To provide a packing box which can be surely opened over two wall surfaces without impairing the appearance or rigidity.
The packing box is made from a corrugated board including a center core 4 disposed between a surface liner and a back liner 3. A first wall (side wall) 11A is provided with a first rupture means having a first rupture line (first piece zipper 26) including cut portions 32 and non-cut portions 33 which are alternately provided with an end intersecting a bending line 14 thereof being the non-cut portion 33, and a second wall (top wall) 13 is provided with a second rupture means having a second rupture line (second piece zipper 27) including cut portions 32 and non-cut portions 33 which are alternately provided so as to continue the first rupture line 26, and allowing the corrugated board 1 constituting the second wall 13 to be ruptured successively after the corrugated board constituting the first wall 11A is ruptured along the first rupture means. The bending line 14 includes a half-cut line 35 provided at an end intersecting the first rupture line 26 thereof by cutting the back liner 3.
ISHIKAWA ATSUO
| JP2000185733A | 2000-07-04 | |||
| JP2004083038A | 2004-03-18 | |||
| JP2003327243A | 2003-11-19 | |||
| JP3137593U | 2007-11-29 |
Takuji Yamada
Yoshiyuki Maebori
Next Patent: HORIZONTAL BAG-MAKING/FILLING MACHINE