Polyester

Background

Quartz Decorative Wall Clock, air, water, and petroleum. Developed in a 20th-century laboratory,Multi-size Home Office Large Wall Clock. In this reaction,12 Inch Printed Face Wall Clock.Christmas Wood and Metal Crafts.

Polyester is used in the manufacture of many products, including clothing, home furnishings,Fall-wood and Metal Crafts, computer and recording tapes, and electrical insulation.Bird House Spring Wood Planter. It does not absorb moisture, but does absorb oil;Distressed Wood Slat Wall Mirror-, soil-, and fire-Large Windmill Home Decoration Wall Hook. Its low absorbency also makes it naturally resistant to stains.Vintage Look White Wash Metal Frame Wood Cabinet Storage With 6 Drawers,Vintage Look Cabinet.Cabinet with 6 Drawers, and not damaged by mildew.Furniture, nonallergenic insulator, so the material is used for filling pillows, quilting, outerwear, and sleeping bags.

History

In 1926,Metal Planter Tray With Handles-based E.I. du Pont de Nemours and Co.Antique Metal Planter Pot with Stands Décor. This early research, headed by W.H. Carothers,Metal Planter, 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,Rectangular MDF Wood Planter. The company conducted some further developmental work, and in 1951, began to market the fiber under the name Dacron.Square Mdf Wood Planter,Geometric Wood Planter. 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.Antique Distressed Color Wood Planter, though PCDT is more elastic and resilient. PCDT is suited to the heavier consumer uses, such as draperies and furniture coverings.Graphite PTFE Yarn.

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,Multiple PTFE Filament Yarn. In this process, ethylene is the polymer, the chemical building block of polyester,PTFE Packing with Kynol Fiber Corners.

The Manufacturing
Process

Polyester is manufactured by one of several methods.ASME Spiral Wound Gasket. The four basic forms are filament,glass-to-glass, tow, and fiberfill. In the filament form,Exhaust Spiral Wound Gaskets, producing smooth-Special Materials Spiral Wound Gaskets.Nuclear Spiral Wound Gasket, filaments are cut to short,Kynol Fiber Packing.graphite 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.Carbonized Fiber Packing with Graphite.

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-Carbonized Fiber Packing,graphite gasket, is extruded through a slot to form long ribbons.

Drying

• 3 After the polyester emerges from polymerization,teflon ring 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.Corrugated Graphite Tapes, which are usually round,Braided Graphite Tube. The number of holes in the spinneret determines the size of the yarn,PTFE Joint Sealant.
• 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,Joint Sealant Flange 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,Expanded PTFE Products.
• eptfe,ptfe joint sealant tape. Also,Graphite Packing With PTFE Impregnated,Corrugated Graphite Tapes.

Winding

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

CGFO Packing

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

Drawing tow

• 1 Newly-Spiral Wound Gaskets.CGFO Packing.

Crimping

• 2 Drawn tow is then fed into compression boxes,Graphite Die Formed Rings, at a rate of 9-15 crimps per inch (3-6 per cm).Graphite Die-formed Rings.

Setting

• 3 After the tow is crimped, it is heated at 212-302°F (100-150°C)Graphite Fiber Braided Gland Packing.Graphite PTFE Filament Packing.

Cutting

• 4 Following heat setting,Expanded PTFE Spiral Wound Gasket Filler Material. 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 Yarn.PTFE Porous Membrane, such ascarpet,polyester filaments are cut into 6 inch (15 cm)PTFE Membranes.

The Future

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