Patent Application
20080280121
The invention relates to panels and conduits made of polyurethane foam, in particular for the conveyance of air for environmental conditioning, with one or more faces covered with laminas of a metallic material, treated with silver ions.
There exist commonly known polyurethane panels and conduits with covers realized with laminas of metallic, plastic or paper material which are utilized to satisfy manifold needs whose main aim is to maintain the temperature of rooms and conduits within a pre-fixed band.
These types of polyurethane insulating panels are utilized, for example, to maintain the temperature of cold rooms.
Said polyurethane insulating conduits are utilized, instead, for example, to maintain the temperature in systems for the conveyance of hot and cold air in winter and summer conditioning systems.
One of the uses of said panels and conduits is in hospital organizations, in foodstuff production plants, in semiconductor production plants and in general in rooms where particular hygienic conditions must be respected.
To maintain the necessary hygienic conditions, said panels and said conduits undergo frequent washing treatments. These treatments impose a stop to the activity or use of the rooms in which said panels and/or conduits are installed with expenditure of energy and sometimes, not succeeding, despite the washing, to reach the desired hygienic conditions. It is also known that silver ions have very potent antimicrobial properties. Likewise, it is known that silver ions are an active antimicrobial agent for at least 10 years and to obtain an antibacterial effect, the silver ions must be available in solution on the bacterial surface. The silver ions destroy bacteria instantly, blocking the enzymatic respiratory system and altering the microbial DNA and the cell wall, while they do not have toxic effects on human cells in vivo.
The aim of this invention is to realize a panel and/or a conduit able to perform an antimicrobial function, rendering possible a reduction in the frequency of the washing treatments which are presently effected for the commonly known panels and conduits.
This aim is achieved by means of the use of silver ions applied to the surface of the panel and/or conduit covering lamina facing the interior of rooms or conduits which must respect certain hygienic conditions.
The bacteria contained in the air present inside said rooms or said conduits, upon coming into contact with the covering lamina of the panels and/or said conduits, treated with silver ions, are destroyed thanks to the antimicrobial properties of said silver ions.
A clearer understanding of the invention will emerge from the description that follows of a preferred embodiment, provided in the form of a non-limiting example, with reference to the accompanying drawings, in which:
With reference to
The antimicrobial capacity of the silver ions occurs upon the bacteria's contact with the silver ions. Applied to the surface of the panel lo and/or conduit present in the room or conduit concerned is a solution in which silver ions are present. In the embodiment shown in
In the description of the embodiment, specific reference is made to the application of a solution comprised of silver ions and finishing varnish to one or more covering laminas of the panel and/or conduit but naturally, the methods by which the silver ions are applied to said surface of the covering can vary according to the technical knowledge of the sector without falling beyond the scope of protection of the annexed claims.
| Number | Date | Country | Kind |
|---|---|---|---|
| MI2005A001959 | Oct 2005 | IT | national |
| Filing Document | Filing Date | Country | Kind | 371c Date |
|---|---|---|---|---|
| PCT/EP2006/003033 | 4/4/2006 | WO | 00 | 7/22/2008 |
