A mechanical touch fastener assembly (10,101) characterized by comprising: a first longitudinally continuous tape carrying a series of first fastener patches (12,12a) on a surface thereof, the first patches (12,12a) arranged in a row along a length of the first tape and carrying a field of first touch fastening features on a surface opposite the first tape, each first patch (12,12a) longitudinally spaced from adjacent first patches (12,12a) such that the first tape surface is exposed between the first patches (12,12a); and a second longitudinally continuous tape carrying a series of second fastener patches (14,14a,14b,14c) on a surface thereof, the second patches (14,14a,14b,14c) arranged in a row along a length of the second tape and carrying a field of second touch fastening features on a surface opposite the second tape, each second patch (14,14a,14b,14c) longitudinally spaced from adjacent second patches (14,14a,14b,14c) such that the second tape surface is exposed between the second patches (14,14a,14b,14c); wherein the first tape comprises a first release liner covering adhesive surfaces of the first fastener patches (12,12a), and the second tape comprises a second release liner covering adhesive surfaces of the second fastener patches (14,14a,14b,14c), the first and second tapes being wound together to form a roll, with each of the first fastener patches (12,12a) releasably engaged to a respective one of the second fastener patches (14,14a,14b,14c) by inter-engagement of the first and second touch fastening features, and with the engaged fastener patches disposed between the first and second release liners; and wherein as wound to form the roll, one patch of an engaged pair of first and second fastener patches has a leading edge (52,52b,52c) disposed behind a leading edge of another patch of the engaged pair of first and second fastener patches, in an unwind direction of the roll. a first longitudinally continuous tape carrying a series of first fastener patches (12,12a) on a surface thereof, the first patches (12,12a) arranged in a row along a length of the first tape and carrying a field of first touch fastening features on a surface opposite the first tape, each first patch (12,12a) longitudinally spaced from adjacent first patches (12,12a) such that the first tape surface is exposed between the first patches (12,12a); and a second longitudinally continuous tape carrying a series of second fastener patches (14,14a,14b,14c) on a surface thereof, the second patches (14,14a,14b,14c) arranged in a row along a length of the second tape and carrying a field of second touch fastening features on a surface opposite the second tape, each second patch (14,14a,14b,14c) longitudinally spaced from adjacent second patches (14,14a,14b,14c) such that the second tape surface is exposed between the second patches (14,14a,14b,14c); wherein the first tape comprises a first release liner covering adhesive surfaces of the first fastener patches (12,12a), and the second tape comprises a second release liner covering adhesive surfaces of the second fastener patches (14,14a,14b,14c), the first and second tapes being wound together to form a roll, with each of the first fastener patches (12,12a) releasably engaged to a respective one of the second fastener patches (14,14a,14b,14c) by inter-engagement of the first and second touch fastening features, and with the engaged fastener patches disposed between the first and second release liners; and wherein as wound to form the roll, one patch of an engaged pair of first and second fastener patches has a leading edge (52,52b,52c) disposed behind a leading edge of another patch of the engaged pair of first and second fastener patches, in an unwind direction of the roll.