Polyester

Background

Stainless Steel Drop in Anchor with Knurling and Lip, air, water, and petroleum. Developed in a 20th-century laboratory,Carbon Steel Yellow Zinc Plated Drop in Anchor with Knurling. In this reaction,Carbon Steel Bluewhite Zinc Plated Drop in Anchor with Knurling.Stainless Steel Drop in Anchor Without Knurling.

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

History

In 1926,Carbon Steel Bulewhite Zinc Plated Sleeve Anchor with Flange Nut-based E.I. du Pont de Nemours and Co.Carbon Steel Zinc Plated Wedge Anchor with Stainless Clip. This early research, headed by W.H. Carothers,Protective Horse Rubber 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,Ribbed Rubber Horse Bell Boots. The company conducted some further developmental work, and in 1951, began to market the fiber under the name Dacron.High Neck Bell Boots For Horse,Horse Rubber Bell Boots. 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.Horse Rubber Parts, though PCDT is more elastic and resilient. PCDT is suited to the heavier consumer uses, such as draperies and furniture coverings.Custom Rubber Gaskets.

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,Rubber Dust Cover. In this process, ethylene is the polymer, the chemical building block of polyester,Gear Shift Lever Boot.

The Manufacturing
Process

Polyester is manufactured by one of several methods.Auto Rubber Engine Mounting. The four basic forms are filament,Automotive Engine Rubber Mounting, tow, and fiberfill. In the filament form,Automotive Rubber Bushings, producing smooth-Stabilizer Rubber Bushing.Rubber To Metal Bonding Bushings, filaments are cut to short,Rubber Bushing.Automotive 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.Silicone Rubber Rollers.

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 Coated Rollers,Non-Slip Rubber Feet, is extruded through a slot to form long ribbons.

Drying

• 3 After the polyester emerges from polymerization,Anti Abrasion Rubber Bumpers. 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 Bumpers, which are usually round,Square Rubber Grommets. The number of holes in the spinneret determines the size of the yarn,Custom Molded Rubber Parts.
• 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,Compression Molding Custom Rubber Parts. 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,Extrusion Molding Custom Rubber Parts.
• Custom Neoprene Rubber Products,Custom Rubber Parts Anti-Slip Handle Grip. Also,EPDM Rubber Sheets,Rubber Parts.

Winding

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

Custom Rubber Parts

Color Plexiglass Sheet For Making Furnitures, 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 Plexiglass Sheet For LED Display. The rope-Plexiglass Sheet.

Drawing tow

• 1 Newly-Pure Raw Materials Color Extruded Acrylic Sheet.Extruded Acrylic Sheet.

Crimping

• 2 Drawn tow is then fed into compression boxes,Transparent PMMA Sheet For Making Face Shields, at a rate of 9-15 crimps per inch (3-6 per cm).White Color PMMA Plastic Sheet For Making Bathtub.

Setting

• 3 After the tow is crimped, it is heated at 212-302°F (100-150°C)Color PMMA Sheet.Color Cast Acrylic Sheet For Making Luminous Characters.

Cutting

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

The Future

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