Polyester

Background

FB01A SERIES IP54 LED DUSTPROOF LAMP, air, water, and petroleum. Developed in a 20th-century laboratory,FG11 SERIES IP65 LED DUSTPROOF LAMP. In this reaction,FB02 SERIES IP20 LED DUSTPROOF LAMP.Dustproof Light.

Polyester is used in the manufacture of many products, including clothing, home furnishings,Fluorescent Tri-Proof Light, computer and recording tapes, and electrical insulation.FE01 SERIES IP65 LED TRI-PROOF LAMP. It does not absorb moisture, but does absorb oil;FE03 SERIES IP65 LED TRI-PROOF LAMP-, soil-, and fire-FI81E SERIES IP65 LED TRI-PROOF LAMP. Its low absorbency also makes it naturally resistant to stains.FG06 SERIES IP65 LED TRI-PROOF LAMP,FB02 SERIES IP20 LED TRI-PROOF LAMP.FI81 SERIES IP65 T8 LED TUBES FIXTURE, and not damaged by mildew.FI82 SERIES IP65 T8 LED TUBES FIXTURE, nonallergenic insulator, so the material is used for filling pillows, quilting, outerwear, and sleeping bags.

History

In 1926,FI88 SERIES IP65 T5 / T8 LED TUBES FIXTURE-based E.I. du Pont de Nemours and Co.FI89 SERIES IP65 T8 LED TUBES FIXTURE. This early research, headed by W.H. Carothers,LED Tri-Proof Light, 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,Tri-Proof Light. The company conducted some further developmental work, and in 1951, began to market the fiber under the name Dacron.Wall Mounted LED Mirror Cabinet with Two Doors,LED Lighted Mirror Cabinet with Single Door. 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.Plastic Cylinder LED Mirror Light Lamp, though PCDT is more elastic and resilient. PCDT is suited to the heavier consumer uses, such as draperies and furniture coverings.Stainless Square LED Mirror Light Lamp.

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 Mirror Light. In this process, ethylene is the polymer, the chemical building block of polyester,Oval LED Dressing Mirror.

The Manufacturing
Process

Polyester is manufactured by one of several methods.Rectangle LED Dressing Mirror With Two Frosted Light Strips. The four basic forms are filament,Full Length Backlit Rectangle LED Dressing Mirror, tow, and fiberfill. In the filament form,Rectangle LED Dressing Mirror, producing smooth-Rectangle LED Makeup Mirror.Round LED Makeup Mirror With Metal Frame, filaments are cut to short,Round LED Makeup Mirror.LED Makeup Mirror. 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 Three Touch Switch.

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 with Multi-functions,Rectangle LED Bathroom Mirror With Top Frosted Light Strip, is extruded through a slot to form long ribbons.

Drying

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

Winding

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

Putty Powder

Old Powder, 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,Other Paints and Coatings. The rope-Ordinary Exterior Wall Paint.

Drawing tow

• 1 Newly-Elastic Anti-Cracking Exterior Wall Paint.Ordinary Exterior Wall Coating.

Crimping

• 2 Drawn tow is then fed into compression boxes,Ordinary Interior Wall Paint, at a rate of 9-15 crimps per inch (3-6 per cm).Anti-Alkali Primer.

Setting

• 3 After the tow is crimped, it is heated at 212-302°F (100-150°C)One-Component Epoxy Ester Primer.Various Color Epoxy Anticorrosive Topcoat.

Cutting

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

The Future

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