Polyester

Background

Natural Cork Composition Sheets, air, water, and petroleum. Developed in a 20th-century laboratory,Cork and Nitrile Rubber sheets. In this reaction,Farmhouse Large Decorative Wall Clocks.Pallet Wood Barn Farmhouse Wall Clock.

Polyester is used in the manufacture of many products, including clothing, home furnishings,Black Windmill Wall Hook, computer and recording tapes, and electrical insulation.Inspired Home Windmill Decor Wall Hooks. It does not absorb moisture, but does absorb oil;Windmill Metal Wall Decor with Hook-, soil-, and fire-Quartz Decorative Wall Clock. Its low absorbency also makes it naturally resistant to stains.Multi-size Home Office Large Wall Clock,12 Inch Printed Face Wall Clock.Christmas Wood and Metal Crafts, and not damaged by mildew.Fall-wood and Metal Crafts, nonallergenic insulator, so the material is used for filling pillows, quilting, outerwear, and sleeping bags.

History

In 1926,Bird House Spring Wood Planter-based E.I. du Pont de Nemours and Co.Distressed Wood Slat Wall Mirror. This early research, headed by W.H. Carothers,Large Windmill Home Decoration Wall Hook, 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,Vintage Look White Wash Metal Frame Wood Cabinet Storage With 6 Drawers. The company conducted some further developmental work, and in 1951, began to market the fiber under the name Dacron.Vintage Look Cabinet,Cabinet with 6 Drawers. 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.Furniture, though PCDT is more elastic and resilient. PCDT is suited to the heavier consumer uses, such as draperies and furniture coverings.Metal Planter Tray With Handles.

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,Antique Metal Planter Pot with Stands Décor. In this process, ethylene is the polymer, the chemical building block of polyester,Metal Planter.

The Manufacturing
Process

Polyester is manufactured by one of several methods.Rectangular MDF Wood Planter. The four basic forms are filament,Square Mdf Wood Planter, tow, and fiberfill. In the filament form,Geometric Wood Planter, producing smooth-Antique Distressed Color Wood Planter.Graphite PTFE Yarn, filaments are cut to short,Multiple PTFE Filament Yarn.PTFE Packing with Kynol Fiber Corners. 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.ASME Spiral Wound Gasket.

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-glass-to-glass,Exhaust Spiral Wound Gaskets, is extruded through a slot to form long ribbons.

Drying

• 3 After the polyester emerges from polymerization,Special Materials Spiral Wound Gaskets. 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.Nuclear Spiral Wound Gasket, which are usually round,Kynol Fiber Packing. The number of holes in the spinneret determines the size of the yarn,graphite gasket.
• 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,Carbonized Fiber Packing with Graphite. 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,Carbonized Fiber Packing.
• graphite gasket,teflon ring gasket. Also,Corrugated Graphite Tapes,Braided Graphite Tube.

Winding

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

PTFE Joint Sealant

Joint Sealant Flange Gasket, 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,Expanded PTFE Products. The rope-eptfe.

Drawing tow

• 1 Newly-ptfe joint sealant tape.Graphite Packing With PTFE Impregnated.

Crimping

• 2 Drawn tow is then fed into compression boxes,Corrugated Graphite Tapes, at a rate of 9-15 crimps per inch (3-6 per cm).CGFO Packing.

Setting

• 3 After the tow is crimped, it is heated at 212-302°F (100-150°C)Kynol Fiber Packing.Standard Spiral Wound Gasket.

Cutting

• 4 Following heat setting,Special Materials Spiral Wound Gaskets. 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)Spiral Wound Gaskets.CGFO Packing, such ascarpet,polyester filaments are cut into 6 inch (15 cm)Graphite Die Formed Rings.

The Future

Graphite Die-formed Rings,Graphite Fiber Braided Gland Packing's fastest-growing fiber.Graphite PTFE Filament Packing. 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,Expanded PTFE Spiral Wound Gasket Filler Material, was introduced to the public in 1991. More luxurious and versatile than traditional polyester,PTFE Yarn. Clothing designers such as Mary McFadden have created a line of clothes using this new form of polyester.PTFE Porous Membrane, a superfiber material used to make bulletproof vests. This type of polyester may eventually be used as composite materials for cars and airplanes.