HEAT TRANSFER SUPPRESSION SHEET PRODUCTION METHOD, HEAT TRANSFER SUPPRESSION SHEET, AND BATTERY PACK

To provide a method for producing a heat transfer suppression sheet that can provide strength to retain a shape of a heat transfer suppression sheet and that can provide a high inorganic particle retention performance, thereby maintaining an excellent heat insulation performance. The method for producing a heat transfer suppression sheet includes a processing step of processing, by a dry method, a mixture containing an inorganic particle (4) and a binder fiber (3) having a core-sheath structure into a sheet. The binder fiber (3) having a core-sheath structure includes a core portion (1) extending in a longitudinal direction, and a sheath portion (2) formed to cover an outer peripheral surface of the core portion (1). A melting point of a first organic material constituting the core portion (1) is higher than a melting point of a second organic material (7) constituting the sheath portion (2).