Packaging system with improved flow of articles

A packaging system for causing articles to fall downward along a predetermined falling route and filling said articles into a tubular film thereby producing packaged products, comprising:

• sealing means operating on said falling route after an interval from a time when the articles fall down, for sealing an end of said film in a direction orthogonal to a transfer direction of said film,
• a weight checker for weighing the packaged product;
• and
• a controller comprising:
• determination means for determining whether a state of a flow of the articles on said falling route is normal or abnormal, based on a weight of the packaged product measured by the weight checker;
• and
• change means for changing the interval according to the state of the flow of the articles determined by said determination means, wherein
• a system feedback controls the change means based on the state of the flow determined by said determination means.