Polyester

Background

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

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

History

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

The Manufacturing
Process

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

Drying

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

28mm Plastic Cap Slitting Machine

Bottle 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,Plastic Cap Printing Machine. The rope-Bottle Cap Printing Machine.

Drawing tow

• 1 Newly-Automatic Cap Lining Machine.Auto Cap Lining Machine.

Crimping

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

Setting

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

Cutting

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

The Future

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