Scientific design of finished size of corrugated boxes

The most important use of corrugated boxes is packaged goods, but if there is a size deviation in the carton, it is equivalent to making a fatal mistake. Many people in the industry will feel that the carton size management control is the most basic and the simplest, but as a corrugated box user often does not think so, the size problem directly determines the value of the carton. The right size customer will accept the use.
Improper size, no matter how good the other projects are, it will not help. However, it is a very systematic task to truly manage and control the size of cartons. Therefore, it is the most economical and scientific management to deal with simple things once and for all.
Designing the size of a corrugated carton requires first the design of the inner dimensions. Because the inner size is relatively easy to determine, it is determined by the actual measurement of the product or the outer dimensions calculated by the physical combination. The discharge of contents should be as space-saving as possible, and reasonable consideration should be given to the factors of support.
From the mechanics point of view, if the contents share a part of the supporting force, the requirements of the carton compressive index can be appropriately reduced. Therefore, it means cost reduction and profit acquisition. If the contents are paper trays, consider the direction of the cassette's strands, as the longitudinal filaments are better than the transverse filaments.
In the forming process of the corrugated box, the corrugated board is pressed to make the corrugated board to be well bent, and at the same time, the pressure line breaks the structure of the corrugated board so that the inner paper shrinks and the front paper extends. The amount of stretching is directly related to the thickness of the board and the way the lines are pressed. The thicker the cardboard, the larger the stretch value, the wider the pressure line, the greater the stretch value. However, no matter whether it is a two-line, three-line or five-wire type corrugated box, the protruding part of the bottom line of the pressure roller will squeeze the compression part of the corrugated board into the center position of the corrugated board. Therefore, the inner size of the corrugated box is slightly shorter than the distance between the line and the pressure line when the corrugated box is unfolded. In this case, the shortened portion is added as a correction value, which is closely related to the thickness of the corrugated cardboard.
The most common carton boxes are usually butt-sealed in order to protect the contents. This requires that the flap size of the carton must be calculated accurately, and there should be no gap after the docking, nor can the flap stack be overlapped. In principle, the theoretical width of the swing cover width should be one-half of the box width. However, because the inner and outer flaps are on the same pressure line, the inner flap is folded to support the outer flap, and the outer flap must have a certain gap at the butt joint. Therefore, it is very important to calculate the correction value of the dimensions of the outer flap width. This correction value is generally half of the thickness of the pressed cardboard, but the different pressure line equipment caused by the cardboard surface, the paper is not the same as the expansion and contraction, so it is best to be determined through actual measurements.
In simple terms, the structural design of corrugated boxes depends on the manufacturing equipment used and the different production processes used, the type of corrugated board used, and the type and nature of the products contained. After designing the corrugated box structure and size-related contents, it is possible to manufacture corrugated cartons that protect the goods and beautify the products.