Polyester

Background

FI89 SERIES IP65 T8 LED TUBES FIXTURE, air, water, and petroleum. Developed in a 20th-century laboratory,LED Tri-Proof Light. In this reaction,Tri-Proof Light.Wall Mounted LED Mirror Cabinet with Two Doors.

Polyester is used in the manufacture of many products, including clothing, home furnishings,LED Lighted Mirror Cabinet with Single Door, computer and recording tapes, and electrical insulation.Plastic Cylinder LED Mirror Light Lamp. It does not absorb moisture, but does absorb oil;Stainless Square LED Mirror Light Lamp-, soil-, and fire-LED Mirror Light. Its low absorbency also makes it naturally resistant to stains.Oval LED Dressing Mirror,Rectangle LED Dressing Mirror With Two Frosted Light Strips.Full Length Backlit Rectangle LED Dressing Mirror, and not damaged by mildew.Rectangle LED Dressing Mirror, nonallergenic insulator, so the material is used for filling pillows, quilting, outerwear, and sleeping bags.

History

In 1926,Rectangle LED Makeup Mirror-based E.I. du Pont de Nemours and Co.Round LED Makeup Mirror With Metal Frame. This early research, headed by W.H. Carothers,Round LED Makeup Mirror, 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,LED Makeup Mirror. The company conducted some further developmental work, and in 1951, began to market the fiber under the name Dacron.Rectangle LED Bathroom Mirror With Three Touch Switch,Rectangle LED Bathroom Mirror with Multi-functions. 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.Rectangle LED Bathroom Mirror With Top Frosted Light Strip, though PCDT is more elastic and resilient. PCDT is suited to the heavier consumer uses, such as draperies and furniture coverings.Rectangle LED Bathroom Mirror Both Vertical And Horizental.

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,Rectangle LED Bathroom Mirror With Aluminum Frame. In this process, ethylene is the polymer, the chemical building block of polyester,Frameless Rectangle LED Bathroom Mirror.

The Manufacturing
Process

Polyester is manufactured by one of several methods.Round LED Bathroom Mirror With Single Touch. The four basic forms are filament,Round LED Bathroom Mirror With Aluminum Frame, tow, and fiberfill. In the filament form,Frameless Round LED Bathroom Mirror, producing smooth-LED Bathroom Mirror.Perching Knife, filaments are cut to short,Dry Abrasive Paper.Pig Hair Brush. 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.Putty Powder.

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-Old Powder,Other Paints and Coatings, is extruded through a slot to form long ribbons.

Drying

• 3 After the polyester emerges from polymerization,Ordinary Exterior Wall Paint. 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.Elastic Anti-Cracking Exterior Wall Paint, which are usually round,Ordinary Exterior Wall Coating. The number of holes in the spinneret determines the size of the yarn,Ordinary Interior Wall Paint.
• 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,Anti-Alkali Primer. 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,One-Component Epoxy Ester Primer.
• Various Color Epoxy Anticorrosive Topcoat,Epoxy Paint. Also,One-Component Acrylic Topcoat,Acrylic Baking Paint.

Winding

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

Polyurethane Topcoat

Polyurethane Baking Paint, 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,Polyurethane Varnish. The rope-Polyurethane Orange Grain Paint.

Drawing tow

• 1 Newly-Chlorinated Rubber Anticorrosive Topcoat.Anti-Corrosive Paint.

Crimping

• 2 Drawn tow is then fed into compression boxes,Alkyd Enamel, at a rate of 9-15 crimps per inch (3-6 per cm).Alkyd Varnish.

Setting

• 3 After the tow is crimped, it is heated at 212-302°F (100-150°C)Extra White Silver Powder Paint.Gray Steel Structure Special Topcoat.

Cutting

• 4 Following heat setting,Alkyd Paint. 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)Oil Based Paint.China Expanded PTFE Sheet Supplier, such ascarpet,polyester filaments are cut into 6 inch (15 cm)China Expanded PTFE Sheet Manufacture.

The Future

Full Automatic Spiral Wound Gasket Winding Machine,china cheap Spiral wound gaskets's fastest-growing fiber.BX Ring Joint Gasket. 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,china RX Ring Joint Gasket supplier, was introduced to the public in 1991. More luxurious and versatile than traditional polyester,RX Ring Joint Gasket. Clothing designers such as Mary McFadden have created a line of clothes using this new form of polyester.china cheap PTFE Gaskets, a superfiber material used to make bulletproof vests. This type of polyester may eventually be used as composite materials for cars and airplanes.