Polyester

Background

Black Oil Resistant NBR Rubber Sheet, air, water, and petroleum. Developed in a 20th-century laboratory,NBR Rubber Sheet Manufacturer. In this reaction,Black Nitrile Rubber Sheet.High Temperature Resistant EPDM Rubber Sheet.

Polyester is used in the manufacture of many products, including clothing, home furnishings,Industrial Heat Resistant Viton Rubber Sheet, computer and recording tapes, and electrical insulation.FKM Rubber Sheet. It does not absorb moisture, but does absorb oil;Viton Rubber-, soil-, and fire-FKM Rubber Sheeting. Its low absorbency also makes it naturally resistant to stains.High Temperature Resistant EPDM Rubber Sheet,Neoprene Rubber Sheet.NBR Rubber, and not damaged by mildew.Vulcanized SBR Rubber Sheet, nonallergenic insulator, so the material is used for filling pillows, quilting, outerwear, and sleeping bags.

History

In 1926,SBR Rubber-based E.I. du Pont de Nemours and Co.ni80flux. This early research, headed by W.H. Carothers,metal tablets, 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,mn80flux. The company conducted some further developmental work, and in 1951, began to market the fiber under the name Dacron.cu80al,cu80flux. 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.drossing flux, though PCDT is more elastic and resilient. PCDT is suited to the heavier consumer uses, such as draperies and furniture coverings.modifying 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,alsi50. In this process, ethylene is the polymer, the chemical building block of polyester,drossing flux.

The Manufacturing
Process

Polyester is manufactured by one of several methods.altib. The four basic forms are filament,master alloy, tow, and fiberfill. In the filament form,Grain Refiner Aluminum titanium boron, producing smooth-STRONTIUM ALUMINUM ALLOY Sr90Al10.Zinc Alloy Refining And Drossing Flux, filaments are cut to short,Furance Cleaning Flux.Sodium Remover Flux. 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 Rare Earth Waffle.

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 Rare Earth,Aluminum Bismuth Waffle, is extruded through a slot to form long ribbons.

Drying

• 3 After the polyester emerges from polymerization,Aluminum Bismuth. 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 Chromium Waffle, which are usually round,Aluminum Chromium. The number of holes in the spinneret determines the size of the yarn,Aluminum Zirconium Cut Cast Bar.
• 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,Aluminum Boron Cut Cast Bar. 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 Titanium Boron.
• Aluminum Base Master Alloy,vacuum laminating machine for solid wood furniture. Also,Vacuum Press Laminating Machine For Doors,Vacuum Press Laminate Machine For Doors.

Winding

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

Door Vacuum Press Laminate machine

Door Vacuum Press Laminator, 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,Round Knife Slitting Machine. The rope-High Gloss Pvc vacuum laminating machine.

Drawing tow

• 1 Newly-vacuum laminating machine.Laminate Film Cutting And Slitting Machine.

Crimping

• 2 Drawn tow is then fed into compression boxes,Wrapping Film Cutting And Slitting Machine, at a rate of 9-15 crimps per inch (3-6 per cm).Multifunction Slitting Machine.

Setting

• 3 After the tow is crimped, it is heated at 212-302°F (100-150°C)Round Knife Film Cutting And Slitting Machine.Film Cutting And Slitting Machine.

Cutting

• 4 Following heat setting,Curved Part Floor Brush Sanding Polishing 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)Manual Curved Mini Brush Sanding Machine For Wood.Board And Door Profile Sanding Polishing Machine, such ascarpet,polyester filaments are cut into 6 inch (15 cm)Profile Sanding Polishing Machine.

The Future

Profile Wrapping Machine For MDF,Door And Window Frame Profile Wrapping Machine's fastest-growing fiber.Aluminium WPC UPVC PVC Profile Wrapping 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,Profile Wrapping Laminate Machine, was introduced to the public in 1991. More luxurious and versatile than traditional polyester,Woodworking Furniture Door Vacuum Press Machine. Clothing designers such as Mary McFadden have created a line of clothes using this new form of polyester.Door Vacuum Press Laminating Machine, a superfiber material used to make bulletproof vests. This type of polyester may eventually be used as composite materials for cars and airplanes.