Corrugated boxes are widely used in the outer packaging of goods due to their characteristics and environmental advantages, and play an important role in the protection of goods in transportation, storage and sales. During use, cartons are required to achieve firmness and durability.
At present, the fierce market competition makes the carton manufacturers to continuously improve the production process and management to obtain great profits, which makes carton users encounter more or less quality problems in the process of using cartons, such as The collapse and rupture of cartons after stacking caused many unnecessary losses.
In order to avoid such a situation and produce qualified carton products, corrugated cartons must be tested so that the production process of corrugated cartons can be effectively controlled. Therefore, it is of great significance to correctly understand and understand the testing items and testing methods of corrugated boxes.
Summary of appearance quality of corrugated boxes
Qualified corrugated boxes require clear printed patterns and handwriting, no broken lines or missing patterns, the same color, bright and bright, and small printing position errors. It is also required that the box joints be standardized, the edges are neat, and the corners are not overlapped.
Moisture content
The so-called moisture content refers to the moisture content in corrugated base paper or cardboard, expressed as a percentage, the moisture content has a great influence on the strength of the carton box, and it is one of the three major defect inspection items of the carton.
Corrugated base paper has the properties of pressure resistance, tension resistance, puncture resistance and folding resistance. If the moisture content is too high, the paper will appear soft, the stiffness will be poor, and the quality of corrugation and adhesion will be poor. If the moisture content is too low, the paper quality will be too brittle, it will be easy to break when corrugated, and the folding resistance will be poor.
Corrugated boxes cardboard thickness
The thickness of corrugated cardboard refers to the vertical distance between the upper and lower sides of the corrugated cardboard under pressure.
