Polyester

Background

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

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

History

In 1926,320W Greenhouse Light-based E.I. du Pont de Nemours and Co.Full Spectrum Grow Light 680W. This early research, headed by W.H. Carothers,720W Grow Light Full Spectrum 660nm, 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 1946,1000W Grow Light Full Spectrum 660nm. The company conducted some further developmental work, and in 1951, began to market the fiber under the name Dacron.LED Grow Light Replacing CMH 630W,8 Bars Vertical Farming Grow Light 720W. 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.960W Vertical Farming Grow Light, though PCDT is more elastic and resilient. PCDT is suited to the heavier consumer uses, such as draperies and furniture coverings.10 Bars Vertical Farming Grow Light 960W.

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

The Manufacturing
Process

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

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-ELENOR X8 LED indoor grow light 960W,8 Bars LED Indoor Grow Light 640W, is extruded through a slot to form long ribbons.

Drying

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

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 Radiator Tubes

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,Intercooler tubes. The rope-aluminum fin.

Drawing tow

• 1 Newly-Heat Exchanger Tubes.Aluminum Round Tubes.

Crimping

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

Setting

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

Cutting

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

The Future

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