| 摘要 |
<p>A method of forming a form stable, preferably product contour tight package in a roller operated packaging machine.</p><p>A thermoformable web (14) is pre-heated to a suitable forming temperature and the web is thereafter supplied to a mould tray (20). The tray is provided with vacuum passages and/or other arrangements for forced forming to the contour of the tray.</p><p>A sealing tool (22) surrounds, completely or partly, the periphery of the tray and is used for sealing of the second web to the first one.</p><p>The heat of the sealing tool is superposed, primarily by heat radiation, onto the cooling, preferably such that a boarder region (26) heat/cold is created in the marginal portion of the mould tray.</p> |
