Polyester

Background

Air Sailing Life Jackets with Automatic Inflation, air, water, and petroleum. Developed in a 20th-century laboratory,Life Jacket Safety. In this reaction,Automatic life jackets.Automatic Inflatable Life Jacket.

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

History

In 1926,Marine Life Saving Fireworks Signal-based E.I. du Pont de Nemours and Co.Lifejacket Light. This early research, headed by W.H. Carothers,Inflatable Waistband, 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,Motorcycle Safety Clothing. The company conducted some further developmental work, and in 1951, began to market the fiber under the name Dacron.Pet Body Belt,Pet Body Belt Bags. 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.Touch Screen Mobile Phone Purse, though PCDT is more elastic and resilient. PCDT is suited to the heavier consumer uses, such as draperies and furniture coverings.Alphabet Cardholder.

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,Bags Accessories. In this process, ethylene is the polymer, the chemical building block of polyester,Kids Bow Sequin Metallic Backpack.

The Manufacturing
Process

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

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-Rainbow Trim Bum Bag,Set of Four Holiday, is extruded through a slot to form long ribbons.

Drying

• 3 After the polyester emerges from polymerization,Beauty Case 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.Set Of Four Make Up Bags, which are usually round,Make Up Bags. The number of holes in the spinneret determines the size of the yarn,Allover Printed Nylon Shopper.
• 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,Woven Panel Camera Bag. 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,Smooth Structured Tote.
• Ladies Quilted Tote,Faux Fur Midi Tote. Also,Padded Nylon Tote With Front Pocket,Tote 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.

Quilted Nylon Backpack

Casual Nylon Backpack, 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,Ladies Duffle Cross Body. The rope-Structured Formal Cross Body.

Drawing tow

• 1 Newly-Quilted Boxy Cross Body.Ladies Monogram Hobo.

Crimping

• 2 Drawn tow is then fed into compression boxes,Ladies Twist Handle Medium Hobo, at a rate of 9-15 crimps per inch (3-6 per cm).Work Bags.

Setting

• 3 After the tow is crimped, it is heated at 212-302°F (100-150°C)Womens Bags.Belt Sander.

Cutting

• 4 Following heat setting,Plate-Type Cutting Center. 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)Hot-press Machine.Hydraulic Shearing Machine, such ascarpet,polyester filaments are cut into 6 inch (15 cm)Three Wide Belts Sanding Machine.

The Future

Floating Primer Sander,NC Tenoning Machine's fastest-growing fiber.Cnc Double Side Tenon Machine Computer. 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,CNC Double-end Tenoning Machine 6 Spindles, was introduced to the public in 1991. More luxurious and versatile than traditional polyester,Four-side Moulder . Clothing designers such as Mary McFadden have created a line of clothes using this new form of polyester.Four-side Moulder , a superfiber material used to make bulletproof vests. This type of polyester may eventually be used as composite materials for cars and airplanes.