The correct and regular cleaning of foil wrapping and laminating machinery is essential for the proper application of the adhesive.
In the case of reactive polyurethane hot melt adhesives, it should be considered that the continuous starting and stopping of production lines that the already melted adhesive comes in contact with air. This triggers the crosslinking of the glue.
Crosslinked adhesive cannot be remelted and applied, and this represents a waste as well as a risk of damage to many parts of the machinery, if not removed promptly and correctly.
How can you avoid wasting adhesive or preventing it from crosslinking? The first rule would be to melt only the quantity necessary for that type of processing, followed by cleaning always before the weekend or company closure.
Based on the type of machinery, TAKA has developed several cleaners.
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In wrapping systems utilizing slot nozzle glue heads, like profile wrapping machines coupled with a melter, an effective cleaner helps to:
This guarantees a steady flow of adhesive from the melter to the glue head, preventing fluctuations in application.
These cleaners come in various sizes for melting or dosing, ensuring a consistent adhesive flow.
The primer application system also demands regular maintenance. Its intricate network of valves and tubing must be kept free from blockages.
Inconsistent primer application results in poor adhesion and a higher likelihood of defects in PVC profile wrapping. For this purpose, the cleaners are formulated as liquids and supplied in convenient containers.
For panel wrapping machines, cleaning the application rollers necessitates regular and timely maintenance using substances that are compatible with the rubber roller coating.
Given the substantial adhesive buildup on these rollers compared to wrapping heads, the cleaning process is more time-consuming.
The cleaners are supplied in granular form for convenient application between the spreading rollers.