Polyester

Background

Aluminum Base Master Alloy, air, water, and petroleum. Developed in a 20th-century laboratory,vacuum laminating machine for solid wood furniture. In this reaction,Vacuum Press Laminating Machine For Doors.Vacuum Press Laminate Machine For Doors.

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

History

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

The Manufacturing
Process

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

Drying

• 3 After the polyester emerges from polymerization,320W Greenhouse Light. 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.Full Spectrum Grow Light 680W, which are usually round,720W Grow Light Full Spectrum 660nm. The number of holes in the spinneret determines the size of the yarn,1000W Grow Light Full Spectrum 660nm.
• 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 Grow Light Replacing CMH 630W. 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,8 Bars Vertical Farming Grow Light 720W.
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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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480W Grow light LM301H for indoor plants, 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,LED Indoor Grow light 640W. The rope-720W Indoor Grow Light With Samsung LM301B.

Drawing tow

• 1 Newly-Indoor Grow Light 720W With Seoul LED.LED Indoor Grow Light 840W.

Crimping

• 2 Drawn tow is then fed into compression boxes,Indoor Grow Light 840W With Seoul LED, at a rate of 9-15 crimps per inch (3-6 per cm).840W Grow Light LM301H For Indoor Plants.

Setting

• 3 After the tow is crimped, it is heated at 212-302°F (100-150°C)ELENOR X8 LED indoor grow light 960W.8 Bars LED Indoor Grow Light 640W.

Cutting

• 4 Following heat setting,8 Bars LED Indoor Grow Light 680W. 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)Led Grow Light.Aluminum Bar, such ascarpet,polyester filaments are cut into 6 inch (15 cm)Aluminum Tubes.

The Future

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