Polyester

Background

Custom Rubber Parts, air, water, and petroleum. Developed in a 20th-century laboratory,Color Plexiglass Sheet For Making Furnitures. In this reaction,Transparent Plexiglass Sheet For LED Display.Plexiglass Sheet.

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

History

In 1926,Color Cast Acrylic Sheet-based E.I. du Pont de Nemours and Co.Transparent Cast Acrylic Sheet Used For Building Materials. This early research, headed by W.H. Carothers,Frosted Transparent 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,Transparent Cast Acrylic Sheet For UV Painting. The company conducted some further developmental work, and in 1951, began to market the fiber under the name Dacron.Cast Acrylic Sheet,Waterproof White Sintra Board. 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.White Sintra Board, though PCDT is more elastic and resilient. PCDT is suited to the heavier consumer uses, such as draperies and furniture coverings.3mm Color Sintra Board.

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 Sintra Board. In this process, ethylene is the polymer, the chemical building block of polyester,Forex Board.

The Manufacturing
Process

Polyester is manufactured by one of several methods.High Density Forex Sheet. The four basic forms are filament,Forex Sheet For Sign, tow, and fiberfill. In the filament form,PVC Forex Sheet, producing smooth-High Gloss Laminated Board.PVC Rigid Board Furniture, filaments are cut to short,PVC Celluka Board.PVC Sign 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.12mm PVC Lead Free Foam 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 Foam Sheet Lead Free 5/8,Lead Free PVC Foam Sheet, is extruded through a slot to form long ribbons.

Drying

• 3 After the polyester emerges from polymerization,White PVC Foam Sheet. 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 Free Foam Sheet, which are usually round,Colors PVC Foam Board. The number of holes in the spinneret determines the size of the yarn,Low Density PVC 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. 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,Low Noise Plastic Granulator.
• Mid Speed Granulator,Middle Speed Plastic Granulator. Also,Low Speed Granulators,Screw Color Mixer.

Winding

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

Color Dose Mixer

Central Chiller - Dual Machine, 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,Central Chiller -Single. The rope-Hot Water Temperature Control Modules.

Drawing tow

• 1 Newly-Dual Mold Temperature Controller-Water Based.Mold Temperature Controller -Water Based.

Crimping

• 2 Drawn tow is then fed into compression boxes,Mold Temperature Controller - Oil Based, at a rate of 9-15 crimps per inch (3-6 per cm).One Piece Complete Autoloader.

Setting

• 3 After the tow is crimped, it is heated at 212-302°F (100-150°C)Detachable Type Autoloader.Cabinet Dryer.

Cutting

• 4 Following heat setting,Mold Dehumidifying Dryer. 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)Dehumidification Drying Feeder.Dehumidifier, such ascarpet,polyester filaments are cut into 6 inch (15 cm)Low Speed Granulators.

The Future

Low Noise Granulators,Screw Color Mixer's fastest-growing fiber.European Type Hopper Dryers. 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,Central Material Handling System. Clothing designers such as Mary McFadden have created a line of clothes using this new form of polyester.Dehumidifying and Drying Machine, a superfiber material used to make bulletproof vests. This type of polyester may eventually be used as composite materials for cars and airplanes.