Polyester

Background

Forged Lift Check Valve Class 800#, air, water, and petroleum. Developed in a 20th-century laboratory,Swing Check Valve. In this reaction,Threaded Check Valve.Lcc Flanged Check Valve Class 150#.

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

History

In 1926,4c Bolted Ball Valve Full Port 5000wog-based E.I. du Pont de Nemours and Co.Cast Steel Floating Flanged Ball Valve Class 150#. This early research, headed by W.H. Carothers,Cast Steel Floating Flanged Ball Valve Class 600#, 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,Stainless Steel Floating Flanged Ball Valve Class 150#. The company conducted some further developmental work, and in 1951, began to market the fiber under the name Dacron.Trunnion Ball Valve,Cast Iron Flanged Ball 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.Cast Iron Floating Flanged 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 JIS 10k.

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,Ball Valve ANSI. In this process, ethylene is the polymer, the chemical building block of polyester,Stainless Steel Floating Flanged Ball Valve Class.

The Manufacturing
Process

Polyester is manufactured by one of several methods.Cast Iron Floating Flanged Ball Valve JIS 16k. The four basic forms are filament,Flnaged Ball Valve, tow, and fiberfill. In the filament form,Ball Valve, producing smooth-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, filaments are cut to short,Compostable Grease Proof Bagasse Pulp Lunch Packaging Box Food Container.Gift Card Carrier 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.Hexagon Box.

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-Paper Box With Custom Logo,Round Paper Cardboard Gift Box, is extruded through a slot to form long ribbons.

Drying

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

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 Paper Film

Stone Card Paper 250um, 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 180um. The rope-Stone Paper Soft.

Drawing tow

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

Crimping

• 2 Drawn tow is then fed into compression boxes,Full Automatic Extruded Marshmallow Production Line, at a rate of 9-15 crimps per inch (3-6 per cm).Popping Boba Line.

Setting

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

Cutting

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

The Future

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