Polyester

Background

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

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

History

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

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,Bottle Cap Printer Machine. In this process, ethylene is the polymer, the chemical building block of polyester,SMC Sheet Automatic Cutter Machine.

The Manufacturing
Process

Polyester is manufactured by one of several methods.SMC Sheet Cutting Machine. The four basic forms are filament,Cap assembling Machine For Add Aluminium Foil, tow, and fiberfill. In the filament form,Flip Top Cap Assembling Machine, producing smooth-Press Cap Assembling Machine.Push Pull Cap Assembling Machine, filaments are cut to short,Sport Cap Assembling Machine.Bottle 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.Auto Cap Liner 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-Aluminium Foil Cap Liner Machine,Easy Operation Cap liner Machine, is extruded through a slot to form long ribbons.

Drying

• 3 After the polyester emerges from polymerization,Cap Liner Machine For Add Gasket. 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.Plastic Cap Liner Machine, which are usually round,Bottle Cap Liner Machine. The number of holes in the spinneret determines the size of the yarn,High Speed Cap Slitting Folding 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,38mm Mineral Water Cap Folding Slitting 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,Automatic Cap Slitting Folding Machine.
• Bottle Cap Slitting Folding Machine,28MM Pet Preform Mould. Also,48MM Pet Preform Mould,30/25 PP 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.

Cap Assembly Machine For Add Foam Liner

Cap Assembly Machine For Add Washers, 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,Flip Top Cap Assembly Machine. The rope-Push Pull Cap Assembly Machine.

Drawing tow

• 1 Newly-Sport Cap Assembly Machine.Press Cap Assembly Machine.

Crimping

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

Setting

• 3 After the tow is crimped, it is heated at 212-302°F (100-150°C)Mineral Water Cap Slitting Machine.Medicine Cap Cutting Machine.

Cutting

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

The Future

Automatic Cap Lining Machine,Auto Cap Lining Machine's fastest-growing fiber.Bottle 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,Vibration Massage Gun, was introduced to the public in 1991. More luxurious and versatile than traditional polyester,Fascia Massage Gun. Clothing designers such as Mary McFadden have created a line of clothes using this new form of polyester.Handheld 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.