| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a resin film excellent in resistance to devitrification upon moisture uptake and efficiently blocking radiation. <P>SOLUTION: The resin film includes: a first radiation blocker satisfying the requirement (1) below; a second radiation blocker having a chemical composition different from the chemical composition and satisfying the requirement (2) below; and a polyolefin-based resin, wherein the resin film also satisfies the requirement (3) below. (1): β≤5 wt.%, wherein β is a hygroscopic moisture amount of the first radiation blocker when stored for 72 hours at 23°C under 50% relative humidity, and further stored for 24 hours at 60°C under 50% relative humidity. (2): α≤60, wherein α is a radiation transmission index of the second radiation blocker. (3): the ratio of the weight of the first radiation blocker contained in the resin film to the weight of the second radiation blocker contained in the resin film lies within a range of 3:1 to 8:1. <P>COPYRIGHT: (C)2012,JPO&INPIT |
