Polyester

Background

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

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

History

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

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,Windmill Metal Wall Decor with Hook. In this process, ethylene is the polymer, the chemical building block of polyester,Quartz Decorative Wall Clock.

The Manufacturing
Process

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

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

Drying

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

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 Packing with Kynol Fiber Corners

ASME Spiral Wound Gasket, 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,glass-to-glass. The rope-Exhaust Spiral Wound Gaskets.

Drawing tow

• 1 Newly-Special Materials Spiral Wound Gaskets.Nuclear Spiral Wound Gasket.

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).graphite gasket.

Setting

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

Cutting

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

The Future

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