Touch fasteners for use as mold inserts in molding seat foam buns include a sheet-form base a magnetically attractable material disposed on the upper face of the sheet-form base, and a film cover covering the magnetically attractable material wherein maximum slope angle of the film cover, is less than about 75.degree. as measured from the upper surface of the sheet form base to the outside surface of the cover. The magnetically attractable material is a strand of frangible composite constructed to be readily segmented with the seat foam bun during recycling.