Polyester

Background

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

Polyester is used in the manufacture of many products, including clothing, home furnishings,ni80flux, computer and recording tapes, and electrical insulation.metal tablets. It does not absorb moisture, but does absorb oil;mn80flux-, soil-, and fire-cu80al. Its low absorbency also makes it naturally resistant to stains.cu80flux,drossing flux.modifying flux, and not damaged by mildew.alsi50, nonallergenic insulator, so the material is used for filling pillows, quilting, outerwear, and sleeping bags.

History

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

The Manufacturing
Process

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

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-vacuum laminating machine for solid wood furniture,Vacuum Press Laminating Machine For Doors, is extruded through a slot to form long ribbons.

Drying

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

Film Cutting And Slitting Machine

Curved Part Floor Brush Sanding Polishing 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,Manual Curved Mini Brush Sanding Machine For Wood. The rope-Board And Door Profile Sanding Polishing Machine.

Drawing tow

• 1 Newly-Profile Sanding Polishing Machine.Profile Wrapping Machine For MDF.

Crimping

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

Setting

• 3 After the tow is crimped, it is heated at 212-302°F (100-150°C)Profile Wrapping Laminate Machine.Woodworking Furniture Door Vacuum Press Machine.

Cutting

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

The Future

PVC MDF Door Vacuum Membrane Press Machine,Door Laminating Vacuum Membrane Press Machine's fastest-growing fiber.Full Automatic Door 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,Auto Pin System Vacuum Membrane Press Machine, was introduced to the public in 1991. More luxurious and versatile than traditional polyester,Positive And Negative Membrane Press Machine. Clothing designers such as Mary McFadden have created a line of clothes using this new form of polyester.320W Greenhouse Light, a superfiber material used to make bulletproof vests. This type of polyester may eventually be used as composite materials for cars and airplanes.