PURPOSE: To obtain a sheet capable of developing capacities of three chemical agents without directly contacting them with each other, by laminating layers of a fine particulate desiccant group comprising a desiccant component coated with an air permeable polymer membrane, a similar fine particulate deodorant group and a similar fine particulate insect control agent group to a sheet base material in this order.

CONSTITUTION: A suspension of liquid droplets, which are obtained by dripping an aqueous solution of a desiccant component such as calcium chloride in an org. solvent solution of a polymer such as ethyl cellulose is sprayed by a sprayer and dried by a hot air to be accumulated on a sheet base material such as an aluminum foil. By this method, the desiccant layer comprising a fine particulate desiccant group having a particle size of 1W1500μm formed by coating the desiccant component as a core with the polymer film is formed on the base material. Next, a fine particulate deodorant group wherein the ethanol extract of leaves of a camellia is coated with a styrene/ butadiene copolymer film and a fine particulate insect control agent group wherein naphthalene is coated with a polyvinyl alcohol film are successively applied to the desiccant layer in the same way to form a deodorant layer and an insect control agent layer to obtain a sheet.