Unqualified corrugated boxes

One, Class A failed. The carton cannot fulfill the function of protecting or identifying the contents.

1. Joints fall off;

2. The size exceeds the allowable error range;

3. The quality is lower than the specified minimum value;

4. Indentation lines are broken or the paper surface is broken;

5. The surface is torn, pierced, holes or cover flaps are regularly produced with excess cardboard pieces stuck;

6. There are errors in printing, incomplete printing, or color patterns;

7. Pollution caused by external substances.

Second, class B failed. Cartons are incomplete or have problems.

1. Incomplete adhesion of the seams, incomplete tape joints, or insufficient joint tack;

2. Slot into the edge of the side of the carton;

3. Cover plate can not butt, the gap is greater than 3mm;

4. Cardboard moisture content is higher than 20% or lower than 5%;

5. Carton bending at non-indentation;

6. Incomplete printing or blurred graphics

7. The carton did not take anti-skid measures as required.

Third, the C class failed. The appearance of the carton is not good, but its function is not affected.

1. Slotting or carton die cutting;

2. The cardboard surface has a splay-like unevenness that affects the quality of printed graphics;

3. The box surface has pollution spots;

4. Shallow scratches or marks are wiped off.

The above unqualified quality levels are: Class A 1.0; Class B 4.0; Class C 6.5.

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