Polyester

Background

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Polyester is used in the manufacture of many products, including clothing, home furnishings,4c Bolted Ball Valve Full Port 5000wog, computer and recording tapes, and electrical insulation.Cast Steel Floating Flanged Ball Valve Class 150#. It does not absorb moisture, but does absorb oil;Cast Steel Floating Flanged Ball Valve Class 600#-, soil-, and fire-Stainless Steel Floating Flanged Ball Valve Class 150#. Its low absorbency also makes it naturally resistant to stains.Trunnion Ball Valve,Cast Iron Flanged Ball Valve.Cast Iron Floating Flanged Ball Valve JIS 10k, and not damaged by mildew.Ball Valve JIS 10k, nonallergenic insulator, so the material is used for filling pillows, quilting, outerwear, and sleeping bags.

History

In 1926,Ball Valve ANSI-based E.I. du Pont de Nemours and Co.Stainless Steel Floating Flanged Ball Valve Class. This early research, headed by W.H. Carothers,Cast Iron Floating Flanged Ball Valve JIS 16k, 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,Flnaged Ball Valve. The company conducted some further developmental work, and in 1951, began to market the fiber under the name Dacron.Ball Valve,Custom Printed Your Own Logo Cardboard Packaging Yellow Brown Kraft Gift Craft Shopping Paper Bag with Handles. 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.To Go Containers Food Disposable Wheat Straw Bento Box Microwavable Lunch, though PCDT is more elastic and resilient. PCDT is suited to the heavier consumer uses, such as draperies and furniture coverings.Compostable Grease Proof Bagasse Pulp Lunch Packaging Box Food Container.

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,Gift Card Carrier Box. In this process, ethylene is the polymer, the chemical building block of polyester,Hexagon Box.

The Manufacturing
Process

Polyester is manufactured by one of several methods.Paper Box With Custom Logo. The four basic forms are filament,Round Paper Cardboard Gift Box, tow, and fiberfill. In the filament form,Custom Luxury Jewelry Case, producing smooth-Aluminum Foil Bag.Bags&Pouches, filaments are cut to short,Stone Paper Bags.Stone Paper Books. 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 Eco Friendly Tissue Holder.

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 Carton Board 2mm,Stone Carton Board 3mm, is extruded through a slot to form long ribbons.

Drying

• 3 After the polyester emerges from polymerization,Stone Paper Carton Board. 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 Film 60um, which are usually round,Stone Paper Film. The number of holes in the spinneret determines the size of the yarn,Stone Card Paper 250um.
• 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 180um. 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 Soft.
• Full Automatic Marshmallow Production Line,Deposited Marshmallow Line. Also,Full Automatic Extruded Marshmallow Production Line,Popping Boba Line.

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 Blocks Guitar Cutter

Chocolate Slicing 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,Small Chocolate Machine. The rope-Chocolate Enrobing Line.

Drawing tow

• 1 Newly-Chocolate Tempering Machine.Chocolate Blocks Crusher.

Crimping

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

Setting

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

Cutting

• 4 Following heat setting,Chocolate Equipment. 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)Sandwiching and Packaging.Rotary Rack Oven, such ascarpet,polyester filaments are cut into 6 inch (15 cm)Rack Oven.

The Future

Automatic Multifunctional Biscuit Production Line,Automatic Multifunctional Biscuit Production Line's fastest-growing fiber.Soft Biscuit Rotary Moulder. 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,Biscuit Stacking Machine, was introduced to the public in 1991. More luxurious and versatile than traditional polyester,Biscuit Equipment. Clothing designers such as Mary McFadden have created a line of clothes using this new form of polyester.Toffee Fondant 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.