①Basic conditions of the carton factory: determine the length, width and height of the carton
Generally, the thickness of the three-layer carton is about 3.5mm, and the thickness of the five-layer carton is about 7mm, so you must first measure the length, width and height of your actual items. Then add the thickness of the carton (try to add 0.5mm to the height of the carton). Carton size design: generally designed to save more materials when the width data is relatively small. Therefore, according to your own goods, you must tell the carton factory whether the size you are talking about is the outer size or the inner size.
② Select the material of the carton
According to the weight of your own goods and your own cost, choose the material of the carton reasonably. Our ordinary cartons are made of corrugated cardboard, corrugated cardboard release paper, corrugated paper, core paper and inner paper; the heavier the weight per square meter, the better the quality. Paper weights are 120g, 140g, 170g, 200g and 250g.
③ Choice of carton thickness
Cartons are divided into three layers, five layers, seven layers and nine layers. The thickness of the third floor is about 0.3mm, the thickness of the fifth floor is about 0.7mm, and the thickness of the seventh floor is about 0.9mm. The third floor is also called single pit, and the fifth floor is also called double pit. Reinforced and hardened cartons are the same thickness, just the hardness.
The carrying capacity of the carton mainly depends on the transverse ring compressive strength of each layer of base paper, but the more layers, the better the carrying capacity.
④ Printing problem
Generally speaking, the larger the printing surface area, the higher the cost. Of course, it depends on the color. Once a carton is printed, it cannot be modified. Therefore, we have to confirm the printing content with the carton manufacturer many times. Some small mistakes can be covered with stickers of the same color as the carton or warm water stickers, but it is not beautiful enough. Provide accurate printing materials as much as possible, and supervise the carton manufacturers to print in strict accordance with the requirements.
