Patent ID: 7399983
Filing Date: 2008-07-15
Classification: B29C,B29L,G01N

Abstract:
1. A quality inspection method for inspecting quality of a finally shaped container obtained by forming a web-like packaging laminated material having folding lines in tube shape, longitudinally sealing the packaging material in the longitudinal direction, filling food into the tube-shaped packaging material, pressing the packaging material at every predetermined interval in the crossing direction and sealing by the transversal seal, cutting at the middle of the transversal seal zone and obtaining a pillow-like preliminary forming, and sealing a flap formed by folding along the folding line to the container side wall and/or a container bottom face, comprising: rotating the flap sealed to the container wall around a ridge side where the flap integrally communicates with the container wall to peel the flap from the container wall; returning to a shape of the pillow-like preliminary forming; cutting the container wall to extract the filled food; developing the cut container to prepare a sampled body; measuring an edge of the transversal seal zone on the inside of the container over the whole length of the outer surface of the edge for unevenness of the outer surface by a detecting unit; and judging acceptability of the transversal seal zone based on signals from the detecting unit by an analyzing unit.