Polyester

Background

Color Plexiglass Sheet For Making Furnitures, air, water, and petroleum. Developed in a 20th-century laboratory,Transparent Plexiglass Sheet For LED Display. In this reaction,Plexiglass Sheet.Pure Raw Materials Color Extruded Acrylic Sheet.

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

History

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

The Manufacturing
Process

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

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-Lead Free PVC Foam Sheet,White PVC Foam Sheet, is extruded through a slot to form long ribbons.

Drying

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

Central Chiller - Dual Machine

Central Chiller -Single, 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,Hot Water Temperature Control Modules. The rope-Dual Mold Temperature Controller-Water Based.

Drawing tow

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

Crimping

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

Setting

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

Cutting

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

The Future

Screw Color Mixer,European Type Hopper Dryers'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,Central Material Handling System, was introduced to the public in 1991. More luxurious and versatile than traditional polyester,Dehumidifying and Drying Machine. Clothing designers such as Mary McFadden have created a line of clothes using this new form of polyester.NZK Vacuum Dryer, a superfiber material used to make bulletproof vests. This type of polyester may eventually be used as composite materials for cars and airplanes.