Polyester

Background

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

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

History

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

The Manufacturing
Process

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

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-Cast Acrylic Sheet,Waterproof White Sintra Board, is extruded through a slot to form long ribbons.

Drying

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

PVC Sign Board

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

Drawing tow

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

Crimping

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

Setting

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

Cutting

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

The Future

Color Dose Mixer,Central Chiller - Dual Machine's fastest-growing fiber.Central Chiller -Single. 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,Hot Water Temperature Control Modules, was introduced to the public in 1991. More luxurious and versatile than traditional polyester,Dual Mold Temperature Controller-Water Based. Clothing designers such as Mary McFadden have created a line of clothes using this new form of polyester.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.