Polyester

Background

Four Wheels Dump Electric Truck, air, water, and petroleum. Developed in a 20th-century laboratory,Lithium Battery Four Wheels Dumper Truck. In this reaction,Euro Truck Electric Four Wheels Dump.Four Wheels Electric Dumper Truck J2-T.

Polyester is used in the manufacture of many products, including clothing, home furnishings,Wheelchair Electric Car Smart Vehicle, computer and recording tapes, and electrical insulation.Disabled Person Smart Green Electric Car. It does not absorb moisture, but does absorb oil;Four Wheels Wheelchair Electric Car J2-W-, soil-, and fire-Electric 4 Wheels Cargo truck. Its low absorbency also makes it naturally resistant to stains.Four Wheels Electric Green Logistic Car,Four Wheels Electric Logistic Car J2-P.Delivery Food Scooter Smart Truck, and not damaged by mildew.New Green Energy Car Four Wheels, nonallergenic insulator, so the material is used for filling pillows, quilting, outerwear, and sleeping bags.

History

In 1926,Passager Electric Vehicle Four Wheels-based E.I. du Pont de Nemours and Co.Electric Car Automatic Control Family New Cars. This early research, headed by W.H. Carothers,Fast Food Delivery Electric Dumper Cargo Truck, 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,Three Wheels Battery Electric Tipper Truck. The company conducted some further developmental work, and in 1951, began to market the fiber under the name Dacron.Lithium Iron Phosphate Battery Three Wheels Dumper Electric Car,3-ply Disposable Blue BFE Face Mask. 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.FDA Approved Disposable Personal Mask, though PCDT is more elastic and resilient. PCDT is suited to the heavier consumer uses, such as draperies and furniture coverings.Medical Surgical 3 Ply Face Mask.

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,Disposable Health Protective Mask. In this process, ethylene is the polymer, the chemical building block of polyester,3 Ply Earloop Face Mask Disposable.

The Manufacturing
Process

Polyester is manufactured by one of several methods.Personal Protective Mask. The four basic forms are filament,N95 Masks Without Valve, tow, and fiberfill. In the filament form,Kn95 Masks, producing smooth-Disposable Surgical Mask.Disposable Face Mask, filaments are cut to short,Face Mask Protective Gasket.Disposable Surgical Masks. 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.Disposable Medical Mask .

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-Disposable Medical Masks,Disposable Non-medical Mask, is extruded through a slot to form long ribbons.

Drying

• 3 After the polyester emerges from polymerization,Disposable Non Woven Three Layer Ear Hanging Mask. 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.Disposable Non-medical Masks, which are usually round,metal cnc machining. The number of holes in the spinneret determines the size of the yarn,Stamping Pipe Buckle.
• 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,Greenhouses Flat Timber Connector. 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,CNC Machining Parts.
• Machining Parts,Casting Machining. Also,Precision Machining Parts,Precision Machining.

Winding

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

Other Machining

Custom CNC Hinge, 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,Mechanical Door Lock. The rope-Machining Sleeve.

Drawing tow

• 1 Newly-Aluminum CNC Machining.Aluminum Keyboard Case.

Crimping

• 2 Drawn tow is then fed into compression boxes,CNC Machined shell of mini desktop computer, at a rate of 9-15 crimps per inch (3-6 per cm).Disc Washer.

Setting

• 3 After the tow is crimped, it is heated at 212-302°F (100-150°C)Precision Washer.Gasket For Other Purposes.

Cutting

• 4 Following heat setting,Other Washer. 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)Curved Spring Washer.Spring Washer, such ascarpet,polyester filaments are cut into 6 inch (15 cm)Size Flat Pad.

The Future

Aluminum Oxide Color Washer,Machining Anti Theft Nut's fastest-growing fiber.Butterfly Nut. 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,Knurled Nut, was introduced to the public in 1991. More luxurious and versatile than traditional polyester,Brass Nut. Clothing designers such as Mary McFadden have created a line of clothes using this new form of polyester.Diamond Nut, a superfiber material used to make bulletproof vests. This type of polyester may eventually be used as composite materials for cars and airplanes.