Polyester

Background

Custom Neoprene Rubber Products, air, water, and petroleum. Developed in a 20th-century laboratory,Custom Rubber Parts Anti-Slip Handle Grip. In this reaction,EPDM Rubber Sheets.Rubber Parts.

Polyester is used in the manufacture of many products, including clothing, home furnishings,Custom Rubber Parts, computer and recording tapes, and electrical insulation.Color Plexiglass Sheet For Making Furnitures. It does not absorb moisture, but does absorb oil;Transparent Plexiglass Sheet For LED Display-, soil-, and fire-Plexiglass Sheet. Its low absorbency also makes it naturally resistant to stains.Pure Raw Materials Color Extruded Acrylic Sheet,Extruded Acrylic Sheet.Transparent PMMA Sheet For Making Face Shields, and not damaged by mildew.White Color PMMA Plastic Sheet For Making Bathtub, nonallergenic insulator, so the material is used for filling pillows, quilting, outerwear, and sleeping bags.

History

In 1926,Color PMMA Sheet-based E.I. du Pont de Nemours and Co.Color Cast Acrylic Sheet For Making Luminous Characters. This early research, headed by W.H. Carothers,Red Color Cast 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,Grade A Color Cast Acrylic Sheet. The company conducted some further developmental work, and in 1951, began to market the fiber under the name Dacron.Color Cast Acrylic Sheet,Transparent Cast Acrylic Sheet Used For Building Materials. 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.Frosted Transparent Cast Acrylic Sheet, though PCDT is more elastic and resilient. PCDT is suited to the heavier consumer uses, such as draperies and furniture coverings.Transparent Cast Acrylic Sheet For UV Painting.

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,Cast Acrylic Sheet. In this process, ethylene is the polymer, the chemical building block of polyester,Waterproof White Sintra Board.

The Manufacturing
Process

Polyester is manufactured by one of several methods.White Sintra Board. The four basic forms are filament,3mm Color Sintra Board, tow, and fiberfill. In the filament form,Color Sintra Board, producing smooth-Forex Board.High Density Forex Sheet, filaments are cut to short,Forex Sheet For Sign.PVC Forex 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.High Gloss Laminated 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-PVC Rigid Board Furniture,PVC Celluka Board, is extruded through a slot to form long ribbons.

Drying

• 3 After the polyester emerges from polymerization,PVC Sign 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.12mm PVC Lead Free Foam Board, which are usually round,PVC Foam Sheet Lead Free 5/8. The number of holes in the spinneret determines the size of the yarn,Lead Free PVC Foam 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,White PVC Foam 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,PVC Free Foam Sheet.
• Colors PVC Foam Board,Low Density PVC Free Foam Board. Also,PVC Foam Sheet,Low Noise Plastic Granulator.

Winding

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

Mid Speed Granulator

Middle Speed Plastic Granulator, 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,Low Speed Granulators. The rope-Screw Color Mixer.

Drawing tow

• 1 Newly-Color Dose Mixer.Central Chiller - Dual Machine.

Crimping

• 2 Drawn tow is then fed into compression boxes,Central Chiller -Single, at a rate of 9-15 crimps per inch (3-6 per cm).Hot Water Temperature Control Modules.

Setting

• 3 After the tow is crimped, it is heated at 212-302°F (100-150°C)Dual Mold Temperature Controller-Water Based.Mold Temperature Controller -Water Based.

Cutting

• 4 Following heat setting,Mold Temperature Controller - Oil Based. 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)One Piece Complete Autoloader.Detachable Type Autoloader, such ascarpet,polyester filaments are cut into 6 inch (15 cm)Cabinet Dryer.

The Future

Mold Dehumidifying Dryer,Dehumidification Drying Feeder's fastest-growing fiber.Dehumidifier. 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,Low Speed Granulators, was introduced to the public in 1991. More luxurious and versatile than traditional polyester,Low Noise Granulators. Clothing designers such as Mary McFadden have created a line of clothes using this new form of polyester.Screw Color Mixer, a superfiber material used to make bulletproof vests. This type of polyester may eventually be used as composite materials for cars and airplanes.