Polyester

Background

Door And Window Frame Profile Wrapping Machine, air, water, and petroleum. Developed in a 20th-century laboratory,Aluminium WPC UPVC PVC Profile Wrapping Machine. In this reaction,Profile Wrapping Laminate Machine.Woodworking Furniture Door Vacuum Press Machine.

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

History

In 1926,Positive And Negative Membrane Press Machine-based E.I. du Pont de Nemours and Co.320W Greenhouse Light. This early research, headed by W.H. Carothers,Full Spectrum Grow Light 680W, 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 1946,720W Grow Light Full Spectrum 660nm. The company conducted some further developmental work, and in 1951, began to market the fiber under the name Dacron.1000W Grow Light Full Spectrum 660nm,LED Grow Light Replacing CMH 630W. 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.8 Bars Vertical Farming Grow Light 720W, though PCDT is more elastic and resilient. PCDT is suited to the heavier consumer uses, such as draperies and furniture coverings.960W Vertical Farming Grow Light.

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,10 Bars Vertical Farming Grow Light 960W. In this process, ethylene is the polymer, the chemical building block of polyester,8 Bars Vertical Farming Grow Light With Seoul LED.

The Manufacturing
Process

Polyester is manufactured by one of several methods.Grow Tent Light. The four basic forms are filament,320W Grow Light Lm301h For Indoor Plants, tow, and fiberfill. In the filament form,480W Grow light LM301H for indoor plants, producing smooth-LED Indoor Grow light 640W.720W Indoor Grow Light With Samsung LM301B, filaments are cut to short,Indoor Grow Light 720W With Seoul LED.LED Indoor Grow Light 840W. 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.Indoor Grow Light 840W With Seoul LED.

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-840W Grow Light LM301H For Indoor Plants,ELENOR X8 LED indoor grow light 960W, is extruded through a slot to form long ribbons.

Drying

• 3 After the polyester emerges from polymerization,8 Bars LED Indoor Grow Light 640W. 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.8 Bars LED Indoor Grow Light 680W, which are usually round,Led Grow Light. The number of holes in the spinneret determines the size of the yarn,Aluminum Bar.
• 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,Aluminum Tubes. 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,Extruded Aluminium Tube.
• Extruded Aluminium Tube,Aluminum tube. Also,Harmonica Tube,Aluminium High Frequency Welded 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.

High frequency welded pipe

Aluminum Radiator Tubes, 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,Harmonica Tube. The rope-Intercooler tubes.

Drawing tow

• 1 Newly-aluminum fin.Heat Exchanger Tubes.

Crimping

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

Setting

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

Cutting

• 4 Following heat setting,Aluminum Sheet plate. 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)Thin Aluminum Strip.Aluminum fin, such ascarpet,polyester filaments are cut into 6 inch (15 cm)Aluminum Raw Material.

The Future

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