Polyester

Background

Cartoon Animal Children Umbrellas, air, water, and petroleum. Developed in a 20th-century laboratory,Inverted Umbrella Double Layer Reverse Windproof. In this reaction,Kids Clear And Transparent POE Umbrella.POE Animal Children Kids Umbrella.

Polyester is used in the manufacture of many products, including clothing, home furnishings,Long Clear POE Rain Umbrella, computer and recording tapes, and electrical insulation.POE Rain Umbrella. It does not absorb moisture, but does absorb oil;Portable Pocket Super Mini 3 Section Rain Umbrella-, soil-, and fire-Cartoon Printing Super Mini 3 section Rain Umbrella. Its low absorbency also makes it naturally resistant to stains.Black Compact Super Mini 3 Section Rain Umbrella,Super Mini Umbrella.Promotional Manual Open Golf Umbrella, and not damaged by mildew.Manual Open Golf Umbrella, nonallergenic insulator, so the material is used for filling pillows, quilting, outerwear, and sleeping bags.

History

In 1926,Polyester Fabric Animal Children Umbrella-based E.I. du Pont de Nemours and Co.POE Animal Children Umbrella. This early research, headed by W.H. Carothers,Fiberglass Long Automatic Children 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,POE Long Automatic Children Umbrella. The company conducted some further developmental work, and in 1951, began to market the fiber under the name Dacron.EVA Print Children Umbrella,Manual Open Adult Wooden Stick Umbrella. 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.Rainbow Adult Stick Automatic Umbrella, though PCDT is more elastic and resilient. PCDT is suited to the heavier consumer uses, such as draperies and furniture coverings.Special Rainbow Edge Long Adult Stick Umbrella.

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,Double Layer Special Adult Stick Umbrella. In this process, ethylene is the polymer, the chemical building block of polyester,Automatic Long Stick Rain Umbrellas.

The Manufacturing
Process

Polyester is manufactured by one of several methods.Gent Folding Super Mini Manual Open Umbrella. The four basic forms are filament,Folding Manual Open Umbrella, tow, and fiberfill. In the filament form,Wooden Two Folding Automatic Golf Umbrella, producing smooth-Folding Umbrella.Natural Cork Composition Sheets, filaments are cut to short,Cork and Nitrile Rubber sheets.Farmhouse Large Decorative Wall Clocks. 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.Pallet Wood Barn Farmhouse Wall Clock.

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-Black Windmill Wall Hook,Inspired Home Windmill Decor Wall Hooks, is extruded through a slot to form long ribbons.

Drying

• 3 After the polyester emerges from polymerization,Windmill Metal Wall Decor with Hook. 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.Quartz Decorative Wall Clock, which are usually round,Multi-size Home Office Large Wall Clock. The number of holes in the spinneret determines the size of the yarn,12 Inch Printed Face Wall Clock.
• 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,Christmas Wood and Metal Crafts. 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,Fall-wood and Metal Crafts.
• Bird House Spring Wood Planter,Distressed Wood Slat Wall Mirror. Also,Large Windmill Home Decoration Wall Hook,Vintage Look White Wash Metal Frame Wood Cabinet Storage With 6 Drawers.

Winding

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

Vintage Look Cabinet

Cabinet with 6 Drawers, 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,Furniture. The rope-Metal Planter Tray With Handles.

Drawing tow

• 1 Newly-Antique Metal Planter Pot with Stands Décor.Metal Planter.

Crimping

• 2 Drawn tow is then fed into compression boxes,Rectangular MDF Wood Planter, at a rate of 9-15 crimps per inch (3-6 per cm).Square Mdf Wood Planter.

Setting

• 3 After the tow is crimped, it is heated at 212-302°F (100-150°C)Geometric Wood Planter.Antique Distressed Color Wood Planter.

Cutting

• 4 Following heat setting,Graphite PTFE Yarn. 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)Multiple PTFE Filament Yarn.PTFE Packing with Kynol Fiber Corners, such ascarpet,polyester filaments are cut into 6 inch (15 cm)ASME Spiral Wound Gasket.

The Future

glass-to-glass,Exhaust Spiral Wound Gaskets's fastest-growing fiber.Special Materials Spiral Wound Gaskets. 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,Nuclear Spiral Wound Gasket, was introduced to the public in 1991. More luxurious and versatile than traditional polyester,Kynol Fiber Packing. Clothing designers such as Mary McFadden have created a line of clothes using this new form of polyester.graphite gasket, a superfiber material used to make bulletproof vests. This type of polyester may eventually be used as composite materials for cars and airplanes.