Paper cup has interior cup, where interior cup has interior cup case and liquid-impermeable base connected with interior cup case

摘要

The paper cup (10) has an interior cup (12), where the interior cup has an interior cup case (18) and a liquid-impermeable base connected with the interior cup case. A main component of a paper fiber direction of an outer case (14) runs parallel to a circumferential direction. The interior cup case, the base and the outer case are made of laminar paper sections.