| 摘要 |
PROBLEM TO BE SOLVED: To provide a spacer sheet having a specific structure capable of ensuring good air permeability between structural bodies. SOLUTION: For the spacer sheet having projections with a uniform height within a range of the height of 0.5 to 2.5 mm or having a large number of projections on one side, large and small spheres of projection density or projected stripe density are mixed on the sheet.
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