3Piece Tinplate Aerosol Cans（3块马口铁气溶胶罐）.pdfVIP

3-Piece Tinplate Aerosol Cans Factors in Container Selection and The Manufacturing Process Southern Aerosol Technical Association Aerosol 101 – Three Piece Steel Cans March 23, 2011 Kevin Richards – BWAY Corporation Overview Factors and Test Methods - Container Selection Regulatory / USDOT Requirements Commercial Standards / CSPA Materials and the Can Manufacturing Process Can Size and Style Aerosol Can Sizes  Sales Code Designation  Expresses can diameter (at doubleseam) X can height (doubleseam to doubleseam)  Three digit number  First digit = whole number of inches  Second two digits = 16th’s of an inch  Example: 211 x 604  Can Diameter = 2-11/16 inches  Can Height = 6-4/16 inches Can Size and Style Formula/Container Selection Solvent or water-based formula Typically  Solvent-based: plain (unlined) cans  Water-based: plain or lined cans Formula/Container Selection pH is a critical factor in corrosivity and when considering whether to employ a can lining pH 7.0 recommended, 8.0 even better  pH 7-9, consider lined cans  Linings often unnecessary and incompatible with more alkaline formulas pH 9 or 10, consider plain cans  Consider adding corrosion inhibitors to combat liquid and/or vapor phase corrosion Formula/Container Testing To avoid product and container degradation, a variety of test methods are available to evaluate formula/container compatibility  Electrochemical Testing  Testpacks / Can Stability Electrochemical Testing  Several “accelerated” corrosion test methods are commonly used, often in combination  Crevice cell, driven can cell, cyclic pol