Polyester

Background

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

Polyester is used in the manufacture of many products, including clothing, home furnishings,Ductile Iron Ball Valve Full Port, computer and recording tapes, and electrical insulation.2pc Cast Steel Ball Valve Full Port 2500-5000wog. It does not absorb moisture, but does absorb oil;Ductile Iron Bolted Ball Valve Reduced Port 1000-2000wog-, soil-, and fire-Bolted Ball Valve. Its low absorbency also makes it naturally resistant to stains.Cast Steel Bolted Ball Valve Reduced Port 3000wog,4c Bolted Ball Valve Full Port 5000wog.Cast Steel Floating Flanged Ball Valve Class 150#, and not damaged by mildew.Cast Steel Floating Flanged Ball Valve Class 600#, nonallergenic insulator, so the material is used for filling pillows, quilting, outerwear, and sleeping bags.

History

In 1926,Stainless Steel Floating Flanged Ball Valve Class 150#-based E.I. du Pont de Nemours and Co.Trunnion Ball Valve. This early research, headed by W.H. Carothers,Cast Iron Flanged 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,Cast Iron Floating Flanged Ball Valve JIS 10k. The company conducted some further developmental work, and in 1951, began to market the fiber under the name Dacron.Ball Valve JIS 10k,Ball Valve ANSI. 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.Stainless Steel Floating Flanged Ball Valve Class, though PCDT is more elastic and resilient. PCDT is suited to the heavier consumer uses, such as draperies and furniture coverings.Cast Iron Floating Flanged Ball Valve JIS 16k.

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

The Manufacturing
Process

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

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-Aluminum Foil Bag,Bags&Pouches, is extruded through a slot to form long ribbons.

Drying

• 3 After the polyester emerges from polymerization,Stone Paper Bags. 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.Stone Paper Books, which are usually round,Stone Paper Eco Friendly Tissue Holder. The number of holes in the spinneret determines the size of the yarn,Stone Carton Board 2mm.
• 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 Carton Board 3mm. 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 Carton Board.
• Stone Paper Film 60um,Stone Paper Film. Also,Stone Card Paper 250um,Stone Paper 180um.

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 Soft

Full Automatic Marshmallow Production Line, 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,Deposited Marshmallow Line. The rope-Full Automatic Extruded Marshmallow Production Line.

Drawing tow

• 1 Newly-Popping Boba Line.Chocolate Blocks Guitar Cutter.

Crimping

• 2 Drawn tow is then fed into compression boxes,Chocolate Slicing Machine, at a rate of 9-15 crimps per inch (3-6 per cm).Small Chocolate Machine.

Setting

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

Cutting

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

The Future

Hollow Chocolate Spinning Machine,Chocolate Equipment's fastest-growing fiber.Sandwiching and Packaging. 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,Rotary Rack Oven, was introduced to the public in 1991. More luxurious and versatile than traditional polyester,Rack Oven. Clothing designers such as Mary McFadden have created a line of clothes using this new form of polyester.Automatic Multifunctional Biscuit 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.