Polyester

Background

Multifunction Slitting Machine, air, water, and petroleum. Developed in a 20th-century laboratory,Round Knife Film Cutting And Slitting Machine. In this reaction,Film Cutting And Slitting Machine.Curved Part Floor Brush Sanding Polishing Machine.

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

History

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

The Manufacturing
Process

Polyester is manufactured by one of several methods.Full Spectrum Grow Light 680W. The four basic forms are filament,720W Grow Light Full Spectrum 660nm, tow, and fiberfill. In the filament form,1000W Grow Light Full Spectrum 660nm, producing smooth-LED Grow Light Replacing CMH 630W.8 Bars Vertical Farming Grow Light 720W, filaments are cut to short,960W Vertical Farming Grow Light.10 Bars Vertical Farming Grow Light 960W. 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.8 Bars Vertical Farming Grow Light With Seoul LED.

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-Grow Tent Light,320W Grow Light Lm301h For Indoor Plants, is extruded through a slot to form long ribbons.

Drying

• 3 After the polyester emerges from polymerization,480W Grow light LM301H for indoor plants. 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.LED Indoor Grow light 640W, which are usually round,720W Indoor Grow Light With Samsung LM301B. The number of holes in the spinneret determines the size of the yarn,Indoor Grow Light 720W 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,LED Indoor Grow Light 840W. 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,Indoor Grow Light 840W With Seoul LED.
• 840W Grow Light LM301H For Indoor Plants,ELENOR X8 LED indoor grow light 960W. Also,8 Bars LED Indoor Grow Light 640W,8 Bars LED Indoor Grow Light 680W.

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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Aluminum Bar, 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,Aluminum Tubes. The rope-Extruded Aluminium Tube.

Drawing tow

• 1 Newly-Extruded Aluminium Tube.Aluminum tube.

Crimping

• 2 Drawn tow is then fed into compression boxes,Harmonica Tube, at a rate of 9-15 crimps per inch (3-6 per cm).Aluminium High Frequency Welded Tube.

Setting

• 3 After the tow is crimped, it is heated at 212-302°F (100-150°C)High frequency welded pipe.Aluminum Radiator Tubes.

Cutting

• 4 Following heat setting,Harmonica Tube. 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)Intercooler tubes.aluminum fin, such ascarpet,polyester filaments are cut into 6 inch (15 cm)Heat Exchanger Tubes.

The Future

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