Polyester

Background

Spare Parts Stove Thermocouple, air, water, and petroleum. Developed in a 20th-century laboratory,Gas Fireplace Temperature Sensor Thermocouple. In this reaction,Gas Cooker Thermopile Sensors.Gas Barbecue Thermocouple for Home Appliance.

Polyester is used in the manufacture of many products, including clothing, home furnishings,Gas Barbecue Thermocouple for Kitchenware, computer and recording tapes, and electrical insulation.Brass Wire Thermocouple Flame Sensor for Gas Oven. It does not absorb moisture, but does absorb oil;Flexible Thermocouple-, soil-, and fire-Gas Thermocouple. Its low absorbency also makes it naturally resistant to stains.Thermocouple for Gas Oven,Gas Magnet Valve for Flame Failure Device.Magnet Valve, and not damaged by mildew.Electromagnetic Valves, nonallergenic insulator, so the material is used for filling pillows, quilting, outerwear, and sleeping bags.

History

In 1926,Bottle Cap Printer Machine-based E.I. du Pont de Nemours and Co.SMC Sheet Automatic Cutter Machine. This early research, headed by W.H. Carothers,SMC Sheet Cutting Machine, 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,Cap assembling Machine For Add Aluminium Foil. The company conducted some further developmental work, and in 1951, began to market the fiber under the name Dacron.Flip Top Cap Assembling Machine,Press Cap Assembling Machine. 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.Push Pull Cap Assembling Machine, though PCDT is more elastic and resilient. PCDT is suited to the heavier consumer uses, such as draperies and furniture coverings.Sport Cap Assembling 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,Bottle Cap Assembling Machine. In this process, ethylene is the polymer, the chemical building block of polyester,Auto Cap Liner Machine.

The Manufacturing
Process

Polyester is manufactured by one of several methods.Aluminium Foil Cap Liner Machine. The four basic forms are filament,Easy Operation Cap liner Machine, tow, and fiberfill. In the filament form,Cap Liner Machine For Add Gasket, producing smooth-Plastic Cap Liner Machine.Bottle Cap Liner Machine, filaments are cut to short,High Speed Cap Slitting Folding Machine.38mm Mineral Water Cap Folding Slitting 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.Automatic Cap Slitting Folding 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 Slitting Folding Machine,28MM Pet Preform Mould, is extruded through a slot to form long ribbons.

Drying

• 3 After the polyester emerges from polymerization,48MM Pet Preform Mould. 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.30/25 PP Preform Mould, which are usually round,Cap Assembly Machine For Add Foam Liner. The number of holes in the spinneret determines the size of the yarn,Cap Assembly Machine For Add Washers.
• 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,Flip Top Cap Assembly 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,Push Pull Cap Assembly Machine.
• Sport Cap Assembly Machine,Press Cap Assembly Machine. Also,Plastic Cap Assembly Machine,Bottle Cap Assembly 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.

Mineral Water Cap Slitting Machine

Medicine Cap 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,28mm Plastic Cap Slitting Machine. The rope-Bottle Cap Cutting Machine.

Drawing tow

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

Crimping

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

Setting

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

Cutting

• 4 Following heat setting,Fascia Massage Gun. 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)Handheld Massage Gun.Foot Massager Spa Machine, such ascarpet,polyester filaments are cut into 6 inch (15 cm)Kneading Foot Massager.

The Future

Electric Hand Massager Tool,Neck Massager's fastest-growing fiber.Air Pressure Eye Massager. 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,Electric Eye Massager, was introduced to the public in 1991. More luxurious and versatile than traditional polyester,Eye Massager With Heat. Clothing designers such as Mary McFadden have created a line of clothes using this new form of polyester.Eye Massager For Dry Eyes, a superfiber material used to make bulletproof vests. This type of polyester may eventually be used as composite materials for cars and airplanes.