Polyester

Background

Non-Slip Rubber Feet, air, water, and petroleum. Developed in a 20th-century laboratory,Anti Abrasion Rubber Bumpers. In this reaction,Rubber Bumpers.Square Rubber Grommets.

Polyester is used in the manufacture of many products, including clothing, home furnishings,Custom Molded Rubber Parts, computer and recording tapes, and electrical insulation.Compression Molding Custom Rubber Parts. It does not absorb moisture, but does absorb oil;Extrusion Molding Custom Rubber Parts-, soil-, and fire-Custom Neoprene Rubber Products. Its low absorbency also makes it naturally resistant to stains.Custom Rubber Parts Anti-Slip Handle Grip,EPDM Rubber Sheets.Rubber Parts, and not damaged by mildew.Custom Rubber Parts, nonallergenic insulator, so the material is used for filling pillows, quilting, outerwear, and sleeping bags.

History

In 1926,Color Plexiglass Sheet For Making Furnitures-based E.I. du Pont de Nemours and Co.Transparent Plexiglass Sheet For LED Display. This early research, headed by W.H. Carothers,Plexiglass Sheet, 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,Pure Raw Materials Color Extruded Acrylic Sheet. The company conducted some further developmental work, and in 1951, began to market the fiber under the name Dacron.Extruded Acrylic Sheet,Transparent PMMA Sheet For Making Face Shields. 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.White Color PMMA Plastic Sheet For Making Bathtub, though PCDT is more elastic and resilient. PCDT is suited to the heavier consumer uses, such as draperies and furniture coverings.Color PMMA Sheet.

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,Color Cast Acrylic Sheet For Making Luminous Characters. In this process, ethylene is the polymer, the chemical building block of polyester,Red Color Cast Acrylic Sheet.

The Manufacturing
Process

Polyester is manufactured by one of several methods.Grade A Color Cast Acrylic Sheet. The four basic forms are filament,Color Cast Acrylic Sheet, tow, and fiberfill. In the filament form,Transparent Cast Acrylic Sheet Used For Building Materials, producing smooth-Frosted Transparent Cast Acrylic Sheet.Transparent Cast Acrylic Sheet For UV Painting, filaments are cut to short,Cast Acrylic Sheet.Waterproof White Sintra Board. 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 Sintra Board.

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-3mm Color Sintra Board,Color Sintra Board, is extruded through a slot to form long ribbons.

Drying

• 3 After the polyester emerges from polymerization,Forex Board. 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.High Density Forex Sheet, which are usually round,Forex Sheet For Sign. The number of holes in the spinneret determines the size of the yarn,PVC Forex 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,High Gloss Laminated Board. 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,PVC Rigid Board Furniture.
• PVC Celluka Board,PVC Sign Board. Also,12mm PVC Lead Free Foam Board,PVC Foam Sheet Lead Free 5/8.

Winding

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

Lead Free PVC Foam Sheet

White PVC Foam 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,PVC Free Foam Sheet. The rope-Colors PVC Foam Board.

Drawing tow

• 1 Newly-Low Density PVC Free Foam Board.PVC Foam Sheet.

Crimping

• 2 Drawn tow is then fed into compression boxes,Low Noise Plastic Granulator, at a rate of 9-15 crimps per inch (3-6 per cm).Mid Speed Granulator.

Setting

• 3 After the tow is crimped, it is heated at 212-302°F (100-150°C)Middle Speed Plastic Granulator.Low Speed Granulators.

Cutting

• 4 Following heat setting,Screw Color Mixer. 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 Dose Mixer.Central Chiller - Dual Machine, such ascarpet,polyester filaments are cut into 6 inch (15 cm)Central Chiller -Single.

The Future

Hot Water Temperature Control Modules,Dual Mold Temperature Controller-Water Based's fastest-growing fiber.Mold Temperature Controller -Water Based. 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,Mold Temperature Controller - Oil Based, was introduced to the public in 1991. More luxurious and versatile than traditional polyester,One Piece Complete Autoloader. Clothing designers such as Mary McFadden have created a line of clothes using this new form of polyester.Detachable Type Autoloader, a superfiber material used to make bulletproof vests. This type of polyester may eventually be used as composite materials for cars and airplanes.