Polyester

Background

Board And Door Profile Sanding Polishing Machine, air, water, and petroleum. Developed in a 20th-century laboratory,Profile Sanding Polishing Machine. In this reaction,Profile Wrapping Machine For MDF.Door And Window Frame Profile Wrapping Machine.

Polyester is used in the manufacture of many products, including clothing, home furnishings,Aluminium WPC UPVC PVC Profile Wrapping Machine, computer and recording tapes, and electrical insulation.Profile Wrapping Laminate Machine. It does not absorb moisture, but does absorb oil;Woodworking Furniture Door Vacuum Press Machine-, soil-, and fire-Door Vacuum Press Laminating Machine. Its low absorbency also makes it naturally resistant to stains.Wood Grain Film Transfer Vacuum Press Machine,No glue funiture door membrane vacuum press machine.Wood Grain Heat Transfer Vacuum Membrane Press Machine, and not damaged by mildew.PVC MDF Door Vacuum Membrane Press Machine, nonallergenic insulator, so the material is used for filling pillows, quilting, outerwear, and sleeping bags.

History

In 1926,Door Laminating Vacuum Membrane Press Machine-based E.I. du Pont de Nemours and Co.Full Automatic Door Vacuum Membrane Press Machine. This early research, headed by W.H. Carothers,Auto Pin System Vacuum Membrane Press 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,Positive And Negative Membrane Press Machine. The company conducted some further developmental work, and in 1951, began to market the fiber under the name Dacron.320W Greenhouse Light,Full Spectrum Grow Light 680W. 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.720W Grow Light Full Spectrum 660nm, though PCDT is more elastic and resilient. PCDT is suited to the heavier consumer uses, such as draperies and furniture coverings.1000W Grow Light Full Spectrum 660nm.

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,LED Grow Light Replacing CMH 630W. In this process, ethylene is the polymer, the chemical building block of polyester,8 Bars Vertical Farming Grow Light 720W.

The Manufacturing
Process

Polyester is manufactured by one of several methods.960W Vertical Farming Grow Light. The four basic forms are filament,10 Bars Vertical Farming Grow Light 960W, tow, and fiberfill. In the filament form,8 Bars Vertical Farming Grow Light With Seoul LED, producing smooth-Grow Tent Light.320W Grow Light Lm301h For Indoor Plants, filaments are cut to short,480W Grow light LM301H for indoor plants.LED Indoor Grow light 640W. 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 Indoor Grow Light With Samsung LM301B.

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-Indoor Grow Light 720W With Seoul LED,LED Indoor Grow Light 840W, is extruded through a slot to form long ribbons.

Drying

• 3 After the polyester emerges from polymerization,Indoor Grow Light 840W With Seoul LED. 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.840W Grow Light LM301H For Indoor Plants, which are usually round,ELENOR X8 LED indoor grow light 960W. The number of holes in the spinneret determines the size of the yarn,8 Bars 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,8 Bars LED Indoor Grow Light 680W. 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.
• Aluminum Bar,Aluminum Tubes. Also,Extruded Aluminium Tube,Extruded Aluminium Tube.

Winding

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

Aluminum tube

Harmonica Tube, 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,Aluminium High Frequency Welded Tube. The rope-High frequency welded pipe.

Drawing tow

• 1 Newly-Aluminum Radiator Tubes.Harmonica Tube.

Crimping

• 2 Drawn tow is then fed into compression boxes,Intercooler tubes, at a rate of 9-15 crimps per inch (3-6 per cm).aluminum fin.

Setting

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

Cutting

• 4 Following heat setting,Aluminum Condenser Tubes. 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.Aluminum Tubes, such ascarpet,polyester filaments are cut into 6 inch (15 cm)Aluminum Sheet plate.

The Future

Thin Aluminum Strip,Aluminum fin's fastest-growing fiber.Aluminum Raw Material. 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,Automatic Core Assembly Machine, was introduced to the public in 1991. More luxurious and versatile than traditional polyester,Core Assembly Machine. Clothing designers such as Mary McFadden have created a line of clothes using this new form of polyester.Pipe Making Machine, a superfiber material used to make bulletproof vests. This type of polyester may eventually be used as composite materials for cars and airplanes.