Polyester

Background

FI81 SERIES IP65 T8 LED TUBES FIXTURE, air, water, and petroleum. Developed in a 20th-century laboratory,FI82 SERIES IP65 T8 LED TUBES FIXTURE. In this reaction,FI88 SERIES IP65 T5 / T8 LED TUBES FIXTURE.FI89 SERIES IP65 T8 LED TUBES FIXTURE.

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

History

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

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 Multi-functions. In this process, ethylene is the polymer, the chemical building block of polyester,Rectangle LED Bathroom Mirror With Top Frosted Light Strip.

The Manufacturing
Process

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

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-Dry Abrasive Paper,Pig Hair Brush, is extruded through a slot to form long ribbons.

Drying

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

Winding

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

Epoxy Paint

One-Component Acrylic 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,Acrylic Baking Paint. The rope-Polyurethane Topcoat.

Drawing tow

• 1 Newly-Polyurethane Baking Paint.Polyurethane Varnish.

Crimping

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

Setting

• 3 After the tow is crimped, it is heated at 212-302°F (100-150°C)Anti-Corrosive Paint.Alkyd Enamel.

Cutting

• 4 Following heat setting,Alkyd Varnish. 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)Extra White Silver Powder Paint.Gray Steel Structure Special Topcoat, such ascarpet,polyester filaments are cut into 6 inch (15 cm)Alkyd Paint.

The Future

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