Polyester

Background

POE Animal Children Umbrella, air, water, and petroleum. Developed in a 20th-century laboratory,Fiberglass Long Automatic Children Umbrella. In this reaction,POE Long Automatic Children Umbrella.EVA Print Children Umbrella.

Polyester is used in the manufacture of many products, including clothing, home furnishings,Manual Open Adult Wooden Stick Umbrella, computer and recording tapes, and electrical insulation.Rainbow Adult Stick Automatic Umbrella. It does not absorb moisture, but does absorb oil;Special Rainbow Edge Long Adult Stick Umbrella-, soil-, and fire-Double Layer Special Adult Stick Umbrella. Its low absorbency also makes it naturally resistant to stains.Automatic Long Stick Rain Umbrellas,Gent Folding Super Mini Manual Open Umbrella.Folding Manual Open Umbrella, and not damaged by mildew.Wooden Two Folding Automatic Golf Umbrella, nonallergenic insulator, so the material is used for filling pillows, quilting, outerwear, and sleeping bags.

History

In 1926,Folding Umbrella-based E.I. du Pont de Nemours and Co.Natural Cork Composition Sheets. This early research, headed by W.H. Carothers,Cork and Nitrile Rubber sheets, 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,Farmhouse Large Decorative Wall Clocks. The company conducted some further developmental work, and in 1951, began to market the fiber under the name Dacron.Pallet Wood Barn Farmhouse Wall Clock,Black Windmill Wall Hook. 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.Inspired Home Windmill Decor Wall Hooks, though PCDT is more elastic and resilient. PCDT is suited to the heavier consumer uses, such as draperies and furniture coverings.Windmill Metal Wall Decor with Hook.

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,Quartz Decorative Wall Clock. In this process, ethylene is the polymer, the chemical building block of polyester,Multi-size Home Office Large Wall Clock.

The Manufacturing
Process

Polyester is manufactured by one of several methods.12 Inch Printed Face Wall Clock. The four basic forms are filament,Christmas Wood and Metal Crafts, tow, and fiberfill. In the filament form,Fall-wood and Metal Crafts, producing smooth-Bird House Spring Wood Planter.Distressed Wood Slat Wall Mirror, filaments are cut to short,Large Windmill Home Decoration Wall Hook.Vintage Look White Wash Metal Frame Wood Cabinet Storage With 6 Drawers. 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.Vintage Look Cabinet.

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-Cabinet with 6 Drawers,Furniture, is extruded through a slot to form long ribbons.

Drying

• 3 After the polyester emerges from polymerization,Metal Planter Tray With Handles. 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.Antique Metal Planter Pot with Stands Décor, which are usually round,Metal Planter. The number of holes in the spinneret determines the size of the yarn,Rectangular MDF Wood Planter.
• 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,Square Mdf Wood Planter. 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,Geometric Wood Planter.
• Antique Distressed Color Wood Planter,Graphite PTFE Yarn. Also,Multiple PTFE Filament Yarn,PTFE Packing with Kynol Fiber Corners.

Winding

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

ASME Spiral Wound Gasket

glass-to-glass, 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,Exhaust Spiral Wound Gaskets. The rope-Special Materials Spiral Wound Gaskets.

Drawing tow

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

Crimping

• 2 Drawn tow is then fed into compression boxes,graphite gasket, at a rate of 9-15 crimps per inch (3-6 per cm).Carbonized Fiber Packing with Graphite.

Setting

• 3 After the tow is crimped, it is heated at 212-302°F (100-150°C)Carbonized Fiber Packing.graphite gasket.

Cutting

• 4 Following heat setting,teflon ring gasket. 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)Corrugated Graphite Tapes.Braided Graphite Tube, such ascarpet,polyester filaments are cut into 6 inch (15 cm)PTFE Joint Sealant.

The Future

Joint Sealant Flange Gasket,Expanded PTFE Products's fastest-growing fiber.eptfe. 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 joint sealant tape, was introduced to the public in 1991. More luxurious and versatile than traditional polyester,Graphite Packing With PTFE Impregnated. Clothing designers such as Mary McFadden have created a line of clothes using this new form of polyester.Corrugated Graphite Tapes, a superfiber material used to make bulletproof vests. This type of polyester may eventually be used as composite materials for cars and airplanes.