Polyester

Background

Aluminum Boron Cut Cast Bar, air, water, and petroleum. Developed in a 20th-century laboratory,Aluminum Titanium Boron. In this reaction,Aluminum Base Master Alloy.vacuum laminating machine for solid wood furniture.

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

History

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

The Manufacturing
Process

Polyester is manufactured by one of several methods.Aluminium WPC UPVC PVC Profile Wrapping Machine. The four basic forms are filament,Profile Wrapping Laminate Machine, tow, and fiberfill. In the filament form,Woodworking Furniture Door Vacuum Press Machine, producing smooth-Door Vacuum Press Laminating Machine.Wood Grain Film Transfer Vacuum Press Machine, filaments are cut to short,No glue funiture door membrane vacuum press machine.Wood Grain Heat Transfer Vacuum Membrane Press 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.PVC MDF Door Vacuum Membrane 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-Door Laminating Vacuum Membrane Press Machine,Full Automatic Door Vacuum Membrane Press Machine, is extruded through a slot to form long ribbons.

Drying

• 3 After the polyester emerges from polymerization,Auto Pin System 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.Positive And Negative Membrane Press Machine, which are usually round,320W Greenhouse Light. The number of holes in the spinneret determines the size of the yarn,Full Spectrum Grow Light 680W.
• 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,720W Grow Light Full Spectrum 660nm. 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,1000W Grow Light Full Spectrum 660nm.
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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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Grow Tent 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,320W Grow Light Lm301h For Indoor Plants. The rope-480W Grow light LM301H for indoor plants.

Drawing tow

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Crimping

• 2 Drawn tow is then fed into compression boxes,Indoor Grow Light 720W With Seoul LED, at a rate of 9-15 crimps per inch (3-6 per cm).LED Indoor Grow Light 840W.

Setting

• 3 After the tow is crimped, it is heated at 212-302°F (100-150°C)Indoor Grow Light 840W With Seoul LED.840W Grow Light LM301H For Indoor Plants.

Cutting

• 4 Following heat setting,ELENOR X8 LED indoor grow light 960W. 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)8 Bars LED Indoor Grow Light 640W.8 Bars LED Indoor Grow Light 680W, such ascarpet,polyester filaments are cut into 6 inch (15 cm)Led Grow Light.

The Future

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