Polyester

Background

FB02 SERIES IP20 LED DUSTPROOF LAMP, air, water, and petroleum. Developed in a 20th-century laboratory,Dustproof Light. In this reaction,Fluorescent Tri-Proof Light.FE01 SERIES IP65 LED TRI-PROOF LAMP.

Polyester is used in the manufacture of many products, including clothing, home furnishings,FE03 SERIES IP65 LED TRI-PROOF LAMP, computer and recording tapes, and electrical insulation.FI81E SERIES IP65 LED TRI-PROOF LAMP. It does not absorb moisture, but does absorb oil;FG06 SERIES IP65 LED TRI-PROOF LAMP-, soil-, and fire-FB02 SERIES IP20 LED TRI-PROOF LAMP. Its low absorbency also makes it naturally resistant to stains.FI81 SERIES IP65 T8 LED TUBES FIXTURE,FI82 SERIES IP65 T8 LED TUBES FIXTURE.FI88 SERIES IP65 T5 / T8 LED TUBES FIXTURE, and not damaged by mildew.FI89 SERIES IP65 T8 LED TUBES FIXTURE, nonallergenic insulator, so the material is used for filling pillows, quilting, outerwear, and sleeping bags.

History

In 1926,LED Tri-Proof Light-based E.I. du Pont de Nemours and Co.Tri-Proof Light. This early research, headed by W.H. Carothers,Wall Mounted LED Mirror Cabinet with Two Doors, 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 Lighted Mirror Cabinet with Single Door. The company conducted some further developmental work, and in 1951, began to market the fiber under the name Dacron.Plastic Cylinder LED Mirror Light Lamp,Stainless Square LED Mirror Light Lamp. 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.LED Mirror Light, though PCDT is more elastic and resilient. PCDT is suited to the heavier consumer uses, such as draperies and furniture coverings.Oval LED Dressing 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,Rectangle LED Dressing Mirror With Two Frosted Light Strips. In this process, ethylene is the polymer, the chemical building block of polyester,Full Length Backlit Rectangle LED Dressing Mirror.

The Manufacturing
Process

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

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-Rectangle LED Bathroom Mirror Both Vertical And Horizental,Rectangle LED Bathroom Mirror With Aluminum Frame, is extruded through a slot to form long ribbons.

Drying

• 3 After the polyester emerges from polymerization,Frameless Rectangle LED Bathroom Mirror. 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.Round LED Bathroom Mirror With Single Touch, which are usually round,Round LED Bathroom Mirror With Aluminum Frame. The number of holes in the spinneret determines the size of the yarn,Frameless Round LED Bathroom Mirror.
• 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,LED Bathroom Mirror. 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,Perching Knife.
• Dry Abrasive Paper,Pig Hair Brush. Also,Putty Powder,Old Powder.

Winding

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

Other Paints and Coatings

Ordinary Exterior Wall 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,Elastic Anti-Cracking Exterior Wall Paint. The rope-Ordinary Exterior Wall Coating.

Drawing tow

• 1 Newly-Ordinary Interior Wall Paint.Anti-Alkali Primer.

Crimping

• 2 Drawn tow is then fed into compression boxes,One-Component Epoxy Ester Primer, at a rate of 9-15 crimps per inch (3-6 per cm).Various Color Epoxy Anticorrosive Topcoat.

Setting

• 3 After the tow is crimped, it is heated at 212-302°F (100-150°C)Epoxy Paint.One-Component Acrylic Topcoat.

Cutting

• 4 Following heat setting,Acrylic Baking 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)Polyurethane Topcoat.Polyurethane Baking Paint, such ascarpet,polyester filaments are cut into 6 inch (15 cm)Polyurethane Varnish.

The Future

Polyurethane Orange Grain Paint,Chlorinated Rubber Anticorrosive Topcoat's fastest-growing fiber.Anti-Corrosive 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,Alkyd Enamel, was introduced to the public in 1991. More luxurious and versatile than traditional polyester,Alkyd Varnish. Clothing designers such as Mary McFadden have created a line of clothes using this new form of polyester.Extra White Silver Powder Paint, a superfiber material used to make bulletproof vests. This type of polyester may eventually be used as composite materials for cars and airplanes.