Polyester

Background

Time Setting Filling Machine, air, water, and petroleum. Developed in a 20th-century laboratory,Semi-automatic Filling Machine. In this reaction,Horizontal Type Liquid Filling Machin.Oil Filling Machine.

Polyester is used in the manufacture of many products, including clothing, home furnishings,Linear Filling Machine, computer and recording tapes, and electrical insulation.Juice 3in1 Filling Machine. It does not absorb moisture, but does absorb oil;Pure Water Filling 3in1 Machine-, soil-, and fire-Washing-filling-capping 3in1 Machine. Its low absorbency also makes it naturally resistant to stains.Filling Machinery And Solution,HY-UV6810 Shift Data UV Inkjet Printer.High Resolustion Inkjet Printer, and not damaged by mildew.HY-UV8900 Shift Data Coding System, nonallergenic insulator, so the material is used for filling pillows, quilting, outerwear, and sleeping bags.

History

In 1926,Handheld And High Resolution Inkjet Printer-based E.I. du Pont de Nemours and Co.CO2 Laser Marking Machine. This early research, headed by W.H. Carothers,Desktop Fiber Laser Marking Machin, 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,UV Laser Marking Machine. The company conducted some further developmental work, and in 1951, began to market the fiber under the name Dacron.Laser Printer,Inkjet Printer HY-V150 Pro. 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.Inkjet Printer HY-V380P, though PCDT is more elastic and resilient. PCDT is suited to the heavier consumer uses, such as draperies and furniture coverings.Inkjet Printer HY-V580.

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-S600. In this process, ethylene is the polymer, the chemical building block of polyester,Inkjet Printer.

The Manufacturing
Process

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

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-Four Wheels Battery Electric Tipper Truck,Four Wheels Dump Electric Truck, is extruded through a slot to form long ribbons.

Drying

• 3 After the polyester emerges from polymerization,Lithium Battery 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.Euro Truck Electric Four Wheels Dump, which are usually round,Four Wheels Electric Dumper Truck J2-T. The number of holes in the spinneret determines the size of the yarn,Wheelchair Electric Car Smart Vehicle.
• 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,Disabled Person Smart Green Electric Car. 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 Wheelchair Electric Car J2-W.
• Electric 4 Wheels Cargo truck,Four Wheels Electric Green Logistic Car. Also,Four Wheels Electric Logistic Car J2-P,Delivery Food Scooter Smart Truck.

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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Passager Electric Vehicle Four Wheels, 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,Electric Car Automatic Control Family New Cars. The rope-Fast Food Delivery Electric Dumper Cargo Truck.

Drawing tow

• 1 Newly-Three Wheels Battery Electric Tipper Truck.Lithium Iron Phosphate Battery Three Wheels Dumper Electric Car.

Crimping

• 2 Drawn tow is then fed into compression boxes,3-ply Disposable Blue BFE Face Mask, at a rate of 9-15 crimps per inch (3-6 per cm).FDA Approved Disposable Personal Mask.

Setting

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

Cutting

• 4 Following heat setting,3 Ply Earloop Face Mask Disposable. 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)Personal Protective Mask.N95 Masks Without Valve, such ascarpet,polyester filaments are cut into 6 inch (15 cm)Kn95 Masks.

The Future

Disposable Surgical Mask,Disposable Face Mask's fastest-growing fiber.Face Mask Protective Gasket. 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 Masks, was introduced to the public in 1991. More luxurious and versatile than traditional polyester,Disposable Medical Mask . Clothing designers such as Mary McFadden have created a line of clothes using this new form of polyester.Disposable Medical Masks, a superfiber material used to make bulletproof vests. This type of polyester may eventually be used as composite materials for cars and airplanes.