Polyester

Background

FG06 SERIES IP65 LED TRI-PROOF LAMP, air, water, and petroleum. Developed in a 20th-century laboratory,FB02 SERIES IP20 LED TRI-PROOF LAMP. In this reaction,FI81 SERIES IP65 T8 LED TUBES FIXTURE.FI82 SERIES IP65 T8 LED TUBES FIXTURE.

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

History

In 1926,LED Mirror Light-based E.I. du Pont de Nemours and Co.Oval LED Dressing Mirror. This early research, headed by W.H. Carothers,Rectangle LED Dressing Mirror With Two Frosted Light Strips, 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,Full Length Backlit Rectangle LED Dressing Mirror. The company conducted some further developmental work, and in 1951, began to market the fiber under the name Dacron.Rectangle LED Dressing Mirror,Rectangle LED Makeup 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.Round LED Makeup Mirror With Metal Frame, 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.

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,LED Makeup Mirror. In this process, ethylene is the polymer, the chemical building block of polyester,Rectangle LED Bathroom Mirror With Three Touch Switch.

The Manufacturing
Process

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

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-LED Bathroom Mirror,Perching Knife, is extruded through a slot to form long ribbons.

Drying

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

Winding

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

One-Component Epoxy Ester Primer

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

Drawing tow

• 1 Newly-Acrylic Baking Paint.Polyurethane Topcoat.

Crimping

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

Setting

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

Cutting

• 4 Following heat setting,Anti-Corrosive 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)Alkyd Enamel.Alkyd Varnish, such ascarpet,polyester filaments are cut into 6 inch (15 cm)Extra White Silver Powder Paint.

The Future

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