US Patent 10166418 Fire protection strip

A fire-protection tape (24) to be laid into gaps (12) in walls or ceilings (10) of buildings, having at least two main plies (26a, 26b) composed of an intumescent material, and at least one intermediate ply (30a) composed of a second intumescent material disposed between adjacent main plies (26a, 26b), wherein the second intumescent material has a lower intumescence temperature than the material of the main plies (26a, 26), and wherein the main plies (26a, 26b) have a first longitudinal edge (32a, 32b) on one outer side and a second longitudinal edge (34a, 34b) on the opposite outer side, in each instance.