how to operate flex printing machine​ | Keshenglong&Shinko Guide

How to Operate Flex Printing Machine: A Guide for Flexo Printer Professionals

Efficiently operating a flex printing machine is critical for achieving High Quality print quality while maximizing productivity. This article guides industry professionals through essential steps on how to operate a flex printing machine, addressing common pain points including setup, calibration, and troubleshooting.

Core Principles of Flex Printing Machine Operation

H3.1 Pre-Operational Checks

- Inspect machine components for wear or damage (FLEXO Magazine, 2023)

- Verify the substrate compatibility and condition

- Ensure ink supply levels and correct ink viscosity

- Calibrate anilox rollers for optimal ink transfer

H3.2 Setup and Calibration

- Secure proper plate mounting using high-quality mounting tapes (FTA, 2022)

- Align cylinders to maintain register accuracy and avoid print defects

- Set tension controls for paper or film to prevent wrinkling or slippage

- Adjust drying systems according to job requirements and ink formulations

H3.3 Machine Operation Steps

- Power on the flex printing machine following manufacturer’s SOPs

- Run a trial print and inspect print quality under standardized lighting

- Monitor print variables such as registration, density, and dot gain

- Make real-time adjustments for web guiding and print pressure as needed

H3.4 Maintenance and Troubleshooting

- Implement daily cleaning routines for ink fountains, anilox rollers, and print decks

- Lubricate moving parts as per OEM recommendations (TLMI Technical Report, 2021)

- Document and address recurring issues to anticipate maintenance cycles

- Troubleshoot common issues (e.g., streaks, smudges, color shifts) by examining press settings and substrate condition

H3.5 Quality Assurance and Safety

- Regularly sample and test printed output against job specs per ISO 12647-6

- Employ digital quality control systems for on-press analysis

- Train operators on emergency shutdown procedures and personal protective equipment (PPE) requirements

Essential Tips for Improved Efficiency

- Use job-specific inks and substrates to minimize setup times

- Standardize job recipes for repeatability and fast changeovers

- Keep detailed logbooks for continuous process improvement

References

- (https://www.flexography.org)

- (https://www.flexography.org/flexo-magazine)

- (https://www.tlmi.com)