US Patent 11987910 Base cloth for material and manufacturing method therefor

Provided are a base cloth for a material and a manufacturing method therefor, the base cloth suppressing opening of a boundary portion between an expanding part and a non-expanding part when used in a bag body, having low dynamic air permeability, and being capable of exhibiting the characteristic of being unlikely to burst even at high temperatures. A fabric base cloth for a material according to the present invention is composed of fibers having a prescribed thread breaking strength value, and for which the cloth surface is not subjected to resin coating, laminating, or a resin impregnation treatment.