How to judge the functional quality of corrugated boxes?
How to judge the functional quality of corrugated boxes?
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1. Class A failed: The carton cannot meet the function of protecting or marking the contents.
(1) The seams are disengaged.
(2) The size is outside the allowable error range.
(3) The mass is lower than the specified minimum.
(4) The indentation line is broken or the paper surface is cut.
(5) The surface is torn, punctured, with holes or cover flaps irregular and sticky with extra cardboard pieces.
(6) There are errors in printing, incomplete printing, or errors in color patterns.
(7) Pollution caused by foreign substances.
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2. Category B failed: The carton is incomplete or has problems.
(1) The joints are not fully bonded, the joints of the tape are not complete, or the joints are not fully nailed.
(2) Slot into the edge of the carton.
(3) The cover sheet cannot be docked, and its gap is greater than 3mm.
(4) The moisture content of paperboard is higher than 20% or lower than 5%.
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