WOOD GOMMING
Aeroscrubbing & Micro-scrubbing
These two techniques are almost similar. The only difference is the pressure used, which is higher in air-scrubbing than in micro-scrubbing.
These are ecological cleaning processes by micro-abrasion which consist in the projection of a mixture of air and micro-granulates.
Respectful of the environment and of our employees, we use sand without quartz, which is one of the main factors of bronchopulmonary cancers.
The system of micro-scrubbing or air-scrubbing with bicarbonate, very effective and ecological, constitutes the only valid alternative to traditional dry blasting.
- Aggregates of natural origin as neutral as possible with a hardness adapted to the support to be treated.
- A large volume of air which leads the aggregate to the gumming nozzle.
- The use of biodegradable ecological abrasives, a more gentle and therefore less aggressive pressure that respects the treated surface.
The bicarbonate gumming system is the only ecological alternative to traditional dry sanding.
Micro-sandblasting
This process consists in projecting fine particles of controlled size and composition onto the substrate to be treated, at a certain pressure, a given projection angle, a certain distance, a certain nozzle diameter and for a given time.
The most commonly used abrasive is silicate. The grains, of variable size (approx. 80 μm (micro-sanding), have sharp edges and are very hard. The grain size and diameter influence the result (rough, smooth...).
However, some companies minimize this influence for cost reasons. In our case we will call micro-sanding the use of a fine grain, ideal for varnished surfaces.
The micro-sandblasting allows increase by approximately 50%. the initial adhesion properties compared to degreasing alone. The greatest improvement is achieved by silicate microblasting.
Glass beads also increase adhesion, but to a lesser extent. However, it can be seen that the diameter of the microblasting particles have an effect on sustainability. Microblasting with small diameter silicate particles gives a better durability of the assemblies.
We can conclude that the main difference between sanding and micro-sanding is the penetration of the impregnation. In sanding we crush the veins of the wood, so it is a superficial impregnation (100gr. impregnation per m2). By carrying out a micro-sanding we open the veins of wood, it is there a deep penetrating impregnation (400gr. of impregnation per m2)
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