Polyester

Background

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Polyester is used in the manufacture of many products, including clothing, home furnishings,Stainless Steel Floating Flanged Ball Valve Class 150#, computer and recording tapes, and electrical insulation.Trunnion Ball Valve. It does not absorb moisture, but does absorb oil;Cast Iron Flanged Ball Valve-, soil-, and fire-Cast Iron Floating Flanged Ball Valve JIS 10k. Its low absorbency also makes it naturally resistant to stains.Ball Valve JIS 10k,Ball Valve ANSI.Stainless Steel Floating Flanged Ball Valve Class, and not damaged by mildew.Cast Iron Floating Flanged Ball Valve JIS 16k, nonallergenic insulator, so the material is used for filling pillows, quilting, outerwear, and sleeping bags.

History

In 1926,Flnaged Ball Valve-based E.I. du Pont de Nemours and Co.Ball Valve. This early research, headed by W.H. Carothers,Custom Printed Your Own Logo Cardboard Packaging Yellow Brown Kraft Gift Craft Shopping Paper Bag with Handles, 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,To Go Containers Food Disposable Wheat Straw Bento Box Microwavable Lunch. The company conducted some further developmental work, and in 1951, began to market the fiber under the name Dacron.Compostable Grease Proof Bagasse Pulp Lunch Packaging Box Food Container,Gift Card Carrier Box. 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.Hexagon Box, though PCDT is more elastic and resilient. PCDT is suited to the heavier consumer uses, such as draperies and furniture coverings.Paper Box With Custom Logo.

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,Round Paper Cardboard Gift Box. In this process, ethylene is the polymer, the chemical building block of polyester,Custom Luxury Jewelry Case.

The Manufacturing
Process

Polyester is manufactured by one of several methods.Aluminum Foil Bag. The four basic forms are filament,Bags&Pouches, tow, and fiberfill. In the filament form,Stone Paper Bags, producing smooth-Stone Paper Books.Stone Paper Eco Friendly Tissue Holder, filaments are cut to short,Stone Carton Board 2mm.Stone Carton Board 3mm. 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.Stone Paper Carton Board.

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-Stone Paper Film 60um,Stone Paper Film, is extruded through a slot to form long ribbons.

Drying

• 3 After the polyester emerges from polymerization,Stone Card Paper 250um. 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 180um, which are usually round,Stone Paper Soft. The number of holes in the spinneret determines the size of the yarn,Full Automatic Marshmallow Production Line.
• 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,Deposited Marshmallow Line. 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,Full Automatic Extruded Marshmallow Production Line.
• Popping Boba Line,Chocolate Blocks Guitar Cutter. Also,Chocolate Slicing Machine,Small Chocolate Machine.

Winding

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

Chocolate Enrobing Line

Chocolate Tempering Machine, 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,Chocolate Blocks Crusher. The rope-Chocolate Paste Making Equipment.

Drawing tow

• 1 Newly-Chocolate Forming Moulds.Chocolate Moulds.

Crimping

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

Setting

• 3 After the tow is crimped, it is heated at 212-302°F (100-150°C)Sandwiching and Packaging.Rotary Rack Oven.

Cutting

• 4 Following heat setting,Rack Oven. 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)Automatic Multifunctional Biscuit Production Line.Automatic Multifunctional Biscuit Production Line, such ascarpet,polyester filaments are cut into 6 inch (15 cm)Soft Biscuit Rotary Moulder.

The Future

Biscuit Stacking Machine,Biscuit Equipment's fastest-growing fiber.Toffee Fondant Depositing Line. 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,Automatic Starch Mogul Line, was introduced to the public in 1991. More luxurious and versatile than traditional polyester,Die Formed Lollipop Production Line. Clothing designers such as Mary McFadden have created a line of clothes using this new form of polyester.Hard Candy Depositing Line, a superfiber material used to make bulletproof vests. This type of polyester may eventually be used as composite materials for cars and airplanes.