Polyester

Background

Globe Valve, air, water, and petroleum. Developed in a 20th-century laboratory,Butterfly Valve. In this reaction,Cast Steel Swing Check Valve 300-5000wog.Stainless Steel Ball Check Valve.

Polyester is used in the manufacture of many products, including clothing, home furnishings,Forged Lift Check Valve Class 800#, computer and recording tapes, and electrical insulation.Swing Check Valve. It does not absorb moisture, but does absorb oil;Threaded Check Valve-, soil-, and fire-Lcc Flanged Check Valve Class 150#. Its low absorbency also makes it naturally resistant to stains.Check Valve,Grooved Ductile Iron Ball Valve.Grooved Ball Valve, and not damaged by mildew.Ductile Iron Ball Valve Full Port, nonallergenic insulator, so the material is used for filling pillows, quilting, outerwear, and sleeping bags.

History

In 1926,2pc Cast Steel Ball Valve Full Port 2500-5000wog-based E.I. du Pont de Nemours and Co.Ductile Iron Bolted Ball Valve Reduced Port 1000-2000wog. This early research, headed by W.H. Carothers,Bolted Ball Valve, 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,Cast Steel Bolted Ball Valve Reduced Port 3000wog. The company conducted some further developmental work, and in 1951, began to market the fiber under the name Dacron.4c Bolted Ball Valve Full Port 5000wog,Cast Steel Floating Flanged Ball Valve Class 150#. 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 Steel Floating Flanged Ball Valve Class 600#, though PCDT is more elastic and resilient. PCDT is suited to the heavier consumer uses, such as draperies and furniture coverings.Stainless Steel Floating Flanged Ball Valve Class 150#.

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,Trunnion Ball Valve. In this process, ethylene is the polymer, the chemical building block of polyester,Cast Iron Flanged Ball Valve.

The Manufacturing
Process

Polyester is manufactured by one of several methods.Cast Iron Floating Flanged Ball Valve JIS 10k. The four basic forms are filament,Ball Valve JIS 10k, tow, and fiberfill. In the filament form,Ball Valve ANSI, producing smooth-Stainless Steel Floating Flanged Ball Valve Class.Cast Iron Floating Flanged Ball Valve JIS 16k, filaments are cut to short,Flnaged Ball Valve.Ball Valve. 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.Custom Printed Your Own Logo Cardboard Packaging Yellow Brown Kraft Gift Craft Shopping Paper Bag with Handles.

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-To Go Containers Food Disposable Wheat Straw Bento Box Microwavable Lunch,Compostable Grease Proof Bagasse Pulp Lunch Packaging Box Food Container, is extruded through a slot to form long ribbons.

Drying

• 3 After the polyester emerges from polymerization,Gift Card Carrier Box. 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.Hexagon Box, which are usually round,Paper Box With Custom Logo. The number of holes in the spinneret determines the size of the yarn,Round Paper Cardboard Gift Box.
• 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,Custom Luxury Jewelry Case. 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,Aluminum Foil Bag.
• Bags&Pouches,Stone Paper Bags. Also,Stone Paper Books,Stone Paper Eco Friendly Tissue Holder.

Winding

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

Stone Carton Board 2mm

Stone Carton Board 3mm, 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,Stone Paper Carton Board. The rope-Stone Paper Film 60um.

Drawing tow

• 1 Newly-Stone Paper Film.Stone Card Paper 250um.

Crimping

• 2 Drawn tow is then fed into compression boxes,Stone Paper 180um, at a rate of 9-15 crimps per inch (3-6 per cm).Stone Paper Soft.

Setting

• 3 After the tow is crimped, it is heated at 212-302°F (100-150°C)Full Automatic Marshmallow Production Line.Deposited Marshmallow Line.

Cutting

• 4 Following heat setting,Full Automatic Extruded Marshmallow 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)Popping Boba Line.Chocolate Blocks Guitar Cutter, such ascarpet,polyester filaments are cut into 6 inch (15 cm)Chocolate Slicing Machine.

The Future

Small Chocolate Machine,Chocolate Enrobing Line's fastest-growing fiber.Chocolate Tempering Machine. 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,Chocolate Blocks Crusher, was introduced to the public in 1991. More luxurious and versatile than traditional polyester,Chocolate Paste Making Equipment. Clothing designers such as Mary McFadden have created a line of clothes using this new form of polyester.Chocolate Forming Moulds, a superfiber material used to make bulletproof vests. This type of polyester may eventually be used as composite materials for cars and airplanes.