Polyester

Background

Pet Stick Grip Roller Tape, air, water, and petroleum. Developed in a 20th-century laboratory,Sticky Roller Mop Refill. In this reaction,Pet Hair Sticky Remover.FG53 SERIES IP65 LED TRI-PROOF LAMP.

Polyester is used in the manufacture of many products, including clothing, home furnishings,FG55 SERIES IP65 LED TRI-PROOF LAMP, computer and recording tapes, and electrical insulation.FG06 SERIES IP65 LED WATERPROOF LAMP. It does not absorb moisture, but does absorb oil;FB01A SERIES IP54 LED WATERPROOF LAMP-, soil-, and fire-FG11 SERIES IP65 LED WATERPROOF LAMP. Its low absorbency also makes it naturally resistant to stains.FB02 SERIES IP20 LED WATERPROOF LAMP,FE05 SERIES IP65 LED WATERPROOF LAMP.FLD-A SERIES IP65 LED FLOOD LIGHT, and not damaged by mildew.Flood Light, nonallergenic insulator, so the material is used for filling pillows, quilting, outerwear, and sleeping bags.

History

In 1926,FE03 SERIES IP65 LED DUSTPROOF LAMP-based E.I. du Pont de Nemours and Co.FE05 SERIES IP65 LED DUSTPROOF LAMP. This early research, headed by W.H. Carothers,FI81E 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,FI88E SERIES IP65 LED DUSTPROOF LAMP. The company conducted some further developmental work, and in 1951, began to market the fiber under the name Dacron.FI89E SERIES IP65 LED DUSTPROOF LAMP,FG03 SEREIS IP67 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.FG04 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.FG06 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,FB01A SERIES IP54 LED DUSTPROOF LAMP. In this process, ethylene is the polymer, the chemical building block of polyester,FG11 SERIES IP65 LED DUSTPROOF LAMP.

The Manufacturing
Process

Polyester is manufactured by one of several methods.FB02 SERIES IP20 LED DUSTPROOF LAMP. The four basic forms are filament,Dustproof Light, tow, and fiberfill. In the filament form,Fluorescent Tri-Proof Light, producing smooth-FE01 SERIES IP65 LED TRI-PROOF LAMP.FE03 SERIES IP65 LED TRI-PROOF LAMP, filaments are cut to short,FI81E SERIES IP65 LED TRI-PROOF LAMP.FG06 SERIES IP65 LED TRI-PROOF LAMP. 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.FB02 SERIES IP20 LED TRI-PROOF LAMP.

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-FI81 SERIES IP65 T8 LED TUBES FIXTURE,FI82 SERIES IP65 T8 LED TUBES FIXTURE, is extruded through a slot to form long ribbons.

Drying

• 3 After the polyester emerges from polymerization,FI88 SERIES IP65 T5 / T8 LED TUBES FIXTURE. 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.FI89 SERIES IP65 T8 LED TUBES FIXTURE, which are usually round,LED Tri-Proof Light. The number of holes in the spinneret determines the size of the yarn,Tri-Proof Light.
• 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,Wall Mounted LED Mirror Cabinet with Two Doors. 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 Lighted Mirror Cabinet with Single Door.
• Plastic Cylinder LED Mirror Light Lamp,Stainless Square LED Mirror Light Lamp. Also,LED Mirror Light,Oval 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 With Two Frosted Light Strips

Full Length Backlit Rectangle LED Dressing 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,Rectangle LED Dressing Mirror. The rope-Rectangle LED Makeup Mirror.

Drawing tow

• 1 Newly-Round LED Makeup Mirror With Metal Frame.Round LED Makeup Mirror.

Crimping

• 2 Drawn tow is then fed into compression boxes,LED Makeup Mirror, at a rate of 9-15 crimps per inch (3-6 per cm).Rectangle LED Bathroom Mirror With Three Touch Switch.

Setting

• 3 After the tow is crimped, it is heated at 212-302°F (100-150°C)Rectangle LED Bathroom Mirror with Multi-functions.Rectangle LED Bathroom Mirror With Top Frosted Light Strip.

Cutting

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

The Future

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