Polyester

Background

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

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

History

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

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,Exhaust Spiral Wound Gaskets. In this process, ethylene is the polymer, the chemical building block of polyester,Special Materials Spiral Wound Gaskets.

The Manufacturing
Process

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

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-Braided Graphite Tube,PTFE Joint Sealant, is extruded through a slot to form long ribbons.

Drying

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

Winding

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

Spiral Wound Gaskets

CGFO 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,Graphite Die Formed Rings. The rope-Graphite Die-formed Rings.

Drawing tow

• 1 Newly-Graphite Fiber Braided Gland Packing.Graphite PTFE Filament Packing.

Crimping

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

Setting

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

Cutting

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

The Future

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