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#4
December 3rd 04, 10:42 PM
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Ron Natalie wrote:
snip Rubber is porus. The mylar (what you are calling aluminum) isn't. Actually mylar is porous hence the aluminium layer. Most plastic films are porous even to largish molecules hence the use of an aluminium layer in any sachet packaging where this may be a problem. -- regards jc LEGAL - I don't believe what I wrote and neither should you. Sobriety and/or sanity of the author is not guaranteed EMAIL - and are not valid email addresses. news2x at perentie is valid for a while. 
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