Polyester

Background

Vacuum Press Laminating Machine For Doors, air, water, and petroleum. Developed in a 20th-century laboratory,Vacuum Press Laminate Machine For Doors. In this reaction,Door Vacuum Press Laminate machine.Door Vacuum Press Laminator.

Polyester is used in the manufacture of many products, including clothing, home furnishings,Round Knife Slitting Machine, computer and recording tapes, and electrical insulation.High Gloss Pvc vacuum laminating machine. It does not absorb moisture, but does absorb oil;vacuum laminating machine-, soil-, and fire-Laminate Film Cutting And Slitting Machine. Its low absorbency also makes it naturally resistant to stains.Wrapping Film Cutting And Slitting Machine,Multifunction Slitting Machine.Round Knife Film Cutting And Slitting Machine, and not damaged by mildew.Film Cutting And Slitting Machine, nonallergenic insulator, so the material is used for filling pillows, quilting, outerwear, and sleeping bags.

History

In 1926,Curved Part Floor Brush Sanding Polishing Machine-based E.I. du Pont de Nemours and Co.Manual Curved Mini Brush Sanding Machine For Wood. This early research, headed by W.H. Carothers,Board And Door Profile Sanding Polishing 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,Profile Sanding Polishing Machine. The company conducted some further developmental work, and in 1951, began to market the fiber under the name Dacron.Profile Wrapping Machine For MDF,Door And Window Frame Profile Wrapping 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.Aluminium WPC UPVC PVC Profile Wrapping Machine, though PCDT is more elastic and resilient. PCDT is suited to the heavier consumer uses, such as draperies and furniture coverings.Profile Wrapping Laminate 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,Woodworking Furniture Door Vacuum Press Machine. In this process, ethylene is the polymer, the chemical building block of polyester,Door Vacuum Press Laminating Machine.

The Manufacturing
Process

Polyester is manufactured by one of several methods.Wood Grain Film Transfer Vacuum Press Machine. The four basic forms are filament,No glue funiture door membrane vacuum press machine, tow, and fiberfill. In the filament form,Wood Grain Heat Transfer Vacuum Membrane Press Machine, producing smooth-PVC MDF Door Vacuum Membrane Press Machine.Door Laminating Vacuum Membrane Press Machine, filaments are cut to short,Full Automatic Door Vacuum Membrane Press Machine.Auto Pin System Vacuum Membrane Press Machine. 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.Positive And Negative Membrane Press Machine.

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-320W Greenhouse Light,Full Spectrum Grow Light 680W, is extruded through a slot to form long ribbons.

Drying

• 3 After the polyester emerges from polymerization,720W Grow Light Full Spectrum 660nm. 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.1000W Grow Light Full Spectrum 660nm, which are usually round,LED Grow Light Replacing CMH 630W. The number of holes in the spinneret determines the size of the yarn,8 Bars Vertical Farming Grow Light 720W.
• 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,960W Vertical Farming Grow 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,10 Bars Vertical Farming Grow Light 960W.
• 8 Bars Vertical Farming Grow Light With Seoul LED,Grow Tent Light. Also,320W Grow Light Lm301h For Indoor Plants,480W Grow light LM301H for indoor plants.

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 640W

720W Indoor Grow Light With Samsung LM301B, 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,Indoor Grow Light 720W With Seoul LED. The rope-LED Indoor Grow Light 840W.

Drawing tow

• 1 Newly-Indoor Grow Light 840W With Seoul LED.840W Grow Light LM301H For Indoor Plants.

Crimping

• 2 Drawn tow is then fed into compression boxes,ELENOR X8 LED indoor grow light 960W, at a rate of 9-15 crimps per inch (3-6 per cm).8 Bars LED Indoor Grow Light 640W.

Setting

• 3 After the tow is crimped, it is heated at 212-302°F (100-150°C)8 Bars LED Indoor Grow Light 680W.Led Grow Light.

Cutting

• 4 Following heat setting,Aluminum Bar. 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 Tubes.Extruded Aluminium Tube, such ascarpet,polyester filaments are cut into 6 inch (15 cm)Extruded Aluminium Tube.

The Future

Aluminum tube,Harmonica Tube's fastest-growing fiber.Aluminium High Frequency Welded 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,High frequency welded pipe, was introduced to the public in 1991. More luxurious and versatile than traditional polyester,Aluminum Radiator Tubes. Clothing designers such as Mary McFadden have created a line of clothes using this new form of polyester.Harmonica Tube, a superfiber material used to make bulletproof vests. This type of polyester may eventually be used as composite materials for cars and airplanes.