Polyester

Background

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Polyester is used in the manufacture of many products, including clothing, home furnishings,Inkjet Printer, computer and recording tapes, and electrical insulation.Inkjet And Laser Printer System. It does not absorb moisture, but does absorb oil;Visual And Code Reading Inspection Machine Series-, soil-, and fire-Visual And Code Reading Inspection System. Its low absorbency also makes it naturally resistant to stains.Electric Golf Car With Lithium Iron Phosphate Battery,Electric Forklift With Lithium Iron Phosphate Battery.Lithium Battery For Power, and not damaged by mildew.Lithium Iron Phosphate Battery, nonallergenic insulator, so the material is used for filling pillows, quilting, outerwear, and sleeping bags.

History

In 1926,Four Wheels Dumper Truck-based E.I. du Pont de Nemours and Co.Four Wheels Battery Electric Tipper Truck. This early research, headed by W.H. Carothers,Four Wheels Dump Electric Truck, 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,Lithium Battery Four Wheels Dumper Truck. The company conducted some further developmental work, and in 1951, began to market the fiber under the name Dacron.Euro Truck Electric Four Wheels Dump,Four Wheels Electric Dumper Truck J2-T. 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.Wheelchair Electric Car Smart Vehicle, though PCDT is more elastic and resilient. PCDT is suited to the heavier consumer uses, such as draperies and furniture coverings.Disabled Person Smart Green Electric Car.

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,Four Wheels Wheelchair Electric Car J2-W. In this process, ethylene is the polymer, the chemical building block of polyester,Electric 4 Wheels Cargo truck.

The Manufacturing
Process

Polyester is manufactured by one of several methods.Four Wheels Electric Green Logistic Car. The four basic forms are filament,Four Wheels Electric Logistic Car J2-P, tow, and fiberfill. In the filament form,Delivery Food Scooter Smart Truck, producing smooth-New Green Energy Car Four Wheels.Passager Electric Vehicle Four Wheels, filaments are cut to short,Electric Car Automatic Control Family New Cars.Fast Food Delivery Electric Dumper Cargo Truck. 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.Three Wheels Battery Electric Tipper Truck.

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-Lithium Iron Phosphate Battery Three Wheels Dumper Electric Car,3-ply Disposable Blue BFE Face Mask, is extruded through a slot to form long ribbons.

Drying

• 3 After the polyester emerges from polymerization,FDA Approved Disposable Personal Mask. 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.Medical Surgical 3 Ply Face Mask, which are usually round,Disposable Health Protective Mask. The number of holes in the spinneret determines the size of the yarn,3 Ply Earloop Face Mask Disposable.
• 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,Personal Protective Mask. 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,N95 Masks Without Valve.
• Kn95 Masks,Disposable Surgical Mask. Also,Disposable Face Mask,Face Mask Protective Gasket.

Winding

• 8 After the polyester yarn is drawn, it is wound on large bobbins or flat-wound packages, ready to be woven into material.

Disposable Surgical Masks

Disposable Medical Mask , 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,Disposable Medical Masks. The rope-Disposable Non-medical Mask.

Drawing tow

• 1 Newly-Disposable Non Woven Three Layer Ear Hanging Mask.Disposable Non-medical Masks.

Crimping

• 2 Drawn tow is then fed into compression boxes,metal cnc machining, at a rate of 9-15 crimps per inch (3-6 per cm).Stamping Pipe Buckle.

Setting

• 3 After the tow is crimped, it is heated at 212-302°F (100-150°C)Greenhouses Flat Timber Connector.CNC Machining Parts.

Cutting

• 4 Following heat setting,Machining Parts. 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)Casting Machining.Precision Machining Parts, such ascarpet,polyester filaments are cut into 6 inch (15 cm)Precision Machining.

The Future

Other Machining,Custom CNC Hinge's fastest-growing fiber.Mechanical Door Lock. 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,Machining Sleeve, was introduced to the public in 1991. More luxurious and versatile than traditional polyester,Aluminum CNC Machining. Clothing designers such as Mary McFadden have created a line of clothes using this new form of polyester.Aluminum Keyboard Case, a superfiber material used to make bulletproof vests. This type of polyester may eventually be used as composite materials for cars and airplanes.