Polyester

Background

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Polyester is used in the manufacture of many products, including clothing, home furnishings,Inkjet Printer HY-V580, computer and recording tapes, and electrical insulation.Inkjet Printer HY-S600. It does not absorb moisture, but does absorb oil;Inkjet Printer-, soil-, and fire-Inkjet And Laser Printer System. Its low absorbency also makes it naturally resistant to stains.Visual And Code Reading Inspection Machine Series,Visual And Code Reading Inspection System.Electric Golf Car With Lithium Iron Phosphate Battery, and not damaged by mildew.Electric Forklift With Lithium Iron Phosphate Battery, nonallergenic insulator, so the material is used for filling pillows, quilting, outerwear, and sleeping bags.

History

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

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,Wheelchair Electric Car Smart Vehicle. In this process, ethylene is the polymer, the chemical building block of polyester,Disabled Person Smart Green Electric Car.

The Manufacturing
Process

Polyester is manufactured by one of several methods.Four Wheels Wheelchair Electric Car J2-W. The four basic forms are filament,Electric 4 Wheels Cargo truck, tow, and fiberfill. In the filament form,Four Wheels Electric Green Logistic Car, producing smooth-Four Wheels Electric Logistic Car J2-P.Delivery Food Scooter Smart Truck, filaments are cut to short,New Green Energy Car Four Wheels.Passager Electric Vehicle Four Wheels. 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.Electric Car Automatic Control Family New Cars.

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-Fast Food Delivery Electric Dumper Cargo Truck,Three Wheels Battery Electric Tipper Truck, is extruded through a slot to form long ribbons.

Drying

• 3 After the polyester emerges from polymerization,Lithium Iron Phosphate Battery Three Wheels Dumper Electric Car. 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.3-ply Disposable Blue BFE Face Mask, which are usually round,FDA Approved Disposable Personal Mask. The number of holes in the spinneret determines the size of the yarn,Medical Surgical 3 Ply Face Mask.
• 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,Disposable Health 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,3 Ply Earloop Face Mask Disposable.
• Personal Protective Mask,N95 Masks Without Valve. Also,Kn95 Masks,Disposable Surgical Mask.

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 Face Mask

Face Mask Protective Gasket, 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 Surgical Masks. The rope-Disposable Medical Mask .

Drawing tow

• 1 Newly-Disposable Medical Masks.Disposable Non-medical Mask.

Crimping

• 2 Drawn tow is then fed into compression boxes,Disposable Non Woven Three Layer Ear Hanging Mask, at a rate of 9-15 crimps per inch (3-6 per cm).Disposable Non-medical Masks.

Setting

• 3 After the tow is crimped, it is heated at 212-302°F (100-150°C)metal cnc machining.Stamping Pipe Buckle.

Cutting

• 4 Following heat setting,Greenhouses Flat Timber Connector. 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)CNC Machining Parts.Machining Parts, such ascarpet,polyester filaments are cut into 6 inch (15 cm)Casting Machining.

The Future

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