Polyester

Background

Check Valve, air, water, and petroleum. Developed in a 20th-century laboratory,Grooved Ductile Iron Ball Valve. In this reaction,Grooved Ball Valve.Ductile Iron Ball Valve Full Port.

Polyester is used in the manufacture of many products, including clothing, home furnishings,2pc Cast Steel Ball Valve Full Port 2500-5000wog, computer and recording tapes, and electrical insulation.Ductile Iron Bolted Ball Valve Reduced Port 1000-2000wog. It does not absorb moisture, but does absorb oil;Bolted Ball Valve-, soil-, and fire-Cast Steel Bolted Ball Valve Reduced Port 3000wog. Its low absorbency also makes it naturally resistant to stains.4c Bolted Ball Valve Full Port 5000wog,Cast Steel Floating Flanged Ball Valve Class 150#.Cast Steel Floating Flanged Ball Valve Class 600#, and not damaged by mildew.Stainless Steel Floating Flanged Ball Valve Class 150#, nonallergenic insulator, so the material is used for filling pillows, quilting, outerwear, and sleeping bags.

History

In 1926,Trunnion Ball Valve-based E.I. du Pont de Nemours and Co.Cast Iron Flanged Ball Valve. This early research, headed by W.H. Carothers,Cast Iron Floating Flanged Ball Valve JIS 10k, 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,Ball Valve JIS 10k. The company conducted some further developmental work, and in 1951, began to market the fiber under the name Dacron.Ball Valve ANSI,Stainless Steel Floating Flanged Ball Valve Class. 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.Cast Iron Floating Flanged Ball Valve JIS 16k, though PCDT is more elastic and resilient. PCDT is suited to the heavier consumer uses, such as draperies and furniture coverings.Flnaged Ball Valve.

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,Ball Valve. In this process, ethylene is the polymer, the chemical building block of polyester,Custom Printed Your Own Logo Cardboard Packaging Yellow Brown Kraft Gift Craft Shopping Paper Bag with Handles.

The Manufacturing
Process

Polyester is manufactured by one of several methods.To Go Containers Food Disposable Wheat Straw Bento Box Microwavable Lunch. The four basic forms are filament,Compostable Grease Proof Bagasse Pulp Lunch Packaging Box Food Container, tow, and fiberfill. In the filament form,Gift Card Carrier Box, producing smooth-Hexagon Box.Paper Box With Custom Logo, filaments are cut to short,Round Paper Cardboard Gift Box.Custom Luxury Jewelry Case. 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.Aluminum Foil Bag.

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-Bags&Pouches,Stone Paper Bags, is extruded through a slot to form long ribbons.

Drying

• 3 After the polyester emerges from polymerization,Stone Paper Books. 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 Eco Friendly Tissue Holder, which are usually round,Stone Carton Board 2mm. The number of holes in the spinneret determines the size of the yarn,Stone Carton Board 3mm.
• 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 Carton Board. 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 Film 60um.
• Stone Paper Film,Stone Card Paper 250um. Also,Stone Paper 180um,Stone Paper Soft.

Winding

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

Full Automatic Marshmallow Production Line

Deposited Marshmallow 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,Full Automatic Extruded Marshmallow Production Line. The rope-Popping Boba Line.

Drawing tow

• 1 Newly-Chocolate Blocks Guitar Cutter.Chocolate Slicing Machine.

Crimping

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

Setting

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

Cutting

• 4 Following heat setting,Chocolate Paste Making 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)Chocolate Forming Moulds.Chocolate Moulds, such ascarpet,polyester filaments are cut into 6 inch (15 cm)Hollow Chocolate Spinning Machine.

The Future

Chocolate Equipment,Sandwiching and Packaging's fastest-growing fiber.Rotary Rack Oven. 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,Rack Oven, was introduced to the public in 1991. More luxurious and versatile than traditional polyester,Automatic Multifunctional Biscuit Production Line. Clothing designers such as Mary McFadden have created a line of clothes using this new form of polyester.Automatic Multifunctional Biscuit Production Line, a superfiber material used to make bulletproof vests. This type of polyester may eventually be used as composite materials for cars and airplanes.