Acoustic tile
AssigneeA. Ahlstrom Corporation
InventorsJoseph Dussaud, Pierrick Girard, Jean-Michel Santarella
Life of this patent
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Abstract
An acoustic tile comprising a perforated support wherein one of the faces is covered on its entire surface with a nonwoven material, characterized in that the material is coated on at least one face by a photocatalytic composition comprising at least one photocatalyst agent.
Claims12
An acoustic tile comprising a perforated support wherein one of the faces is covered on its entire surface with a nonwoven material, characterized in that the nonwoven material is covered on at least one face by a photocatalytic composition comprising at least one photocatalyst agent.
The tile according to any of the previous claims, characterized in that the photocatalyst agent is TiO2 having a specific surface area greater than 225 m2/g and a particle size on the order of 15 nm.
The tile according to any of the previous claims, characterized in that the photocatalyst composition furthermore contains adsorbent particles.
The tile according to any of the previous claims, characterized in that the photocatalyst composition contains, as a binding agent, an aqueous colloidal dispersion of SiO2 containing between 20 and 50% by weight of SiO2 with a size of between 10 and 50 nm, advantageously between 20 and 30 nm.
The tile according to the previous claim, characterized in that the support is in plaster, wood, metal or PVC.
Dependencies are inferred from the claim text.