Polyester

Background

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

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

History

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

The Manufacturing
Process

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

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 White Wash Metal Frame Wood Cabinet Storage With 6 Drawers,Vintage Look Cabinet, is extruded through a slot to form long ribbons.

Drying

• 3 After the polyester emerges from polymerization,Cabinet with 6 Drawers. 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.Furniture, which are usually round,Metal Planter Tray With Handles. The number of holes in the spinneret determines the size of the yarn,Antique Metal Planter Pot with Stands Décor.
• 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,Metal 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,Rectangular MDF Wood Planter.
• Square Mdf Wood Planter,Geometric Wood Planter. Also,Antique Distressed Color Wood Planter,Graphite PTFE 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.

Multiple PTFE Filament Yarn

PTFE Packing with Kynol Fiber Corners, 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,ASME Spiral Wound Gasket. The rope-glass-to-glass.

Drawing tow

• 1 Newly-Exhaust Spiral Wound Gaskets.Special Materials Spiral Wound Gaskets.

Crimping

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

Setting

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

Cutting

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

The Future

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