Polyester

Background

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

Polyester is used in the manufacture of many products, including clothing, home furnishings,Grooved Ball Valve, computer and recording tapes, and electrical insulation.Ductile Iron Ball Valve Full Port. It does not absorb moisture, but does absorb oil;2pc Cast Steel Ball Valve Full Port 2500-5000wog-, soil-, and fire-Ductile Iron Bolted Ball Valve Reduced Port 1000-2000wog. Its low absorbency also makes it naturally resistant to stains.Bolted Ball Valve,Cast Steel Bolted Ball Valve Reduced Port 3000wog.4c Bolted Ball Valve Full Port 5000wog, and not damaged by mildew.Cast Steel Floating Flanged Ball Valve Class 150#, 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 600#-based E.I. du Pont de Nemours and Co.Stainless Steel Floating Flanged Ball Valve Class 150#. This early research, headed by W.H. Carothers,Trunnion 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 Flanged Ball Valve. The company conducted some further developmental work, and in 1951, began to market the fiber under the name Dacron.Cast Iron Floating Flanged Ball Valve JIS 10k,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 ANSI, though PCDT is more elastic and resilient. PCDT is suited to the heavier consumer uses, such as draperies and furniture coverings.Stainless Steel Floating Flanged Ball Valve Class.

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

The Manufacturing
Process

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

Drying

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

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 180um

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

Drawing tow

• 1 Newly-Full Automatic Extruded Marshmallow Production Line.Popping Boba Line.

Crimping

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

Setting

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

Cutting

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

The Future

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