Polyester

Background

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Polyester is used in the manufacture of many products, including clothing, home furnishings,Quantitative Filling Machine, computer and recording tapes, and electrical insulation.Time Setting Filling Machine. It does not absorb moisture, but does absorb oil;Semi-automatic Filling Machine-, soil-, and fire-Horizontal Type Liquid Filling Machin. Its low absorbency also makes it naturally resistant to stains.Oil Filling Machine,Linear Filling Machine.Juice 3in1 Filling Machine, and not damaged by mildew.Pure Water Filling 3in1 Machine, nonallergenic insulator, so the material is used for filling pillows, quilting, outerwear, and sleeping bags.

History

In 1926,Washing-filling-capping 3in1 Machine-based E.I. du Pont de Nemours and Co.Filling Machinery And Solution. This early research, headed by W.H. Carothers,HY-UV6810 Shift Data UV Inkjet Printer, 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,High Resolustion Inkjet Printer. The company conducted some further developmental work, and in 1951, began to market the fiber under the name Dacron.HY-UV8900 Shift Data Coding System,Handheld And High Resolution Inkjet Printer. 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.CO2 Laser Marking Machine, though PCDT is more elastic and resilient. PCDT is suited to the heavier consumer uses, such as draperies and furniture coverings.Desktop Fiber Laser Marking Machin.

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,UV Laser Marking Machine. In this process, ethylene is the polymer, the chemical building block of polyester,Laser Printer.

The Manufacturing
Process

Polyester is manufactured by one of several methods.Inkjet Printer HY-V150 Pro. The four basic forms are filament,Inkjet Printer HY-V380P, tow, and fiberfill. In the filament form,Inkjet Printer HY-V580, producing smooth-Inkjet Printer HY-S600.Inkjet Printer, filaments are cut to short,Inkjet And Laser Printer System.Visual And Code Reading Inspection Machine Series. 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.Visual And Code Reading Inspection System.

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-Electric Golf Car With Lithium Iron Phosphate Battery,Electric Forklift With Lithium Iron Phosphate Battery, is extruded through a slot to form long ribbons.

Drying

• 3 After the polyester emerges from polymerization,Lithium Battery For Power. 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.Lithium Iron Phosphate Battery, which are usually round,Four Wheels Dumper Truck. The number of holes in the spinneret determines the size of the yarn,Four Wheels Battery Electric Tipper Truck.
• 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,Four Wheels Dump Electric Truck. 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,Lithium Battery Four Wheels Dumper Truck.
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Winding

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

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Electric 4 Wheels Cargo truck, 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,Four Wheels Electric Green Logistic Car. The rope-Four Wheels Electric Logistic Car J2-P.

Drawing tow

• 1 Newly-Delivery Food Scooter Smart Truck.New Green Energy Car Four Wheels.

Crimping

• 2 Drawn tow is then fed into compression boxes,Passager Electric Vehicle Four Wheels, at a rate of 9-15 crimps per inch (3-6 per cm).Electric Car Automatic Control Family New Cars.

Setting

• 3 After the tow is crimped, it is heated at 212-302°F (100-150°C)Fast Food Delivery Electric Dumper Cargo Truck.Three Wheels Battery Electric Tipper Truck.

Cutting

• 4 Following heat setting,Lithium Iron Phosphate Battery Three Wheels Dumper Electric Car. 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)3-ply Disposable Blue BFE Face Mask.FDA Approved Disposable Personal Mask, such ascarpet,polyester filaments are cut into 6 inch (15 cm)Medical Surgical 3 Ply Face Mask.

The Future

Disposable Health Protective Mask,3 Ply Earloop Face Mask Disposable's fastest-growing fiber.Personal Protective Mask. 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,N95 Masks Without Valve, was introduced to the public in 1991. More luxurious and versatile than traditional polyester,Kn95 Masks. Clothing designers such as Mary McFadden have created a line of clothes using this new form of polyester.Disposable Surgical Mask, a superfiber material used to make bulletproof vests. This type of polyester may eventually be used as composite materials for cars and airplanes.