A continuous sealing device, used for performing heat sealing on a plurality of film sheets (9a,9b), wherein the continuous sealing device comprises: a first roller, having a first circumference, wherein the first circumference comprises at least one first heat sealing segment and at least one first non-heat sealing segment; at least one first heating member, located at the at least one first heat sealing segment, wherein when the first roller rotates, the at least one first heating member bonds the film sheets (9a,9b) in a heat sealing manner to form a first bonding segment; a second roller, having a second circumference, wherein the second circumference and the first circumference have an equal length, the second circumference comprises at least one second heat sealing segment and at least one second non-heat sealing segment, and the length of the at least one first heat sealing segment and the at least one second heat sealing segment is greater than or equal to the first circumference; and at least one second heating member, located at the at least one second heat sealing segment, wherein when the second roller rotates, the at least one second heating member bonds the film sheets (9a,9b) in a heat sealing manner to form a second bonding segment, and the first bonding segment and the second bonding segment are connected to form an uninterrupted heat sealing wire on the film sheets (9a,9b); wherein the first roller and the second roller are disposed at the same side of any one of the plurality of film sheets (9a,9b); and characterised in that a pitch exists between the first roller and the second roller, and the pitch is less than or equal to the length of the at least one first heat sealing segment and the at least one second heat sealing segment. a first roller, having a first circumference, wherein the first circumference comprises at least one first heat sealing segment and at least one first non-heat sealing segment; at least one first heating member, located at the at least one first heat sealing segment, wherein when the first roller rotates, the at least one first heating member bonds the film sheets (9a,9b) in a heat sealing manner to form a first bonding segment; a second roller, having a second circumference, wherein the second circumference and the first circumference have an equal length, the second circumference comprises at least one second heat sealing segment and at least one second non-heat sealing segment, and the length of the at least one first heat sealing segment and the at least one second heat sealing segment is greater than or equal to the first circumference; and at least one second heating member, located at the at least one second heat sealing segment, wherein when the second roller rotates, the at least one second heating member bonds the film sheets (9a,9b) in a heat sealing manner to form a second bonding segment, and the first bonding segment and the second bonding segment are connected to form an uninterrupted heat sealing wire on the film sheets (9a,9b); wherein the first roller and the second roller are disposed at the same side of any one of the plurality of film sheets (9a,9b); and characterised in that a pitch exists between the first roller and the second roller, and the pitch is less than or equal to the length of the at least one first heat sealing segment and the at least one second heat sealing segment.