Polyester

Background

Anti Abrasion Rubber Bumpers, air, water, and petroleum. Developed in a 20th-century laboratory,Rubber Bumpers. In this reaction,Square Rubber Grommets.Custom Molded Rubber Parts.

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

History

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

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,Red Color Cast Acrylic Sheet. In this process, ethylene is the polymer, the chemical building block of polyester,Grade A Color Cast Acrylic Sheet.

The Manufacturing
Process

Polyester is manufactured by one of several methods.Color Cast Acrylic Sheet. The four basic forms are filament,Transparent Cast Acrylic Sheet Used For Building Materials, tow, and fiberfill. In the filament form,Frosted Transparent Cast Acrylic Sheet, producing smooth-Transparent Cast Acrylic Sheet For UV Painting.Cast Acrylic Sheet, filaments are cut to short,Waterproof White Sintra Board.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.3mm Color 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-Color Sintra Board,Forex Board, is extruded through a slot to form long ribbons.

Drying

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

White PVC Foam Sheet

PVC Free 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,Colors PVC Foam Board. The rope-Low Density PVC Free Foam Board.

Drawing tow

• 1 Newly-PVC Foam Sheet.Low Noise Plastic Granulator.

Crimping

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

Setting

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

Cutting

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

The Future

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