Polyester

Background

Furniture, air, water, and petroleum. Developed in a 20th-century laboratory,Metal Planter Tray With Handles. In this reaction,Antique Metal Planter Pot with Stands Décor.Metal Planter.

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

History

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

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,graphite gasket. In this process, ethylene is the polymer, the chemical building block of polyester,teflon ring gasket.

The Manufacturing
Process

Polyester is manufactured by one of several methods.Corrugated Graphite Tapes. The four basic forms are filament,Braided Graphite Tube, tow, and fiberfill. In the filament form,PTFE Joint Sealant, producing smooth-Joint Sealant Flange Gasket.Expanded PTFE Products, filaments are cut to short,eptfe.ptfe joint sealant tape. 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.Graphite Packing With PTFE Impregnated.

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-Corrugated Graphite Tapes,CGFO Packing, is extruded through a slot to form long ribbons.

Drying

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

Winding

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

PTFE Yarn

PTFE Porous Membrane, 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 Membranes. The rope-Expanded PTFE Sheet.

Drawing tow

• 1 Newly-PTFE Sheets.PTFE Packing.

Crimping

• 2 Drawn tow is then fed into compression boxes,Expanded PTFE Gasket, at a rate of 9-15 crimps per inch (3-6 per cm).Pipe Thread Sealing Cord.

Setting

• 3 After the tow is crimped, it is heated at 212-302°F (100-150°C)PTFE Gaskets.Tanged Metal Reinforced Graphite Gasket.

Cutting

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

The Future

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