A process for assessing continuity of a functional layer of a web, comprising: A. forming the web by extruding a thermoplastic material through an annular die to form an annular tape (32, 60, 170, 200), quenching the tape and collapsing the tape into a lay-flat configuration, B. forwarding the web at a speed of at least 5 meters per minute, C. detecting the presence of the functional layer and a discontinuity in the functional layer, by inspecting the web with a machine vision system capable of detecting the presence or absence of a detectable component in the functional layer; and D. generating a signal (90, 92, 96, 110, 112, 114, 116, 150, 180, 220) in response to the discontinuity in the functional layer, the functional layer comprising a blend of a thermoplastic composition and a detectable component, the detectable component being present at a detectable level in the functional layer, wherein the annular tape (32, 60, 170, 200) is reheated to its softening point and oriented while in the solid state after quenching, and inspecting the oriented film is carried out as an inspection of the oriented film tubing in its lay-flat characterization by scanning the annular tape (32, 60, 170, 200) while the tape is in motion, wherein the scanning is carried out by a camera positioned downstream of a point at which the tape is quenched and collapsed into the lay-flat configuration, the process being further characterized in that the annular tape is subjected to solid state orientation to form an annular film which is thereafter converted to a plurality of bags, and a camera is positioned to scan the bags before a product is placed inside the bags. A. forming the web by extruding a thermoplastic material through an annular die to form an annular tape (32, 60, 170, 200), quenching the tape and collapsing the tape into a lay-flat configuration, B. forwarding the web at a speed of at least 5 meters per minute, C. detecting the presence of the functional layer and a discontinuity in the functional layer, by inspecting the web with a machine vision system capable of detecting the presence or absence of a detectable component in the functional layer; and D. generating a signal (90, 92, 96, 110, 112, 114, 116, 150, 180, 220) in response to the discontinuity in the functional layer, the functional layer comprising a blend of a thermoplastic composition and a detectable component, the detectable component being present at a detectable level in the functional layer, wherein the annular tape (32, 60, 170, 200) is reheated to its softening point and oriented while in the solid state after quenching, and inspecting the oriented film is carried out as an inspection of the oriented film tubing in its lay-flat characterization by scanning the annular tape (32, 60, 170, 200) while the tape is in motion, wherein the scanning is carried out by a camera positioned downstream of a point at which the tape is quenched and collapsed into the lay-flat configuration, the process being further characterized in that the annular tape is subjected to solid state orientation to form an annular film which is thereafter converted to a plurality of bags, and a camera is positioned to scan the bags before a product is placed inside the bags. the process being further characterized in that the annular tape is subjected to solid state orientation to form an annular film which is thereafter converted to a plurality of bags, and a camera is positioned to scan the bags before a product is placed inside the bags.