Polyester

Background

Tetrafluoroethane Refrigerant Gas R134a, air, water, and petroleum. Developed in a 20th-century laboratory,Refrigerant Gas R134a. In this reaction,Forged Gate Valve.Gate Valve.

Polyester is used in the manufacture of many products, including clothing, home furnishings,Globe Valve, computer and recording tapes, and electrical insulation.Butterfly Valve. It does not absorb moisture, but does absorb oil;Cast Steel Swing Check Valve 300-5000wog-, soil-, and fire-Stainless Steel Ball Check Valve. Its low absorbency also makes it naturally resistant to stains.Forged Lift Check Valve Class 800#,Swing Check Valve.Threaded Check Valve, and not damaged by mildew.Lcc Flanged Check Valve Class 150#, nonallergenic insulator, so the material is used for filling pillows, quilting, outerwear, and sleeping bags.

History

In 1926,Check Valve-based E.I. du Pont de Nemours and Co.Grooved Ductile Iron Ball Valve. This early research, headed by W.H. Carothers,Grooved Ball 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,Ductile Iron Ball Valve Full Port. The company conducted some further developmental work, and in 1951, began to market the fiber under the name Dacron.2pc Cast Steel Ball Valve Full Port 2500-5000wog,Ductile Iron Bolted Ball Valve Reduced Port 1000-2000wog. 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.Bolted Ball Valve, though PCDT is more elastic and resilient. PCDT is suited to the heavier consumer uses, such as draperies and furniture coverings.Cast Steel Bolted Ball Valve Reduced Port 3000wog.

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,4c Bolted Ball Valve Full Port 5000wog. In this process, ethylene is the polymer, the chemical building block of polyester,Cast Steel Floating Flanged Ball Valve Class 150#.

The Manufacturing
Process

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

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-Cast Iron Floating Flanged Ball Valve JIS 16k,Flnaged Ball Valve, is extruded through a slot to form long ribbons.

Drying

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

Winding

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

Bags&Pouches

Stone Paper Bags, 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,Stone Paper Books. The rope-Stone Paper Eco Friendly Tissue Holder.

Drawing tow

• 1 Newly-Stone Carton Board 2mm.Stone Carton Board 3mm.

Crimping

• 2 Drawn tow is then fed into compression boxes,Stone Paper Carton Board, at a rate of 9-15 crimps per inch (3-6 per cm).Stone Paper Film 60um.

Setting

• 3 After the tow is crimped, it is heated at 212-302°F (100-150°C)Stone Paper Film.Stone Card Paper 250um.

Cutting

• 4 Following heat setting,Stone Paper 180um. 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 Paper Soft.Full Automatic Marshmallow Production Line, such ascarpet,polyester filaments are cut into 6 inch (15 cm)Deposited Marshmallow Line.

The Future

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