US Patent 7552835 Multiple pack and method of producing same

Method of producing a multiple pack subdivided into at least two chambers separate from one another and each containing a product, characterized in that a first pack element having at least one chamber containing a first product is subjected to a first treatment process and is sealed, either previously or subsequently, and a second pack element having at least one chamber containing a second product is subjected to a second treatment process, which is different from the first, and is sealed, either previously or subsequently, and that the two pack elements are assembled into one unit to form the multiple pack.