Polyester

Background

Stainless Steel Sleeve Anchor with Fish Fins, air, water, and petroleum. Developed in a 20th-century laboratory,Carbon Steel Zinc Plated Sleeve Anchor with Conical Nut and O Hook. In this reaction,Carbon Steel Bulewhite Zinc Plated Sleeve Anchor with Flange Nut.Carbon Steel Zinc Plated Wedge Anchor with Stainless Clip.

Polyester is used in the manufacture of many products, including clothing, home furnishings,Protective Horse Rubber Boots, computer and recording tapes, and electrical insulation.Ribbed Rubber Horse Bell Boots. It does not absorb moisture, but does absorb oil;High Neck Bell Boots For Horse-, soil-, and fire-Horse Rubber Bell Boots. Its low absorbency also makes it naturally resistant to stains.Horse Rubber Parts,Custom Rubber Gaskets.Rubber Dust Cover, and not damaged by mildew.Gear Shift Lever Boot, nonallergenic insulator, so the material is used for filling pillows, quilting, outerwear, and sleeping bags.

History

In 1926,Auto Rubber Engine Mounting-based E.I. du Pont de Nemours and Co.Automotive Engine Rubber Mounting. This early research, headed by W.H. Carothers,Automotive Rubber Bushings, 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,Stabilizer Rubber Bushing. The company conducted some further developmental work, and in 1951, began to market the fiber under the name Dacron.Rubber To Metal Bonding Bushings,Rubber Bushing. 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 Parts, though PCDT is more elastic and resilient. PCDT is suited to the heavier consumer uses, such as draperies and furniture coverings.Silicone Rubber Rollers.

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 Coated Rollers. In this process, ethylene is the polymer, the chemical building block of polyester,Non-Slip Rubber Feet.

The Manufacturing
Process

Polyester is manufactured by one of several methods.Anti Abrasion Rubber Bumpers. The four basic forms are filament,Rubber Bumpers, tow, and fiberfill. In the filament form,Square Rubber Grommets, producing smooth-Custom Molded Rubber Parts.Compression Molding Custom Rubber Parts, filaments are cut to short,Extrusion Molding Custom Rubber Parts.Custom Neoprene Rubber Products. 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 Parts Anti-Slip Handle Grip.

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-EPDM Rubber Sheets,Rubber Parts, is extruded through a slot to form long ribbons.

Drying

• 3 After the polyester emerges from polymerization,Custom 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.Color Plexiglass Sheet For Making Furnitures, which are usually round,Transparent Plexiglass Sheet For LED Display. The number of holes in the spinneret determines the size of the yarn,Plexiglass Sheet.
• 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,Pure Raw Materials Color Extruded Acrylic Sheet. 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,Extruded Acrylic Sheet.
• Transparent PMMA Sheet For Making Face Shields,White Color PMMA Plastic Sheet For Making Bathtub. Also,Color PMMA Sheet,Color Cast Acrylic Sheet For Making Luminous Characters.

Winding

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

Red Color Cast Acrylic Sheet

Grade A Color Cast 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,Color Cast Acrylic Sheet. The rope-Transparent Cast Acrylic Sheet Used For Building Materials.

Drawing tow

• 1 Newly-Frosted Transparent Cast Acrylic Sheet.Transparent Cast Acrylic Sheet For UV Painting.

Crimping

• 2 Drawn tow is then fed into compression boxes,Cast Acrylic Sheet, at a rate of 9-15 crimps per inch (3-6 per cm).Waterproof White Sintra Board.

Setting

• 3 After the tow is crimped, it is heated at 212-302°F (100-150°C)White Sintra Board.3mm Color Sintra Board.

Cutting

• 4 Following heat setting,Color Sintra Board. 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)Forex Board.High Density Forex Sheet, such ascarpet,polyester filaments are cut into 6 inch (15 cm)Forex Sheet For Sign.

The Future

PVC Forex Sheet,High Gloss Laminated Board's fastest-growing fiber.PVC Rigid Board Furniture. 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,PVC Celluka Board, was introduced to the public in 1991. More luxurious and versatile than traditional polyester,PVC Sign Board. Clothing designers such as Mary McFadden have created a line of clothes using this new form of polyester.12mm PVC Lead Free Foam Board, a superfiber material used to make bulletproof vests. This type of polyester may eventually be used as composite materials for cars and airplanes.