Polyester

Background

Carbon Steel Yellow Zinc Plated Drop in Anchor with Knurling, air, water, and petroleum. Developed in a 20th-century laboratory,Carbon Steel Bluewhite Zinc Plated Drop in Anchor with Knurling. In this reaction,Stainless Steel Drop in Anchor Without Knurling.Drop in Anchor.

Polyester is used in the manufacture of many products, including clothing, home furnishings,Stainless Steel Chemical Anchor with Hex Nut and Washer, computer and recording tapes, and electrical insulation.Carbon Steel Zinc Plated Chemical Anchor. It does not absorb moisture, but does absorb oil;Carbon Steel Hot Dip Galvanized HDG Chemical Anchor-, soil-, and fire-Chemical Anchor. Its low absorbency also makes it naturally resistant to stains.Stainless Steel Sleeve Anchor with Hex Nut and Flat Washer,Stainless Steel Sleeve Anchor with Fish Fins.Carbon Steel Zinc Plated Sleeve Anchor with Conical Nut and O Hook, and not damaged by mildew.Carbon Steel Bulewhite Zinc Plated Sleeve Anchor with Flange Nut, nonallergenic insulator, so the material is used for filling pillows, quilting, outerwear, and sleeping bags.

History

In 1926,Carbon Steel Zinc Plated Wedge Anchor with Stainless Clip-based E.I. du Pont de Nemours and Co.Protective Horse Rubber Boots. This early research, headed by W.H. Carothers,Ribbed Rubber Horse Bell Boots, 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,High Neck Bell Boots For Horse. The company conducted some further developmental work, and in 1951, began to market the fiber under the name Dacron.Horse Rubber Bell Boots,Horse Rubber Parts. 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.Custom Rubber Gaskets, though PCDT is more elastic and resilient. PCDT is suited to the heavier consumer uses, such as draperies and furniture coverings.Rubber Dust Cover.

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,Gear Shift Lever Boot. In this process, ethylene is the polymer, the chemical building block of polyester,Auto Rubber Engine Mounting.

The Manufacturing
Process

Polyester is manufactured by one of several methods.Automotive Engine Rubber Mounting. The four basic forms are filament,Automotive Rubber Bushings, tow, and fiberfill. In the filament form,Stabilizer Rubber Bushing, producing smooth-Rubber To Metal Bonding Bushings.Rubber Bushing, filaments are cut to short,Automotive Rubber Parts.Silicone Rubber Rollers. 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.Rubber Coated Rollers.

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-Non-Slip Rubber Feet,Anti Abrasion Rubber Bumpers, is extruded through a slot to form long ribbons.

Drying

• 3 After the polyester emerges from polymerization,Rubber Bumpers. 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.Square Rubber Grommets, which are usually round,Custom Molded Rubber Parts. The number of holes in the spinneret determines the size of the yarn,Compression Molding Custom Rubber Parts.
• 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,Extrusion Molding Custom Rubber Parts. 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,Custom Neoprene Rubber Products.
• Custom Rubber Parts Anti-Slip Handle Grip,EPDM Rubber Sheets. Also,Rubber Parts,Custom Rubber Parts.

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 Plexiglass Sheet For Making Furnitures

Transparent Plexiglass Sheet For LED Display, 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,Plexiglass Sheet. The rope-Pure Raw Materials Color Extruded Acrylic Sheet.

Drawing tow

• 1 Newly-Extruded Acrylic Sheet.Transparent PMMA Sheet For Making Face Shields.

Crimping

• 2 Drawn tow is then fed into compression boxes,White Color PMMA Plastic Sheet For Making Bathtub, at a rate of 9-15 crimps per inch (3-6 per cm).Color PMMA Sheet.

Setting

• 3 After the tow is crimped, it is heated at 212-302°F (100-150°C)Color Cast Acrylic Sheet For Making Luminous Characters.Red Color Cast Acrylic Sheet.

Cutting

• 4 Following heat setting,Grade A Color Cast Acrylic Sheet. 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)Color Cast Acrylic Sheet.Transparent Cast Acrylic Sheet Used For Building Materials, such ascarpet,polyester filaments are cut into 6 inch (15 cm)Frosted Transparent Cast Acrylic Sheet.

The Future

Transparent Cast Acrylic Sheet For UV Painting,Cast Acrylic Sheet's fastest-growing fiber.Waterproof White Sintra Board. 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,White Sintra Board, was introduced to the public in 1991. More luxurious and versatile than traditional polyester,3mm Color Sintra Board. Clothing designers such as Mary McFadden have created a line of clothes using this new form of polyester.Color Sintra Board, a superfiber material used to make bulletproof vests. This type of polyester may eventually be used as composite materials for cars and airplanes.