Polyester

Background

10.1 Inch Windows 2 In 1 Tablet PC, air, water, and petroleum. Developed in a 20th-century laboratory,13.3 Inch Windows 2 In 1 Tablet PC. In this reaction,10.1 Inch 4G Android 2 In 1 Tablet PC.Android 2 in 1 Tablet PC.

Polyester is used in the manufacture of many products, including clothing, home furnishings,2 In 1 Tablet PC, computer and recording tapes, and electrical insulation.Android 7 Inch Rugged Tablet PC. It does not absorb moisture, but does absorb oil;Android 8 Inch Rugged Tablet PC-, soil-, and fire-Android 10.1 Inch Rugged Tablet PC. Its low absorbency also makes it naturally resistant to stains.Windows 10.1 Inch Rugged Tablet PC,11.6 Inch Surface Windows 2 In 1 Tablet PC.8 Inch Windows 10 education Tablet PC Z8350 1280X800 2GB Ram 64 Rom, and not damaged by mildew.Windows Intel Tablet PC, nonallergenic insulator, so the material is used for filling pillows, quilting, outerwear, and sleeping bags.

History

In 1926,10.1 Inch MTK6762 Octa Core CPU Android 4G LTE Tablet PC-based E.I. du Pont de Nemours and Co.10.1 Inch MT6739 CPU Android 4G LTE Tablet PC. This early research, headed by W.H. Carothers,10.1 Inch SC9832 CPU Android 4G LTE Tablet PC, 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 1946,7 Inch SC7731E CPU Android 3G Tablet PC. The company conducted some further developmental work, and in 1951, began to market the fiber under the name Dacron.7 Inch MTK8321 CPU Android 3G Tablet PC,8 Inch MTK6580 CPU Android 3G Tablet PC. 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.8 Inch SC7731E CPU Android 3G Tablet PC, though PCDT is more elastic and resilient. PCDT is suited to the heavier consumer uses, such as draperies and furniture coverings.10.1 Inch MTK6580 CPU Android 3G Tablet PC.

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,Android 3G Tablet PC. In this process, ethylene is the polymer, the chemical building block of polyester,10 Inch MTK8168 CPU Android 10.0 OS Wifi Tablet PC.

The Manufacturing
Process

Polyester is manufactured by one of several methods.10 Inch MTK8163 CPU Android WIFI Tablet PC. The four basic forms are filament,8 Inch RK3368 CPU Android WIFI Tablet PC, tow, and fiberfill. In the filament form,7 Inch RK3326 CPU Android WIFI Tablet PC, producing smooth-Tablet PC.Lpg Thermostatic Gas Valve Insert Magnet for Commercial Kitchen, filaments are cut to short,Cooking Appliance Oven Parts Gas Geyser Magnetic Valve.Gas Safety Valve Assembly Big Solenoid. 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.Top Time Thermocouple Safety Protection Solenoid Valve.

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-Gas Solenoid Valve for Oven,Safety Control Gas Magnet Valve, is extruded through a slot to form long ribbons.

Drying

• 3 After the polyester emerges from polymerization,Gas Stove Burner Igniter Parts Magnet Unit Valve. 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.Self Pulling on Gas Solenoid Magnet Valve for All Appliances Safety Protector, which are usually round,Universal Gas Sensor Magnet Valve for Heater. The number of holes in the spinneret determines the size of the yarn,Gas Boiler Magnetic Valve for Oven.
• 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,Electoral Magnet valve. 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,Gas Fireplace Magnet Valve.
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Winding

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

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Gas Barbecue Thermocouple for Home Appliance, 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,Gas Barbecue Thermocouple for Kitchenware. The rope-Brass Wire Thermocouple Flame Sensor for Gas Oven.

Drawing tow

• 1 Newly-Flexible Thermocouple.Gas Thermocouple.

Crimping

• 2 Drawn tow is then fed into compression boxes,Thermocouple for Gas Oven, at a rate of 9-15 crimps per inch (3-6 per cm).Gas Magnet Valve for Flame Failure Device.

Setting

• 3 After the tow is crimped, it is heated at 212-302°F (100-150°C)Magnet Valve.Electromagnetic Valves.

Cutting

• 4 Following heat setting,Bottle Cap Printer Machine. 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)SMC Sheet Automatic Cutter Machine.SMC Sheet Cutting Machine, such ascarpet,polyester filaments are cut into 6 inch (15 cm)Cap assembling Machine For Add Aluminium Foil.

The Future

Flip Top Cap Assembling Machine,Press Cap Assembling Machine's fastest-growing fiber.Push Pull Cap Assembling Machine. 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,Sport Cap Assembling Machine, was introduced to the public in 1991. More luxurious and versatile than traditional polyester,Bottle Cap Assembling Machine. Clothing designers such as Mary McFadden have created a line of clothes using this new form of polyester.Auto Cap Liner Machine, a superfiber material used to make bulletproof vests. This type of polyester may eventually be used as composite materials for cars and airplanes.