BASE CLOTH FOR HOLLOW WEAVE AIRBAG AND METHOD FOR MANUFACTURING HOLLOW WEAVE AIRBAG BY USE OF THE BASE CLOTH

PROBLEM TO BE SOLVED: To provide a base cloth for a hollow weave airbag and a method for manufacturing a hollow weave airbag by use of the base cloth.SOLUTION: A base cloth for a hollow weave airbag comprising a hollow weave structure which becomes an expansion developing part, and a weave structure which becomes a closed part provided adjacent to a circumference of the hollow weave structure, in which a thermal shrinkage of a first warp, which is used for a closed part which is positioned in an ejection direction of a gas supplied from an inflator and a portion 21 approximate to the closed part, is larger than a thermal shrinkage of a second warp which is used for a closed part at the other position and the expansion developing part 22. Further, the closed part at the other position and the expansion developing part 22 comprise a closed part which is positioned in the ejection direction of the gas supplied from the inflator and an intermediate part adjacent to the portion proximate to the closed part, and a thermal shrinkage of a third warp used for the intermediate part is smaller than that of the first warp and is larger than that of the second warp. In addition, these base cloths are heated and thermally shrunk, and a hollow weave airbag 10 having a prescribed shape is cut out from the base cloth after heating.SELECTED DRAWING: Figure 1 【課題】袋織エアバッグ用基布及びそれを用いた袋織エアバッグの製造方法を提供する。【解決手段】膨張展開部となる袋織組織と、この袋織組織の周縁に隣接して設けられた閉部となる織組織とを備え、インフレータから供給されるガスの噴出方向に位置することになる閉部及びこの閉部に近接する部位２１に用いられる第１経糸の熱収縮率が、他の位置の閉部及び膨張展開部２２に用いられる第２経糸の熱収縮率と比べて大きい。また、他の位置の閉部及び膨張展開部２２は、インフレータから供給されるガスの噴出方向に位置することになる閉部及びこの閉部に近接する部位に隣接する中間部を備え、中間部に用いられる第３経糸の熱収縮率が、第１経糸の熱収縮率より小さく、第２経糸の熱収縮率より大きい。更に、これらの基布を加熱して熱収縮させ、加熱後の基布から所定形状の袋織エアバッグ１０を切り出す。【選択図】図１