Polyester

Background

Christmas Wood and Metal Crafts, air, water, and petroleum. Developed in a 20th-century laboratory,Fall-wood and Metal Crafts. In this reaction,Bird House Spring Wood Planter.Distressed Wood Slat Wall Mirror.

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

History

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

The Manufacturing
Process

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

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,Braided Graphite Tube, is extruded through a slot to form long ribbons.

Drying

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

Winding

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

Special Materials Spiral Wound Gaskets

Spiral Wound Gaskets, 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,CGFO Packing. The rope-Graphite Die Formed Rings.

Drawing tow

• 1 Newly-Graphite Die-formed Rings.Graphite Fiber Braided Gland Packing.

Crimping

• 2 Drawn tow is then fed into compression boxes,Graphite PTFE Filament Packing, at a rate of 9-15 crimps per inch (3-6 per cm).Expanded PTFE Spiral Wound Gasket Filler Material.

Setting

• 3 After the tow is crimped, it is heated at 212-302°F (100-150°C)PTFE Yarn.PTFE Porous Membrane.

Cutting

• 4 Following heat setting,PTFE Membranes. 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 Sheet.PTFE Sheets, such ascarpet,polyester filaments are cut into 6 inch (15 cm)PTFE Packing.

The Future

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