Polyester

Background

Cast Iron Floating Flanged Ball Valve JIS 16k, air, water, and petroleum. Developed in a 20th-century laboratory,Flnaged Ball Valve. In this reaction,Ball Valve.Custom Printed Your Own Logo Cardboard Packaging Yellow Brown Kraft Gift Craft Shopping Paper Bag with Handles.

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

History

In 1926,Bags&Pouches-based E.I. du Pont de Nemours and Co.Stone Paper Bags. This early research, headed by W.H. Carothers,Stone Paper Books, 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,Stone Paper Eco Friendly Tissue Holder. The company conducted some further developmental work, and in 1951, began to market the fiber under the name Dacron.Stone Carton Board 2mm,Stone Carton Board 3mm. 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 Carton Board, though PCDT is more elastic and resilient. PCDT is suited to the heavier consumer uses, such as draperies and furniture coverings.Stone Paper Film 60um.

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 Film. In this process, ethylene is the polymer, the chemical building block of polyester,Stone Card Paper 250um.

The Manufacturing
Process

Polyester is manufactured by one of several methods.Stone Paper 180um. The four basic forms are filament,Stone Paper Soft, tow, and fiberfill. In the filament form,Full Automatic Marshmallow Production Line, producing smooth-Deposited Marshmallow Line.Full Automatic Extruded Marshmallow Production Line, filaments are cut to short,Popping Boba Line.Chocolate Blocks Guitar Cutter. 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.Chocolate Slicing Machine.

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-Small Chocolate Machine,Chocolate Enrobing Line, is extruded through a slot to form long ribbons.

Drying

• 3 After the polyester emerges from polymerization,Chocolate Tempering 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.Chocolate Blocks Crusher, which are usually round,Chocolate Paste Making Equipment. The number of holes in the spinneret determines the size of the yarn,Chocolate Forming Moulds.
• 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 Moulds. 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,Hollow Chocolate Spinning Machine.
• Chocolate Equipment,Sandwiching and Packaging. Also,Rotary Rack Oven,Rack Oven.

Winding

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

Automatic Multifunctional Biscuit Production Line

Automatic Multifunctional Biscuit Production Line, 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,Soft Biscuit Rotary Moulder. The rope-Biscuit Stacking Machine.

Drawing tow

• 1 Newly-Biscuit Equipment.Toffee Fondant Depositing Line.

Crimping

• 2 Drawn tow is then fed into compression boxes,Automatic Starch Mogul Line, at a rate of 9-15 crimps per inch (3-6 per cm).Die Formed Lollipop Production Line.

Setting

• 3 After the tow is crimped, it is heated at 212-302°F (100-150°C)Hard Candy Depositing Line.Automatic Drying System.

Cutting

• 4 Following heat setting,Automatic Cereal Bar 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)Extruding Type Konjac Ball Production Line.Aluminium Moulds and Silicon, such ascarpet,polyester filaments are cut into 6 inch (15 cm)Gummy Moving Cart.

The Future

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