Polyester

Background

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

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

History

In 1926,Multifunction Slitting Machine-based E.I. du Pont de Nemours and Co.Round Knife Film Cutting And Slitting Machine. This early research, headed by W.H. Carothers,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,Curved Part Floor Brush Sanding Polishing Machine. The company conducted some further developmental work, and in 1951, began to market the fiber under the name Dacron.Manual Curved Mini Brush Sanding Machine For Wood,Board And Door 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 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 Wrapping Machine For MDF.

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,Door And Window Frame Profile Wrapping Machine. In this process, ethylene is the polymer, the chemical building block of polyester,Aluminium WPC UPVC PVC Profile Wrapping Machine.

The Manufacturing
Process

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

Drying

• 3 After the polyester emerges from polymerization,Positive And Negative 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.320W Greenhouse Light, which are usually round,Full Spectrum Grow Light 680W. The number of holes in the spinneret determines the size of the yarn,720W 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,1000W 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,LED Grow Light Replacing CMH 630W.
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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.

Grow Tent Light

320W 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,480W Grow light LM301H for indoor plants. The rope-LED Indoor Grow light 640W.

Drawing tow

• 1 Newly-720W Indoor Grow Light With Samsung LM301B.Indoor Grow Light 720W With Seoul LED.

Crimping

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

Setting

• 3 After the tow is crimped, it is heated at 212-302°F (100-150°C)840W Grow Light LM301H For Indoor Plants.ELENOR X8 LED indoor grow light 960W.

Cutting

• 4 Following heat setting,8 Bars LED Indoor Grow Light 640W. 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 680W.Led Grow Light, such ascarpet,polyester filaments are cut into 6 inch (15 cm)Aluminum Bar.

The Future

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