How to distinguish the unqualified carton?
shenzhen cardboard-box factory manufacture of carton is currently the most widely used printing & packaging products. The cartons according to different materials, can be divided into corrugated carton, single layer carton, etc. , with various specifications and models. So do you know how to tell when the choose and buy should not qualified carton?
in fact, we could not tell the qualified products can be divided into several, such as: bonded incomplete joint, joint tape is incomplete or joint pin's abundant or not; The edge of the slot cut into the carton side; Cover plates can't docking, the gap is greater than 3 mm; Cardboard moisture content is higher than 20% or below 5%; Carton of indentation present bending; Carton printing or graphic vague; Carton no anti-sliding measures according to the rules.
the cartons look poor, but does not affect its use function, main show is: slot or carton die-cutting coarse; Board appearance with washboard bumpy, affect the printing & packaging graphic quality; Box surface pollution miscellaneous points; The shallow scratches or marks rubbed off.
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