Polyester

Background

FI81E SERIES IP65 LED TRI-PROOF LAMP, air, water, and petroleum. Developed in a 20th-century laboratory,FG06 SERIES IP65 LED TRI-PROOF LAMP. In this reaction,FB02 SERIES IP20 LED TRI-PROOF LAMP.FI81 SERIES IP65 T8 LED TUBES FIXTURE.

Polyester is used in the manufacture of many products, including clothing, home furnishings,FI82 SERIES IP65 T8 LED TUBES FIXTURE, computer and recording tapes, and electrical insulation.FI88 SERIES IP65 T5 / T8 LED TUBES FIXTURE. It does not absorb moisture, but does absorb oil;FI89 SERIES IP65 T8 LED TUBES FIXTURE-, soil-, and fire-LED Tri-Proof Light. Its low absorbency also makes it naturally resistant to stains.Tri-Proof Light,Wall Mounted LED Mirror Cabinet with Two Doors.LED Lighted Mirror Cabinet with Single Door, and not damaged by mildew.Plastic Cylinder LED Mirror Light Lamp, nonallergenic insulator, so the material is used for filling pillows, quilting, outerwear, and sleeping bags.

History

In 1926,Stainless Square LED Mirror Light Lamp-based E.I. du Pont de Nemours and Co.LED Mirror Light. This early research, headed by W.H. Carothers,Oval LED Dressing 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,Rectangle LED Dressing Mirror With Two Frosted Light Strips. The company conducted some further developmental work, and in 1951, began to market the fiber under the name Dacron.Full Length Backlit Rectangle LED Dressing Mirror,Rectangle LED Dressing Mirror. 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 Makeup Mirror, though PCDT is more elastic and resilient. PCDT is suited to the heavier consumer uses, such as draperies and furniture coverings.Round LED Makeup Mirror With Metal Frame.

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,Round LED Makeup Mirror. In this process, ethylene is the polymer, the chemical building block of polyester,LED Makeup Mirror.

The Manufacturing
Process

Polyester is manufactured by one of several methods.Rectangle LED Bathroom Mirror With Three Touch Switch. The four basic forms are filament,Rectangle LED Bathroom Mirror with Multi-functions, tow, and fiberfill. In the filament form,Rectangle LED Bathroom Mirror With Top Frosted Light Strip, producing smooth-Rectangle LED Bathroom Mirror Both Vertical And Horizental.Rectangle LED Bathroom Mirror With Aluminum Frame, filaments are cut to short,Frameless Rectangle LED Bathroom Mirror.Round LED Bathroom Mirror With Single Touch. 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.Round LED Bathroom Mirror With Aluminum Frame.

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-Frameless Round LED Bathroom Mirror,LED Bathroom Mirror, is extruded through a slot to form long ribbons.

Drying

• 3 After the polyester emerges from polymerization,Perching Knife. 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.Dry Abrasive Paper, which are usually round,Pig Hair Brush. The number of holes in the spinneret determines the size of the yarn,Putty Powder.
• 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,Old Powder. 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,Other Paints and Coatings.
• Ordinary Exterior Wall Paint,Elastic Anti-Cracking Exterior Wall Paint. Also,Ordinary Exterior Wall Coating,Ordinary Interior Wall 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.

Anti-Alkali Primer

One-Component Epoxy Ester Primer, 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,Various Color Epoxy Anticorrosive Topcoat. The rope-Epoxy Paint.

Drawing tow

• 1 Newly-One-Component Acrylic Topcoat.Acrylic Baking Paint.

Crimping

• 2 Drawn tow is then fed into compression boxes,Polyurethane Topcoat, at a rate of 9-15 crimps per inch (3-6 per cm).Polyurethane Baking Paint.

Setting

• 3 After the tow is crimped, it is heated at 212-302°F (100-150°C)Polyurethane Varnish.Polyurethane Orange Grain Paint.

Cutting

• 4 Following heat setting,Chlorinated Rubber Anticorrosive Topcoat. 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)Anti-Corrosive Paint.Alkyd Enamel, such ascarpet,polyester filaments are cut into 6 inch (15 cm)Alkyd Varnish.

The Future

Extra White Silver Powder Paint,Gray Steel Structure Special Topcoat's fastest-growing fiber.Alkyd Paint. 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,Oil Based Paint, was introduced to the public in 1991. More luxurious and versatile than traditional polyester,China Expanded PTFE Sheet Supplier. Clothing designers such as Mary McFadden have created a line of clothes using this new form of polyester.China Expanded PTFE Sheet Manufacture, a superfiber material used to make bulletproof vests. This type of polyester may eventually be used as composite materials for cars and airplanes.