| 摘要 |
Moisture-proof polypropylene film package materials for packaging unit cases in lots, especially for photographic roll film small cases, comprising: (a) a biaxially-stretched polypropylene film substrate having, (i) stretching of 2 to 15 times, (ii) the thermal contraction both in longitudinal and transverse directions of 2-8%, and (iii) the relative ratio of thermal contraction in both directions of 40% or less, (b) polyvinylidene chloride resin coating applied onto at least one surface of the film substrate, and (c) an antistatic agent incorporated in at least one of layers.
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