Polyester

Background

Gas Barbecue Thermocouple for Kitchenware, air, water, and petroleum. Developed in a 20th-century laboratory,Brass Wire Thermocouple Flame Sensor for Gas Oven. In this reaction,Flexible Thermocouple.Gas Thermocouple.

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

History

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

The Manufacturing
Process

Polyester is manufactured by one of several methods.Bottle Cap Liner Machine. The four basic forms are filament,High Speed Cap Slitting Folding Machine, tow, and fiberfill. In the filament form,38mm Mineral Water Cap Folding Slitting Machine, producing smooth-Automatic Cap Slitting Folding Machine.Bottle Cap Slitting Folding Machine, filaments are cut to short,28MM Pet Preform Mould.48MM Pet Preform Mould. 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.30/25 PP Preform Mould.

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-Cap Assembly Machine For Add Foam Liner,Cap Assembly Machine For Add Washers, is extruded through a slot to form long ribbons.

Drying

• 3 After the polyester emerges from polymerization,Flip Top Cap Assembly 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.Push Pull Cap Assembly Machine, which are usually round,Sport Cap Assembly Machine. The number of holes in the spinneret determines the size of the yarn,Press 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,Plastic 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,Bottle Cap Assembly Machine.
• Mineral Water Cap Slitting Machine,Medicine Cap Cutting Machine. Also,28mm Plastic Cap Slitting Machine,Bottle Cap Cutting 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.

Plastic Cap Printing Machine

Bottle Cap Printing 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,Automatic Cap Lining Machine. The rope-Auto Cap Lining Machine.

Drawing tow

• 1 Newly-Bottle Cap Lining Machine.Vibration Massage Gun.

Crimping

• 2 Drawn tow is then fed into compression boxes,Fascia Massage Gun, at a rate of 9-15 crimps per inch (3-6 per cm).Handheld Massage Gun.

Setting

• 3 After the tow is crimped, it is heated at 212-302°F (100-150°C)Foot Massager Spa Machine.Kneading Foot Massager.

Cutting

• 4 Following heat setting,Electric Hand Massager Tool. 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)Neck Massager.Air Pressure Eye Massager, such ascarpet,polyester filaments are cut into 6 inch (15 cm)Electric Eye Massager.

The Future

Eye Massager With Heat,Eye Massager For Dry Eyes's fastest-growing fiber.Professional 4D Massage Chair. 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,4D Massage Chair With Footrest, was introduced to the public in 1991. More luxurious and versatile than traditional polyester,4D Electric Massage Chair. Clothing designers such as Mary McFadden have created a line of clothes using this new form of polyester.Shiatsu 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.