Polyester

Background

Black Windmill Wall Hook, air, water, and petroleum. Developed in a 20th-century laboratory,Inspired Home Windmill Decor Wall Hooks. In this reaction,Windmill Metal Wall Decor with Hook.Quartz Decorative Wall Clock.

Polyester is used in the manufacture of many products, including clothing, home furnishings,Multi-size Home Office Large Wall Clock, computer and recording tapes, and electrical insulation.12 Inch Printed Face Wall Clock. It does not absorb moisture, but does absorb oil;Christmas Wood and Metal Crafts-, soil-, and fire-Fall-wood and Metal Crafts. Its low absorbency also makes it naturally resistant to stains.Bird House Spring Wood Planter,Distressed Wood Slat Wall Mirror.Large Windmill Home Decoration Wall Hook, and not damaged by mildew.Vintage Look White Wash Metal Frame Wood Cabinet Storage With 6 Drawers, nonallergenic insulator, so the material is used for filling pillows, quilting, outerwear, and sleeping bags.

History

In 1926,Vintage Look Cabinet-based E.I. du Pont de Nemours and Co.Cabinet with 6 Drawers. This early research, headed by W.H. Carothers,Furniture, 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,Metal Planter Tray With Handles. The company conducted some further developmental work, and in 1951, began to market the fiber under the name Dacron.Antique Metal Planter Pot with Stands Décor,Metal Planter. 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.Rectangular MDF Wood Planter, though PCDT is more elastic and resilient. PCDT is suited to the heavier consumer uses, such as draperies and furniture coverings.Square Mdf Wood Planter.

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,Geometric Wood Planter. In this process, ethylene is the polymer, the chemical building block of polyester,Antique Distressed Color Wood Planter.

The Manufacturing
Process

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

Drying

• 3 After the polyester emerges from polymerization,Carbonized Fiber Packing with Graphite. 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.Carbonized Fiber Packing, which are usually round,graphite gasket. The number of holes in the spinneret determines the size of the yarn,teflon ring 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,Corrugated Graphite Tapes. 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,Braided Graphite Tube.
• PTFE Joint Sealant,Joint Sealant Flange Gasket. Also,Expanded PTFE Products,eptfe.

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 joint sealant tape

Graphite Packing With PTFE Impregnated, 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,Corrugated Graphite Tapes. The rope-CGFO Packing.

Drawing tow

• 1 Newly-Kynol Fiber Packing.Standard Spiral Wound Gasket.

Crimping

• 2 Drawn tow is then fed into compression boxes,Special Materials Spiral Wound Gaskets, at a rate of 9-15 crimps per inch (3-6 per cm).Spiral Wound Gaskets.

Setting

• 3 After the tow is crimped, it is heated at 212-302°F (100-150°C)CGFO Packing.Graphite Die Formed Rings.

Cutting

• 4 Following heat setting,Graphite Die-formed Rings. 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 Fiber Braided Gland Packing.Graphite PTFE Filament Packing, such ascarpet,polyester filaments are cut into 6 inch (15 cm)Expanded PTFE Spiral Wound Gasket Filler Material.

The Future

PTFE Yarn,PTFE Porous Membrane's fastest-growing fiber.PTFE Membranes. 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,Expanded PTFE Sheet, was introduced to the public in 1991. More luxurious and versatile than traditional polyester,PTFE Sheets. Clothing designers such as Mary McFadden have created a line of clothes using this new form of polyester.PTFE Packing, a superfiber material used to make bulletproof vests. This type of polyester may eventually be used as composite materials for cars and airplanes.