| 摘要 |
THIS INVENTION RELATES TO THE PRIOR INVENTION AND PROVIDES A PACKING BOX INCORPORATING A DUAL WALL STRUCTURE WITH REINFORCING INNER WALLS WHICH ARE ENGAGED WITH CLEARANCES OF THE DUAL SIDEWALLS, AND WHICH GREATLY INCREASES THE STRENGTH TO PILE UP THE PACKING BOXES AND DURABILITY AGAINTS THE EXTERNAL IMPACT FROM BOTH SIDES, AND HAVE MULTIPURPOSE FEATURE FOR STORING VARIOUS SHAPED ITEMS. TO ACHIEVE THE AFOREMENTIONED OBJECTIVES, REINFORCING INNER WALLS OF CORRUGATED PAPER WHICH IS CREATED SEPARATELY FROM THE MAIN PACKING BOX ARE ENGAGED FREELY WITH CLEARANCES BETWEEN SIDEWALLS AND INNER WALLS OF THE PACKING BOX INCORPORATING A DUAL WALL STRUCTURE. IT IS PREFERABLE TO MAKE THE HEIGHT AND LENGTH OF THE REINFORCING INNER WALLS NEARLY THE SAME AS THE INNER HEIGHT AND INNER WIDTH OF THE PACKING BOX, TO PUT TOGETHER OR TO FOLD CROSS-SECTIONAL MEMBER INTO AN UPWARD OR DOWNWARD CHANNEL-SHAPE, TO DISPERSE THE UPPER LOAD OR TO REDUCE THE SIDE PRESSURE BY FOLDING THE REINFORCING INNER WALLS AND BOTH EDGES OUTWARDLY. ALSO, BOTH EDGES OF THE REINFORCING INNER WALL ARE FIRMLY ENGAGED WITH THE SLIT PROVIDED ON THE INNER WALL.
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