| http://www.w3.org/ns/prov#value | - This blown film coextrusion is particularly preferred for the production of the multi-layer film of the present invention in that since the foaming agent-containing resin layer is completed covered by the resin layers(A) and (C), expansion is satisfactorily achieved, problems such as deposits which is produced by decomposition product of foaming agents to die do not occur, and thus the multi-layer
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