Polyester

Background

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

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

History

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

The Manufacturing
Process

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

Drying

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

Transparent PMMA Sheet For Making Face Shields

White Color PMMA Plastic Sheet For Making Bathtub, 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,Color PMMA Sheet. The rope-Color Cast Acrylic Sheet For Making Luminous Characters.

Drawing tow

• 1 Newly-Red Color Cast Acrylic Sheet.Grade A Color Cast Acrylic Sheet.

Crimping

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

Setting

• 3 After the tow is crimped, it is heated at 212-302°F (100-150°C)Frosted Transparent Cast Acrylic Sheet.Transparent Cast Acrylic Sheet For UV Painting.

Cutting

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

The Future

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