Polyester

Background

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

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

History

In 1926,Automotive Engine Rubber Mounting-based E.I. du Pont de Nemours and Co.Automotive Rubber Bushings. This early research, headed by W.H. Carothers,Stabilizer Rubber Bushing, 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,Rubber To Metal Bonding Bushings. The company conducted some further developmental work, and in 1951, began to market the fiber under the name Dacron.Rubber Bushing,Automotive Rubber Parts. 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.Silicone Rubber Rollers, though PCDT is more elastic and resilient. PCDT is suited to the heavier consumer uses, such as draperies and furniture coverings.Rubber Coated 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,Non-Slip Rubber Feet. In this process, ethylene is the polymer, the chemical building block of polyester,Anti Abrasion Rubber Bumpers.

The Manufacturing
Process

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

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 Parts,Custom Rubber Parts, is extruded through a slot to form long ribbons.

Drying

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

Grade A Color Cast Acrylic Sheet

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,Transparent Cast Acrylic Sheet Used For Building Materials. The rope-Frosted Transparent Cast Acrylic Sheet.

Drawing tow

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

Crimping

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

Setting

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

Cutting

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

The Future

High Gloss Laminated Board,PVC Rigid Board Furniture's fastest-growing fiber.PVC Celluka Board. 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 Sign Board, was introduced to the public in 1991. More luxurious and versatile than traditional polyester,12mm PVC Lead Free Foam Board. Clothing designers such as Mary McFadden have created a line of clothes using this new form of polyester.PVC Foam Sheet Lead Free 5/8, a superfiber material used to make bulletproof vests. This type of polyester may eventually be used as composite materials for cars and airplanes.