| 摘要 |
Multiple layer flexible sheet structures, useful for sealing paste, comprise (a) an exterior heat sealable layer, (b) the 1st adhesive layer, (c) a barrier layer, (d) the 2nd adhesive layer, (e) an opp (oriented polypropylene) layer and (f) a polyethylene layer. Each layer tightly adheres to each other sequently to form a single structure, and adhesive forces of the 2nd adhesive layer and polyethylene layer are made to be most effective for the opp layer to have strong adhesion to the structures applied.
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