| 摘要 |
A quadrangular machine for forming boxes (1) from blanks (2) having a base and a plurality of segments connected thereto, comprises a die (3) operating on said base; folding elements (4) for folding and setting up said segments to define edges (5) of the box (1); feeders (6) for positioning pieces (7) of heat seal stay tapes to face the edges (5); sealing heads (8) with heatable pressers (9) movable towards and away from the box (1) perpendicularly thereto to press said pieces (7) against the respective edges (5), and with blades (10) which are movable as one with the corresponding presser (9) to cut the stay tapes; each presser (9) comprising a portion (9a) which is movable independently of the blade (10) towards and away from the box (1) to press a portion of the stay tape against the respective edge (5) whilst the blade (10) is at a position of non-interference relative to the stay tape. |
