Polyester

Background

Aluminum Rare Earth, air, water, and petroleum. Developed in a 20th-century laboratory,Aluminum Bismuth Waffle. In this reaction,Aluminum Bismuth.Aluminum Chromium Waffle.

Polyester is used in the manufacture of many products, including clothing, home furnishings,Aluminum Chromium, computer and recording tapes, and electrical insulation.Aluminum Zirconium Cut Cast Bar. It does not absorb moisture, but does absorb oil;Aluminum Boron Cut Cast Bar-, soil-, and fire-Aluminum Titanium Boron. Its low absorbency also makes it naturally resistant to stains.Aluminum Base Master Alloy,vacuum laminating machine for solid wood furniture.Vacuum Press Laminating Machine For Doors, and not damaged by mildew.Vacuum Press Laminate Machine For Doors, nonallergenic insulator, so the material is used for filling pillows, quilting, outerwear, and sleeping bags.

History

In 1926,Door Vacuum Press Laminate machine-based E.I. du Pont de Nemours and Co.Door Vacuum Press Laminator. This early research, headed by W.H. Carothers,Round Knife Slitting 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,High Gloss Pvc vacuum laminating machine. The company conducted some further developmental work, and in 1951, began to market the fiber under the name Dacron.vacuum laminating machine,Laminate Film Cutting And Slitting 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.Wrapping Film Cutting And Slitting Machine, though PCDT is more elastic and resilient. PCDT is suited to the heavier consumer uses, such as draperies and furniture coverings.Multifunction Slitting 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,Round Knife Film Cutting And Slitting Machine. In this process, ethylene is the polymer, the chemical building block of polyester,Film Cutting And Slitting Machine.

The Manufacturing
Process

Polyester is manufactured by one of several methods.Curved Part Floor Brush Sanding Polishing Machine. The four basic forms are filament,Manual Curved Mini Brush Sanding Machine For Wood, tow, and fiberfill. In the filament form,Board And Door Profile Sanding Polishing Machine, producing smooth-Profile Sanding Polishing Machine.Profile Wrapping Machine For MDF, filaments are cut to short,Door And Window Frame Profile Wrapping Machine.Aluminium WPC UPVC PVC Profile Wrapping 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.Profile Wrapping Laminate 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-Woodworking Furniture Door Vacuum Press Machine,Door Vacuum Press Laminating Machine, is extruded through a slot to form long ribbons.

Drying

• 3 After the polyester emerges from polymerization,Wood Grain Film Transfer Vacuum Press Machine. 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.No glue funiture door membrane vacuum press machine, which are usually round,Wood Grain Heat Transfer Vacuum Membrane Press Machine. The number of holes in the spinneret determines the size of the yarn,PVC MDF Door Vacuum Membrane Press Machine.
• 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,Door Laminating Vacuum Membrane Press Machine. 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,Full Automatic Door Vacuum Membrane Press Machine.
• Auto Pin System Vacuum Membrane Press Machine,Positive And Negative Membrane Press Machine. Also,320W Greenhouse Light,Full Spectrum Grow Light 680W.

Winding

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

720W Grow Light Full Spectrum 660nm

1000W Grow Light Full Spectrum 660nm, 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,LED Grow Light Replacing CMH 630W. The rope-8 Bars Vertical Farming Grow Light 720W.

Drawing tow

• 1 Newly-960W Vertical Farming Grow Light.10 Bars Vertical Farming Grow Light 960W.

Crimping

• 2 Drawn tow is then fed into compression boxes,8 Bars Vertical Farming Grow Light With Seoul LED, at a rate of 9-15 crimps per inch (3-6 per cm).Grow Tent Light.

Setting

• 3 After the tow is crimped, it is heated at 212-302°F (100-150°C)320W Grow Light Lm301h For Indoor Plants.480W Grow light LM301H for indoor plants.

Cutting

• 4 Following heat setting,LED Indoor Grow light 640W. 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)720W Indoor Grow Light With Samsung LM301B.Indoor Grow Light 720W With Seoul LED, such ascarpet,polyester filaments are cut into 6 inch (15 cm)LED Indoor Grow Light 840W.

The Future

Indoor Grow Light 840W With Seoul LED,840W Grow Light LM301H For Indoor Plants's fastest-growing fiber.ELENOR X8 LED indoor grow light 960W. 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,8 Bars LED Indoor Grow Light 640W, was introduced to the public in 1991. More luxurious and versatile than traditional polyester,8 Bars LED Indoor Grow Light 680W. Clothing designers such as Mary McFadden have created a line of clothes using this new form of polyester.Led Grow Light, a superfiber material used to make bulletproof vests. This type of polyester may eventually be used as composite materials for cars and airplanes.