Abstract: A sanitary mask sheet, in which a WC value indicating a work volume up to a maximum pressure in a thickness direction is 0.3 Pa·m or more, and a capture rate of particles having a particle diameter of more than 1 ?m is 85% or more.

Abstract: A fluid control device includes a first block row and a second block row each including a plurality of joint blocks having a width of the standard size and arranged along a first directions, the first block row and the second block row being arranged at predetermined intervals in the second directions perpendicular to the first directions, wherein each of the plurality of joint blocks constituting the first block row has a large diameter flow path for forming a single line, and each of the plurality of joint blocks constituting the second block row has a smaller diameter flow path than the large diameter flow path for forming the first line and the second line.

Abstract: A valve device includes: a body having a substantially block shape in which first and second valve chambers are recessed from an upper surface, and three flow paths communicating with the first valve chamber and three flow paths communicating with the second valve chamber are formed inside the body; first and second valve members disposed in the first and second valve chambers, respectively, to switch between communication and disconnection between one of the three flow paths and the other two flow paths; and first and second actuators for respectively driving the first and second valve members, wherein the other two flow paths communicating with the each of valve chambers have respective ports on the lower surface of the body, while the one flow path has a common port on the lower surface of the body.

Abstract: A fluid control device includes a first block row and a second block row each including a plurality of joint blocks having a width of the standard size and arranged along a first directions, the first block row and the second block row being arranged at predetermined intervals in the second directions perpendicular to the first directions, wherein each of the plurality of joint blocks constituting the first block row has a large diameter flow path for forming a single line, and each of the plurality of joint blocks constituting the second block row has a smaller diameter flow path than the large diameter flow path for forming the first line and the second line.

Abstract: A valve device includes: a body having a substantially block shape in which first and second valve chambers are recessed from an upper surface, and three flow paths communicating with the first valve chamber and three flow paths communicating with the second valve chamber are formed inside the body; first and second valve members disposed in the first and second valve chambers, respectively, to switch between communication and disconnection between one of the three flow paths and the other two flow paths; and first and second actuators for respectively driving the first and second valve members, wherein the other two flow paths communicating with the each of valve chambers have respective ports on the lower surface of the body, while the one flow path has a common port on the lower surface of the body.