| 摘要 |
<p>In the closing of carton liners in freezing frames, e.g. for the freezing down of fish, the lid skirt parts of the liner lid are inserted down inbetween the side fields of the liner and the inner side of the freezing frame, so that they can not become frozen fast in the fish mass. It is already known that use can be made of liner items provided with signal markings, which after the forming of the frozen mass will outwardly clearly indicate whether the closing is correct. The invention is based on the consideration that it will be possible to utilise a 'system' for detecting incorrectly closed liners after these have been closed, but still before they are transported for freezing, so that there is time for possible defects to be rectified. The system will comprise detection equipment and adapted liners and modified freezing frames, all depending on the kind of detection desired.</p> |
