The size of the carton is closely related to product protection, procurement cost, freight, etc. How to make the correct carton size becomes the key. For large quantities of products, we can make sample boxes to test our predetermined size, but when the batch size is small and the number of cartons required is only dozens, it would be a bit wasteful to ask for sample boxes. Therefore, it is particularly important to understand the basics of making carton sizes.
First, let's understand the various types of paper.
Material description: The raw material of the carton is cardboard, and the raw material of the cardboard is base paper. Base paper is divided into K paper, A paper, B paper and C paper. There are 3 papers of 5 types. The best is K paper
The worst is 3. K paper is also the thickest, 3 paper is the thinnest, K/A/B/C paper can be used as top paper and backing paper, 3 paper is mainly used as pit paper or backing paper. The material of the face paper is usually better than or equal to the inner paper. For example, if the face paper is A paper, the usual combination is A=A, A=B, A=C, etc. It is impossible to be A=K. There is also a kind of paper called W paper, also known as white paper, whose thickness is close to that of A paper, and is usually used as facial paper. Cartons are also called corrugated boxes, and their main raw material is cardboard. The outermost layer of paper is called facial paper, the innermost layer of paper is called inner layer paper, and the uneven paper in the middle is called pitted paper. For example, A=B, A is the face paper, B is the inner paper.
According to the thickness of the pit, there are four types of cartons: 1. Small pit boxes, also known as E pit boxes, are written as A9A, A9B, B9B, etc.
This is the thinnest carton, usually a carton. There are 3 layers of paper, the total thickness is 1.5-2.0MM. Two single-pit cartons, written as K3K, K3A, A3A, A3B, B3B, etc. Usually used, but usually between 0.3-0.45 cm, usually no more than 0.5 cm three-layer paper. Three double-pit cartons are the most commonly used cartons, written as K=K, K=a, a=a, B=B, a=C, B=B
