Polyester

Background

12 Inch Printed Face Wall Clock, air, water, and petroleum. Developed in a 20th-century laboratory,Christmas Wood and Metal Crafts. In this reaction,Fall-wood and Metal Crafts.Bird House Spring Wood Planter.

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

History

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

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,ASME Spiral Wound Gasket. In this process, ethylene is the polymer, the chemical building block of polyester,glass-to-glass.

The Manufacturing
Process

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

Drying

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

Standard Spiral Wound Gasket

Special Materials 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,Spiral Wound Gaskets. The rope-CGFO Packing.

Drawing tow

• 1 Newly-Graphite Die Formed Rings.Graphite Die-formed Rings.

Crimping

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

Setting

• 3 After the tow is crimped, it is heated at 212-302°F (100-150°C)Expanded PTFE Spiral Wound Gasket Filler Material.PTFE Yarn.

Cutting

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

The Future

PTFE Packing,Expanded PTFE Gasket's fastest-growing fiber.Pipe Thread Sealing Cord. 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,PTFE Gaskets, 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.Tanged Metal Reinforced 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.