Polyester

Background

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

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

History

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

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

The Manufacturing
Process

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

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

Drying

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

Color Sintra Board

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

Drawing tow

• 1 Newly-PVC Forex Sheet.High Gloss Laminated Board.

Crimping

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

Setting

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

Cutting

• 4 Following heat setting,PVC Foam Sheet Lead Free 5/8. 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)Lead Free PVC Foam Sheet.White PVC Foam Sheet, such ascarpet,polyester filaments are cut into 6 inch (15 cm)PVC Free Foam Sheet.

The Future

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