A factory for manufacturing an absorbent article by using a plurality of types of materials, comprising: a building including: an upper story; and a lower story located below the upper story, the upper story including: a floor; a wall provided along an entire periphery of the floor; an illumination device provided on a ceiling; and an air conditioner having an air outlet for discharging air, the lower story including: a floor; a wall provided along an entire periphery of the floor; an illumination device provided on a ceiling; and an air conditioner having an air outlet for discharging air, an opening through which the upper story and the lower story communicate being formed in the floor of the upper story, the upper story further including a paying-out device to which a material coil on which a nonwoven fabric is wound is attached and that pays out the nonwoven fabric, the nonwoven fabric serving as at least one type among the plurality of types of materials, the lower story further including a processing section that processes the plurality of types of materials including the nonwoven fabric that is transported from the upper story through the opening, wherein an air pressure at a boundary position between a space on the lower story and the opening is higher than an air pressure at a boundary position between a space on the upper story and the opening. a building including: an upper story; and a lower story located below the upper story, the upper story including: a floor; a wall provided along an entire periphery of the floor; an illumination device provided on a ceiling; and an air conditioner having an air outlet for discharging air, the lower story including: a floor; a wall provided along an entire periphery of the floor; an illumination device provided on a ceiling; and an air conditioner having an air outlet for discharging air, an opening through which the upper story and the lower story communicate being formed in the floor of the upper story, the upper story further including a paying-out device to which a material coil on which a nonwoven fabric is wound is attached and that pays out the nonwoven fabric, the nonwoven fabric serving as at least one type among the plurality of types of materials, the lower story further including a processing section that processes the plurality of types of materials including the nonwoven fabric that is transported from the upper story through the opening, wherein the upper story including: a floor; a wall provided along an entire periphery of the floor; an illumination device provided on a ceiling; and an air conditioner having an air outlet for discharging air, the lower story including: a floor; a wall provided along an entire periphery of the floor; an illumination device provided on a ceiling; and an air conditioner having an air outlet for discharging air, an opening through which the upper story and the lower story communicate being formed in the floor of the upper story, the upper story further including a paying-out device to which a material coil on which a nonwoven fabric is wound is attached and that pays out the nonwoven fabric, the nonwoven fabric serving as at least one type among the plurality of types of materials, the lower story further including a processing section that processes the plurality of types of materials including the nonwoven fabric that is transported from the upper story through the opening, wherein an air pressure at a boundary position between a space on the lower story and the opening is higher than an air pressure at a boundary position between a space on the upper story and the opening.