| 摘要 |
Structure for retaining and confining the side-by-side edges and edge portions of stretchable elastomer sheets, comprises, in combination with the sheets, edges and edge portions: (a) a stretchable smooth surfaced band folded into U-shape over such edges to define band portions extending at opposite outer sides of the sheet side-by-side edge portions, (b) and stitching extending through those folded band portions and through the sheet edge portions in spaced relation to the sheet edges, the stitching tightened to locally compress the sheets along a linear zone extending parallel to such edges and spaced therefrom, the edges and edge portions then everywhere confined and covered by the U-shaped band.
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