PROBLEM TO BE SOLVED: To provide a film or sheet, whereby, in the case of making a hole through the film or sheet to provide it with a gas-liquid circulation hole, the function of the circulation hole is improved.SOLUTION: The surface of a film or sheet 1 of synthetic resin or rubber is provided with a tubular projection 2 allowing gas-liquid circulation, the tubular projection having a hollow diameter of 0.3 mm to 1.5 mm in hole diameter.SELECTED DRAWING: Figure 1COPYRIGHT: (C)2017,JPO&INPIT【課題】フィルムまたはシート等を開孔して気液流通孔を付与する場合に於ける流通孔の機能を改善したフィルム又はシートを提供する。【解決手段】合成樹脂またはゴムのフィルムまたはシート1の表面に気液流通する、孔径0.3mmから1.5mmの中空径を有する管状の突起物2を付与する。【選択図】図1
