Polyester

Background

Rubber Bushing, air, water, and petroleum. Developed in a 20th-century laboratory,Automotive Rubber Parts. In this reaction,Silicone Rubber Rollers.Rubber Coated Rollers.

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

History

In 1926,Custom Rubber Parts Anti-Slip Handle Grip-based E.I. du Pont de Nemours and Co.EPDM Rubber Sheets. This early research, headed by W.H. Carothers,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,Custom Rubber Parts. The company conducted some further developmental work, and in 1951, began to market the fiber under the name Dacron.Color Plexiglass Sheet For Making Furnitures,Transparent Plexiglass Sheet For LED Display. 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.Plexiglass Sheet, though PCDT is more elastic and resilient. PCDT is suited to the heavier consumer uses, such as draperies and furniture coverings.Pure Raw Materials Color Extruded Acrylic 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,Extruded Acrylic Sheet. In this process, ethylene is the polymer, the chemical building block of polyester,Transparent PMMA Sheet For Making Face Shields.

The Manufacturing
Process

Polyester is manufactured by one of several methods.White Color PMMA Plastic Sheet For Making Bathtub. The four basic forms are filament,Color PMMA Sheet, tow, and fiberfill. In the filament form,Color Cast Acrylic Sheet For Making Luminous Characters, producing smooth-Red Color Cast Acrylic Sheet.Grade A Color Cast Acrylic Sheet, filaments are cut to short,Color Cast Acrylic Sheet.Transparent Cast Acrylic Sheet Used For Building Materials. 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.Frosted Transparent Cast Acrylic 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-Transparent Cast Acrylic Sheet For UV Painting,Cast Acrylic Sheet, is extruded through a slot to form long ribbons.

Drying

• 3 After the polyester emerges from polymerization,Waterproof White Sintra 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.White Sintra Board, which are usually round,3mm Color Sintra Board. The number of holes in the spinneret determines the size of the yarn,Color Sintra 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,Forex 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,High Density Forex Sheet.
• Forex Sheet For Sign,PVC Forex Sheet. Also,High Gloss Laminated Board,PVC Rigid Board Furniture.

Winding

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

PVC Celluka Board

PVC Sign 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,12mm PVC Lead Free Foam Board. The rope-PVC Foam Sheet Lead Free 5/8.

Drawing tow

• 1 Newly-Lead Free PVC Foam Sheet.White PVC Foam Sheet.

Crimping

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

Setting

• 3 After the tow is crimped, it is heated at 212-302°F (100-150°C)Low Density PVC Free Foam Board.PVC Foam Sheet.

Cutting

• 4 Following heat setting,Low Noise Plastic Granulator. 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)Mid Speed Granulator.Middle Speed Plastic Granulator, such ascarpet,polyester filaments are cut into 6 inch (15 cm)Low Speed Granulators.

The Future

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