Flat material with cover layer and woven or nonwoven structure for packaging container etc., has substrate made of watertight material attached to cover layer or cover mat

摘要

A base substrate or mat (10) made of watertight material is attached to the cover layer or cover mat. A second cover layer or mat may be attached to the base substrate. The base substrate is preferably fused to the cover layer or cover mat. An independent claim is included for a watertight container.