Polyester

Background

8 Inch Educational Android Tablet PC, air, water, and petroleum. Developed in a 20th-century laboratory,7 Inch Educational Android Tablet PC. In this reaction,Educational Tablet PC.10.1 Inch Windows 2 In 1 Tablet PC.

Polyester is used in the manufacture of many products, including clothing, home furnishings,13.3 Inch Windows 2 In 1 Tablet PC, computer and recording tapes, and electrical insulation.10.1 Inch 4G Android 2 In 1 Tablet PC. It does not absorb moisture, but does absorb oil;Android 2 in 1 Tablet PC-, soil-, and fire-2 In 1 Tablet PC. Its low absorbency also makes it naturally resistant to stains.Android 7 Inch Rugged Tablet PC,Android 8 Inch Rugged Tablet PC.Android 10.1 Inch Rugged Tablet PC, and not damaged by mildew.Windows 10.1 Inch Rugged Tablet PC, nonallergenic insulator, so the material is used for filling pillows, quilting, outerwear, and sleeping bags.

History

In 1926,11.6 Inch Surface Windows 2 In 1 Tablet PC-based E.I. du Pont de Nemours and Co.8 Inch Windows 10 education Tablet PC Z8350 1280X800 2GB Ram 64 Rom. This early research, headed by W.H. Carothers,Windows Intel 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 1946,10.1 Inch MTK6762 Octa Core CPU Android 4G LTE Tablet PC. The company conducted some further developmental work, and in 1951, began to market the fiber under the name Dacron.10.1 Inch MT6739 CPU Android 4G LTE Tablet PC,10.1 Inch SC9832 CPU Android 4G LTE 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.7 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.7 Inch MTK8321 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,8 Inch MTK6580 CPU Android 3G Tablet PC. In this process, ethylene is the polymer, the chemical building block of polyester,8 Inch SC7731E CPU Android 3G Tablet PC.

The Manufacturing
Process

Polyester is manufactured by one of several methods.10.1 Inch MTK6580 CPU Android 3G Tablet PC. The four basic forms are filament,Android 3G Tablet PC, tow, and fiberfill. In the filament form,10 Inch MTK8168 CPU Android 10.0 OS Wifi Tablet PC, producing smooth-10 Inch MTK8163 CPU Android WIFI Tablet PC.8 Inch RK3368 CPU Android WIFI Tablet PC, filaments are cut to short,7 Inch RK3326 CPU Android WIFI Tablet PC.Tablet PC. 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.Lpg Thermostatic Gas Valve Insert Magnet for Commercial Kitchen.

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-Cooking Appliance Oven Parts Gas Geyser Magnetic Valve,Gas Safety Valve Assembly Big Solenoid, is extruded through a slot to form long ribbons.

Drying

• 3 After the polyester emerges from polymerization,Top Time Thermocouple Safety Protection Solenoid 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.Gas Solenoid Valve for Oven, which are usually round,Safety Control Gas Magnet Valve. The number of holes in the spinneret determines the size of the yarn,Gas Stove Burner Igniter Parts Magnet Unit Valve.
• 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,Self Pulling on Gas Solenoid Magnet Valve for All Appliances Safety Protector. 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,Universal Gas Sensor Magnet Valve for Heater.
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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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Drawing tow

• 1 Newly-Gas Barbecue Thermocouple for Home Appliance.Gas Barbecue Thermocouple for Kitchenware.

Crimping

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

Setting

• 3 After the tow is crimped, it is heated at 212-302°F (100-150°C)Gas Thermocouple.Thermocouple for Gas Oven.

Cutting

• 4 Following heat setting,Gas Magnet Valve for Flame Failure Device. 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)Magnet Valve.Electromagnetic Valves, such ascarpet,polyester filaments are cut into 6 inch (15 cm)Bottle Cap Printer Machine.

The Future

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