Polyester

Background

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

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

History

In 1926,HY-UV8900 Shift Data Coding System-based E.I. du Pont de Nemours and Co.Handheld And High Resolution Inkjet Printer. This early research, headed by W.H. Carothers,CO2 Laser Marking Machine, 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,Desktop Fiber Laser Marking Machin. The company conducted some further developmental work, and in 1951, began to market the fiber under the name Dacron.UV Laser Marking Machine,Laser 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.Inkjet Printer HY-V150 Pro, though PCDT is more elastic and resilient. PCDT is suited to the heavier consumer uses, such as draperies and furniture coverings.Inkjet Printer HY-V380P.

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-V580. In this process, ethylene is the polymer, the chemical building block of polyester,Inkjet Printer HY-S600.

The Manufacturing
Process

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

Drying

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

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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New Green Energy Car 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,Passager Electric Vehicle Four Wheels. The rope-Electric Car Automatic Control Family New Cars.

Drawing tow

• 1 Newly-Fast Food Delivery Electric Dumper Cargo Truck.Three Wheels Battery Electric Tipper Truck.

Crimping

• 2 Drawn tow is then fed into compression boxes,Lithium Iron Phosphate Battery Three Wheels Dumper Electric Car, at a rate of 9-15 crimps per inch (3-6 per cm).3-ply Disposable Blue BFE Face Mask.

Setting

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

Cutting

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

The Future

Kn95 Masks,Disposable Surgical Mask's fastest-growing fiber.Disposable Face 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,Face Mask Protective Gasket, was introduced to the public in 1991. More luxurious and versatile than traditional polyester,Disposable Surgical Masks. Clothing designers such as Mary McFadden have created a line of clothes using this new form of polyester.Disposable Medical Mask , a superfiber material used to make bulletproof vests. This type of polyester may eventually be used as composite materials for cars and airplanes.