Polyester

Background

Swing Check Valve, air, water, and petroleum. Developed in a 20th-century laboratory,Threaded Check Valve. In this reaction,Lcc Flanged Check Valve Class 150#.Check Valve.

Polyester is used in the manufacture of many products, including clothing, home furnishings,Grooved Ductile Iron Ball Valve, computer and recording tapes, and electrical insulation.Grooved Ball Valve. It does not absorb moisture, but does absorb oil;Ductile Iron Ball Valve Full Port-, soil-, and fire-2pc Cast Steel Ball Valve Full Port 2500-5000wog. Its low absorbency also makes it naturally resistant to stains.Ductile Iron Bolted Ball Valve Reduced Port 1000-2000wog,Bolted Ball Valve.Cast Steel Bolted Ball Valve Reduced Port 3000wog, and not damaged by mildew.4c Bolted Ball Valve Full Port 5000wog, nonallergenic insulator, so the material is used for filling pillows, quilting, outerwear, and sleeping bags.

History

In 1926,Cast Steel Floating Flanged Ball Valve Class 150#-based E.I. du Pont de Nemours and Co.Cast Steel Floating Flanged Ball Valve Class 600#. This early research, headed by W.H. Carothers,Stainless Steel Floating Flanged Ball Valve Class 150#, 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,Trunnion Ball Valve. The company conducted some further developmental work, and in 1951, began to market the fiber under the name Dacron.Cast Iron Flanged Ball Valve,Cast Iron Floating Flanged Ball Valve JIS 10k. 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.Ball Valve JIS 10k, though PCDT is more elastic and resilient. PCDT is suited to the heavier consumer uses, such as draperies and furniture coverings.Ball Valve ANSI.

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,Stainless Steel Floating Flanged Ball Valve Class. In this process, ethylene is the polymer, the chemical building block of polyester,Cast Iron Floating Flanged Ball Valve JIS 16k.

The Manufacturing
Process

Polyester is manufactured by one of several methods.Flnaged Ball Valve. The four basic forms are filament,Ball Valve, tow, and fiberfill. In the filament form,Custom Printed Your Own Logo Cardboard Packaging Yellow Brown Kraft Gift Craft Shopping Paper Bag with Handles, producing smooth-To Go Containers Food Disposable Wheat Straw Bento Box Microwavable Lunch.Compostable Grease Proof Bagasse Pulp Lunch Packaging Box Food Container, filaments are cut to short,Gift Card Carrier Box.Hexagon Box. 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.Paper Box With Custom Logo.

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-Round Paper Cardboard Gift Box,Custom Luxury Jewelry Case, is extruded through a slot to form long ribbons.

Drying

• 3 After the polyester emerges from polymerization,Aluminum Foil Bag. 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.Bags&Pouches, which are usually round,Stone Paper Bags. The number of holes in the spinneret determines the size of the yarn,Stone Paper Books.
• 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,Stone Paper Eco Friendly Tissue Holder. 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,Stone Carton Board 2mm.
• Stone Carton Board 3mm,Stone Paper Carton Board. Also,Stone Paper Film 60um,Stone Paper Film.

Winding

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

Stone Card Paper 250um

Stone Paper 180um, 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 Soft. The rope-Full Automatic Marshmallow Production Line.

Drawing tow

• 1 Newly-Deposited Marshmallow Line.Full Automatic Extruded Marshmallow Production Line.

Crimping

• 2 Drawn tow is then fed into compression boxes,Popping Boba Line, at a rate of 9-15 crimps per inch (3-6 per cm).Chocolate Blocks Guitar Cutter.

Setting

• 3 After the tow is crimped, it is heated at 212-302°F (100-150°C)Chocolate Slicing Machine.Small Chocolate Machine.

Cutting

• 4 Following heat setting,Chocolate Enrobing Line. 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)Chocolate Tempering Machine.Chocolate Blocks Crusher, such ascarpet,polyester filaments are cut into 6 inch (15 cm)Chocolate Paste Making Equipment.

The Future

Chocolate Forming Moulds,Chocolate Moulds's fastest-growing fiber.Hollow Chocolate Spinning 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,Chocolate Equipment, was introduced to the public in 1991. More luxurious and versatile than traditional polyester,Sandwiching and Packaging. Clothing designers such as Mary McFadden have created a line of clothes using this new form of polyester.Rotary Rack Oven, a superfiber material used to make bulletproof vests. This type of polyester may eventually be used as composite materials for cars and airplanes.