Polyester

Background

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

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

History

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

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

The Manufacturing
Process

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

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 Rubber Parts Anti-Slip Handle Grip,EPDM Rubber Sheets, is extruded through a slot to form long ribbons.

Drying

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

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 Cast Acrylic Sheet For Making Luminous Characters

Red Color Cast Acrylic Sheet, 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,Grade A Color Cast Acrylic Sheet. The rope-Color Cast Acrylic Sheet.

Drawing tow

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

Crimping

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

Setting

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

Cutting

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

The Future

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