| 摘要 |
PURPOSE:To produce an extremely sanitary box lunch having excellent preservability in high efficiency, by filling cooked rice and subsidiary foods in a lunch box, transferring the box on a specific conveyor to scrape off the projected part of the rice, etc., removing air and sealing the product in an inert gas atmosphere. CONSTITUTION:Cooked rice 7 and subsidiary foods 8 such as croquette, broiled fish, etc., are filled in the respective parts of a lunch box 1 composed f the rice-filling part 2 partitioned by the rice-filling part wall 4 and the subsidiary food filling part 3 partitioned by the subsidiary food filling part wall 5. The filled lunch box 1 is placed in the corresponding hollow 9 of a conveyor 10 and transferred. The excess rice projected from the box is scraped off with a scraper plate 12 in the zone 11 to flatten the surface of the cooked rice, and the surface of the subsidiary food is flattened if necessary by pressing, etc. The lunch box 1 is introduced into the preliminary chamber 13 evacuated with a vacuum pump 14 and supplied with an inert gas through a pipe 15 furnished with a valve and then into a sealing chamber 17 filled with inert gas. The unfilled part of the lunch box is filled with the inert gas, and the box is sealed with a film 19 using a vertically movable sealing apparatus 18. |
