Polyester

Background

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

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

History

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

The Manufacturing
Process

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

Drying

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

Winding

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

Low Noise Plastic Granulator

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

Drawing tow

• 1 Newly-Screw Color Mixer.Color Dose Mixer.

Crimping

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

Setting

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

Cutting

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

The Future

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