Polyester

Background

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

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

History

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

The Manufacturing
Process

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

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 Celluka Board,PVC Sign Board, is extruded through a slot to form long ribbons.

Drying

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

Winding

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

Middle Speed Plastic Granulator

Low Speed Granulators, 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,Screw Color Mixer. The rope-Color Dose Mixer.

Drawing tow

• 1 Newly-Central Chiller - Dual Machine.Central Chiller -Single.

Crimping

• 2 Drawn tow is then fed into compression boxes,Hot Water Temperature Control Modules, at a rate of 9-15 crimps per inch (3-6 per cm).Dual Mold Temperature Controller-Water Based.

Setting

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

Cutting

• 4 Following heat setting,One Piece Complete Autoloader. 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)Detachable Type Autoloader.Cabinet Dryer, such ascarpet,polyester filaments are cut into 6 inch (15 cm)Mold Dehumidifying Dryer.

The Future

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