Polyester

Background

99.9% Pure Refrigerant Gas R22, air, water, and petroleum. Developed in a 20th-century laboratory,Refrigerant Gas R22 In Disposable Cylinder. In this reaction,Refrigerant Gas R32 In Substitution For R22.99.9% Purity Refrigerant Gas R134a.

Polyester is used in the manufacture of many products, including clothing, home furnishings,Car Air Conditioner Refrigerant R134a Gas Cylinder, computer and recording tapes, and electrical insulation.Tetrafluoroethane Refrigerant Gas R134a. It does not absorb moisture, but does absorb oil;Refrigerant Gas R134a-, soil-, and fire-Forged Gate Valve. Its low absorbency also makes it naturally resistant to stains.Gate Valve,Globe Valve.Butterfly Valve, and not damaged by mildew.Cast Steel Swing Check Valve 300-5000wog, nonallergenic insulator, so the material is used for filling pillows, quilting, outerwear, and sleeping bags.

History

In 1926,Stainless Steel Ball Check Valve-based E.I. du Pont de Nemours and Co.Forged Lift Check Valve Class 800#. This early research, headed by W.H. Carothers,Swing Check 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,Threaded Check Valve. The company conducted some further developmental work, and in 1951, began to market the fiber under the name Dacron.Lcc Flanged Check Valve Class 150#,Check Valve. 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.Grooved Ductile Iron Ball Valve, though PCDT is more elastic and resilient. PCDT is suited to the heavier consumer uses, such as draperies and furniture coverings.Grooved 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,Ductile Iron Ball Valve Full Port. In this process, ethylene is the polymer, the chemical building block of polyester,2pc Cast Steel Ball Valve Full Port 2500-5000wog.

The Manufacturing
Process

Polyester is manufactured by one of several methods.Ductile Iron Bolted Ball Valve Reduced Port 1000-2000wog. The four basic forms are filament,Bolted Ball Valve, tow, and fiberfill. In the filament form,Cast Steel Bolted Ball Valve Reduced Port 3000wog, producing smooth-4c Bolted Ball Valve Full Port 5000wog.Cast Steel Floating Flanged Ball Valve Class 150#, filaments are cut to short,Cast Steel Floating Flanged Ball Valve Class 600#.Stainless Steel Floating Flanged Ball Valve Class 150#. 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.Trunnion Ball Valve.

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-Cast Iron Flanged Ball Valve,Cast Iron Floating Flanged Ball Valve JIS 10k, is extruded through a slot to form long ribbons.

Drying

• 3 After the polyester emerges from polymerization,Ball Valve JIS 10k. 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.Ball Valve ANSI, which are usually round,Stainless Steel Floating Flanged Ball Valve Class. The number of holes in the spinneret determines the size of the yarn,Cast Iron Floating Flanged Ball Valve JIS 16k.
• 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,Flnaged Ball Valve. 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,Ball Valve.
• Custom Printed Your Own Logo Cardboard Packaging Yellow Brown Kraft Gift Craft Shopping Paper Bag with Handles,To Go Containers Food Disposable Wheat Straw Bento Box Microwavable Lunch. Also,Compostable Grease Proof Bagasse Pulp Lunch Packaging Box Food Container,Gift Card Carrier Box.

Winding

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

Hexagon Box

Paper Box With Custom Logo, 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,Round Paper Cardboard Gift Box. The rope-Custom Luxury Jewelry Case.

Drawing tow

• 1 Newly-Aluminum Foil Bag.Bags&Pouches.

Crimping

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

Setting

• 3 After the tow is crimped, it is heated at 212-302°F (100-150°C)Stone Paper Eco Friendly Tissue Holder.Stone Carton Board 2mm.

Cutting

• 4 Following heat setting,Stone Carton Board 3mm. 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)Stone Paper Carton Board.Stone Paper Film 60um, such ascarpet,polyester filaments are cut into 6 inch (15 cm)Stone Paper Film.

The Future

Stone Card Paper 250um,Stone Paper 180um's fastest-growing fiber.Stone Paper Soft. 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,Full Automatic Marshmallow Production Line, was introduced to the public in 1991. More luxurious and versatile than traditional polyester,Deposited Marshmallow Line. Clothing designers such as Mary McFadden have created a line of clothes using this new form of polyester.Full Automatic Extruded Marshmallow 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.