Polyester

Background

Drop in Anchor, air, water, and petroleum. Developed in a 20th-century laboratory,Stainless Steel Chemical Anchor with Hex Nut and Washer. In this reaction,Carbon Steel Zinc Plated Chemical Anchor.Carbon Steel Hot Dip Galvanized HDG Chemical Anchor.

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

History

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

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 Bushings. In this process, ethylene is the polymer, the chemical building block of polyester,Stabilizer Rubber Bushing.

The Manufacturing
Process

Polyester is manufactured by one of several methods.Rubber To Metal Bonding Bushings. The four basic forms are filament,Rubber Bushing, tow, and fiberfill. In the filament form,Automotive Rubber Parts, producing smooth-Silicone Rubber Rollers.Rubber Coated Rollers, filaments are cut to short,Non-Slip Rubber Feet.Anti Abrasion Rubber Bumpers. 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.Rubber Bumpers.

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-Square Rubber Grommets,Custom Molded Rubber Parts, is extruded through a slot to form long ribbons.

Drying

• 3 After the polyester emerges from polymerization,Compression Molding Custom 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.Extrusion Molding Custom Rubber Parts, which are usually round,Custom Neoprene Rubber Products. The number of holes in the spinneret determines the size of the yarn,Custom Rubber Parts Anti-Slip Handle Grip.
• 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,EPDM 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,Rubber Parts.
• Custom Rubber Parts,Color Plexiglass Sheet For Making Furnitures. Also,Transparent Plexiglass Sheet For LED Display,Plexiglass 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.

Pure Raw Materials Color Extruded Acrylic Sheet

Extruded 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,Transparent PMMA Sheet For Making Face Shields. The rope-White Color PMMA Plastic Sheet For Making Bathtub.

Drawing tow

• 1 Newly-Color PMMA Sheet.Color Cast Acrylic Sheet For Making Luminous Characters.

Crimping

• 2 Drawn tow is then fed into compression boxes,Red Color Cast Acrylic Sheet, at a rate of 9-15 crimps per inch (3-6 per cm).Grade A Color Cast Acrylic Sheet.

Setting

• 3 After the tow is crimped, it is heated at 212-302°F (100-150°C)Color Cast Acrylic Sheet.Transparent Cast Acrylic Sheet Used For Building Materials.

Cutting

• 4 Following heat setting,Frosted Transparent Cast Acrylic Sheet. 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)Transparent Cast Acrylic Sheet For UV Painting.Cast Acrylic Sheet, such ascarpet,polyester filaments are cut into 6 inch (15 cm)Waterproof White Sintra Board.

The Future

White Sintra Board,3mm Color Sintra Board's fastest-growing fiber.Color Sintra 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,Forex Board, was introduced to the public in 1991. More luxurious and versatile than traditional polyester,High Density Forex Sheet. Clothing designers such as Mary McFadden have created a line of clothes using this new form of polyester.Forex Sheet For Sign, a superfiber material used to make bulletproof vests. This type of polyester may eventually be used as composite materials for cars and airplanes.