
Corrugated Board Delamination: Causes, Prevention, and Solutions
Technical guide to understanding and solving corrugated board delamination problems, covering adhesive issues, machine settings, and paper quality factors.
Technical Guides

Starting up a new corrugating line is a complex process that requires careful planning and execution. This guide walks through the essential steps from installation completion to achieving stable, quality production.
Phase 1: Pre-Startup Preparation
• Confirm all utilities connected and tested (power, compressed air, steam/heat source)
• Verify ventilation and dust collection systems operational
• Check floor levelness and machine foundations
• Confirm fire suppression systems inspected and approved
• Establish storage areas for paper rolls and finished goods
• Equipment manuals and specifications
• Electrical schematics and control system documentation
• Spare parts inventory list
• Safety procedures and emergency protocols
• Quality specifications for target products
• Order initial paper stock (various grades for testing)
• Procure adhesive materials
• Stock essential spare parts
• Prepare testing equipment (moisture meter, caliper, etc.)
Phase 2: Installation Verification
• Verify all machine sections aligned properly
• Check belt tensions and tracking
• Inspect roller conditions and gap settings
• Confirm lubrication points serviced
• Test all moving parts manually where possible
• Verify power supply voltage and phase
• Check motor rotations correct
• Test emergency stops at all stations
• Verify control panel functions
• Check safety interlocks operational
• For steam systems: Verify boiler operation and pressure
• For boiler-free lines: Confirm heating element function
• Check temperature controls and sensors
• Verify temperature distribution across rolls/plates
• Check glue kitchen equipment function
• Verify glue pumps and circulation
• Test glue roll gap adjustments
• Confirm temperature control for glue system
Phase 3: Initial Startup Sequence
• Run all sections individually without paper
• Check for abnormal sounds or vibrations
• Verify speed controls function properly
• Test all control system functions
• Start with forgiving paper grades (not expensive or difficult)
• Thread at slow speed
• Check web tracking through entire line
• Verify tension control at each section
• Make initial gap and pressure adjustments
• Prepare adhesive according to formula instructions
• For Xuegong Easy Glue powder: simply add starch and water
• Verify viscosity with Stein-Hall cup
• Confirm gel temperature appropriate
Phase 4: Production Optimization
• Adjust pressure roll for proper flute formation
• Set glue application amount
• Optimize preheater settings
• Check flute quality (height, shape, consistency)
• Verify liner adhesion with pin test
• Set hot plate temperatures appropriately
• Adjust belt pressure and tension
• Verify board flatness at output
• Check bond strength of finished board
• Tune speed for adequate drying
• Set blade positions for target sheet sizes
• Adjust score depths for board weight
• Verify trim removal function
• Check cut quality and accuracy
Phase 5: Operator Training
• Machine operation basics and controls
• Safety procedures and emergency response
• Adhesive preparation and management
• Quality inspection and testing methods
• Basic troubleshooting procedures
• Maintenance and cleaning routines
• Supervised operation at various speeds
• Paper grade changes and adjustments
• Order changes and setup procedures
• Problem recognition and response
Phase 6: Stabilization Period
• Run at conservative speeds initially
• Document all settings and adjustments
• Track quality metrics consistently
• Address issues systematically
• Build operator confidence and skills
• Establish baseline quality standards
• Develop standard operating procedures
• Create setup sheets for common products
• Build maintenance schedules
• Achieve consistent production rates
• Web breaks: Usually tension or alignment issues
• Delamination: Adhesive or heat problems
• Warping: Moisture balance or heat distribution
• Inconsistent quality: Operator training or settings
Xuegong provides comprehensive startup support for customers installing our boiler-free corrugating lines, including on-site training and technical assistance. Contact us for turnkey solutions.
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