Polyester

Background

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

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

History

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

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

The Manufacturing
Process

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

Drying

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

Lead Free 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,White PVC Foam Sheet. The rope-PVC Free Foam Sheet.

Drawing tow

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

Crimping

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

Setting

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

Cutting

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

The Future

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