Cutting System of CHM A4 Copy Paper Production Line

In the competitive paper converting industry, efficiency and precision are key factors for success. The CHM A4 copy paper production line stands out as one of the most advanced solutions in the market. With a running speed of up to 300 meters per minute and more than 750 cutting cycles per minute, the CHM A4 machine represents the only high-speed fully automatic copy paper production line developed in China.

This article will explain in detail why the cutting system of the CHM sheeter can achieve such outstanding high-speed performance.

Overview of the CHM A4 Cutting System

The cutting system of the CHM A4 copy paper production line consists of two main sections:

· Cross Cutting Section (Length Cutting): Determines the paper length at 297 mm 

· Longitudinal Slitting Section (Width Cutting): Divides the paper into 210 mm width 

These two systems work seamlessly together to ensure precise A4 paper sizing at high speed.

Advanced Longitudinal Slitting Technology

The longitudinal slitting section of the CHM sheeter adopts a pneumatic rotary knife system, which ensures high precision and clean cutting quality.

Key features include:

· The bottom knives are made of high-precision SKD-11 steel, mounted on the knife shaft and separated by spacers at an exact distance of 210 mm 

· The top knives are pneumatically controlled circular blades

· The pneumatic system precisely controls:

o Contact pressure between top and bottom knives

o Penetration depth of the top knife

This stable and intelligent structure ensures that the paper cutting edge is smooth and burr-free, even at high speeds.

High-Speed Cross Cutting with Dual Helical Knife Design

For cross cutting, the CHM A4 machine uses a dual helical knife system, which is a key factor behind its ultra-high speed performance.

· Two sets of tungsten steel helical blades are installed on the upper and lower rollers

· Both rollers are driven by servo motors, ensuring synchronized high-speed rotation

· Each cut is precisely controlled to achieve the exact 297 mm length 

This advanced design guarantees accurate, stable, and continuous cutting even under high-speed operation conditions.

Why CHM Sheeter Leads the Industry

Compared with conventional machines, the CHM A4 copy paper production line offers:

· Ultra-high speed up to 300 m/min 

· More than 750 cuts per minute 

· Fully automatic operation

· Burr-free, high-quality cutting edges

· Stable and reliable performance

These advantages make the CHM A4 machine an ideal choice for paper mills and converters aiming for high efficiency and premium product quality.

Conclusion

The exceptional performance of the CHM sheeter is not accidental—it is the result of advanced engineering, precision components, and optimized system design. From the pneumatic slitting system to the dual helical cross cutting technology, every detail contributes to its high-speed, high-precision operation.

If you are looking for a reliable and efficient CHM A4 copy paper production line, this cutting system is one of the key reasons why CHM stands at the forefront of the industry.