Step 1: Cleaning the Machine before Calibration
Clean all glue rollers, trays, and feeding surfaces prior to calibration. It can also result in uneven spreading results if old or hardened glue affects the balance of the rollers.
Step 2: Roller Gap Adjustment
Set proper distance between top and bottom rollers according to thickness of veneer Good gap control is natural to help the glue get spread evenly without over application & too dry spots.
Step 3: Check and Adjust Glue Viscosity
Spreading performance is directly influenced by the glue thickness. Periodically check viscosity and adjust the dilution or heating system to ensure a stable flow that meets the production needs of plywood.
Step 4: Synchronization of Speed Between the Rollers and Feeding System
Make sure feeding speed must be comparable to the rotation speed of the roller. Imbalance in speed can lead to uneven glue lines, excess glue or insufficient coating.
Step 5: Test Run for Uniform Glue Distribution
Put a sample veneer through the machine and check glue coverage. You are training with data until October 2023.
Step 6: Check the Alignment of Pressure and Roller
Rollers should apply uniform pressure across the entire veneer width. This misalignment can yield varying degrees of coating and can diminish the adhesive strength in the later pressing stages.
Step 7: Tibber / Glue System temperature control
Hot-melt or temperature-sensitive adhesive when heating, the heating system should be stable. Temperature goes up — glue can be runny and bonding may not have been performed well.
