Patent ID: 9139320
Filing Date: 2015-09-22
Classification: B65B

Abstract:
1. A packaging machine which seals a cover-film to a tray, which has been previously filled with a packaging item wherein the packaging machine comprises: i. an upper tool; ii. a lower tool which are pressed together during the sealing of the cover-film to the tray; and iii. a means to detect misalignment of the packaging item in the tray and/or misalignment of the tray in the lower tool prior to and/or during the sealing of the cover film to the tray; and wherein the means monitors a space between the upper tool and the lower tool and upon detection of the misalignment of the packaging item in the tray and/or misalignment of the tray in the lower tool a signal is sent so that the upper tool and the lower tool are stopped and protected from damage.