Evolution of the Aerosol Can suspected of causing various diseases in laboratory rats since the 1950s, when they ate the resin, the extremely small (usually undetectable) amounts of dangerous bisphenol A (BPA) released from epon-phenolic can linings into products has prevented any regulatory responses until recently. This changed when the State of California determined that BPA should be considered a hazardous material under its Proposition 65. Its ruling may affect not only over two billion lined aerosol dispensers, but more than a hundred times that number of other containers, such as food and beverage cans. The use of epon-phenolic resins is worldwide. As of now, no human cancers or other diseases have been linked to BPA. From time to time, special aerosol container adaptations have been made for major products or customers. One example is the “blind” two-piece, plain interior, DOT-2P, 211-diameter can made by Crown for Bromo-o-Gas and other methyl bromide-based soil fumigants. The restricted use pesticide ingredients are typically 98% methyl bromide and 2% chloropicrin. The can is usually filled through the open bottom with about 24 ounces (610g) of chilled poisonous product, after which the bottom segment is double seamed to the body. A special double seaming compound is used that resists the intense solvent action of the methyl bromide. This can and technique are necessary because no aerosol valve could be found where the gaskets could withstand the product. The separate directions show how a special brass valve and spray head can be strapped to the can, puncturing it for immediate use. A major application is the fumigation of greenhouses used to grow tomato seedlings. The U.S. aerosol can-making industry is both dynamic and resilient. The quality of its many products is exemplary—especially when compared to those early cans that sometimes showed weld and double seam leakage, and might prove defective from buckling (bulging) in hot water baths. Based on their performance to date, we can confidently predict a bright future for this important segment of our aerosol industry. SPRAY Two-piece DCC (Dispensing Container Corp.) 202 x 700 plain interior tinplate can from 2003. It is now obsolete. Two-piece 207.5 x 502 gray-lined tinplate can. Obsolete Threepiece 202 x 314 lined can. GRIPPER SERIES HOT WATER LEAK TEST TANK Terco, Inc. 459 Camden Drive, Bloomingdale, IL 60108 U.S.A. | Tel: +1 630-894-8828 | www.terco.com sales@terco.com 24 Spray June 2016 INLINE SERIES WITH OPTIONAL PLC CONTROLLED CHANGEOVERS AUTOMATED PLC CONTROLLED PRODUCT FILLING MEASURING CHAMBERS AUTOMATED PLC CONTROLLED PROPELLANT CHARGER MEASURING CHAMBERS
Spray June 2016
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