Polyester

Background

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

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

History

In 1926,Wood Grain Film Transfer Vacuum Press Machine-based E.I. du Pont de Nemours and Co.No glue funiture door membrane vacuum press machine. This early research, headed by W.H. Carothers,Wood Grain Heat Transfer 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,PVC MDF Door Vacuum Membrane Press Machine. The company conducted some further developmental work, and in 1951, began to market the fiber under the name Dacron.Door Laminating Vacuum Membrane Press Machine,Full Automatic Door 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.Auto Pin System 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.Positive And Negative 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,320W Greenhouse Light. In this process, ethylene is the polymer, the chemical building block of polyester,Full Spectrum Grow Light 680W.

The Manufacturing
Process

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

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-320W Grow Light Lm301h For Indoor Plants,480W Grow light LM301H for indoor plants, is extruded through a slot to form long ribbons.

Drying

• 3 After the polyester emerges from polymerization,LED Indoor Grow light 640W. 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.720W Indoor Grow Light With Samsung LM301B, which are usually round,Indoor Grow Light 720W With Seoul LED. The number of holes in the spinneret determines the size of the yarn,LED Indoor Grow Light 840W.
• 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,Indoor Grow Light 840W With Seoul LED. 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,840W Grow Light LM301H For Indoor Plants.
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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 Bar

Aluminum Tubes, 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-Extruded Aluminium Tube.

Drawing tow

• 1 Newly-Aluminum tube.Harmonica Tube.

Crimping

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

Setting

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

Cutting

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

The Future

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