Bending deformation is mainly caused by the rapid penetration of the glue into the corrugated board and face paper after the surface sizing of the corrugated board, and then there are two directions: one is bending towards the cardboard, the other is bending towards the face paper.

The bending direction of the paperboard mainly depends on the density of the paper, because the density of the paper determines the bending direction of the paperboard. Generally speaking, the bending direction of the corrugated paperboard is towards the face paper, Because the density of corrugated paper is relatively low, and then a lot of glue permeates into the direction of corrugated paper, and then the corrugated paper begins to absorb water and expand. Because the paper density is low and the deformation is small, the tissue paper bends to the direction of tissue paper. At the same time, many packaging tissue paper surfaces are coated, and the tissue paper will not rise. Therefore, the corrugated paper cups we picked up are all due to the corrugated paper cups after being bonded by the paper mounting machine Expansion, the tissue does not expand, resulting in bending towards the tissue.

There is also a phenomenon is to corrugated direction bending, this phenomenon generally occurs in the northwest and northeast region, due to the dry environment, the same principle, face paper will not rise, but after bonding, for a long time, due to the influence of environmental humidity, the moisture of the whole corrugated paperboard is decreasing, the moisture of the whole corrugated paperboard shrinks on the corrugated surface, and the face paper is still due to the high density It is not easy to deform, so the face paper is big corrugated paper, and the corrugated board is bent in the direction of corrugated.

This is equivalent to the metal bimetallic sheet, our corrugated board is humidity change cardboard bending direction, bimetallic sheet is temperature change corrugated cup bending direction.

The paper mounting machine paper board bending deformation processing method:

After knowing the bending deformation method of paper mounting machine, we will explore the solution of paperboard bending of paper mounting machine.

After the paperboard is pressed out by the paper mounting machine, the glue is still further penetrating into the paper, which is also the curing process of corrugated paperboard. Therefore, the common method is that after the paper mounting machine is pressed out, we immediately stack the corrugated paperboard one by one, and then use the gravity of the corrugated paperboard to flatten itself. This is the simplest way for our printing and packaging industry at present

Yutian Shengtian printing and Packaging Machinery Co., Ltd. specializes in the research and development of tipping paper machine, which is to stack the corrugated board directly from the mounting machine, and also to flatten the corrugated board directly by using the principle of gravity. At present, many domestic manufacturers are using Shengtian mechanical tipping paper machine, and the effect is very good.

Detailed Inquiry: Mr. Ye liming-13903151509 / Mr. Ye lishu-13703343719