Polyester

Background

Distressed Wood Slat Wall Mirror, air, water, and petroleum. Developed in a 20th-century laboratory,Large Windmill Home Decoration Wall Hook. In this reaction,Vintage Look White Wash Metal Frame Wood Cabinet Storage With 6 Drawers.Vintage Look Cabinet.

Polyester is used in the manufacture of many products, including clothing, home furnishings,Cabinet with 6 Drawers, computer and recording tapes, and electrical insulation.Furniture. It does not absorb moisture, but does absorb oil;Metal Planter Tray With Handles-, soil-, and fire-Antique Metal Planter Pot with Stands Décor. Its low absorbency also makes it naturally resistant to stains.Metal Planter,Rectangular MDF Wood Planter.Square Mdf Wood Planter, and not damaged by mildew.Geometric Wood Planter, nonallergenic insulator, so the material is used for filling pillows, quilting, outerwear, and sleeping bags.

History

In 1926,Antique Distressed Color Wood Planter-based E.I. du Pont de Nemours and Co.Graphite PTFE Yarn. This early research, headed by W.H. Carothers,Multiple PTFE Filament Yarn, 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,PTFE Packing with Kynol Fiber Corners. The company conducted some further developmental work, and in 1951, began to market the fiber under the name Dacron.ASME Spiral Wound Gasket,glass-to-glass. 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.Exhaust Spiral Wound Gaskets, though PCDT is more elastic and resilient. PCDT is suited to the heavier consumer uses, such as draperies and furniture coverings.Special Materials Spiral Wound Gaskets.

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,Nuclear Spiral Wound Gasket. In this process, ethylene is the polymer, the chemical building block of polyester,Kynol Fiber Packing.

The Manufacturing
Process

Polyester is manufactured by one of several methods.graphite gasket. The four basic forms are filament,Carbonized Fiber Packing with Graphite, tow, and fiberfill. In the filament form,Carbonized Fiber Packing, producing smooth-graphite gasket.teflon ring gasket, filaments are cut to short,Corrugated Graphite Tapes.Braided Graphite Tube. 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.PTFE Joint Sealant.

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-Joint Sealant Flange Gasket,Expanded PTFE Products, is extruded through a slot to form long ribbons.

Drying

• 3 After the polyester emerges from polymerization,eptfe. 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.ptfe joint sealant tape, which are usually round,Graphite Packing With PTFE Impregnated. The number of holes in the spinneret determines the size of the yarn,Corrugated Graphite Tapes.
• 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,CGFO 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,Kynol Fiber Packing.
• Standard Spiral Wound Gasket,Special Materials Spiral Wound Gaskets. Also,Spiral Wound Gaskets,CGFO Packing.

Winding

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

Graphite Die Formed Rings

Graphite Die-formed Rings, 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 Fiber Braided Gland Packing. The rope-Graphite PTFE Filament Packing.

Drawing tow

• 1 Newly-Expanded PTFE Spiral Wound Gasket Filler Material.PTFE Yarn.

Crimping

• 2 Drawn tow is then fed into compression boxes,PTFE Porous Membrane, at a rate of 9-15 crimps per inch (3-6 per cm).PTFE Membranes.

Setting

• 3 After the tow is crimped, it is heated at 212-302°F (100-150°C)Expanded PTFE Sheet.PTFE Sheets.

Cutting

• 4 Following heat setting,PTFE Packing. 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)Expanded PTFE Gasket.Pipe Thread Sealing Cord, such ascarpet,polyester filaments are cut into 6 inch (15 cm)PTFE Gaskets.

The Future

Tanged Metal Reinforced Graphite Gasket,Tanged Metal Reinforced Graphite Gasket's fastest-growing fiber.Graphite Gasket Reinforced With Metal Mesh. 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,Graphite Gasket Reinforced With Metal Foil, was introduced to the public in 1991. More luxurious and versatile than traditional polyester,Pure Expanded Graphite Gasket. Clothing designers such as Mary McFadden have created a line of clothes using this new form of polyester.Pure Expanded Graphite Gasket, a superfiber material used to make bulletproof vests. This type of polyester may eventually be used as composite materials for cars and airplanes.