Polyester

Background

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

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

History

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

The Manufacturing
Process

Polyester is manufactured by one of several methods.Door Vacuum Press Laminating Machine. The four basic forms are filament,Wood Grain Film Transfer Vacuum Press Machine, tow, and fiberfill. In the filament form,No glue funiture door membrane vacuum press machine, producing smooth-Wood Grain Heat Transfer Vacuum Membrane Press Machine.PVC MDF Door Vacuum Membrane Press Machine, filaments are cut to short,Door Laminating Vacuum Membrane Press Machine.Full Automatic Door 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.Auto Pin System 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-Positive And Negative Membrane Press Machine,320W Greenhouse Light, is extruded through a slot to form long ribbons.

Drying

• 3 After the polyester emerges from polymerization,Full Spectrum Grow Light 680W. 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 Grow Light Full Spectrum 660nm, which are usually round,1000W Grow Light Full Spectrum 660nm. The number of holes in the spinneret determines the size of the yarn,LED Grow Light Replacing CMH 630W.
• 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,8 Bars Vertical Farming Grow Light 720W. 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,960W Vertical Farming Grow Light.
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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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LED Indoor Grow light 640W, 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,720W Indoor Grow Light With Samsung LM301B. The rope-Indoor Grow Light 720W With Seoul LED.

Drawing tow

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

Crimping

• 2 Drawn tow is then fed into compression boxes,840W Grow Light LM301H For Indoor Plants, at a rate of 9-15 crimps per inch (3-6 per cm).ELENOR X8 LED indoor grow light 960W.

Setting

• 3 After the tow is crimped, it is heated at 212-302°F (100-150°C)8 Bars LED Indoor Grow Light 640W.8 Bars LED Indoor Grow Light 680W.

Cutting

• 4 Following heat setting,Led Grow Light. 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 Bar.Aluminum Tubes, such ascarpet,polyester filaments are cut into 6 inch (15 cm)Extruded Aluminium Tube.

The Future

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