Polyester

Background

Android 8 Inch Rugged Tablet PC, air, water, and petroleum. Developed in a 20th-century laboratory,Android 10.1 Inch Rugged Tablet PC. In this reaction,Windows 10.1 Inch Rugged Tablet PC.11.6 Inch Surface Windows 2 In 1 Tablet PC.

Polyester is used in the manufacture of many products, including clothing, home furnishings,8 Inch Windows 10 education Tablet PC Z8350 1280X800 2GB Ram 64 Rom, computer and recording tapes, and electrical insulation.Windows Intel Tablet PC. It does not absorb moisture, but does absorb oil;10.1 Inch MTK6762 Octa Core CPU Android 4G LTE Tablet PC-, soil-, and fire-10.1 Inch MT6739 CPU Android 4G LTE Tablet PC. Its low absorbency also makes it naturally resistant to stains.10.1 Inch SC9832 CPU Android 4G LTE Tablet PC,7 Inch SC7731E CPU Android 3G Tablet PC.7 Inch MTK8321 CPU Android 3G Tablet PC, and not damaged by mildew.8 Inch MTK6580 CPU Android 3G Tablet PC, nonallergenic insulator, so the material is used for filling pillows, quilting, outerwear, and sleeping bags.

History

In 1926,8 Inch SC7731E CPU Android 3G Tablet PC-based E.I. du Pont de Nemours and Co.10.1 Inch MTK6580 CPU Android 3G Tablet PC. This early research, headed by W.H. Carothers,Android 3G 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 Inch MTK8168 CPU Android 10.0 OS Wifi Tablet PC. The company conducted some further developmental work, and in 1951, began to market the fiber under the name Dacron.10 Inch MTK8163 CPU Android WIFI Tablet PC,8 Inch RK3368 CPU Android WIFI 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 RK3326 CPU Android WIFI Tablet PC, though PCDT is more elastic and resilient. PCDT is suited to the heavier consumer uses, such as draperies and furniture coverings.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,Lpg Thermostatic Gas Valve Insert Magnet for Commercial Kitchen. In this process, ethylene is the polymer, the chemical building block of polyester,Cooking Appliance Oven Parts Gas Geyser Magnetic Valve.

The Manufacturing
Process

Polyester is manufactured by one of several methods.Gas Safety Valve Assembly Big Solenoid. The four basic forms are filament,Top Time Thermocouple Safety Protection Solenoid Valve, tow, and fiberfill. In the filament form,Gas Solenoid Valve for Oven, producing smooth-Safety Control Gas Magnet Valve.Gas Stove Burner Igniter Parts Magnet Unit Valve, filaments are cut to short,Self Pulling on Gas Solenoid Magnet Valve for All Appliances Safety Protector.Universal Gas Sensor Magnet Valve for Heater. 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.Gas Boiler Magnetic Valve for Oven.

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-Electoral Magnet valve,Gas Fireplace Magnet Valve, is extruded through a slot to form long ribbons.

Drying

• 3 After the polyester emerges from polymerization,Solenoid Valve BBQ. 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.Nickel Alloy Orkli Thermocouple Head, which are usually round,Spare Parts Stove Thermocouple. The number of holes in the spinneret determines the size of the yarn,Gas Fireplace Temperature Sensor Thermocouple.
• 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,Gas Cooker Thermopile Sensors. 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 Barbecue Thermocouple for Home Appliance.
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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-Bottle Cap Printer Machine.SMC Sheet Automatic Cutter Machine.

Crimping

• 2 Drawn tow is then fed into compression boxes,SMC Sheet Cutting Machine, at a rate of 9-15 crimps per inch (3-6 per cm).Cap assembling Machine For Add Aluminium Foil.

Setting

• 3 After the tow is crimped, it is heated at 212-302°F (100-150°C)Flip Top Cap Assembling Machine.Press Cap Assembling Machine.

Cutting

• 4 Following heat setting,Push Pull Cap Assembling 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)Sport Cap Assembling Machine.Bottle Cap Assembling Machine, such ascarpet,polyester filaments are cut into 6 inch (15 cm)Auto Cap Liner Machine.

The Future

Aluminium Foil Cap Liner Machine,Easy Operation Cap liner Machine's fastest-growing fiber.Cap Liner Machine For Add Gasket. 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,Plastic Cap Liner Machine, was introduced to the public in 1991. More luxurious and versatile than traditional polyester,Bottle Cap Liner Machine. Clothing designers such as Mary McFadden have created a line of clothes using this new form of polyester.High Speed Cap Slitting Folding Machine, a superfiber material used to make bulletproof vests. This type of polyester may eventually be used as composite materials for cars and airplanes.