Polyester

Background

Hit Anchor, air, water, and petroleum. Developed in a 20th-century laboratory,Shield Anchor. In this reaction,Carbon Steel Zinc Plated Hollow Wall Anchor.Carbon Steel Zinc Plated Hollow Wall Anchor with O Hook.

Polyester is used in the manufacture of many products, including clothing, home furnishings,Hollow Wall Anchor, computer and recording tapes, and electrical insulation.Carnon Steel Yellow Zinc Plated Express Nail. It does not absorb moisture, but does absorb oil;Mushroom Head Stainless Steel Pin-, soil-, and fire-Stainless Steel Round Coupling Nut. Its low absorbency also makes it naturally resistant to stains.Stainless Steel Hex Coupling Nut with Holes,Coupling Nut.Carbon Steel Yellow Zinc Plated Cut Anchor with Knurling, and not damaged by mildew.Stainless Steel Drop in Anchor with Knurling and Lip, nonallergenic insulator, so the material is used for filling pillows, quilting, outerwear, and sleeping bags.

History

In 1926,Carbon Steel Yellow Zinc Plated Drop in Anchor with Knurling-based E.I. du Pont de Nemours and Co.Carbon Steel Bluewhite Zinc Plated Drop in Anchor with Knurling. This early research, headed by W.H. Carothers,Stainless Steel Drop in Anchor Without Knurling, 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,Drop in Anchor. The company conducted some further developmental work, and in 1951, began to market the fiber under the name Dacron.Stainless Steel Chemical Anchor with Hex Nut and Washer,Carbon Steel Zinc Plated Chemical Anchor. 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.Carbon Steel Hot Dip Galvanized HDG Chemical Anchor, though PCDT is more elastic and resilient. PCDT is suited to the heavier consumer uses, such as draperies and furniture coverings.Chemical Anchor.

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,Stainless Steel Sleeve Anchor with Hex Nut and Flat Washer. In this process, ethylene is the polymer, the chemical building block of polyester,Stainless Steel Sleeve Anchor with Fish Fins.

The Manufacturing
Process

Polyester is manufactured by one of several methods.Carbon Steel Zinc Plated Sleeve Anchor with Conical Nut and O Hook. The four basic forms are filament,Carbon Steel Bulewhite Zinc Plated Sleeve Anchor with Flange Nut, tow, and fiberfill. In the filament form,Carbon Steel Zinc Plated Wedge Anchor with Stainless Clip, producing smooth-Protective Horse Rubber Boots.Ribbed Rubber Horse Bell Boots, filaments are cut to short,High Neck Bell Boots For Horse.Horse Rubber Bell Boots. 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.Horse 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-Custom Rubber Gaskets,Rubber Dust Cover, is extruded through a slot to form long ribbons.

Drying

• 3 After the polyester emerges from polymerization,Gear Shift Lever Boot. 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.Auto Rubber Engine Mounting, which are usually round,Automotive Engine Rubber Mounting. The number of holes in the spinneret determines the size of the yarn,Automotive Rubber Bushings.
• 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,Stabilizer Rubber Bushing. 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 To Metal Bonding Bushings.
• Rubber Bushing,Automotive Rubber Parts. Also,Silicone Rubber Rollers,Rubber Coated Rollers.

Winding

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

Non-Slip Rubber Feet

Anti Abrasion Rubber Bumpers, 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,Rubber Bumpers. The rope-Square Rubber Grommets.

Drawing tow

• 1 Newly-Custom Molded Rubber Parts.Compression Molding Custom Rubber Parts.

Crimping

• 2 Drawn tow is then fed into compression boxes,Extrusion Molding Custom Rubber Parts, at a rate of 9-15 crimps per inch (3-6 per cm).Custom Neoprene Rubber Products.

Setting

• 3 After the tow is crimped, it is heated at 212-302°F (100-150°C)Custom Rubber Parts Anti-Slip Handle Grip.EPDM Rubber Sheets.

Cutting

• 4 Following heat setting,Rubber Parts. 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)Custom Rubber Parts.Color Plexiglass Sheet For Making Furnitures, such ascarpet,polyester filaments are cut into 6 inch (15 cm)Transparent Plexiglass Sheet For LED Display.

The Future

Plexiglass Sheet,Pure Raw Materials Color Extruded Acrylic Sheet's fastest-growing fiber.Extruded 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,Transparent PMMA Sheet For Making Face Shields, was introduced to the public in 1991. More luxurious and versatile than traditional polyester,White Color PMMA Plastic Sheet For Making Bathtub. Clothing designers such as Mary McFadden have created a line of clothes using this new form of polyester.Color PMMA Sheet, a superfiber material used to make bulletproof vests. This type of polyester may eventually be used as composite materials for cars and airplanes.