PACKAGING MATERIAL FOR CELL CASE INCLUDING CORE LAYER AND INNER LAYER WHICH ARE ATTACHED BY ADHESIVE COMPOSITIONS CONSISTING OF POLYOLEFIN POLYOL AND MULTI-FUNCTIONAL ISOCYANATE HARDENER

摘要

PURPOSE: A packaging material for a cell case is provided to prevent deterioration of adhesive strength between a core layer and an inner resin layer, to reduce moisture permeability, and to give excellent shape ability. CONSTITUTION: The packaging material for a cell case includes an outer layer formed from a heat-resistant resin film, a core layer formed from an aluminum foil, and an inner layer formed from a thermoplastic resin film. The core layer and inner layer are attached to each other by adhesive compositions which essentially consist of polyolefin polyol and multi-functional isocyanate hardener. An amount of usage of multi-functional isocyanate hardener is ranged within 1.0-10.0 of mole ratio of isocyanate to hydroxyl radicals of polyolefin polyol.