Polyester

Background

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

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

History

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

The Manufacturing
Process

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

Drying

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

Low Density PVC Free Foam Board

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

Drawing tow

• 1 Newly-Middle Speed Plastic Granulator.Low Speed Granulators.

Crimping

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

Setting

• 3 After the tow is crimped, it is heated at 212-302°F (100-150°C)Central Chiller - Dual Machine.Central Chiller -Single.

Cutting

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

The Future

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