| 摘要 |
A bag filling and sealing mechanism having vertical tubes over which elongated sleeve-like bags are positioned to receive a stack of similar patty-type products, a composite plunger unit movable into the upper end of a bag containing a guantity of said products, vacuum mechanism operable to apply vacuum to the interior of said bag while said plunger unit is withdrawn from the open upper end of said bag, a plunger coaxial with said plunger unit positioned with the lower end against the top of the stack of products in said bag while vacuum is still applied to contract the upper end of the bag around said plunger, transfer mechanism to move the evacuated bag to clipping mechanism to apply clips to the contracted end of the bag after said plunger has been fully withdrawn, heat-shrinking mechanism extending around said clipped bag, while supported at the upper end, and movable vertically between opposite ends of said bag to shrink it tightly around the contents thereof, and additional transfer mechanism operable to move the evacuated bags to cartons automatically to form an orderly pattern of the same in said cartons.
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