Patent ID: 8147955

Claim:
A roll of joint-sealing tape for sealing a construction joint, the roll comprising a partially compressed sealing tape of flexible foam capable of recovery after compression having a top surface, a bottom surface and two lateral surfaces, the foam being saturated with an adhesive impregnate, which improves sealing properties of the foam and delays recovery of the foam after it has been compressed, wherein the bottom surface of the sealing tape is covered with a peel-off strip under which a layer of pressure-sensitive adhesive is arranged on the impregnated foam, wherein at least one of the two lateral surfaces is colored with a colorant such that the coloration on said one lateral surface in a partially expanded functional state equivalent to 25-60% of an original thickness of the sealing tape appears to the human eye as a continuous colored surface, whereas no coloration is provided in the central area between the lateral surfaces, wherein an edge area of at least one of the two lateral surfaces of the joint-sealing tape is uniformly colored with the colorant to a depth of up to a few millimeters by means of dipping, spraying, or spreading, and, in a microscopic side view, appears as a network of many differently sized color specks, most of which are connected to each other, wherein, in the partially expanded functional state of the sealing tape, all of the color specks together in the edge area of the lateral surface appear in a microscopic side view to constitute at least 60% of the overall visible surface area, and wherein, after compression, the sealing tape recovers its shape uniformly over the entire width of the sealing tape.