When we peel off the aluminum plate, we will find that there are signs of poor adhesion around the bubbling. The reason for this sign is that the air around the bubbling cannot be completely squeezed out and clamped when the bubbling is in the rolling compound. In the middle of the panel, a very thin air layer blocks the full adhesion of the panel. These infusibles may be impurities mixed in plastic particles or plastic particles. The melting point of these plastics is much higher than that of polyethylene. They cannot melt in the barrel and are blocked on the side of the stainless steel wire mesh. To a certain extent, it will cause the extrusion back pressure to rise, so that it breaks the filter and is extruded together to cause bubbling of the core plate.
When producing thin plates, it is necessary to use a certain number of stainless steel wire meshes for filtering. For aluminum-plastic core plates, a certain hole plate with a certain pore size far smaller than the plate thickness can be used to filter, which will not cause the phenomenon of puncture, which can generally be solved the bubbling problem of aluminum composite panel.
Some small factories with no production experience will have this kind of problem, and our factory like Huabond, who specializes in the production of aluminum composite panels with more than 20 years of rich production experience will never make this kind of low-level mistake. Therefore, when customers choose Huabond, they choose quality and peace of mind.
