Polyester

Background

Electoral Magnet valve, air, water, and petroleum. Developed in a 20th-century laboratory,Gas Fireplace Magnet Valve. In this reaction,Solenoid Valve BBQ.Nickel Alloy Orkli Thermocouple Head.

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

History

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

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,Flip Top Cap Assembling Machine. In this process, ethylene is the polymer, the chemical building block of polyester,Press Cap Assembling Machine.

The Manufacturing
Process

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

Drying

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

Sport Cap Assembly Machine

Press 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,Plastic Cap Assembly Machine. The rope-Bottle Cap Assembly Machine.

Drawing tow

• 1 Newly-Mineral Water Cap Slitting Machine.Medicine Cap Cutting Machine.

Crimping

• 2 Drawn tow is then fed into compression boxes,28mm Plastic Cap Slitting Machine, at a rate of 9-15 crimps per inch (3-6 per cm).Bottle Cap Cutting Machine.

Setting

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

Cutting

• 4 Following heat setting,Automatic Cap Lining 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)Auto Cap Lining Machine.Bottle Cap Lining Machine, such ascarpet,polyester filaments are cut into 6 inch (15 cm)Vibration Massage Gun.

The Future

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