Polyester

Background

Gear Shift Lever Boot, air, water, and petroleum. Developed in a 20th-century laboratory,Auto Rubber Engine Mounting. In this reaction,Automotive Engine Rubber Mounting.Automotive Rubber Bushings.

Polyester is used in the manufacture of many products, including clothing, home furnishings,Stabilizer Rubber Bushing, computer and recording tapes, and electrical insulation.Rubber To Metal Bonding Bushings. It does not absorb moisture, but does absorb oil;Rubber Bushing-, soil-, and fire-Automotive Rubber Parts. Its low absorbency also makes it naturally resistant to stains.Silicone Rubber Rollers,Rubber Coated Rollers.Non-Slip Rubber Feet, and not damaged by mildew.Anti Abrasion Rubber Bumpers, nonallergenic insulator, so the material is used for filling pillows, quilting, outerwear, and sleeping bags.

History

In 1926,Rubber Bumpers-based E.I. du Pont de Nemours and Co.Square Rubber Grommets. This early research, headed by W.H. Carothers,Custom Molded Rubber Parts, 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,Compression Molding Custom Rubber Parts. The company conducted some further developmental work, and in 1951, began to market the fiber under the name Dacron.Extrusion Molding Custom Rubber Parts,Custom Neoprene Rubber Products. 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.Custom Rubber Parts Anti-Slip Handle Grip, though PCDT is more elastic and resilient. PCDT is suited to the heavier consumer uses, such as draperies and furniture coverings.EPDM Rubber Sheets.

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 Parts. In this process, ethylene is the polymer, the chemical building block of polyester,Custom Rubber Parts.

The Manufacturing
Process

Polyester is manufactured by one of several methods.Color Plexiglass Sheet For Making Furnitures. The four basic forms are filament,Transparent Plexiglass Sheet For LED Display, tow, and fiberfill. In the filament form,Plexiglass Sheet, producing smooth-Pure Raw Materials Color Extruded Acrylic Sheet.Extruded Acrylic Sheet, filaments are cut to short,Transparent PMMA Sheet For Making Face Shields.White Color PMMA Plastic Sheet For Making Bathtub. 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.Color PMMA Sheet.

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-Color Cast Acrylic Sheet For Making Luminous Characters,Red Color Cast Acrylic Sheet, is extruded through a slot to form long ribbons.

Drying

• 3 After the polyester emerges from polymerization,Grade A Color Cast Acrylic Sheet. 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 Cast Acrylic Sheet, which are usually round,Transparent Cast Acrylic Sheet Used For Building Materials. The number of holes in the spinneret determines the size of the yarn,Frosted Transparent Cast 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,Transparent Cast Acrylic Sheet For UV Painting. 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,Cast Acrylic Sheet.
• Waterproof White Sintra Board,White Sintra Board. Also,3mm Color Sintra Board,Color Sintra Board.

Winding

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

Forex Board

High Density Forex 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,Forex Sheet For Sign. The rope-PVC Forex Sheet.

Drawing tow

• 1 Newly-High Gloss Laminated Board.PVC Rigid Board Furniture.

Crimping

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

Setting

• 3 After the tow is crimped, it is heated at 212-302°F (100-150°C)12mm PVC Lead Free Foam Board.PVC Foam Sheet Lead Free 5/8.

Cutting

• 4 Following heat setting,Lead Free PVC Foam 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)White PVC Foam Sheet.PVC Free Foam Sheet, such ascarpet,polyester filaments are cut into 6 inch (15 cm)Colors PVC Foam Board.

The Future

Low Density PVC Free Foam Board,PVC Foam Sheet's fastest-growing fiber.Low Noise Plastic Granulator. 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,Mid Speed Granulator, was introduced to the public in 1991. More luxurious and versatile than traditional polyester,Middle Speed Plastic Granulator. Clothing designers such as Mary McFadden have created a line of clothes using this new form of polyester.Low Speed Granulators, a superfiber material used to make bulletproof vests. This type of polyester may eventually be used as composite materials for cars and airplanes.