Polyester

Background

Vintage Look Cabinet, air, water, and petroleum. Developed in a 20th-century laboratory,Cabinet with 6 Drawers. In this reaction,Furniture.Metal Planter Tray With Handles.

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

History

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

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,Carbonized Fiber Packing with Graphite. In this process, ethylene is the polymer, the chemical building block of polyester,Carbonized Fiber Packing.

The Manufacturing
Process

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

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-ptfe joint sealant tape,Graphite Packing With PTFE Impregnated, is extruded through a slot to form long ribbons.

Drying

• 3 After the polyester emerges from polymerization,Corrugated Graphite Tapes. 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.CGFO Packing, which are usually round,Kynol Fiber Packing. The number of holes in the spinneret determines the size of the yarn,Standard Spiral Wound 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,Special Materials Spiral Wound Gaskets. 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,Spiral Wound Gaskets.
• CGFO Packing,Graphite Die Formed Rings. Also,Graphite Die-formed Rings,Graphite Fiber Braided Gland 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 PTFE Filament Packing

Expanded PTFE Spiral Wound Gasket Filler Material, 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,PTFE Yarn. The rope-PTFE Porous Membrane.

Drawing tow

• 1 Newly-PTFE Membranes.Expanded PTFE Sheet.

Crimping

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

Setting

• 3 After the tow is crimped, it is heated at 212-302°F (100-150°C)Expanded PTFE Gasket.Pipe Thread Sealing Cord.

Cutting

• 4 Following heat setting,PTFE 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)Tanged Metal Reinforced Graphite Gasket.Tanged Metal Reinforced Graphite Gasket, such ascarpet,polyester filaments are cut into 6 inch (15 cm)Graphite Gasket Reinforced With Metal Mesh.

The Future

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