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Printech, August, 2000
blanket wash


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From:sherry davis(sdavis@oznet.ksu.edu)
Date:Thu, 24 Aug 2000 16:58:51 -0500


To all: I am working with a litho printer (newspaper and some custom jobs) on a P2 assessment. This is my first "real" litho printer assistance effort and I need some help. they are using two types of blanket washes: a very low flash blend of ethylene glycol monobutyl ether, methyl alcohol, ethyl acetate, acetone, and naphtha (last three present at about 9% each) fp=(-4)*F the other cleaner is a dilute solution of diethanolamine with a fp>200*F (Action Blanket Wash) both of these materials have health-related issues but they seem drastically different to me. Is there a blanket wash that's preferred for newspaper print jobs? I'm wondering why they can't use just the Action Blanket Wash by itself? Besides the very low PEL recommendation, it seems to be safer than the other, very low flash material. I don't have usage information and am wondering if the Action material just might be "inventory" that isn't used much. Does anyone have any experience with this blanket wash? Also, In the archives, there is a message about filtration and recycling of spent fountain solution. One reply suggests that shops can double the life of the fountain solution by filtration. Could someone give me more information on such a filtration system or at least the cost basis? This shop can go to the POTW and I would like to know if it's a cost effective P2 option to set up filtration, if they can just discharge the fountain solution to the drain? Their fountain solution is a dilute solution of ethylene glycol. Is that all there is to the fountain solution mixture or have I not gotten the whole picture? If ethylene glycol is all that's in it, then a switch to a propylene glycol solution should be fairly easy and cost effective? If you have information on these topics or useful input please feel free to call me (if that would be easier) at 1-800-578-8898 or return e-mail. thanks in advance for any assistance, sherry davis Sherry J. Davis, CHMM Industrial P2 Specialist 133 Ward Hall,KSU Manhattan, KS 66506-2508 Fax: 785-532-6952 Phone: 1-800-578-8898 sbd@ksu.edu



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