Polyester

Background

Two or Four Cups Filling and Sealing Machine, air, water, and petroleum. Developed in a 20th-century laboratory,3-10L Bottle Water Filling Machine. In this reaction,3-10L Bottle Water Filling Machine.Quantitative Filling Machine.

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

History

In 1926,Filling Machinery And Solution-based E.I. du Pont de Nemours and Co.HY-UV6810 Shift Data UV Inkjet Printer. This early research, headed by W.H. Carothers,High Resolustion 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,HY-UV8900 Shift Data Coding System. The company conducted some further developmental work, and in 1951, began to market the fiber under the name Dacron.Handheld And High Resolution Inkjet Printer,CO2 Laser Marking 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.Desktop Fiber Laser Marking Machin, though PCDT is more elastic and resilient. PCDT is suited to the heavier consumer uses, such as draperies and furniture coverings.UV Laser Marking 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,Laser Printer. In this process, ethylene is the polymer, the chemical building block of polyester,Inkjet Printer HY-V150 Pro.

The Manufacturing
Process

Polyester is manufactured by one of several methods.Inkjet Printer HY-V380P. The four basic forms are filament,Inkjet Printer HY-V580, tow, and fiberfill. In the filament form,Inkjet Printer HY-S600, producing smooth-Inkjet Printer.Inkjet And Laser Printer System, filaments are cut to short,Visual And Code Reading Inspection Machine Series.Visual And Code Reading Inspection System. 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 Golf Car 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-Electric Forklift With Lithium Iron Phosphate Battery,Lithium Battery For Power, is extruded through a slot to form long ribbons.

Drying

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

Drawing tow

• 1 Newly-New Green Energy Car Four Wheels.Passager Electric Vehicle Four Wheels.

Crimping

• 2 Drawn tow is then fed into compression boxes,Electric Car Automatic Control Family New Cars, at a rate of 9-15 crimps per inch (3-6 per cm).Fast Food Delivery Electric Dumper Cargo Truck.

Setting

• 3 After the tow is crimped, it is heated at 212-302°F (100-150°C)Three Wheels Battery Electric Tipper Truck.Lithium Iron Phosphate Battery Three Wheels Dumper Electric Car.

Cutting

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

The Future

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