Polyester

Background

Laminate Film Cutting And Slitting Machine, air, water, and petroleum. Developed in a 20th-century laboratory,Wrapping Film Cutting And Slitting Machine. In this reaction,Multifunction Slitting Machine.Round Knife Film Cutting And Slitting Machine.

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

History

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

The Manufacturing
Process

Polyester is manufactured by one of several methods.Positive And Negative Membrane Press Machine. The four basic forms are filament,320W Greenhouse Light, tow, and fiberfill. In the filament form,Full Spectrum Grow Light 680W, producing smooth-720W Grow Light Full Spectrum 660nm.1000W Grow Light Full Spectrum 660nm, filaments are cut to short,LED Grow Light Replacing CMH 630W.8 Bars Vertical Farming Grow Light 720W. 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.960W Vertical Farming Grow 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-10 Bars Vertical Farming Grow Light 960W,8 Bars Vertical Farming Grow Light With Seoul LED, is extruded through a slot to form long ribbons.

Drying

• 3 After the polyester emerges from polymerization,Grow Tent 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.320W Grow Light Lm301h For Indoor Plants, which are usually round,480W Grow light LM301H for indoor plants. The number of holes in the spinneret determines the size of the yarn,LED Indoor Grow light 640W.
• 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 Indoor Grow Light With Samsung LM301B. 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,Indoor Grow Light 720W With Seoul LED.
• LED Indoor Grow Light 840W,Indoor Grow Light 840W With Seoul LED. Also,840W Grow Light LM301H For Indoor Plants,ELENOR X8 LED indoor grow light 960W.

Winding

• 8 After the polyester yarn is drawn, it is wound on large bobbins or flat-wound packages, ready to be woven into material.

8 Bars LED Indoor Grow Light 640W

8 Bars LED Indoor Grow Light 680W, 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 Grow Light. The rope-Aluminum Bar.

Drawing tow

• 1 Newly-Aluminum Tubes.Extruded Aluminium Tube.

Crimping

• 2 Drawn tow is then fed into compression boxes,Extruded Aluminium Tube, at a rate of 9-15 crimps per inch (3-6 per cm).Aluminum tube.

Setting

• 3 After the tow is crimped, it is heated at 212-302°F (100-150°C)Harmonica Tube.Aluminium High Frequency Welded Tube.

Cutting

• 4 Following heat setting,High frequency welded pipe. 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 Radiator Tubes.Harmonica Tube, such ascarpet,polyester filaments are cut into 6 inch (15 cm)Intercooler tubes.

The Future

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