Polyester

Background

FG53 SERIES IP65 LED TRI-PROOF LAMP, air, water, and petroleum. Developed in a 20th-century laboratory,FG55 SERIES IP65 LED TRI-PROOF LAMP. In this reaction,FG06 SERIES IP65 LED WATERPROOF LAMP.FB01A SERIES IP54 LED WATERPROOF LAMP.

Polyester is used in the manufacture of many products, including clothing, home furnishings,FG11 SERIES IP65 LED WATERPROOF LAMP, computer and recording tapes, and electrical insulation.FB02 SERIES IP20 LED WATERPROOF LAMP. It does not absorb moisture, but does absorb oil;FE05 SERIES IP65 LED WATERPROOF LAMP-, soil-, and fire-FLD-A SERIES IP65 LED FLOOD LIGHT. Its low absorbency also makes it naturally resistant to stains.Flood Light,FE03 SERIES IP65 LED DUSTPROOF LAMP.FE05 SERIES IP65 LED DUSTPROOF LAMP, and not damaged by mildew.FI81E SERIES IP65 LED DUSTPROOF LAMP, nonallergenic insulator, so the material is used for filling pillows, quilting, outerwear, and sleeping bags.

History

In 1926,FI88E SERIES IP65 LED DUSTPROOF LAMP-based E.I. du Pont de Nemours and Co.FI89E SERIES IP65 LED DUSTPROOF LAMP. This early research, headed by W.H. Carothers,FG03 SEREIS IP67 LED DUSTPROOF LAMP, 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,FG04 SERIES IP65 LED DUSTPROOF LAMP. The company conducted some further developmental work, and in 1951, began to market the fiber under the name Dacron.FG06 SERIES IP65 LED DUSTPROOF LAMP,FB01A SERIES IP54 LED DUSTPROOF 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.FG11 SERIES IP65 LED DUSTPROOF LAMP, though PCDT is more elastic and resilient. PCDT is suited to the heavier consumer uses, such as draperies and furniture coverings.FB02 SERIES IP20 LED DUSTPROOF 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,Dustproof Light. In this process, ethylene is the polymer, the chemical building block of polyester,Fluorescent Tri-Proof Light.

The Manufacturing
Process

Polyester is manufactured by one of several methods.FE01 SERIES IP65 LED TRI-PROOF LAMP. The four basic forms are filament,FE03 SERIES IP65 LED TRI-PROOF LAMP, tow, and fiberfill. In the filament form,FI81E SERIES IP65 LED TRI-PROOF LAMP, producing smooth-FG06 SERIES IP65 LED TRI-PROOF LAMP.FB02 SERIES IP20 LED TRI-PROOF LAMP, filaments are cut to short,FI81 SERIES IP65 T8 LED TUBES FIXTURE.FI82 SERIES IP65 T8 LED TUBES FIXTURE. 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.FI88 SERIES IP65 T5 / T8 LED TUBES FIXTURE.

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-FI89 SERIES IP65 T8 LED TUBES FIXTURE,LED Tri-Proof Light, is extruded through a slot to form long ribbons.

Drying

• 3 After the polyester emerges from polymerization,Tri-Proof Light. 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.Wall Mounted LED Mirror Cabinet with Two Doors, which are usually round,LED Lighted Mirror Cabinet with Single Door. The number of holes in the spinneret determines the size of the yarn,Plastic Cylinder LED Mirror Light Lamp.
• 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,Stainless Square LED Mirror Light Lamp. 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,LED Mirror Light.
• Oval LED Dressing Mirror,Rectangle LED Dressing Mirror With Two Frosted Light Strips. Also,Full Length Backlit Rectangle LED Dressing Mirror,Rectangle LED Dressing Mirror.

Winding

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

Rectangle LED Makeup Mirror

Round LED Makeup Mirror With Metal Frame, 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,Round LED Makeup Mirror. The rope-LED Makeup Mirror.

Drawing tow

• 1 Newly-Rectangle LED Bathroom Mirror With Three Touch Switch.Rectangle LED Bathroom Mirror with Multi-functions.

Crimping

• 2 Drawn tow is then fed into compression boxes,Rectangle LED Bathroom Mirror With Top Frosted Light Strip, at a rate of 9-15 crimps per inch (3-6 per cm).Rectangle LED Bathroom Mirror Both Vertical And Horizental.

Setting

• 3 After the tow is crimped, it is heated at 212-302°F (100-150°C)Rectangle LED Bathroom Mirror With Aluminum Frame.Frameless Rectangle LED Bathroom Mirror.

Cutting

• 4 Following heat setting,Round LED Bathroom Mirror With Single Touch. 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)Round LED Bathroom Mirror With Aluminum Frame.Frameless Round LED Bathroom Mirror, such ascarpet,polyester filaments are cut into 6 inch (15 cm)LED Bathroom Mirror.

The Future

Perching Knife,Dry Abrasive Paper's fastest-growing fiber.Pig Hair Brush. 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,Putty Powder, was introduced to the public in 1991. More luxurious and versatile than traditional polyester,Old Powder. Clothing designers such as Mary McFadden have created a line of clothes using this new form of polyester.Other Paints and Coatings, a superfiber material used to make bulletproof vests. This type of polyester may eventually be used as composite materials for cars and airplanes.