Polyester

Background

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

Polyester is used in the manufacture of many products, including clothing, home furnishings,FB01A SERIES IP54 LED WATERPROOF LAMP, computer and recording tapes, and electrical insulation.FG11 SERIES IP65 LED WATERPROOF LAMP. It does not absorb moisture, but does absorb oil;FB02 SERIES IP20 LED WATERPROOF LAMP-, soil-, and fire-FE05 SERIES IP65 LED WATERPROOF LAMP. Its low absorbency also makes it naturally resistant to stains.FLD-A SERIES IP65 LED FLOOD LIGHT,Flood Light.FE03 SERIES IP65 LED DUSTPROOF LAMP, and not damaged by mildew.FE05 SERIES IP65 LED DUSTPROOF LAMP, nonallergenic insulator, so the material is used for filling pillows, quilting, outerwear, and sleeping bags.

History

In 1926,FI81E SERIES IP65 LED DUSTPROOF LAMP-based E.I. du Pont de Nemours and Co.FI88E SERIES IP65 LED DUSTPROOF LAMP. This early research, headed by W.H. Carothers,FI89E SERIES IP65 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,FG03 SEREIS IP67 LED DUSTPROOF LAMP. The company conducted some further developmental work, and in 1951, began to market the fiber under the name Dacron.FG04 SERIES IP65 LED DUSTPROOF LAMP,FG06 SERIES IP65 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.FB01A SERIES IP54 LED DUSTPROOF LAMP, though PCDT is more elastic and resilient. PCDT is suited to the heavier consumer uses, such as draperies and furniture coverings.FG11 SERIES IP65 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,FB02 SERIES IP20 LED DUSTPROOF LAMP. In this process, ethylene is the polymer, the chemical building block of polyester,Dustproof Light.

The Manufacturing
Process

Polyester is manufactured by one of several methods.Fluorescent Tri-Proof Light. The four basic forms are filament,FE01 SERIES IP65 LED TRI-PROOF LAMP, tow, and fiberfill. In the filament form,FE03 SERIES IP65 LED TRI-PROOF LAMP, producing smooth-FI81E SERIES IP65 LED TRI-PROOF LAMP.FG06 SERIES IP65 LED TRI-PROOF LAMP, filaments are cut to short,FB02 SERIES IP20 LED TRI-PROOF LAMP.FI81 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.FI82 SERIES IP65 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-FI88 SERIES IP65 T5 / T8 LED TUBES FIXTURE,FI89 SERIES IP65 T8 LED TUBES FIXTURE, is extruded through a slot to form long ribbons.

Drying

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

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

Drawing tow

• 1 Newly-LED Makeup Mirror.Rectangle LED Bathroom Mirror With Three Touch Switch.

Crimping

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

Setting

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

Cutting

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

The Future

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