Matters needing attention during quality inspection of corrugated boxes

When inspecting a batch of cartons, the visual inspection method can be used initially, but it must be carried out in a certain order.

1. Check whether the carton is bound or damaged by collision, rain or moisture;

2. Take a carton from the middle of the sample bundle and flatten it, check the printing quality, die-cut shape, crease condition and cardboard appearance;

3. Open the carton and check the slotted cut, joint size, cover sheet and wing quality;

4. Cut 80 × 30 mm cardboard to check the material and corrugated shape;

5. Check the overlapping quality of the top and bottom and the size of the carton;

6. Quality of seam bonding (stapling, tape).

The unqualified carton should be recorded, in order to confirm its non-standard, it can be further tested in the laboratory.

For example, a rough inspection shows that the basis weight (g / m2) of the cardboard is insufficient, and the thickness of corrugated paper or boxboard paper can be measured because there is a certain relationship between the paper thickness and the basis weight. For precision inspection, a precision balance is required for testing under constant temperature and humidity conditions. If the physical and chemical properties of the cardboard, such as burst strength and compressive strength, are also specified in the technical specifications, then the test must be carried out in accordance with the prescribed methods. These experiments can be carried out in the user's laboratory. If the user does not have the test means, they can also entrust a special test institution to conduct the test.

Product Description

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