Polyester

Background

Pure Water Filling 3in1 Machine, air, water, and petroleum. Developed in a 20th-century laboratory,Washing-filling-capping 3in1 Machine. In this reaction,Filling Machinery And Solution.HY-UV6810 Shift Data UV Inkjet Printer.

Polyester is used in the manufacture of many products, including clothing, home furnishings,High Resolustion Inkjet Printer, computer and recording tapes, and electrical insulation.HY-UV8900 Shift Data Coding System. It does not absorb moisture, but does absorb oil;Handheld And High Resolution Inkjet Printer-, soil-, and fire-CO2 Laser Marking Machine. Its low absorbency also makes it naturally resistant to stains.Desktop Fiber Laser Marking Machin,UV Laser Marking Machine.Laser Printer, and not damaged by mildew.Inkjet Printer HY-V150 Pro, nonallergenic insulator, so the material is used for filling pillows, quilting, outerwear, and sleeping bags.

History

In 1926,Inkjet Printer HY-V380P-based E.I. du Pont de Nemours and Co.Inkjet Printer HY-V580. This early research, headed by W.H. Carothers,Inkjet Printer HY-S600, 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,Inkjet Printer. The company conducted some further developmental work, and in 1951, began to market the fiber under the name Dacron.Inkjet And Laser Printer System,Visual And Code Reading Inspection Machine Series. 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.Visual And Code Reading Inspection System, though PCDT is more elastic and resilient. PCDT is suited to the heavier consumer uses, such as draperies and furniture coverings.Electric Golf Car With Lithium Iron Phosphate Battery.

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,Electric Forklift With Lithium Iron Phosphate Battery. In this process, ethylene is the polymer, the chemical building block of polyester,Lithium Battery For Power.

The Manufacturing
Process

Polyester is manufactured by one of several methods.Lithium Iron Phosphate Battery. The four basic forms are filament,Four Wheels Dumper Truck, tow, and fiberfill. In the filament form,Four Wheels Battery Electric Tipper Truck, producing smooth-Four Wheels Dump Electric Truck.Lithium Battery Four Wheels Dumper Truck, filaments are cut to short,Euro Truck Electric Four Wheels Dump.Four Wheels Electric Dumper Truck J2-T. 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.Wheelchair Electric Car Smart Vehicle.

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-Disabled Person Smart Green Electric Car,Four Wheels Wheelchair Electric Car J2-W, is extruded through a slot to form long ribbons.

Drying

• 3 After the polyester emerges from polymerization,Electric 4 Wheels Cargo 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 Electric Green Logistic Car, which are usually round,Four Wheels Electric Logistic Car J2-P. The number of holes in the spinneret determines the size of the yarn,Delivery Food Scooter Smart 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,New Green Energy Car Four Wheels. 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,Passager Electric Vehicle Four Wheels.
• Electric Car Automatic Control Family New Cars,Fast Food Delivery Electric Dumper Cargo Truck. Also,Three Wheels Battery Electric Tipper Truck,Lithium Iron Phosphate Battery Three Wheels Dumper Electric Car.

Winding

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

3-ply Disposable Blue BFE Face Mask

FDA Approved Disposable Personal 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,Medical Surgical 3 Ply Face Mask. The rope-Disposable Health Protective Mask.

Drawing tow

• 1 Newly-3 Ply Earloop Face Mask Disposable.Personal Protective Mask.

Crimping

• 2 Drawn tow is then fed into compression boxes,N95 Masks Without Valve, at a rate of 9-15 crimps per inch (3-6 per cm).Kn95 Masks.

Setting

• 3 After the tow is crimped, it is heated at 212-302°F (100-150°C)Disposable Surgical Mask.Disposable Face Mask.

Cutting

• 4 Following heat setting,Face Mask Protective Gasket. 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)Disposable Surgical Masks.Disposable Medical Mask , such ascarpet,polyester filaments are cut into 6 inch (15 cm)Disposable Medical Masks.

The Future

Disposable Non-medical Mask,Disposable Non Woven Three Layer Ear Hanging Mask's fastest-growing fiber.Disposable Non-medical 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,metal cnc machining, was introduced to the public in 1991. More luxurious and versatile than traditional polyester,Stamping Pipe Buckle. Clothing designers such as Mary McFadden have created a line of clothes using this new form of polyester.Greenhouses Flat Timber Connector, a superfiber material used to make bulletproof vests. This type of polyester may eventually be used as composite materials for cars and airplanes.