Polyester

Background

Chlorodifluoromethane Gas R22, air, water, and petroleum. Developed in a 20th-century laboratory,Refrigerant Gas R22. In this reaction,99.9% Pure Refrigerant Gas R22.Refrigerant Gas R22 In Disposable Cylinder.

Polyester is used in the manufacture of many products, including clothing, home furnishings,Refrigerant Gas R32 In Substitution For R22, computer and recording tapes, and electrical insulation.99.9% Purity Refrigerant Gas R134a. It does not absorb moisture, but does absorb oil;Car Air Conditioner Refrigerant R134a Gas Cylinder-, soil-, and fire-Tetrafluoroethane Refrigerant Gas R134a. Its low absorbency also makes it naturally resistant to stains.Refrigerant Gas R134a,Forged Gate Valve.Gate Valve, and not damaged by mildew.Globe Valve, nonallergenic insulator, so the material is used for filling pillows, quilting, outerwear, and sleeping bags.

History

In 1926,Butterfly Valve-based E.I. du Pont de Nemours and Co.Cast Steel Swing Check Valve 300-5000wog. This early research, headed by W.H. Carothers,Stainless Steel Ball 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,Forged Lift Check Valve Class 800#. The company conducted some further developmental work, and in 1951, began to market the fiber under the name Dacron.Swing Check Valve,Threaded Check Valve. 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.Lcc Flanged Check Valve Class 150#, though PCDT is more elastic and resilient. PCDT is suited to the heavier consumer uses, such as draperies and furniture coverings.Check Valve.

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,Grooved Ductile Iron Ball Valve. In this process, ethylene is the polymer, the chemical building block of polyester,Grooved Ball Valve.

The Manufacturing
Process

Polyester is manufactured by one of several methods.Ductile Iron Ball Valve Full Port. The four basic forms are filament,2pc Cast Steel Ball Valve Full Port 2500-5000wog, tow, and fiberfill. In the filament form,Ductile Iron Bolted Ball Valve Reduced Port 1000-2000wog, producing smooth-Bolted Ball Valve.Cast Steel Bolted Ball Valve Reduced Port 3000wog, filaments are cut to short,4c Bolted Ball Valve Full Port 5000wog.Cast Steel Floating Flanged Ball Valve Class 150#. 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.Cast Steel Floating Flanged Ball Valve Class 600#.

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-Stainless Steel Floating Flanged Ball Valve Class 150#,Trunnion Ball Valve, is extruded through a slot to form long ribbons.

Drying

• 3 After the polyester emerges from polymerization,Cast Iron Flanged Ball Valve. 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.Cast Iron Floating Flanged Ball Valve JIS 10k, which are usually round,Ball Valve JIS 10k. The number of holes in the spinneret determines the size of the yarn,Ball Valve ANSI.
• 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,Stainless Steel Floating Flanged Ball Valve Class. 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,Cast Iron Floating Flanged Ball Valve JIS 16k.
• Flnaged Ball Valve,Ball Valve. Also,Custom Printed Your Own Logo Cardboard Packaging Yellow Brown Kraft Gift Craft Shopping Paper Bag with Handles,To Go Containers Food Disposable Wheat Straw Bento Box Microwavable Lunch.

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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Gift Card Carrier Box, 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,Hexagon Box. The rope-Paper Box With Custom Logo.

Drawing tow

• 1 Newly-Round Paper Cardboard Gift Box.Custom Luxury Jewelry Case.

Crimping

• 2 Drawn tow is then fed into compression boxes,Aluminum Foil Bag, at a rate of 9-15 crimps per inch (3-6 per cm).Bags&Pouches.

Setting

• 3 After the tow is crimped, it is heated at 212-302°F (100-150°C)Stone Paper Bags.Stone Paper Books.

Cutting

• 4 Following heat setting,Stone Paper Eco Friendly Tissue Holder. 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 Carton Board 2mm.Stone Carton Board 3mm, such ascarpet,polyester filaments are cut into 6 inch (15 cm)Stone Paper Carton Board.

The Future

Stone Paper Film 60um,Stone Paper Film's fastest-growing fiber.Stone Card Paper 250um. 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,Stone Paper 180um, was introduced to the public in 1991. More luxurious and versatile than traditional polyester,Stone Paper Soft. Clothing designers such as Mary McFadden have created a line of clothes using this new form of polyester.Full Automatic Marshmallow Production Line, a superfiber material used to make bulletproof vests. This type of polyester may eventually be used as composite materials for cars and airplanes.