Polyester

Background

Aluminum Chromium Waffle, air, water, and petroleum. Developed in a 20th-century laboratory,Aluminum Chromium. In this reaction,Aluminum Zirconium Cut Cast Bar.Aluminum Boron Cut Cast Bar.

Polyester is used in the manufacture of many products, including clothing, home furnishings,Aluminum Titanium Boron, computer and recording tapes, and electrical insulation.Aluminum Base Master Alloy. It does not absorb moisture, but does absorb oil;vacuum laminating machine for solid wood furniture-, soil-, and fire-Vacuum Press Laminating Machine For Doors. Its low absorbency also makes it naturally resistant to stains.Vacuum Press Laminate Machine For Doors,Door Vacuum Press Laminate machine.Door Vacuum Press Laminator, and not damaged by mildew.Round Knife Slitting Machine, nonallergenic insulator, so the material is used for filling pillows, quilting, outerwear, and sleeping bags.

History

In 1926,High Gloss Pvc vacuum laminating machine-based E.I. du Pont de Nemours and Co.vacuum laminating machine. This early research, headed by W.H. Carothers,Laminate Film Cutting And Slitting 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,Wrapping Film Cutting And Slitting Machine. The company conducted some further developmental work, and in 1951, began to market the fiber under the name Dacron.Multifunction Slitting Machine,Round Knife Film Cutting And Slitting 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.Film Cutting And Slitting Machine, though PCDT is more elastic and resilient. PCDT is suited to the heavier consumer uses, such as draperies and furniture coverings.Curved Part Floor Brush Sanding Polishing 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,Manual Curved Mini Brush Sanding Machine For Wood. In this process, ethylene is the polymer, the chemical building block of polyester,Board And Door Profile Sanding Polishing Machine.

The Manufacturing
Process

Polyester is manufactured by one of several methods.Profile Sanding Polishing Machine. The four basic forms are filament,Profile Wrapping Machine For MDF, tow, and fiberfill. In the filament form,Door And Window Frame Profile Wrapping Machine, producing smooth-Aluminium WPC UPVC PVC Profile Wrapping Machine.Profile Wrapping Laminate Machine, filaments are cut to short,Woodworking Furniture Door Vacuum Press Machine.Door Vacuum Press Laminating Machine. 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.Wood Grain Film Transfer Vacuum Press Machine.

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-No glue funiture door membrane vacuum press machine,Wood Grain Heat Transfer Vacuum Membrane Press Machine, is extruded through a slot to form long ribbons.

Drying

• 3 After the polyester emerges from polymerization,PVC MDF Door Vacuum Membrane Press Machine. 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.Door Laminating Vacuum Membrane Press Machine, which are usually round,Full Automatic Door Vacuum Membrane Press Machine. The number of holes in the spinneret determines the size of the yarn,Auto Pin System Vacuum Membrane Press Machine.
• 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,Positive And Negative Membrane Press Machine. 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,320W Greenhouse Light.
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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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960W Vertical Farming Grow Light, 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,10 Bars Vertical Farming Grow Light 960W. The rope-8 Bars Vertical Farming Grow Light With Seoul LED.

Drawing tow

• 1 Newly-Grow Tent Light.320W Grow Light Lm301h For Indoor Plants.

Crimping

• 2 Drawn tow is then fed into compression boxes,480W Grow light LM301H for indoor plants, at a rate of 9-15 crimps per inch (3-6 per cm).LED Indoor Grow light 640W.

Setting

• 3 After the tow is crimped, it is heated at 212-302°F (100-150°C)720W Indoor Grow Light With Samsung LM301B.Indoor Grow Light 720W With Seoul LED.

Cutting

• 4 Following heat setting,LED Indoor Grow Light 840W. 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)Indoor Grow Light 840W With Seoul LED.840W Grow Light LM301H For Indoor Plants, such ascarpet,polyester filaments are cut into 6 inch (15 cm)ELENOR X8 LED indoor grow light 960W.

The Future

8 Bars LED Indoor Grow Light 640W,8 Bars LED Indoor Grow Light 680W's fastest-growing fiber.Led Grow Light. 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,Aluminum Bar, was introduced to the public in 1991. More luxurious and versatile than traditional polyester,Aluminum Tubes. Clothing designers such as Mary McFadden have created a line of clothes using this new form of polyester.Extruded Aluminium Tube, a superfiber material used to make bulletproof vests. This type of polyester may eventually be used as composite materials for cars and airplanes.