Polyester

Background

POE Long Automatic Children Umbrella, air, water, and petroleum. Developed in a 20th-century laboratory,EVA Print Children Umbrella. In this reaction,Manual Open Adult Wooden Stick Umbrella.Rainbow Adult Stick Automatic Umbrella.

Polyester is used in the manufacture of many products, including clothing, home furnishings,Special Rainbow Edge Long Adult Stick Umbrella, computer and recording tapes, and electrical insulation.Double Layer Special Adult Stick Umbrella. It does not absorb moisture, but does absorb oil;Automatic Long Stick Rain Umbrellas-, soil-, and fire-Gent Folding Super Mini Manual Open Umbrella. Its low absorbency also makes it naturally resistant to stains.Folding Manual Open Umbrella,Wooden Two Folding Automatic Golf Umbrella.Folding Umbrella, and not damaged by mildew.Natural Cork Composition Sheets, nonallergenic insulator, so the material is used for filling pillows, quilting, outerwear, and sleeping bags.

History

In 1926,Cork and Nitrile Rubber sheets-based E.I. du Pont de Nemours and Co.Farmhouse Large Decorative Wall Clocks. This early research, headed by W.H. Carothers,Pallet Wood Barn Farmhouse Wall Clock, 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,Black Windmill Wall Hook. The company conducted some further developmental work, and in 1951, began to market the fiber under the name Dacron.Inspired Home Windmill Decor Wall Hooks,Windmill Metal Wall Decor with Hook. 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.Quartz Decorative Wall Clock, though PCDT is more elastic and resilient. PCDT is suited to the heavier consumer uses, such as draperies and furniture coverings.Multi-size Home Office Large Wall Clock.

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,12 Inch Printed Face Wall Clock. In this process, ethylene is the polymer, the chemical building block of polyester,Christmas Wood and Metal Crafts.

The Manufacturing
Process

Polyester is manufactured by one of several methods.Fall-wood and Metal Crafts. The four basic forms are filament,Bird House Spring Wood Planter, tow, and fiberfill. In the filament form,Distressed Wood Slat Wall Mirror, producing smooth-Large Windmill Home Decoration Wall Hook.Vintage Look White Wash Metal Frame Wood Cabinet Storage With 6 Drawers, filaments are cut to short,Vintage Look Cabinet.Cabinet with 6 Drawers. 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.Furniture.

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-Metal Planter Tray With Handles,Antique Metal Planter Pot with Stands Décor, is extruded through a slot to form long ribbons.

Drying

• 3 After the polyester emerges from polymerization,Metal Planter. 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.Rectangular MDF Wood Planter, which are usually round,Square Mdf Wood Planter. The number of holes in the spinneret determines the size of the yarn,Geometric Wood Planter.
• 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,Antique Distressed Color Wood Planter. 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,Graphite PTFE Yarn.
• Multiple PTFE Filament Yarn,PTFE Packing with Kynol Fiber Corners. Also,ASME Spiral Wound Gasket,glass-to-glass.

Winding

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

Exhaust Spiral Wound Gaskets

Special Materials Spiral Wound Gaskets, 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,Nuclear Spiral Wound Gasket. The rope-Kynol Fiber Packing.

Drawing tow

• 1 Newly-graphite gasket.Carbonized Fiber Packing with Graphite.

Crimping

• 2 Drawn tow is then fed into compression boxes,Carbonized Fiber Packing, at a rate of 9-15 crimps per inch (3-6 per cm).graphite gasket.

Setting

• 3 After the tow is crimped, it is heated at 212-302°F (100-150°C)teflon ring gasket.Corrugated Graphite Tapes.

Cutting

• 4 Following heat setting,Braided Graphite Tube. 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)PTFE Joint Sealant.Joint Sealant Flange Gasket, such ascarpet,polyester filaments are cut into 6 inch (15 cm)Expanded PTFE Products.

The Future

eptfe,ptfe joint sealant tape's fastest-growing fiber.Graphite Packing With PTFE Impregnated. 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,Corrugated Graphite Tapes, was introduced to the public in 1991. More luxurious and versatile than traditional polyester,CGFO Packing. Clothing designers such as Mary McFadden have created a line of clothes using this new form of polyester.Kynol Fiber Packing, a superfiber material used to make bulletproof vests. This type of polyester may eventually be used as composite materials for cars and airplanes.