SHEET-LIKE MASK

PROBLEM TO BE SOLVED: To provide a sheet-like mask which is caused to suppress the occurrence of buckling, even when a predetermined tension is applied in an X-axis direction to a sheet-like mask.SOLUTION: A sheet-like mask Sm is run synchronously in the same direction as that of a sheet-like substrate SW1 to be run in one direction. The sheet-like mask Sm comprises: a plurality of longitudinal bands 71 individually extending in an X-axis direction, when the running direction of the sheet-like substrate SW1 and the sheet-like mask Sm is set in the X-axis direction and when the width direction of the sheet-like mask Sm orthogonal to the X-axis direction is set in the Y-axis direction; and a plurality of lateral bands 72 bridging the mutually-adjacent longitudinal bands 71 individually extending in the Y-axis direction. These longitudinal bands 71 and the lateral bands 72 define an opening 73. The sheet-like mask Sm constitutes the longitudinal bands 71 and the lateral bands 72 such that the sum of elongation quantities Da and Db in the X-axis direction at an intersection point CP of the two sides 72a and 72b of the lateral bands 72 with the longitudinal bands 71 may not exceed a predetermined value in the state where a predetermined tension is given in the X-axis direction to the sheet-like mask Sm.SELECTED DRAWING: Figure 3 【課題】シート状のマスクに対してＸ軸方向に所定の張力を付与したときでも座屈の発生が抑制されるようにしたシート状のマスクの提供。【解決手段】一方向に走行されるシート状の基材ＳＷ１に対して同方向に同期して走行されるシート状のマスクＳｍであって、シート状の基材ＳＷ１とシート状のマスクＳｍとの走行方向をＸ軸方向、Ｘ軸方向に直交するシート状のマスクの幅方向をＹ軸方向とし、Ｘ軸方向に夫々のびる複数本の縦帯部７１と、Ｙ軸方向に夫々のびて互いに隣接する縦帯部７１間を橋渡す複数本の横帯部７２とを備え、これら縦帯部７１と横帯部７２とで開口部７３が区画され、シート状のマスクＳｍにＸ軸方向に所定の張力が付与された状態で、横帯部７２の両辺７２ａ，７２ｂの縦帯部７１との交点ＣＰにおけるＸ軸方向の伸び量Ｄａ，Ｄｂの和が所定値を超えないように縦帯部７１と横帯部７２とを構成するシート状のマスクＳｍ。【選択図】図３