Many users may have veneer press needs, but if have improper operation, users may face problems like bubble in the middle after pasting.
Aim Based on a research, to give a series of purposeful analyses and Suggestions.
The best choice for veneer is a hot press machine.
If there are bubbles after the hot press veneer, it is generally the following situations:
The first is temperature. There are many options for the working temperature of the press. It is necessary to confirm with the glue supplier in advance what is the best temperature for using glue. Some are only 70 degrees, and some will have a higher temperature.
The second is the pressure. Generally speaking, the pressure of pressing the 4X8 door panel is about 80 tons, and it does not need to be very large.
The third is time, which has a lot to do with glue. For example, if the pressure is high and the temperature is high, the time for pressing the goods will be shorter. On the contrary, if the temperature is not high, the time for pressing the goods and the drying time will be longer, ranging from three to six minutes.
If foaming, you can operate from the following aspects: extend the pressing time, increase the pressure, choose a more suitable glue, etc.
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If have limited budget, can also consider use a cold press machine.
Cold press veneer requires high pressure, high flatness, and also pay attention to the flatness of the substrate.
Few points may cause these bubbles:
- Too Much Adhesive
- Shop Temperature below the minimum glue use temperature
- Pressing the panel for too long
- inadequate pressure while the panel is being pressed.
Most cold press veneer glues are water-based. Bubbles and ripples are caused by the swelling of wood cells in the veneer due to the absorption of water content from the adhesive.
