Polyester

Background

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

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

History

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

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,Metal Planter. In this process, ethylene is the polymer, the chemical building block of polyester,Rectangular MDF Wood Planter.

The Manufacturing
Process

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

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

Drying

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

Winding

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

Joint Sealant Flange Gasket

Expanded PTFE Products, 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,eptfe. The rope-ptfe joint sealant tape.

Drawing tow

• 1 Newly-Graphite Packing With PTFE Impregnated.Corrugated Graphite Tapes.

Crimping

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

Setting

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

Cutting

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

The Future

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