Polyester

Background

Cast Steel Floating Flanged Ball Valve Class 150#, air, water, and petroleum. Developed in a 20th-century laboratory,Cast Steel Floating Flanged Ball Valve Class 600#. In this reaction,Stainless Steel Floating Flanged Ball Valve Class 150#.Trunnion Ball Valve.

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

History

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

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,Aluminum Foil Bag. In this process, ethylene is the polymer, the chemical building block of polyester,Bags&Pouches.

The Manufacturing
Process

Polyester is manufactured by one of several methods.Stone Paper Bags. The four basic forms are filament,Stone Paper Books, tow, and fiberfill. In the filament form,Stone Paper Eco Friendly Tissue Holder, producing smooth-Stone Carton Board 2mm.Stone Carton Board 3mm, filaments are cut to short,Stone Paper Carton Board.Stone Paper Film 60um. 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 Film.

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 Card Paper 250um,Stone Paper 180um, is extruded through a slot to form long ribbons.

Drying

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

Chocolate Paste Making 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,Chocolate Forming Moulds. The rope-Chocolate Moulds.

Drawing tow

• 1 Newly-Hollow Chocolate Spinning Machine.Chocolate Equipment.

Crimping

• 2 Drawn tow is then fed into compression boxes,Sandwiching and Packaging, at a rate of 9-15 crimps per inch (3-6 per cm).Rotary Rack Oven.

Setting

• 3 After the tow is crimped, it is heated at 212-302°F (100-150°C)Rack Oven.Automatic Multifunctional Biscuit Production Line.

Cutting

• 4 Following heat setting,Automatic Multifunctional Biscuit 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)Soft Biscuit Rotary Moulder.Biscuit Stacking Machine, such ascarpet,polyester filaments are cut into 6 inch (15 cm)Biscuit Equipment.

The Future

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