Abstract: An attachment device comprises a filament having a normally laterally oriented bar at one end and a unitary hollow body member at its other end. The body member has a sidewall, an apertured end wall, a heat sealed end wall opposed thereto and a flange which projects outwardly from the sidewall and functions as a heat sink to permit heat sealing of the end wall without heat deformation of the apertured end wall and the portion of the sidewall adjacent thereto. The aperture in the end wall is large enough to receive the filament and the bar when they are in parallel orientation, but of a width smaller than the length of the bar so as to prevent the withdrawal of the bar from the hollow interior subsequent to insertion. An assembly of attachment devices suitable for use with an attaching mechanism comprises a plurality of such attachment devices and securing means interposed between and connected to the flanges to secure adjacent body members together.

Abstract: An attachment device comprising a filament having a laterally oriented bar at one end and a hollow body member at its other end, a wall of said body member having an opening therethrough large enough to receive the filament and the bar when they are in parallel orientation but of a width smaller than the length of the bar so as to prevent the withdrawal of the bar from the hollow interior subsequent to insertion, a self-contained, interlocked attachment thereby being obtained.