Polyester

Background

Profile Wrapping Laminate Machine, air, water, and petroleum. Developed in a 20th-century laboratory,Woodworking Furniture Door Vacuum Press Machine. In this reaction,Door Vacuum Press Laminating Machine.Wood Grain Film Transfer Vacuum Press Machine.

Polyester is used in the manufacture of many products, including clothing, home furnishings,No glue funiture door membrane vacuum press machine, computer and recording tapes, and electrical insulation.Wood Grain Heat Transfer Vacuum Membrane Press Machine. It does not absorb moisture, but does absorb oil;PVC MDF Door Vacuum Membrane Press Machine-, soil-, and fire-Door Laminating Vacuum Membrane Press Machine. Its low absorbency also makes it naturally resistant to stains.Full Automatic Door Vacuum Membrane Press Machine,Auto Pin System Vacuum Membrane Press Machine.Positive And Negative Membrane Press Machine, and not damaged by mildew.320W Greenhouse Light, nonallergenic insulator, so the material is used for filling pillows, quilting, outerwear, and sleeping bags.

History

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

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,Grow Tent Light. In this process, ethylene is the polymer, the chemical building block of polyester,320W Grow Light Lm301h For Indoor Plants.

The Manufacturing
Process

Polyester is manufactured by one of several methods.480W Grow light LM301H for indoor plants. The four basic forms are filament,LED Indoor Grow light 640W, tow, and fiberfill. In the filament form,720W Indoor Grow Light With Samsung LM301B, producing smooth-Indoor Grow Light 720W With Seoul LED.LED Indoor Grow Light 840W, filaments are cut to short,Indoor Grow Light 840W With Seoul LED.840W Grow Light LM301H For Indoor Plants. 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.ELENOR X8 LED indoor grow light 960W.

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-8 Bars LED Indoor Grow Light 640W,8 Bars LED Indoor Grow Light 680W, is extruded through a slot to form long ribbons.

Drying

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

Winding

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

Harmonica Tube

Intercooler 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,aluminum fin. The rope-Heat Exchanger Tubes.

Drawing tow

• 1 Newly-Aluminum Round Tubes.Aluminum Condenser Tubes.

Crimping

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

Setting

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

Cutting

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

The Future

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