Polyester

Background

Cast Iron Flanged Ball Valve, air, water, and petroleum. Developed in a 20th-century laboratory,Cast Iron Floating Flanged Ball Valve JIS 10k. In this reaction,Ball Valve JIS 10k.Ball Valve ANSI.

Polyester is used in the manufacture of many products, including clothing, home furnishings,Stainless Steel Floating Flanged Ball Valve Class, computer and recording tapes, and electrical insulation.Cast Iron Floating Flanged Ball Valve JIS 16k. It does not absorb moisture, but does absorb oil;Flnaged Ball Valve-, soil-, and fire-Ball Valve. Its low absorbency also makes it naturally resistant to stains.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.Compostable Grease Proof Bagasse Pulp Lunch Packaging Box Food Container, and not damaged by mildew.Gift Card Carrier Box, nonallergenic insulator, so the material is used for filling pillows, quilting, outerwear, and sleeping bags.

History

In 1926,Hexagon Box-based E.I. du Pont de Nemours and Co.Paper Box With Custom Logo. This early research, headed by W.H. Carothers,Round Paper Cardboard Gift Box, 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,Custom Luxury Jewelry Case. The company conducted some further developmental work, and in 1951, began to market the fiber under the name Dacron.Aluminum Foil Bag,Bags&Pouches. 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.Stone Paper Bags, though PCDT is more elastic and resilient. PCDT is suited to the heavier consumer uses, such as draperies and furniture coverings.Stone Paper Books.

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,Stone Paper Eco Friendly Tissue Holder. In this process, ethylene is the polymer, the chemical building block of polyester,Stone Carton Board 2mm.

The Manufacturing
Process

Polyester is manufactured by one of several methods.Stone Carton Board 3mm. The four basic forms are filament,Stone Paper Carton Board, tow, and fiberfill. In the filament form,Stone Paper Film 60um, producing smooth-Stone Paper Film.Stone Card Paper 250um, filaments are cut to short,Stone Paper 180um.Stone Paper Soft. 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.Full Automatic Marshmallow Production Line.

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-Deposited Marshmallow Line,Full Automatic Extruded Marshmallow Production Line, is extruded through a slot to form long ribbons.

Drying

• 3 After the polyester emerges from polymerization,Popping Boba Line. 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.Chocolate Blocks Guitar Cutter, which are usually round,Chocolate Slicing Machine. The number of holes in the spinneret determines the size of the yarn,Small Chocolate Machine.
• 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,Chocolate Enrobing 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,Chocolate Tempering Machine.
• Chocolate Blocks Crusher,Chocolate Paste Making Equipment. Also,Chocolate Forming Moulds,Chocolate Moulds.

Winding

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

Hollow Chocolate Spinning Machine

Chocolate Equipment, 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,Sandwiching and Packaging. The rope-Rotary Rack Oven.

Drawing tow

• 1 Newly-Rack Oven.Automatic Multifunctional Biscuit Production Line.

Crimping

• 2 Drawn tow is then fed into compression boxes,Automatic Multifunctional Biscuit Production Line, at a rate of 9-15 crimps per inch (3-6 per cm).Soft Biscuit Rotary Moulder.

Setting

• 3 After the tow is crimped, it is heated at 212-302°F (100-150°C)Biscuit Stacking Machine.Biscuit Equipment.

Cutting

• 4 Following heat setting,Toffee Fondant Depositing Line. 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 Starch Mogul Line.Die Formed Lollipop Production Line, such ascarpet,polyester filaments are cut into 6 inch (15 cm)Hard Candy Depositing Line.

The Future

Automatic Drying System,Automatic Cereal Bar Line's fastest-growing fiber.Extruding Type Konjac Ball Production 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,Aluminium Moulds and Silicon, was introduced to the public in 1991. More luxurious and versatile than traditional polyester,Gummy Moving Cart. Clothing designers such as Mary McFadden have created a line of clothes using this new form of polyester.Advance Rasing Film Vacuum Cooker, a superfiber material used to make bulletproof vests. This type of polyester may eventually be used as composite materials for cars and airplanes.