Mask material for mask and method for manufacturing the same

The present invention realizes a mask substrate for a mask which exhibits both a collection efficiency based on a charging technique and a heating or thermal insulation function, and is excellent in workability. The filter substrate is formed by integrating a dense heat-insulating layer composed of a moisture-absorbing heat-generating fiber and a friction-charged electric fiber, wherein a through portion allowing the friction-charged electric fiber to protrude from the surface side at one side of the heat-insulating layer and the surface side at the other side is arranged, and the friction-charged electric fiber is configured at the surface sides at two sides. 本发明实现种面罩用过滤器基材，其发挥基于带电技术的捕集效率以及加热或保温功能二者且加工性也优异。是通过如下技术实现的：所述过滤器基材是将由吸湿发热性纤维构成的致密保温层与摩擦带电纤维交织体化而成的，其中，设置上述摩擦带电纤维从上述保温层的方的表面侧向另方的表面侧突出的贯通部，并且将该摩擦带电纤维配置于两侧表面侧而构成。