Polyester

Background

Farmhouse Large Decorative Wall Clocks, air, water, and petroleum. Developed in a 20th-century laboratory,Pallet Wood Barn Farmhouse Wall Clock. In this reaction,Black Windmill Wall Hook.Inspired Home Windmill Decor Wall Hooks.

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

History

In 1926,Large Windmill Home Decoration Wall Hook-based E.I. du Pont de Nemours and Co.Vintage Look White Wash Metal Frame Wood Cabinet Storage With 6 Drawers. This early research, headed by W.H. Carothers,Vintage Look Cabinet, 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,Cabinet with 6 Drawers. The company conducted some further developmental work, and in 1951, began to market the fiber under the name Dacron.Furniture,Metal Planter Tray With Handles. 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.Antique Metal Planter Pot with Stands Décor, though PCDT is more elastic and resilient. PCDT is suited to the heavier consumer uses, such as draperies and furniture coverings.Metal 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,Rectangular MDF Wood Planter. In this process, ethylene is the polymer, the chemical building block of polyester,Square Mdf Wood Planter.

The Manufacturing
Process

Polyester is manufactured by one of several methods.Geometric Wood Planter. The four basic forms are filament,Antique Distressed Color Wood Planter, tow, and fiberfill. In the filament form,Graphite PTFE Yarn, producing smooth-Multiple PTFE Filament Yarn.PTFE Packing with Kynol Fiber Corners, filaments are cut to short,ASME Spiral Wound Gasket.glass-to-glass. 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.Exhaust Spiral Wound Gaskets.

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-Special Materials Spiral Wound Gaskets,Nuclear Spiral Wound Gasket, 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.graphite gasket, which are usually round,Carbonized Fiber Packing with Graphite. The number of holes in the spinneret determines the size of the yarn,Carbonized Fiber Packing.
• 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 gasket. 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,teflon ring gasket.
• Corrugated Graphite Tapes,Braided Graphite Tube. Also,PTFE Joint Sealant,Joint Sealant Flange 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.

Expanded PTFE Products

eptfe, 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 joint sealant tape. The rope-Graphite Packing With PTFE Impregnated.

Drawing tow

• 1 Newly-Corrugated Graphite Tapes.CGFO Packing.

Crimping

• 2 Drawn tow is then fed into compression boxes,Kynol Fiber Packing, at a rate of 9-15 crimps per inch (3-6 per cm).Standard Spiral Wound Gasket.

Setting

• 3 After the tow is crimped, it is heated at 212-302°F (100-150°C)Special Materials Spiral Wound Gaskets.Spiral Wound Gaskets.

Cutting

• 4 Following heat setting,CGFO Packing. 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 Die Formed Rings.Graphite Die-formed Rings, such ascarpet,polyester filaments are cut into 6 inch (15 cm)Graphite Fiber Braided Gland Packing.

The Future

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