Polyester

Background

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

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

History

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

The Manufacturing
Process

Polyester is manufactured by one of several methods.Easy Operation Cap liner Machine. The four basic forms are filament,Cap Liner Machine For Add Gasket, tow, and fiberfill. In the filament form,Plastic Cap Liner Machine, producing smooth-Bottle Cap Liner Machine.High Speed Cap Slitting Folding Machine, filaments are cut to short,38mm Mineral Water Cap Folding Slitting Machine.Automatic Cap Slitting Folding 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.Bottle 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-28MM Pet Preform Mould,48MM Pet Preform Mould, is extruded through a slot to form long ribbons.

Drying

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

Medicine Cap Cutting Machine

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

Drawing tow

• 1 Newly-Bottle Cap Printing Machine.Automatic Cap Lining Machine.

Crimping

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

Setting

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

Cutting

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

The Future

Neck Massager,Air Pressure Eye Massager's fastest-growing fiber.Electric 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,Eye Massager With Heat, was introduced to the public in 1991. More luxurious and versatile than traditional polyester,Eye Massager For Dry Eyes. Clothing designers such as Mary McFadden have created a line of clothes using this new form of polyester.Professional 4D Massage Chair, a superfiber material used to make bulletproof vests. This type of polyester may eventually be used as composite materials for cars and airplanes.