What factors will affect the flatness of corrugated board

General corrugated board flatness appearance is generally transverse arch, longitudinal arch and arbitrary arch these three.

Transverse arch is generated in the direction of the corrugated arched, refers to the cardboard along the longitudinal arch production speed direction first arch, refers to any arch along any direction rolling arch, arch on the surface of the paper surface is called a positive arch, arch on the surface of the paper is called negative in the arch, each have ups and downs in the surface of paper surface are called positive and negative arch.

So what are the main reasons for affecting the flatness of cardboard

Dongguan carton manufacturers introduce to you:

1. Face paper types, according to cardboard paper imports, domestic kraft paper, imitation kraft paper, corrugated paper, tea board paper, high strength corrugated paper and so on, and divided into A, B, C, D, E, general face paper is better than paper.

2. The parameters of the paper in the face are different, and the amount of paper in the face of different materials is different

3. Different moisture content of the same batch of paper

4, due to improper operation or equipment limitations caused by poor preheating drying effect

5. Humidity of corrugated paper

6. Improper storage space, high humidity and poor ventilation caused by the environment

7, single-sided single-sided corrugated machine, gluing machine is improper, uneven and cause uneven contraction of corrugated board

The above is a small series of points, I hope to help you.