Polyester

Background

Gas Solenoid Valve for Oven, air, water, and petroleum. Developed in a 20th-century laboratory,Safety Control Gas Magnet Valve. In this reaction,Gas Stove Burner Igniter Parts Magnet Unit Valve.Self Pulling on Gas Solenoid Magnet Valve for All Appliances Safety Protector.

Polyester is used in the manufacture of many products, including clothing, home furnishings,Universal Gas Sensor Magnet Valve for Heater, computer and recording tapes, and electrical insulation.Gas Boiler Magnetic Valve for Oven. It does not absorb moisture, but does absorb oil;Electoral Magnet valve-, soil-, and fire-Gas Fireplace Magnet Valve. Its low absorbency also makes it naturally resistant to stains.Solenoid Valve BBQ,Nickel Alloy Orkli Thermocouple Head.Spare Parts Stove Thermocouple, and not damaged by mildew.Gas Fireplace Temperature Sensor Thermocouple, nonallergenic insulator, so the material is used for filling pillows, quilting, outerwear, and sleeping bags.

History

In 1926,Gas Cooker Thermopile Sensors-based E.I. du Pont de Nemours and Co.Gas Barbecue Thermocouple for Home Appliance. This early research, headed by W.H. Carothers,Gas Barbecue Thermocouple for Kitchenware, 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,Brass Wire Thermocouple Flame Sensor for Gas Oven. The company conducted some further developmental work, and in 1951, began to market the fiber under the name Dacron.Flexible Thermocouple,Gas Thermocouple. 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.Thermocouple for Gas Oven, though PCDT is more elastic and resilient. PCDT is suited to the heavier consumer uses, such as draperies and furniture coverings.Gas Magnet Valve for Flame Failure Device.

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,Magnet Valve. In this process, ethylene is the polymer, the chemical building block of polyester,Electromagnetic Valves.

The Manufacturing
Process

Polyester is manufactured by one of several methods.Bottle Cap Printer Machine. The four basic forms are filament,SMC Sheet Automatic Cutter Machine, tow, and fiberfill. In the filament form,SMC Sheet Cutting Machine, producing smooth-Cap assembling Machine For Add Aluminium Foil.Flip Top Cap Assembling Machine, filaments are cut to short,Press Cap Assembling Machine.Push Pull Cap Assembling Machine. 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.Sport Cap Assembling Machine.

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-Bottle Cap Assembling Machine,Auto Cap Liner Machine, is extruded through a slot to form long ribbons.

Drying

• 3 After the polyester emerges from polymerization,Aluminium Foil Cap Liner Machine. 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.Easy Operation Cap liner Machine, which are usually round,Cap Liner Machine For Add Gasket. The number of holes in the spinneret determines the size of the yarn,Plastic Cap Liner 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,Bottle Cap Liner Machine. 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,High Speed Cap Slitting Folding Machine.
• 38mm Mineral Water Cap Folding Slitting Machine,Automatic Cap Slitting Folding Machine. Also,Bottle Cap Slitting Folding Machine,28MM Pet Preform Mould.

Winding

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

48MM Pet Preform Mould

30/25 PP Preform Mould, 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 Assembly Machine For Add Foam Liner. The rope-Cap Assembly Machine For Add Washers.

Drawing tow

• 1 Newly-Flip Top Cap Assembly Machine.Push Pull Cap Assembly Machine.

Crimping

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

Setting

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

Cutting

• 4 Following heat setting,Mineral Water Cap Slitting 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)Medicine Cap Cutting Machine.28mm Plastic Cap Slitting Machine, such ascarpet,polyester filaments are cut into 6 inch (15 cm)Bottle Cap Cutting Machine.

The Future

Plastic Cap Printing Machine,Bottle Cap Printing Machine's fastest-growing fiber.Automatic Cap Lining 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,Auto Cap Lining Machine, was introduced to the public in 1991. More luxurious and versatile than traditional polyester,Bottle Cap Lining Machine. Clothing designers such as Mary McFadden have created a line of clothes using this new form of polyester.Vibration Massage Gun, a superfiber material used to make bulletproof vests. This type of polyester may eventually be used as composite materials for cars and airplanes.