Polyester

Background

Polyester Fiber Felt, air, water, and petroleum. Developed in a 20th-century laboratory,Eco Friendly Wall Panel. In this reaction,Decorative Sound Polyester Fiber Acoustic Panels.Polyester Soundproofing Acoustic Panel.

Polyester is used in the manufacture of many products, including clothing, home furnishings,Printed Polyester Fiber Acoustic Panel, computer and recording tapes, and electrical insulation.Soundproof Polyester Fiber Acoustic Panels. It does not absorb moisture, but does absorb oil;Polyester Acoustic Panel-, soil-, and fire-Double Layer Inverted Umbrellas Reverse Folding Umbrella Windproof. Its low absorbency also makes it naturally resistant to stains.Cartoon printing super mini 3 section rain umbrella,Cartoon Animal Children Umbrellas.Inverted Umbrella Double Layer Reverse Windproof, and not damaged by mildew.Kids Clear And Transparent POE Umbrella, nonallergenic insulator, so the material is used for filling pillows, quilting, outerwear, and sleeping bags.

History

In 1926,POE Animal Children Kids Umbrella-based E.I. du Pont de Nemours and Co.Long Clear POE Rain Umbrella. This early research, headed by W.H. Carothers,POE Rain 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,Portable Pocket Super Mini 3 Section Rain Umbrella. The company conducted some further developmental work, and in 1951, began to market the fiber under the name Dacron.Cartoon Printing Super Mini 3 section Rain Umbrella,Black Compact Super Mini 3 Section Rain 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.Super Mini Umbrella, though PCDT is more elastic and resilient. PCDT is suited to the heavier consumer uses, such as draperies and furniture coverings.Promotional Manual Open Golf 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 Golf Umbrella. In this process, ethylene is the polymer, the chemical building block of polyester,Polyester Fabric Animal Children Umbrella.

The Manufacturing
Process

Polyester is manufactured by one of several methods.POE Animal Children Umbrella. The four basic forms are filament,Fiberglass Long Automatic Children Umbrella, tow, and fiberfill. In the filament form,POE Long Automatic Children Umbrella, producing smooth-EVA Print Children Umbrella.Manual Open Adult Wooden Stick Umbrella, filaments are cut to short,Rainbow Adult Stick Automatic Umbrella.Special Rainbow Edge Long Adult Stick 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.Double Layer Special Adult Stick Umbrella.

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-Automatic Long Stick Rain Umbrellas,Gent Folding Super Mini Manual Open Umbrella, is extruded through a slot to form long ribbons.

Drying

• 3 After the polyester emerges from polymerization,Folding Manual Open Umbrella. 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.Wooden Two Folding Automatic Golf Umbrella, which are usually round,Folding Umbrella. The number of holes in the spinneret determines the size of the yarn,Natural Cork Composition Sheets.
• 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,Cork and Nitrile Rubber sheets. 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,Farmhouse Large Decorative Wall Clocks.
• Pallet Wood Barn Farmhouse Wall Clock,Black Windmill Wall Hook. Also,Inspired Home Windmill Decor Wall Hooks,Windmill Metal Wall Decor with Hook.

Winding

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

Quartz Decorative Wall Clock

Multi-size Home Office Large Wall Clock, 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,12 Inch Printed Face Wall Clock. The rope-Christmas Wood and Metal Crafts.

Drawing tow

• 1 Newly-Fall-wood and Metal Crafts.Bird House Spring Wood Planter.

Crimping

• 2 Drawn tow is then fed into compression boxes,Distressed Wood Slat Wall Mirror, at a rate of 9-15 crimps per inch (3-6 per cm).Large Windmill Home Decoration Wall Hook.

Setting

• 3 After the tow is crimped, it is heated at 212-302°F (100-150°C)Vintage Look White Wash Metal Frame Wood Cabinet Storage With 6 Drawers.Vintage Look Cabinet.

Cutting

• 4 Following heat setting,Cabinet with 6 Drawers. 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)Furniture.Metal Planter Tray With Handles, such ascarpet,polyester filaments are cut into 6 inch (15 cm)Antique Metal Planter Pot with Stands Décor.

The Future

Metal Planter,Rectangular MDF Wood Planter's fastest-growing fiber.Square Mdf Wood Planter. 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,Geometric Wood Planter, was introduced to the public in 1991. More luxurious and versatile than traditional polyester,Antique Distressed Color Wood Planter. Clothing designers such as Mary McFadden have created a line of clothes using this new form of polyester.Graphite PTFE Yarn, a superfiber material used to make bulletproof vests. This type of polyester may eventually be used as composite materials for cars and airplanes.