| 摘要 |
<p>In the sealing closure of plastic containers, optionally with prefabricated plastic covers or sectionally with a pre-stretched plastic film which can be withdrawn from a stock roll or a heat sealably coated aluminium foil, in an air atmosphere or with the supply of a protective gas (a) a receiver, e.g. for four plastic containers, placed on an optionally exchangeable working platform is moved positively along double guide rails arranged in a square, and are displaced in three different directions manually and a straight direction mechanically in such a way that they pass in series from the front filling insertion or removal station into the rear sealing station, in which they are aligned in a cyclic path and either provided with the pre-fabricated plastic cover or covered with the pre-stretched plastic film or aluminium foil, edge-welded in the protective zone of a vacuum bell with gasification equipment by means of a vertically pressed-on heat-sealing electrode and thereafter separated from each other by a knife. Permits the sterile packaging of foodstuffs with simultaneous maximum control by the operator.</p> |
