Polyester

Background

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

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

History

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

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

The Manufacturing
Process

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

Drying

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

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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Flip Top Cap Assembly 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,Push Pull Cap Assembly Machine. The rope-Sport Cap Assembly Machine.

Drawing tow

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

Crimping

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

Setting

• 3 After the tow is crimped, it is heated at 212-302°F (100-150°C)Medicine Cap Cutting Machine.28mm Plastic Cap Slitting Machine.

Cutting

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

The Future

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