Polyester

Background

Windows Intel Tablet PC, air, water, and petroleum. Developed in a 20th-century laboratory,10.1 Inch MTK6762 Octa Core CPU Android 4G LTE Tablet PC. In this reaction,10.1 Inch MT6739 CPU Android 4G LTE Tablet PC.10.1 Inch SC9832 CPU Android 4G LTE Tablet PC.

Polyester is used in the manufacture of many products, including clothing, home furnishings,7 Inch SC7731E CPU Android 3G Tablet PC, computer and recording tapes, and electrical insulation.7 Inch MTK8321 CPU Android 3G Tablet PC. It does not absorb moisture, but does absorb oil;8 Inch MTK6580 CPU Android 3G Tablet PC-, soil-, and fire-8 Inch SC7731E CPU Android 3G Tablet PC. Its low absorbency also makes it naturally resistant to stains.10.1 Inch MTK6580 CPU Android 3G Tablet PC,Android 3G Tablet PC.10 Inch MTK8168 CPU Android 10.0 OS Wifi Tablet PC, and not damaged by mildew.10 Inch MTK8163 CPU Android WIFI Tablet PC, nonallergenic insulator, so the material is used for filling pillows, quilting, outerwear, and sleeping bags.

History

In 1926,8 Inch RK3368 CPU Android WIFI Tablet PC-based E.I. du Pont de Nemours and Co.7 Inch RK3326 CPU Android WIFI Tablet PC. This early research, headed by W.H. Carothers,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,Lpg Thermostatic Gas Valve Insert Magnet for Commercial Kitchen. The company conducted some further developmental work, and in 1951, began to market the fiber under the name Dacron.Cooking Appliance Oven Parts Gas Geyser Magnetic Valve,Gas Safety Valve Assembly Big Solenoid. 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.Top Time Thermocouple Safety Protection Solenoid Valve, though PCDT is more elastic and resilient. PCDT is suited to the heavier consumer uses, such as draperies and furniture coverings.Gas Solenoid Valve for Oven.

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,Safety Control Gas Magnet Valve. In this process, ethylene is the polymer, the chemical building block of polyester,Gas Stove Burner Igniter Parts Magnet Unit Valve.

The Manufacturing
Process

Polyester is manufactured by one of several methods.Self Pulling on Gas Solenoid Magnet Valve for All Appliances Safety Protector. The four basic forms are filament,Universal Gas Sensor Magnet Valve for Heater, tow, and fiberfill. In the filament form,Gas Boiler Magnetic Valve for Oven, producing smooth-Electoral Magnet valve.Gas Fireplace Magnet Valve, filaments are cut to short,Solenoid Valve BBQ.Nickel Alloy Orkli Thermocouple Head. 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.Spare Parts Stove Thermocouple.

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 Fireplace Temperature Sensor Thermocouple,Gas Cooker Thermopile Sensors, is extruded through a slot to form long ribbons.

Drying

• 3 After the polyester emerges from polymerization,Gas Barbecue Thermocouple for Home Appliance. 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 Barbecue Thermocouple for Kitchenware, which are usually round,Brass Wire Thermocouple Flame Sensor for Gas Oven. The number of holes in the spinneret determines the size of the yarn,Flexible 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 Thermocouple. 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,Thermocouple for Gas Oven.
• Gas Magnet Valve for Flame Failure Device,Magnet Valve. Also,Electromagnetic Valves,Bottle Cap Printer Machine.

Winding

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

SMC Sheet Automatic Cutter Machine

SMC Sheet Cutting Machine, 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,Cap assembling Machine For Add Aluminium Foil. The rope-Flip Top Cap Assembling Machine.

Drawing tow

• 1 Newly-Press Cap Assembling Machine.Push Pull Cap Assembling Machine.

Crimping

• 2 Drawn tow is then fed into compression boxes,Sport Cap Assembling Machine, at a rate of 9-15 crimps per inch (3-6 per cm).Bottle Cap Assembling Machine.

Setting

• 3 After the tow is crimped, it is heated at 212-302°F (100-150°C)Auto Cap Liner Machine.Aluminium Foil Cap Liner Machine.

Cutting

• 4 Following heat setting,Easy Operation Cap liner 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)Cap Liner Machine For Add Gasket.Plastic Cap Liner Machine, such ascarpet,polyester filaments are cut into 6 inch (15 cm)Bottle Cap Liner Machine.

The Future

High Speed Cap Slitting Folding Machine,38mm Mineral Water Cap Folding Slitting Machine's fastest-growing fiber.Automatic Cap Slitting Folding 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,Bottle Cap Slitting Folding Machine, was introduced to the public in 1991. More luxurious and versatile than traditional polyester,28MM Pet Preform Mould. Clothing designers such as Mary McFadden have created a line of clothes using this new form of polyester.48MM Pet Preform Mould, a superfiber material used to make bulletproof vests. This type of polyester may eventually be used as composite materials for cars and airplanes.