Do You Know The Advantages of Tungsten Carbide Corrugating roll ?

Improvement of corrugated cardboard quality: optimization of wear-resistant tungsten carbide corrugating roll and flute design

The corrugating roll of single facer is the core influencing factor on the forming quality of corrugated cardboard and the amount of original paper used.

Problems with Traditional Corrugating Rolls

The traditional electroplating of hard chromium on corrugating rolls has poor wear resistance, resulting in an increase in the top area of the corrugated teeth after wear, leading to an increase in the amount of adhesive applied during corrugated bonding, which in turn causes problems such as softening and curling of the cardboard. Therefore, the wear of corrugating roll has become the main problem affecting the quality of cardboard and forcing the replacement of corrugating roll.

Advantages of Tungsten Carbide Corrugating Roll

However, corrugating rolls made of wear-resistant tungsten carbide materials can significantly improve their service life, reduce wear and deformation on the top and sides of the teeth, effectively avoid the phenomenon of "concave", ensure consistency in the height and thickness of the teeth, thereby preventing quality failures such as debonding and chamfering, and greatly reducing the number of defective and unqualified products. Despite the high price of tungsten carbide rollers, their long lifespan and high-quality product characteristics provide ample returns on investment.

Optimization of Cardboard Corrugated Flute Design

The characteristics of corrugated cardboard, such as the height of the corrugations, the number of corrugations per unit length, and the waveform of the corrugations, all have a significant impact on the strength of the cardboard and the utilization rate of the base paper.

The impact of corrugated design on strength

In the fierce competition of the packaging and printing industry, how to reduce material costs while ensuring quality has become an important issue facing the industry. By comparing and analyzing the experimental production data of corrugated paper and tea board paper paired in the same group before and after technological transformation on single facer, we found that although the corrugated paper produced by the corrugating roll with a high paper utilization rate has lower edge compression strength, this does not mean that its overall strength is weaker. In fact, the corrugation design of the corrugating roll has a decisive impact on the strength of the cardboard. For example, the modified single facer corrugating roll is positioned with 48 teeth within a length of 30cm, with a rib height of 2.9mm. Although the number of teeth has increased by 4, the rib height is slightly lower than the standard range. This design allows the original 2m long corrugated paper to only form 1.385m long cardboard, while the machine after changing rollers can form 1.405m long cardboard with slightly higher strength than before the transformation.