US Patent 10378215 Attachment system, E.G., for panels

A system for fastening a covering on a surface includes a first assembly comprising a first retaining element; and a second assembly comprising a second retaining element; the first and second retaining elements being configured to engage each other so as to form a reversible bond; the system being characterized in that the first retaining element comprises an array of retaining elements comprising hooks having a height (Hc) lying in the range 0.05 mm (0.0020 in) to 1 mm (0.039 in), and the second retaining element comprises an array of retaining elements comprising loops having a height (Hb) lying in the range 0.1 mm (0.0039 in) to 3.0 mm (0.12 in).