| 摘要 |
<p>A device for preparing box-lunches in which fabrication, cleaning, and sterilization of lunch boxes (1), filling of foods in and sealing of said boxes, and filling of inert gas into said boxes are performed in continuous operation so that mass production of long preservable box-lunches in a short period of time may be possible. Further, said box-lunches are passed through the chamber filled with inert gas while carried on a conveyor and, thus, prevented from insufficient filling of inert gas. By providing a lunch box (1) with a check valve (12) and filling said box with gas through a gas filling pipe (14) inserted into said valve (12), filling of gas into individual lunch boxes is made possible. Filling of gas into individual boxes may also be achieved by providing a self-sealing member (69) to film covering each lunch box (1) and inserting a gas filling needle (71) through said sealing member (69). With ethylene adsorbing means (27, 22, 28, 50) provided in a lunch box (1), foods particularly requiring freshness such as vegetables, fruits, and so on can be prevented from degrading. Further, perishable foods such as vegetables and fruits, contained in a bag (40) provided with ethylene gas adsorbing means (50), can be dispensed into a lunch box (1) with a freshness at the time of harvesting still kept. <IMAGE></p> |
