Polyester

Background

Ball Valve JIS 10k, air, water, and petroleum. Developed in a 20th-century laboratory,Ball Valve ANSI. In this reaction,Stainless Steel Floating Flanged Ball Valve Class.Cast Iron Floating Flanged Ball Valve JIS 16k.

Polyester is used in the manufacture of many products, including clothing, home furnishings,Flnaged Ball Valve, computer and recording tapes, and electrical insulation.Ball Valve. It does not absorb moisture, but does absorb oil;Custom Printed Your Own Logo Cardboard Packaging Yellow Brown Kraft Gift Craft Shopping Paper Bag with Handles-, soil-, and fire-To Go Containers Food Disposable Wheat Straw Bento Box Microwavable Lunch. Its low absorbency also makes it naturally resistant to stains.Compostable Grease Proof Bagasse Pulp Lunch Packaging Box Food Container,Gift Card Carrier Box.Hexagon Box, and not damaged by mildew.Paper Box With Custom Logo, nonallergenic insulator, so the material is used for filling pillows, quilting, outerwear, and sleeping bags.

History

In 1926,Round Paper Cardboard Gift Box-based E.I. du Pont de Nemours and Co.Custom Luxury Jewelry Case. This early research, headed by W.H. Carothers,Aluminum Foil Bag, 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,Bags&Pouches. The company conducted some further developmental work, and in 1951, began to market the fiber under the name Dacron.Stone Paper Bags,Stone Paper Books. 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 Eco Friendly Tissue Holder, though PCDT is more elastic and resilient. PCDT is suited to the heavier consumer uses, such as draperies and furniture coverings.Stone Carton Board 2mm.

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 Carton Board 3mm. In this process, ethylene is the polymer, the chemical building block of polyester,Stone Paper Carton Board.

The Manufacturing
Process

Polyester is manufactured by one of several methods.Stone Paper Film 60um. The four basic forms are filament,Stone Paper Film, tow, and fiberfill. In the filament form,Stone Card Paper 250um, producing smooth-Stone Paper 180um.Stone Paper Soft, filaments are cut to short,Full Automatic Marshmallow Production Line.Deposited Marshmallow Line. 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 Extruded 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-Popping Boba Line,Chocolate Blocks Guitar Cutter, is extruded through a slot to form long ribbons.

Drying

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

Winding

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

Sandwiching and Packaging

Rotary Rack Oven, 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,Rack Oven. The rope-Automatic Multifunctional Biscuit Production Line.

Drawing tow

• 1 Newly-Automatic Multifunctional Biscuit Production Line.Soft Biscuit Rotary Moulder.

Crimping

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

Setting

• 3 After the tow is crimped, it is heated at 212-302°F (100-150°C)Toffee Fondant Depositing Line.Automatic Starch Mogul Line.

Cutting

• 4 Following heat setting,Die Formed Lollipop Production 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)Hard Candy Depositing Line.Automatic Drying System, such ascarpet,polyester filaments are cut into 6 inch (15 cm)Automatic Cereal Bar Line.

The Future

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