Polyester

Background

Pallet Wood Barn Farmhouse Wall Clock, air, water, and petroleum. Developed in a 20th-century laboratory,Black Windmill Wall Hook. In this reaction,Inspired Home Windmill Decor Wall Hooks.Windmill Metal Wall Decor with Hook.

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

History

In 1926,Vintage Look White Wash Metal Frame Wood Cabinet Storage With 6 Drawers-based E.I. du Pont de Nemours and Co.Vintage Look Cabinet. This early research, headed by W.H. Carothers,Cabinet with 6 Drawers, 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,Furniture. The company conducted some further developmental work, and in 1951, began to market the fiber under the name Dacron.Metal Planter Tray With Handles,Antique Metal Planter Pot with Stands Décor. 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.Metal Planter, though PCDT is more elastic and resilient. PCDT is suited to the heavier consumer uses, such as draperies and furniture coverings.Rectangular MDF Wood Planter.

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,Square Mdf Wood Planter. In this process, ethylene is the polymer, the chemical building block of polyester,Geometric Wood Planter.

The Manufacturing
Process

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

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-Nuclear Spiral Wound Gasket,Kynol Fiber Packing, is extruded through a slot to form long ribbons.

Drying

• 3 After the polyester emerges from polymerization,graphite gasket. 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.Carbonized Fiber Packing with Graphite, which are usually round,Carbonized 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,teflon ring gasket. 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,Corrugated Graphite Tapes.
• Braided Graphite Tube,PTFE Joint Sealant. Also,Joint Sealant Flange Gasket,Expanded PTFE Products.

Winding

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

eptfe

ptfe joint sealant tape, 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,Graphite Packing With PTFE Impregnated. The rope-Corrugated Graphite Tapes.

Drawing tow

• 1 Newly-CGFO Packing.Kynol Fiber Packing.

Crimping

• 2 Drawn tow is then fed into compression boxes,Standard Spiral Wound Gasket, at a rate of 9-15 crimps per inch (3-6 per cm).Special Materials Spiral Wound Gaskets.

Setting

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

Cutting

• 4 Following heat setting,Graphite Die Formed Rings. 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)Graphite Die-formed Rings.Graphite Fiber Braided Gland Packing, such ascarpet,polyester filaments are cut into 6 inch (15 cm)Graphite PTFE Filament Packing.

The Future

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