation.

Polyester is used in the manufacture of many products, including clothing, home furnishings,Life Jacket Safety, computer and recording tapes, and electrical insulation.Automatic life jackets. It does not absorb moisture, but does absorb oil;Automatic Inflatable Life Jacket-, soil-, and fire-Accessories for inflatable lifejackets. Its low absorbency also makes it naturally resistant to stains.Fishing boat immersion suit,Inclined Cradle.Self-Righting Throwing Life Raft, and not damaged by mildew.Inflatable Liferaft, nonallergenic insulator, so the material is used for filling pillows, quilting, outerwear, and sleeping bags.

History

In 1926,Multi-Function Dump Device-based E.I. du Pont de Nemours and Co.Pneumatic of Dump Device. This early research, headed by W.H. Carothers,Self-Sustaining Rope Thrower, 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,Marine Life Saving Fireworks Signal. The company conducted some further developmental work, and in 1951, began to market the fiber under the name Dacron.Lifejacket Light,Inflatable Waistband. 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.Motorcycle Safety Clothing, though PCDT is more elastic and resilient. PCDT is suited to the heavier consumer uses, such as draperies and furniture coverings.Pet Body Belt.

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,Pet Body Belt Bags. In this process, ethylene is the polymer, the chemical building block of polyester,Touch Screen Mobile Phone Purse.

The Manufacturing
Process

Polyester is manufactured by one of several methods.Alphabet Cardholder. The four basic forms are filament,Bags Accessories, tow, and fiberfill. In the filament form,Kids Bow Sequin Metallic Backpack, producing smooth-Kids Polar Fleece Backpack.Kids Backpack Bags, filaments are cut to short,Kids Cross Body Bags.Mens Leopard Print Bum Bag. 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.Mens PU Mix Messenger.

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-Mens Messenger Bags,Mens Bags, is extruded through a slot to form long ribbons.

Drying

• 3 After the polyester emerges from polymerization,Womens Weekender Bags. 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.Rainbow Trim Bum Bag, which are usually round,Set of Four Holiday. The number of holes in the spinneret determines the size of the yarn,Beauty Case 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,Set Of Four Make Up 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,Make Up Bags.
• Allover Printed Nylon Shopper,Woven Panel Camera Bag. Also,Smooth Structured Tote,Ladies Quilted Tote.

Winding

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

Faux Fur Midi Tote

Padded Nylon Tote With Front Pocket, 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,Tote Bags. The rope-Quilted Nylon Backpack.

Drawing tow

• 1 Newly-Casual Nylon Backpack.Ladies Duffle Cross Body.

Crimping

• 2 Drawn tow is then fed into compression boxes,Structured Formal Cross Body, at a rate of 9-15 crimps per inch (3-6 per cm).Quilted Boxy Cross Body.

Setting

• 3 After the tow is crimped, it is heated at 212-302°F (100-150°C)Ladies Monogram Hobo.Ladies Twist Handle Medium Hobo.

Cutting

• 4 Following heat setting,Work 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 Bags.Belt Sander, such ascarpet,polyester filaments are cut into 6 inch (15 cm)Plate-Type Cutting Center.

The Future

Hot-press Machine,Hydraulic Shearing Machine's fastest-growing fiber.Three Wide Belts Sanding Machine. 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,Floating Primer Sander, was introduced to the public in 1991. More luxurious and versatile than traditional polyester,NC Tenoning Machine. Clothing designers such as Mary McFadden have created a line of clothes using this new form of polyester.Cnc Double Side Tenon Machine Computer, a superfiber material used to make bulletproof vests. This type of polyester may eventually be used as composite materials for cars and airplanes.