Polyester

Background

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

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

History

In 1926,Transparent PMMA Sheet For Making Face Shields-based E.I. du Pont de Nemours and Co.White Color PMMA Plastic Sheet For Making Bathtub. This early research, headed by W.H. Carothers,Color PMMA 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,Color Cast Acrylic Sheet For Making Luminous Characters. The company conducted some further developmental work, and in 1951, began to market the fiber under the name Dacron.Red Color Cast Acrylic Sheet,Grade A Color Cast 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.Color 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 Used For Building Materials.

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,Frosted Transparent Cast Acrylic Sheet. In this process, ethylene is the polymer, the chemical building block of polyester,Transparent Cast Acrylic Sheet For UV Painting.

The Manufacturing
Process

Polyester is manufactured by one of several methods.Cast Acrylic Sheet. The four basic forms are filament,Waterproof White Sintra Board, tow, and fiberfill. In the filament form,White Sintra Board, producing smooth-3mm Color Sintra Board.Color Sintra Board, filaments are cut to short,Forex Board.High Density 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.Forex Sheet For Sign.

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 Forex Sheet,High Gloss Laminated Board, is extruded through a slot to form long ribbons.

Drying

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

Low Noise 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,Mid Speed Granulator. The rope-Middle Speed Plastic Granulator.

Drawing tow

• 1 Newly-Low Speed Granulators.Screw Color Mixer.

Crimping

• 2 Drawn tow is then fed into compression boxes,Color Dose Mixer, at a rate of 9-15 crimps per inch (3-6 per cm).Central Chiller - Dual Machine.

Setting

• 3 After the tow is crimped, it is heated at 212-302°F (100-150°C)Central Chiller -Single.Hot Water Temperature Control Modules.

Cutting

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

The Future

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