Polyester

Background

10.1 Inch MTK6580 CPU Android 3G Tablet PC, air, water, and petroleum. Developed in a 20th-century laboratory,Android 3G Tablet PC. In this reaction,10 Inch MTK8168 CPU Android 10.0 OS Wifi Tablet PC.10 Inch MTK8163 CPU Android WIFI Tablet PC.

Polyester is used in the manufacture of many products, including clothing, home furnishings,8 Inch RK3368 CPU Android WIFI Tablet PC, computer and recording tapes, and electrical insulation.7 Inch RK3326 CPU Android WIFI Tablet PC. It does not absorb moisture, but does absorb oil;Tablet PC-, soil-, and fire-Lpg Thermostatic Gas Valve Insert Magnet for Commercial Kitchen. Its low absorbency also makes it naturally resistant to stains.Cooking Appliance Oven Parts Gas Geyser Magnetic Valve,Gas Safety Valve Assembly Big Solenoid.Top Time Thermocouple Safety Protection Solenoid Valve, and not damaged by mildew.Gas Solenoid Valve for Oven, nonallergenic insulator, so the material is used for filling pillows, quilting, outerwear, and sleeping bags.

History

In 1926,Safety Control Gas Magnet Valve-based E.I. du Pont de Nemours and Co.Gas Stove Burner Igniter Parts Magnet Unit Valve. This early research, headed by W.H. Carothers,Self Pulling on Gas Solenoid Magnet Valve for All Appliances Safety Protector, 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,Universal Gas Sensor Magnet Valve for Heater. The company conducted some further developmental work, and in 1951, began to market the fiber under the name Dacron.Gas Boiler Magnetic Valve for Oven,Electoral Magnet valve. 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.Gas Fireplace Magnet Valve, though PCDT is more elastic and resilient. PCDT is suited to the heavier consumer uses, such as draperies and furniture coverings.Solenoid Valve BBQ.

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,Nickel Alloy Orkli Thermocouple Head. In this process, ethylene is the polymer, the chemical building block of polyester,Spare Parts Stove Thermocouple.

The Manufacturing
Process

Polyester is manufactured by one of several methods.Gas Fireplace Temperature Sensor Thermocouple. The four basic forms are filament,Gas Cooker Thermopile Sensors, tow, and fiberfill. In the filament form,Gas Barbecue Thermocouple for Home Appliance, producing smooth-Gas Barbecue Thermocouple for Kitchenware.Brass Wire Thermocouple Flame Sensor for Gas Oven, filaments are cut to short,Flexible Thermocouple.Gas Thermocouple. 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.Thermocouple for Gas 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-Gas Magnet Valve for Flame Failure Device,Magnet Valve, is extruded through a slot to form long ribbons.

Drying

• 3 After the polyester emerges from polymerization,Electromagnetic Valves. 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.Bottle Cap Printer Machine, which are usually round,SMC Sheet Automatic Cutter Machine. The number of holes in the spinneret determines the size of the yarn,SMC Sheet Cutting Machine.
• 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,Cap assembling Machine For Add Aluminium Foil. 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,Flip Top Cap Assembling Machine.
• Press Cap Assembling Machine,Push Pull Cap Assembling Machine. Also,Sport Cap Assembling Machine,Bottle Cap Assembling 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.

Auto Cap Liner Machine

Aluminium Foil Cap Liner 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,Easy Operation Cap liner Machine. The rope-Cap Liner Machine For Add Gasket.

Drawing tow

• 1 Newly-Plastic Cap Liner Machine.Bottle Cap Liner Machine.

Crimping

• 2 Drawn tow is then fed into compression boxes,High Speed Cap Slitting Folding Machine, at a rate of 9-15 crimps per inch (3-6 per cm).38mm Mineral Water Cap Folding Slitting Machine.

Setting

• 3 After the tow is crimped, it is heated at 212-302°F (100-150°C)Automatic Cap Slitting Folding Machine.Bottle Cap Slitting Folding Machine.

Cutting

• 4 Following heat setting,28MM Pet Preform Mould. 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)48MM Pet Preform Mould.30/25 PP Preform Mould, such ascarpet,polyester filaments are cut into 6 inch (15 cm)Cap Assembly Machine For Add Foam Liner.

The Future

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