The most common problems and solutions of three layer corrugated board production line

Three layers of corrugated board production line in production will often appear some phenomena which affect the back of the production and the quality of the products, merchants demand for corrugated paper is very high in life, so you need to know about problems in the production of corrugated board and the solution, let ChuangLian packing small make up to you detailed introduction:

Paperboard false adhesion problem: this phenomenon refers to when the paperboard leaves the machine, between the paper surface and the paper will instantly break away from a situation.

The main reasons are as follows:

(1) adhesive with insufficient viscosity is used, or the adhesive has expired;

(2) The machine speed on the production line is too fast;

(3) the pressure roller of corrugated machine has the situation of uneven pressure or wear;

(4) the gap between the cots of the composite gluing machine is too large;

(5) the moisture content of corrugated paper itself is too high.

The solution

(1) improve the bonding quality of the adhesive, relevant data show that the viscosity of the adhesive is generally in winter 60S-90s, summer viscosity in 90S-120s, the viscosity of seven-layer corrugated box than three-layer box is about 305 slower;

(2) the steam pressure is maintained between 1.0Mpa and 1.2Mpa, the temperature of the roll and the temperature of the flat drying cylinder are about 160℃;

(3) when the production of domestic corrugated roll reaches 3-3.5 million meters long, it must be replaced.

Rub board phenomenon problem: refers to the corrugated board made after no surface of a layer of paper diffraction inside the radian of the corrugated peak produced concave phenomenon, the surface shape looks similar to the rubbing board at home, so it is called the phenomenon of rubbing board.

The root cause of the appearance of corrugated board washboard is due to improper adhesive, which is especially harmful to low weight box board.

The solution to the washboard phenomenon are: adjust the amount of surface paper and a higher amount of cardboard instead of paper, this is to eliminate and reduce the washboard phenomenon 朂 direct effective method (but will increase the cost); High quality adhesive can reduce the amount of glue on the corrugated peak; Control the heating winding surface of the surface paper on the preheater, as too dry cardboard will lead to more glue intake, resulting in washboard phenomenon.