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Generally, a three-layer cardboard box has a paper thickness of around 3.5mm, while a five layer cardboard box has a thickness of around 7mm. Therefore, you need to first measure the length, width, and height of your actual item. Then add the thickness of the cardboard box (try to add 0.5mm more at the height of the cardboard box). It is the outer box size of the cardboard box. Generally, cardboard box factories default to the outer box size. Outer box size design: Generally, a smaller width data is considered the most material efficient design. So, based on the condition of your goods, you must tell the cardboard box factory whether the size you mentioned is the outer box size or the inner box size.

2. Choose the material of the cardboard box
According to the weight of your goods and your own cost situation, choose the material of the cardboard box reasonably. The cardboard box is made of cardboard, so it is necessary to have an understanding of the concept of cardboard. Our ordinary cardboard boxes are made of corrugated cardboard, including corrugated paper, corrugated paper, core paper, and liner paper; The quality of materials is generally related to the weight per square meter. The heavier the weight per square meter, the better the quality. The weight of paper is divided into 120 grams, 140 grams, 170 grams, 200 grams, and 250 grams. Generally, the paper of cardboard boxes has a smooth appearance, and the texture and hardness can be roughly distinguished by the paper, and the overall market paper quality will not differ too much.
3. Selection of cardboard box thickness
The cardboard boxes are classified according to their corrugated shape: the thickness of the cardboard boxes is generally three layers, five layers, seven layers, and nine layers. The approximate thickness of the third layer is about 0.3mm, the thickness of the fifth layer is about 0.7mm, and the thickness of the seventh layer is about 0.9mm. The third floor is also called a single pit, and the fifth floor is also called a double pit. The thickness of reinforced cardboard boxes is the same, only in terms of hardness.
The load-bearing capacity of a cardboard box mainly depends on the transverse ring compression strength of each layer of base paper, and it is not necessarily better to have more layers for better load-bearing performance.
4. Printing issues
In general, the larger the surface area of printing, the higher the cost. Of course, it also depends on the number of colors, and once the cardboard box is printed, it cannot be modified. So it is necessary to confirm the printed content multiple times with the cardboard box manufacturer. Some small errors can be covered with stickers or warm water stickers that are similar in color to the outside of the cardboard box, but not aesthetically pleasing. Provide the most accurate printing information as much as possible and supervise the cardboard box manufacturer to strictly follow the printing requirements.
5. Sample box
If the intention to cooperate with the cardboard box manufacturer is confirmed and a consensus is reached on the quotation paper and cooperation method, the cardboard box factory can be requested to provide sample boxes. The cardboard box samples are generally not printed, but mainly determined by the paper, size, and process quality.
6. The issue of minimum order quantity
Every cardboard box factory has a minimum order quantity issue, which is 30 square meters. The minimum order quantity varies among different cardboard box factories. It is generally recommended to make more cardboard boxes at once, as the fewer orders, the higher the price.
7. Special Reminder
Cardboard hardness: As long as it is a continuous rainy or humid day, even the originally hard cardboard box will become soft (the same applies to newly customized ones).
8. Color of cardboard box
The color of all cardboard boxes cannot be 100% the same as the last time. If the color requirements are particularly high, it is necessary to communicate with the cardboard box manufacturer.

The article was transferred from the Packaging and Printing Industry Portal - https://www.cnzhixiang.com/