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Anode Bags: Materials, Characteristics & Usage |
| Material | Characteristics | Philip Machine Recommended Usages |
| Cotton | Sateen Weave. 6.5 oz. weight. 25 CFM rating. | Barrel nickel, alkaline copper, and nickel with cathode agitation. |
| Napped Polypro (poly nap) (10 to 20 CFM) |
Heavy 13 Oz. material with good napping on the inside surface. Combines the filtration qualities of cotton and the wet stregth of synthetics. | Used in all acid baths which are highly air agitated and where large anode area exists. The superior fabric for particle retention. |
| Polypropylene (20 to 30 CFM) |
Spun yarns, light weight, good tensile strength. Smooth surface. Good filtration characteristics. 8 oz. weight | The universal anode bag material for all acid, cyanide, and air agitated solutions. Maximum temperature is 180° F. |
| Synel (Open weave polypro) 50 to 70 CFM |
High acid resistance and excellent wet strength. Good solution transfer from anode. 7 oz. weight. Max temperature 180° F. | All fluoborate baths, acid tin, air agitated baths. More open weave construction than standard polypropylene. |
| Nylon (Various micron ratings available) |
Good alkaline resistance. Variety of micron sizes. Maximum temperature 225° F. | Excellent mildew and abrasion resistance. Fine and coarse materials. |
| Cotton Duck | A heavier weight natural cotton filter fabric. 10 oz. weight. | Barrel nickel, alkaline copper, and nickel with cathode agitation. |
| 3 x 1 Twill Polypropylene (20 to 30 CFM) |
Lint free woven polypropylene. Very smooth surface. Good filtration. | Premium anode bag material for all acid, cyanide, and air agitated solutions. Maximum temperature 180° F. |
| Spun Bonded Polypropylene (220 CFM) |
Bonded fibers. Lint free with excellent cake release and abrasion resistance. High strength to weight ratio. 1.5 oz. weight | Resistant to most acids, bases, and solvents. Mildew resistant. Can be used as a cover fabric on multi-layer bags. |
| Mono-Filament Polypro (Various micron ratings) |
100% Polypropylene. Micron and CFM rated. Basket (std.), plain, twill, and satin weaves are available. 5.4 to 6.2 oz. weight. Extremely strong with very smooth surface. Superior cleaning characteristics. | Excellent resistance to most acids and alkalis except oxidizing agents. Great as reusable filter media, carbon bags, or as added reinforcement for weaker fabrics when the pressure is high. |
| 14 oz. Polypropylene (8 to 15 CFM) |
Spun yarns, heavy weight, excellent tensile strength. Good filtration characteristics and permeability. Maximum temperature 180° F. | Heavy Material for all acid, cyanide and air agitated solutions. Heavier material construction than our standard polypropylene. |
| Cotton Flannel | Heavy weight cotton with napping on the inside surface. Combines the filtration qualities of cotton with the depth retention of napping. 9 oz. weight. | Excellent alternative to our regular cotton where a higher degree of suspended solids requires a heavier weight material. |
| Polypropylene Microfelt (1 to 200 Micron) |
Choice of synthetic media available from 1 to 200 micron. Some fabrics available with glaze or singe on one side. Maximum temperature 180° F. | For electroless copper & nickel filtration. Also special applications such as air purification. Often used in ring, flange, and snap ring filter bags. |
| Melt Blown Polypropylene (10 to 150 CFM) |
Exceptional particle retention efficiency (>90%). Very fine fibers, multi layered, for high loft and good flow rates. Often used in water treatment. Can be combined in multi-layer bags for extreme filtration. | Water and waste treatment, carbon removal, fine filtration of acids, bases, and solvents. |
| Polyester Felt | Max temperature 300° F. 10 to 18 oz. weights. 1 to 100 micron ratings. Alternative to polypro when applicable. | Good resistance to most mineral acids and weak alkalis. Excellent resistance to bleaches. Not to be used with concentrated sulfuric acid. |
| Spun Bonded Polyester (195 CFM) |
Bonded fibers. Lint free with excellent cake release and abrasion resistance. High strength to weight ratio. Higher temperature rating than polypropylene. 4 oz. weight. | Very good bleach resistance. Mildew resistant. Used in waste treatment applications. Not for use with sulfuric acid. Can be used as a cover fabric on multi-layer filter bags. |
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