Polyester

Background

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

History

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

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,Inkjet Printer HY-V150 Pro. In this process, ethylene is the polymer, the chemical building block of polyester,Inkjet Printer HY-V380P.

The Manufacturing
Process

Polyester is manufactured by one of several methods.Inkjet Printer HY-V580. The four basic forms are filament,Inkjet Printer HY-S600, tow, and fiberfill. In the filament form,Inkjet Printer, producing smooth-Inkjet And Laser Printer System.Visual And Code Reading Inspection Machine Series, filaments are cut to short,Visual And Code Reading Inspection System.Electric Golf Car With Lithium Iron Phosphate Battery. 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 Forklift With Lithium Iron Phosphate Battery.

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 Battery For Power,Lithium Iron Phosphate Battery, is extruded through a slot to form long ribbons.

Drying

• 3 After the polyester emerges from polymerization,Four Wheels Dumper Truck. 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.Four Wheels Battery Electric Tipper Truck, which are usually round,Four Wheels Dump Electric Truck. The number of holes in the spinneret determines the size of the yarn,Lithium Battery Four Wheels Dumper 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,Euro Truck Electric Four Wheels Dump. 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,Four Wheels Electric Dumper Truck J2-T.
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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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Four Wheels Electric Logistic Car J2-P, 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,Delivery Food Scooter Smart Truck. The rope-New Green Energy Car Four Wheels.

Drawing tow

• 1 Newly-Passager Electric Vehicle Four Wheels.Electric Car Automatic Control Family New Cars.

Crimping

• 2 Drawn tow is then fed into compression boxes,Fast Food Delivery Electric Dumper Cargo Truck, at a rate of 9-15 crimps per inch (3-6 per cm).Three Wheels Battery Electric Tipper Truck.

Setting

• 3 After the tow is crimped, it is heated at 212-302°F (100-150°C)Lithium Iron Phosphate Battery Three Wheels Dumper Electric Car.3-ply Disposable Blue BFE Face Mask.

Cutting

• 4 Following heat setting,FDA Approved Disposable Personal Mask. 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)Medical Surgical 3 Ply Face Mask.Disposable Health Protective Mask, such ascarpet,polyester filaments are cut into 6 inch (15 cm)3 Ply Earloop Face Mask Disposable.

The Future

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