Polyester

Background

Stainless Steel Drop in Anchor Without Knurling, air, water, and petroleum. Developed in a 20th-century laboratory,Drop in Anchor. In this reaction,Stainless Steel Chemical Anchor with Hex Nut and Washer.Carbon Steel Zinc Plated Chemical Anchor.

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

History

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

The Manufacturing
Process

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

Drying

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

Winding

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

Plexiglass Sheet

Pure Raw Materials Color 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,Extruded Acrylic Sheet. The rope-Transparent PMMA Sheet For Making Face Shields.

Drawing tow

• 1 Newly-White Color PMMA Plastic Sheet For Making Bathtub.Color PMMA Sheet.

Crimping

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

Setting

• 3 After the tow is crimped, it is heated at 212-302°F (100-150°C)Grade A Color Cast Acrylic Sheet.Color Cast Acrylic Sheet.

Cutting

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

The Future

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