NOVELTY - A sheet-like sealing material contains silicone resin (X1) and hollow particles (Y1) dispersed in the silicone resin (X1). Particles (Y1) have inner cavity portion and outer shell consisting of thermoplastic resin. Silicone resin (X1) is formed by curing the curable silicone resin composition which is obtained by mixing the organic compound (B1) which has 1 or more carbon-carbon double bond in a molecule with addition-reaction type silicone resin component (A1).    USE - Sheet-like sealing material used for laminated sheet sealing material for solar cell panels of solar cell module, vehicle mirror, lamp, air-conditioner, unit components of sunroof, face panel and dash panel of motor vehicles, clearance gap on panel, and periphery of motive power source of vehicle (all claimed) e.g. internal combustion engines e.g. gasoline engine and diesel engine, and electrical motor. Can also be used for interior material of transport unit excluding vehicles e.g. aircraft, fuel cell, domestic fuel cell cogeneration system and gas turbine.    ADVANTAGE - The sheet-like sealing material has excellent secondary fabrication property, applicability to solar cell panel, shock absorption property, and exhibits excellent sealing performance.    DETAILED DESCRIPTION - INDEPENDENT CLAIMS are included for the following:    (1) laminated sheet sealing material, which has a resin film laminated on a surface of the sheet-like sealing material;    (2) solar cell module, which has a solar cell panel, fixing component which fixes the edge portion of the solar cell panel, and the sealing material arranged between the solar cell panels;    (3) manufacture of sheet-like sealing material, which involves which carrying out heat-foaming of the particles having foamability to obtain the hollow particles (Y1), mixing the hollow particles (Y1) with addition-reaction type silicone resin component (A1) and organic compound (B1) to obtain a sealing material composition, forming the sealing material composition into sheet form, and heat-hardening the sheet; and    (4) manufacture of laminated sheet sealing material, which involves obtaining and heat-hardening the sealing material composition in a overlapped state on the resin film to form the laminated sheet sealing material having the resin film laminated on the sheet-like sealing material which has foam formed in the cavity portion of the hollow particles (Y1).