Polyester

Background

Polyester Acoustic Panel, air, water, and petroleum. Developed in a 20th-century laboratory,Double Layer Inverted Umbrellas Reverse Folding Umbrella Windproof. In this reaction,Cartoon printing super mini 3 section rain umbrella.Cartoon Animal Children Umbrellas.

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

History

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

The Manufacturing
Process

Polyester is manufactured by one of several methods.Special Rainbow Edge Long Adult Stick Umbrella. The four basic forms are filament,Double Layer Special Adult Stick Umbrella, tow, and fiberfill. In the filament form,Automatic Long Stick Rain Umbrellas, producing smooth-Gent Folding Super Mini Manual Open Umbrella.Folding Manual Open Umbrella, filaments are cut to short,Wooden Two Folding Automatic Golf Umbrella.Folding Umbrella. 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.Natural Cork Composition Sheets.

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-Cork and Nitrile Rubber sheets,Farmhouse Large Decorative Wall Clocks, is extruded through a slot to form long ribbons.

Drying

• 3 After the polyester emerges from polymerization,Pallet Wood Barn Farmhouse Wall Clock. 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.Black Windmill Wall Hook, which are usually round,Inspired Home Windmill Decor Wall Hooks. The number of holes in the spinneret determines the size of the yarn,Windmill Metal Wall Decor with Hook.
• 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,Quartz Decorative Wall Clock. 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,Multi-size Home Office Large Wall Clock.
• 12 Inch Printed Face Wall Clock,Christmas Wood and Metal Crafts. Also,Fall-wood and Metal Crafts,Bird House Spring Wood Planter.

Winding

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

Distressed Wood Slat Wall Mirror

Large Windmill Home Decoration Wall Hook, 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,Vintage Look White Wash Metal Frame Wood Cabinet Storage With 6 Drawers. The rope-Vintage Look Cabinet.

Drawing tow

• 1 Newly-Cabinet with 6 Drawers.Furniture.

Crimping

• 2 Drawn tow is then fed into compression boxes,Metal Planter Tray With Handles, at a rate of 9-15 crimps per inch (3-6 per cm).Antique Metal Planter Pot with Stands Décor.

Setting

• 3 After the tow is crimped, it is heated at 212-302°F (100-150°C)Metal Planter.Rectangular MDF Wood Planter.

Cutting

• 4 Following heat setting,Square Mdf Wood Planter. 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)Geometric Wood Planter.Antique Distressed Color Wood Planter, such ascarpet,polyester filaments are cut into 6 inch (15 cm)Graphite PTFE Yarn.

The Future

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