Abstract:
An apparatus for testing the tightness of containers (1) closed by respective membranes (2) comprises a deforming unit (15) configured to exert a deforming action on a plurality of said containers (1), and a detection unit (40) for detecting the deformation of the membrane (2) of each container (1) submitted to the deforming action, wherein said deforming unit (15) comprises a plurality of deforming devices (20), and each deforming device (20) is individually associated with a single and respective container (1) of said plurality of containers to exert said deforming action.
Abstract:
A machine for making filled pasta comprises at least one station for preparing a strip of pasta sheet; a station for preparing a filling; a filling operation station, in communication with the station for preparing the strip of pasta sheet and with the station for preparing the filling, in which portions of filling are wrapped in corresponding portions of the strip of pasta sheet to form individual pieces of filled pasta; the station for preparing the filling comprises a feeder device for feeding the filling to the filling operation station; the feeder device comprises: a feed duct comprising an inlet and an outlet for the filling; a piston operating in the feed duct feeding the filling from the inlet to the outlet; an ultrasound generator provided with an ultrasound emitter applied to the feed duct for transmitting at least one vibration to the feed duct.
Abstract:
A method and relative apparatus for testing the tightness of a container closed by a membrane are described. The method includes steps of: submitting the container to a deforming action to increase the pressure inside the container; submitting the membrane to an abutting action to counteract the deformation of the membrane caused by the deforming action; maintaining the action of abutting the membrane at the same time as the action of deforming the container for a set period of time; interrupting the action of abutting the membrane at the end of the period of time; detecting at least one parameter related to a membrane profile when the abutting action has ceased; and comparing the at least one parameter related to the membrane profile with a predefined threshold to verify whether the tightness of the container is to be classified as defective.