Polyester

Background

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

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

History

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

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 Fish Fins. In this process, ethylene is the polymer, the chemical building block of polyester,Carbon Steel Zinc Plated Sleeve Anchor with Conical Nut and O Hook.

The Manufacturing
Process

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

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 Dust Cover,Gear Shift Lever Boot, is extruded through a slot to form long ribbons.

Drying

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

Winding

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

Anti Abrasion Rubber Bumpers

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,Square Rubber Grommets. The rope-Custom Molded Rubber Parts.

Drawing tow

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

Crimping

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

Setting

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

Cutting

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

The Future

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