Polyester

Background

Grooved Ductile Iron Ball Valve, air, water, and petroleum. Developed in a 20th-century laboratory,Grooved Ball Valve. In this reaction,Ductile Iron Ball Valve Full Port.2pc Cast Steel Ball Valve Full Port 2500-5000wog.

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

History

In 1926,Cast Iron Flanged Ball Valve-based E.I. du Pont de Nemours and Co.Cast Iron Floating Flanged Ball Valve JIS 10k. This early research, headed by W.H. Carothers,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 ANSI. The company conducted some further developmental work, and in 1951, began to market the fiber under the name Dacron.Stainless Steel Floating Flanged Ball Valve Class,Cast Iron Floating Flanged Ball Valve JIS 16k. 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.Flnaged Ball Valve, though PCDT is more elastic and resilient. PCDT is suited to the heavier consumer uses, such as draperies and furniture coverings.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,Custom Printed Your Own Logo Cardboard Packaging Yellow Brown Kraft Gift Craft Shopping Paper Bag with Handles. In this process, ethylene is the polymer, the chemical building block of polyester,To Go Containers Food Disposable Wheat Straw Bento Box Microwavable Lunch.

The Manufacturing
Process

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

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 Paper Bags,Stone Paper Books, is extruded through a slot to form long ribbons.

Drying

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

Winding

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

Deposited Marshmallow Line

Full Automatic Extruded Marshmallow 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,Popping Boba Line. The rope-Chocolate Blocks Guitar Cutter.

Drawing tow

• 1 Newly-Chocolate Slicing Machine.Small Chocolate Machine.

Crimping

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

Setting

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

Cutting

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

The Future

Sandwiching and Packaging,Rotary Rack Oven's fastest-growing fiber.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,Automatic Multifunctional Biscuit Production Line, 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.Soft Biscuit Rotary Moulder, a superfiber material used to make bulletproof vests. This type of polyester may eventually be used as composite materials for cars and airplanes.