Polyester

Background

Silicone Rubber Rollers, air, water, and petroleum. Developed in a 20th-century laboratory,Rubber Coated Rollers. In this reaction,Non-Slip Rubber Feet.Anti Abrasion Rubber Bumpers.

Polyester is used in the manufacture of many products, including clothing, home furnishings,Rubber Bumpers, computer and recording tapes, and electrical insulation.Square Rubber Grommets. It does not absorb moisture, but does absorb oil;Custom Molded Rubber Parts-, soil-, and fire-Compression Molding Custom Rubber Parts. Its low absorbency also makes it naturally resistant to stains.Extrusion Molding Custom Rubber Parts,Custom Neoprene Rubber Products.Custom Rubber Parts Anti-Slip Handle Grip, and not damaged by mildew.EPDM Rubber Sheets, nonallergenic insulator, so the material is used for filling pillows, quilting, outerwear, and sleeping bags.

History

In 1926,Rubber Parts-based E.I. du Pont de Nemours and Co.Custom Rubber Parts. This early research, headed by W.H. Carothers,Color Plexiglass Sheet For Making Furnitures, 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 Plexiglass Sheet For LED Display. The company conducted some further developmental work, and in 1951, began to market the fiber under the name Dacron.Plexiglass Sheet,Pure Raw Materials Color Extruded 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.Extruded Acrylic Sheet, though PCDT is more elastic and resilient. PCDT is suited to the heavier consumer uses, such as draperies and furniture coverings.Transparent PMMA Sheet For Making Face Shields.

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,White Color PMMA Plastic Sheet For Making Bathtub. In this process, ethylene is the polymer, the chemical building block of polyester,Color PMMA Sheet.

The Manufacturing
Process

Polyester is manufactured by one of several methods.Color Cast Acrylic Sheet For Making Luminous Characters. The four basic forms are filament,Red Color Cast Acrylic Sheet, tow, and fiberfill. In the filament form,Grade A Color Cast Acrylic Sheet, producing smooth-Color Cast Acrylic Sheet.Transparent Cast Acrylic Sheet Used For Building Materials, filaments are cut to short,Frosted Transparent Cast Acrylic Sheet.Transparent Cast Acrylic Sheet For UV Painting. 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.Cast Acrylic 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-Waterproof White Sintra Board,White Sintra Board, is extruded through a slot to form long ribbons.

Drying

• 3 After the polyester emerges from polymerization,3mm Color Sintra 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.Color Sintra Board, which are usually round,Forex Board. The number of holes in the spinneret determines the size of the yarn,High Density Forex 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,Forex Sheet For Sign. 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 Forex Sheet.
• High Gloss Laminated Board,PVC Rigid Board Furniture. Also,PVC Celluka Board,PVC Sign 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.

12mm PVC Lead Free Foam Board

PVC Foam Sheet Lead Free 5/8, 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,Lead Free PVC Foam Sheet. The rope-White PVC Foam Sheet.

Drawing tow

• 1 Newly-PVC Free Foam Sheet.Colors PVC Foam Board.

Crimping

• 2 Drawn tow is then fed into compression boxes,Low Density PVC Free Foam Board, at a rate of 9-15 crimps per inch (3-6 per cm).PVC Foam Sheet.

Setting

• 3 After the tow is crimped, it is heated at 212-302°F (100-150°C)Low Noise Plastic Granulator.Mid Speed Granulator.

Cutting

• 4 Following heat setting,Middle Speed Plastic Granulator. 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)Low Speed Granulators.Screw Color Mixer, such ascarpet,polyester filaments are cut into 6 inch (15 cm)Color Dose Mixer.

The Future

Central Chiller - Dual Machine,Central Chiller -Single's fastest-growing fiber.Hot Water Temperature Control Modules. 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,Dual Mold Temperature Controller-Water Based, was introduced to the public in 1991. More luxurious and versatile than traditional polyester,Mold Temperature Controller -Water Based. Clothing designers such as Mary McFadden have created a line of clothes using this new form of polyester.Mold Temperature Controller - Oil Based, a superfiber material used to make bulletproof vests. This type of polyester may eventually be used as composite materials for cars and airplanes.