Polyester

Background

Chemical Anchor, air, water, and petroleum. Developed in a 20th-century laboratory,Stainless Steel Sleeve Anchor with Hex Nut and Flat Washer. In this reaction,Stainless Steel Sleeve Anchor with Fish Fins.Carbon Steel Zinc Plated Sleeve Anchor with Conical Nut and O Hook.

Polyester is used in the manufacture of many products, including clothing, home furnishings,Carbon Steel Bulewhite Zinc Plated Sleeve Anchor with Flange Nut, computer and recording tapes, and electrical insulation.Carbon Steel Zinc Plated Wedge Anchor with Stainless Clip. It does not absorb moisture, but does absorb oil;Protective Horse Rubber Boots-, soil-, and fire-Ribbed Rubber Horse Bell Boots. Its low absorbency also makes it naturally resistant to stains.High Neck Bell Boots For Horse,Horse Rubber Bell Boots.Horse Rubber Parts, and not damaged by mildew.Custom Rubber Gaskets, nonallergenic insulator, so the material is used for filling pillows, quilting, outerwear, and sleeping bags.

History

In 1926,Rubber Dust Cover-based E.I. du Pont de Nemours and Co.Gear Shift Lever Boot. This early research, headed by W.H. Carothers,Auto Rubber Engine Mounting, 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,Automotive Engine Rubber Mounting. The company conducted some further developmental work, and in 1951, began to market the fiber under the name Dacron.Automotive Rubber Bushings,Stabilizer Rubber Bushing. 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.Rubber To Metal Bonding Bushings, though PCDT is more elastic and resilient. PCDT is suited to the heavier consumer uses, such as draperies and furniture coverings.Rubber Bushing.

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,Automotive Rubber Parts. In this process, ethylene is the polymer, the chemical building block of polyester,Silicone Rubber Rollers.

The Manufacturing
Process

Polyester is manufactured by one of several methods.Rubber Coated Rollers. The four basic forms are filament,Non-Slip Rubber Feet, tow, and fiberfill. In the filament form,Anti Abrasion Rubber Bumpers, producing smooth-Rubber Bumpers.Square Rubber Grommets, filaments are cut to short,Custom Molded Rubber Parts.Compression Molding Custom Rubber Parts. 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.Extrusion Molding Custom Rubber Parts.

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-Custom Neoprene Rubber Products,Custom Rubber Parts Anti-Slip Handle Grip, is extruded through a slot to form long ribbons.

Drying

• 3 After the polyester emerges from polymerization,EPDM Rubber Sheets. 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.Rubber Parts, which are usually round,Custom Rubber Parts. The number of holes in the spinneret determines the size of the yarn,Color Plexiglass Sheet For Making Furnitures.
• 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,Transparent Plexiglass Sheet For LED Display. 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,Plexiglass Sheet.
• Pure Raw Materials Color Extruded Acrylic Sheet,Extruded Acrylic Sheet. Also,Transparent PMMA Sheet For Making Face Shields,White Color PMMA Plastic Sheet For Making Bathtub.

Winding

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

Color PMMA Sheet

Color Cast Acrylic Sheet For Making Luminous Characters, 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,Red Color Cast Acrylic Sheet. The rope-Grade A Color Cast Acrylic Sheet.

Drawing tow

• 1 Newly-Color Cast Acrylic Sheet.Transparent Cast Acrylic Sheet Used For Building Materials.

Crimping

• 2 Drawn tow is then fed into compression boxes,Frosted Transparent Cast Acrylic Sheet, at a rate of 9-15 crimps per inch (3-6 per cm).Transparent Cast Acrylic Sheet For UV Painting.

Setting

• 3 After the tow is crimped, it is heated at 212-302°F (100-150°C)Cast Acrylic Sheet.Waterproof White Sintra Board.

Cutting

• 4 Following heat setting,White Sintra Board. 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)3mm Color Sintra Board.Color Sintra Board, such ascarpet,polyester filaments are cut into 6 inch (15 cm)Forex Board.

The Future

High Density Forex Sheet,Forex Sheet For Sign's fastest-growing fiber.PVC Forex Sheet. 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,High Gloss Laminated Board, was introduced to the public in 1991. More luxurious and versatile than traditional polyester,PVC Rigid Board Furniture. Clothing designers such as Mary McFadden have created a line of clothes using this new form of polyester.PVC Celluka Board, a superfiber material used to make bulletproof vests. This type of polyester may eventually be used as composite materials for cars and airplanes.