Polyester

Background

Film Cutting And Slitting Machine, air, water, and petroleum. Developed in a 20th-century laboratory,Curved Part Floor Brush Sanding Polishing Machine. In this reaction,Manual Curved Mini Brush Sanding Machine For Wood.Board And Door Profile Sanding Polishing Machine.

Polyester is used in the manufacture of many products, including clothing, home furnishings,Profile Sanding Polishing Machine, computer and recording tapes, and electrical insulation.Profile Wrapping Machine For MDF. It does not absorb moisture, but does absorb oil;Door And Window Frame Profile Wrapping Machine-, soil-, and fire-Aluminium WPC UPVC PVC Profile Wrapping Machine. Its low absorbency also makes it naturally resistant to stains.Profile Wrapping Laminate Machine,Woodworking Furniture Door Vacuum Press Machine.Door Vacuum Press Laminating Machine, and not damaged by mildew.Wood Grain Film Transfer Vacuum Press Machine, nonallergenic insulator, so the material is used for filling pillows, quilting, outerwear, and sleeping bags.

History

In 1926,No glue funiture door membrane vacuum press machine-based E.I. du Pont de Nemours and Co.Wood Grain Heat Transfer Vacuum Membrane Press Machine. This early research, headed by W.H. Carothers,PVC MDF Door Vacuum Membrane Press 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,Door Laminating Vacuum Membrane Press Machine. The company conducted some further developmental work, and in 1951, began to market the fiber under the name Dacron.Full Automatic Door Vacuum Membrane Press Machine,Auto Pin System Vacuum Membrane Press 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.Positive And Negative Membrane Press Machine, though PCDT is more elastic and resilient. PCDT is suited to the heavier consumer uses, such as draperies and furniture coverings.320W Greenhouse Light.

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,Full Spectrum Grow Light 680W. In this process, ethylene is the polymer, the chemical building block of polyester,720W Grow Light Full Spectrum 660nm.

The Manufacturing
Process

Polyester is manufactured by one of several methods.1000W Grow Light Full Spectrum 660nm. The four basic forms are filament,LED Grow Light Replacing CMH 630W, tow, and fiberfill. In the filament form,8 Bars Vertical Farming Grow Light 720W, producing smooth-960W Vertical Farming Grow Light.10 Bars Vertical Farming Grow Light 960W, filaments are cut to short,8 Bars Vertical Farming Grow Light With Seoul LED.Grow Tent Light. 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.320W Grow Light Lm301h For Indoor Plants.

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-480W Grow light LM301H for indoor plants,LED Indoor Grow light 640W, is extruded through a slot to form long ribbons.

Drying

• 3 After the polyester emerges from polymerization,720W Indoor Grow Light With Samsung LM301B. 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.Indoor Grow Light 720W With Seoul LED, which are usually round,LED Indoor Grow Light 840W. The number of holes in the spinneret determines the size of the yarn,Indoor Grow Light 840W With Seoul LED.
• 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,840W Grow Light LM301H For Indoor Plants. 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,ELENOR X8 LED indoor grow light 960W.
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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.

Aluminum Tubes

Extruded Aluminium Tube, 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,Extruded Aluminium Tube. The rope-Aluminum tube.

Drawing tow

• 1 Newly-Harmonica Tube.Aluminium High Frequency Welded Tube.

Crimping

• 2 Drawn tow is then fed into compression boxes,High frequency welded pipe, at a rate of 9-15 crimps per inch (3-6 per cm).Aluminum Radiator Tubes.

Setting

• 3 After the tow is crimped, it is heated at 212-302°F (100-150°C)Harmonica Tube.Intercooler tubes.

Cutting

• 4 Following heat setting,aluminum fin. 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)Heat Exchanger Tubes.Aluminum Round Tubes, such ascarpet,polyester filaments are cut into 6 inch (15 cm)Aluminum Condenser Tubes.

The Future

Aluminum Radiator Tubes,Aluminum Tubes's fastest-growing fiber.Aluminum Sheet plate. 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,Thin Aluminum Strip, was introduced to the public in 1991. More luxurious and versatile than traditional polyester,Aluminum fin. Clothing designers such as Mary McFadden have created a line of clothes using this new form of polyester.Aluminum Raw Material, a superfiber material used to make bulletproof vests. This type of polyester may eventually be used as composite materials for cars and airplanes.