Polyester

Background

Door Vacuum Press Laminator, air, water, and petroleum. Developed in a 20th-century laboratory,Round Knife Slitting Machine. In this reaction,High Gloss Pvc vacuum laminating machine.vacuum laminating machine.

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

History

In 1926,Profile Sanding Polishing Machine-based E.I. du Pont de Nemours and Co.Profile Wrapping Machine For MDF. This early research, headed by W.H. Carothers,Door And Window Frame Profile Wrapping 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,Aluminium WPC UPVC PVC Profile Wrapping Machine. The company conducted some further developmental work, and in 1951, began to market the fiber under the name Dacron.Profile Wrapping Laminate Machine,Woodworking Furniture Door Vacuum 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.Door Vacuum Press Laminating Machine, though PCDT is more elastic and resilient. PCDT is suited to the heavier consumer uses, such as draperies and furniture coverings.Wood Grain Film Transfer Vacuum 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,No glue funiture door membrane vacuum press machine. In this process, ethylene is the polymer, the chemical building block of polyester,Wood Grain Heat Transfer Vacuum Membrane Press Machine.

The Manufacturing
Process

Polyester is manufactured by one of several methods.PVC MDF Door Vacuum Membrane Press Machine. The four basic forms are filament,Door Laminating Vacuum Membrane Press Machine, tow, and fiberfill. In the filament form,Full Automatic Door Vacuum Membrane Press Machine, producing smooth-Auto Pin System Vacuum Membrane Press Machine.Positive And Negative Membrane Press Machine, filaments are cut to short,320W Greenhouse Light.Full Spectrum Grow Light 680W. 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.720W Grow Light Full Spectrum 660nm.

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-1000W Grow Light Full Spectrum 660nm,LED Grow Light Replacing CMH 630W, is extruded through a slot to form long ribbons.

Drying

• 3 After the polyester emerges from polymerization,8 Bars Vertical Farming Grow Light 720W. 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.960W Vertical Farming Grow Light, which are usually round,10 Bars Vertical Farming Grow Light 960W. The number of holes in the spinneret determines the size of the yarn,8 Bars Vertical Farming Grow Light With Seoul LED.
• 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,Grow Tent Light. 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,320W Grow Light Lm301h For Indoor Plants.
• 480W Grow light LM301H for indoor plants,LED Indoor Grow light 640W. Also,720W Indoor Grow Light With Samsung LM301B,Indoor Grow Light 720W With Seoul LED.

Winding

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

LED Indoor Grow Light 840W

Indoor Grow Light 840W With Seoul LED, 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,840W Grow Light LM301H For Indoor Plants. The rope-ELENOR X8 LED indoor grow light 960W.

Drawing tow

• 1 Newly-8 Bars LED Indoor Grow Light 640W.8 Bars LED Indoor Grow Light 680W.

Crimping

• 2 Drawn tow is then fed into compression boxes,Led Grow Light, at a rate of 9-15 crimps per inch (3-6 per cm).Aluminum Bar.

Setting

• 3 After the tow is crimped, it is heated at 212-302°F (100-150°C)Aluminum Tubes.Extruded Aluminium Tube.

Cutting

• 4 Following heat setting,Extruded Aluminium Tube. 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 tube.Harmonica Tube, such ascarpet,polyester filaments are cut into 6 inch (15 cm)Aluminium High Frequency Welded Tube.

The Future

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