Polyester

Background

High Temperature Resistant EPDM Rubber Sheet, air, water, and petroleum. Developed in a 20th-century laboratory,Neoprene Rubber Sheet. In this reaction,NBR Rubber.Vulcanized SBR Rubber Sheet.

Polyester is used in the manufacture of many products, including clothing, home furnishings,SBR Rubber, computer and recording tapes, and electrical insulation.ni80flux. It does not absorb moisture, but does absorb oil;metal tablets-, soil-, and fire-mn80flux. Its low absorbency also makes it naturally resistant to stains.cu80al,cu80flux.drossing flux, and not damaged by mildew.modifying flux, nonallergenic insulator, so the material is used for filling pillows, quilting, outerwear, and sleeping bags.

History

In 1926,alsi50-based E.I. du Pont de Nemours and Co.drossing flux. This early research, headed by W.H. Carothers,altib, 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,master alloy. The company conducted some further developmental work, and in 1951, began to market the fiber under the name Dacron.Grain Refiner Aluminum titanium boron,STRONTIUM ALUMINUM ALLOY Sr90Al10. 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.Zinc Alloy Refining And Drossing Flux, though PCDT is more elastic and resilient. PCDT is suited to the heavier consumer uses, such as draperies and furniture coverings.Furance Cleaning Flux.

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,Sodium Remover Flux. In this process, ethylene is the polymer, the chemical building block of polyester,Aluminum Rare Earth Waffle.

The Manufacturing
Process

Polyester is manufactured by one of several methods.Aluminum Rare Earth. The four basic forms are filament,Aluminum Bismuth Waffle, tow, and fiberfill. In the filament form,Aluminum Bismuth, producing smooth-Aluminum Chromium Waffle.Aluminum Chromium, filaments are cut to short,Aluminum Zirconium Cut Cast Bar.Aluminum Boron Cut Cast Bar. 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.Aluminum Titanium Boron.

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-Aluminum Base Master Alloy,vacuum laminating machine for solid wood furniture, is extruded through a slot to form long ribbons.

Drying

• 3 After the polyester emerges from polymerization,Vacuum Press Laminating Machine For Doors. 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.Vacuum Press Laminate Machine For Doors, which are usually round,Door Vacuum Press Laminate machine. The number of holes in the spinneret determines the size of the yarn,Door Vacuum Press Laminator.
• 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,Round Knife Slitting 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,High Gloss Pvc vacuum laminating machine.
• vacuum laminating machine,Laminate Film Cutting And Slitting Machine. Also,Wrapping Film Cutting And Slitting Machine,Multifunction Slitting Machine.

Winding

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

Round Knife Film Cutting And Slitting Machine

Film Cutting And Slitting Machine, 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,Curved Part Floor Brush Sanding Polishing Machine. The rope-Manual Curved Mini Brush Sanding Machine For Wood.

Drawing tow

• 1 Newly-Board And Door Profile Sanding Polishing Machine.Profile Sanding Polishing Machine.

Crimping

• 2 Drawn tow is then fed into compression boxes,Profile Wrapping Machine For MDF, at a rate of 9-15 crimps per inch (3-6 per cm).Door And Window Frame Profile Wrapping Machine.

Setting

• 3 After the tow is crimped, it is heated at 212-302°F (100-150°C)Aluminium WPC UPVC PVC Profile Wrapping Machine.Profile Wrapping Laminate Machine.

Cutting

• 4 Following heat setting,Woodworking Furniture Door Vacuum Press Machine. 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)Door Vacuum Press Laminating Machine.Wood Grain Film Transfer Vacuum Press Machine, such ascarpet,polyester filaments are cut into 6 inch (15 cm)No glue funiture door membrane vacuum press machine.

The Future

Wood Grain Heat Transfer Vacuum Membrane Press Machine,PVC MDF Door Vacuum Membrane Press Machine's fastest-growing fiber.Door Laminating Vacuum Membrane Press 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,Full Automatic Door Vacuum Membrane Press Machine, was introduced to the public in 1991. More luxurious and versatile than traditional polyester,Auto Pin System Vacuum Membrane Press Machine. Clothing designers such as Mary McFadden have created a line of clothes using this new form of polyester.Positive And Negative Membrane Press Machine, a superfiber material used to make bulletproof vests. This type of polyester may eventually be used as composite materials for cars and airplanes.