| http://www.w3.org/ns/prov#value | - In another preferred embodiment of the present invention, the gumming station, including the first, second, and third gumming unit, has the configuration of a cascade system, i.e., the gum solution, used in the third gumming unit and present in the third tank, overflows from the third tank to the second tank and, further, from the second tank to the first tank when gum replenishing solution is add
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