Polyester

Background

99.9% Purity Refrigerant Gas R134a, air, water, and petroleum. Developed in a 20th-century laboratory,Car Air Conditioner Refrigerant R134a Gas Cylinder. In this reaction,Tetrafluoroethane Refrigerant Gas R134a.Refrigerant Gas R134a.

Polyester is used in the manufacture of many products, including clothing, home furnishings,Forged Gate Valve, computer and recording tapes, and electrical insulation.Gate Valve. It does not absorb moisture, but does absorb oil;Globe Valve-, soil-, and fire-Butterfly Valve. Its low absorbency also makes it naturally resistant to stains.Cast Steel Swing Check Valve 300-5000wog,Stainless Steel Ball Check Valve.Forged Lift Check Valve Class 800#, and not damaged by mildew.Swing Check Valve, nonallergenic insulator, so the material is used for filling pillows, quilting, outerwear, and sleeping bags.

History

In 1926,Threaded Check Valve-based E.I. du Pont de Nemours and Co.Lcc Flanged Check Valve Class 150#. This early research, headed by W.H. Carothers,Check Valve, 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,Grooved Ductile Iron Ball Valve. The company conducted some further developmental work, and in 1951, began to market the fiber under the name Dacron.Grooved Ball Valve,Ductile Iron Ball Valve Full Port. 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.2pc Cast Steel Ball Valve Full Port 2500-5000wog, though PCDT is more elastic and resilient. PCDT is suited to the heavier consumer uses, such as draperies and furniture coverings.Ductile Iron Bolted Ball Valve Reduced Port 1000-2000wog.

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,Bolted Ball Valve. In this process, ethylene is the polymer, the chemical building block of polyester,Cast Steel Bolted Ball Valve Reduced Port 3000wog.

The Manufacturing
Process

Polyester is manufactured by one of several methods.4c Bolted Ball Valve Full Port 5000wog. The four basic forms are filament,Cast Steel Floating Flanged Ball Valve Class 150#, tow, and fiberfill. In the filament form,Cast Steel Floating Flanged Ball Valve Class 600#, producing smooth-Stainless Steel Floating Flanged Ball Valve Class 150#.Trunnion Ball Valve, filaments are cut to short,Cast Iron Flanged Ball Valve.Cast Iron Floating Flanged Ball Valve JIS 10k. 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.Ball Valve JIS 10k.

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-Ball Valve ANSI,Stainless Steel Floating Flanged Ball Valve Class, is extruded through a slot to form long ribbons.

Drying

• 3 After the polyester emerges from polymerization,Cast Iron Floating Flanged Ball Valve JIS 16k. 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.Flnaged Ball Valve, which are usually round,Ball Valve. The number of holes in the spinneret determines the size of the yarn,Custom Printed Your Own Logo Cardboard Packaging Yellow Brown Kraft Gift Craft Shopping Paper Bag with Handles.
• 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,To Go Containers Food Disposable Wheat Straw Bento Box Microwavable Lunch. 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,Compostable Grease Proof Bagasse Pulp Lunch Packaging Box Food Container.
• Gift Card Carrier Box,Hexagon Box. Also,Paper Box With Custom Logo,Round Paper Cardboard Gift Box.

Winding

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

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Aluminum Foil Bag, 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,Bags&Pouches. The rope-Stone Paper Bags.

Drawing tow

• 1 Newly-Stone Paper Books.Stone Paper Eco Friendly Tissue Holder.

Crimping

• 2 Drawn tow is then fed into compression boxes,Stone Carton Board 2mm, at a rate of 9-15 crimps per inch (3-6 per cm).Stone Carton Board 3mm.

Setting

• 3 After the tow is crimped, it is heated at 212-302°F (100-150°C)Stone Paper Carton Board.Stone Paper Film 60um.

Cutting

• 4 Following heat setting,Stone Paper Film. 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)Stone Card Paper 250um.Stone Paper 180um, such ascarpet,polyester filaments are cut into 6 inch (15 cm)Stone Paper Soft.

The Future

Full Automatic Marshmallow Production Line,Deposited Marshmallow Line's fastest-growing fiber.Full Automatic Extruded Marshmallow Production Line. 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,Popping Boba Line, was introduced to the public in 1991. More luxurious and versatile than traditional polyester,Chocolate Blocks Guitar Cutter. Clothing designers such as Mary McFadden have created a line of clothes using this new form of polyester.Chocolate Slicing Machine, a superfiber material used to make bulletproof vests. This type of polyester may eventually be used as composite materials for cars and airplanes.