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First Claim
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1. A method of sterilizing a solid surface, comprising providing a continuous solid surface, and irradiating said surface with laser UV of a wavelength which is bactericidal and producing a power density of laser UV at said surface such that the laser UV does not deleteriously melt said solid surface and yet renders micro-organisms thereat non-viable.
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Abstract
A sterilizing method includes subjecting material, for example packaging board, to laser UV alone, or substantially simultaneously with laser IR and/or hydrogen peroxide to obtain a synergistic effect between the UV and IR and/or hydrogen peroxide, to render micro-organisms present at said material non-viable.
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Citations
43 Claims
- 1. A method of sterilizing a solid surface, comprising providing a continuous solid surface, and irradiating said surface with laser UV of a wavelength which is bactericidal and producing a power density of laser UV at said surface such that the laser UV does not deleteriously melt said solid surface and yet renders micro-organisms thereat non-viable.
- 10. A method of subjecting a continuous surface of a three-dimensional object to laser radiation which is at least partly laser UV, comprising providing a three-dimensional object having an extensive three-dimensional surface, and controlling the direction and intensity of the laser radiation, which is at least partly laser UV so as to promote a substantially even radiation intensity over said surface.
- 15. A method of sterilizing a material comprising providing a material to be sterilized, irradiating the material with IR and with laser UV simultaneously, to produce at said material a bactericidal effect rendering microorganisms at said material non-viable.
- 21. A method of sterilizing a material, comprising providing a material to be sterilized, irradiating the (same) material with IR and UV to produce at said material a bactericidal effect, characterized in that said UV is laser UV.
- 28. A method of sterilizing a material, comprising providing a material to be sterilized, irradiating the (same) material with UV and exposing the same to hydrogen peroxide to produce at said material a bactericidal effect, characterized in that said UV is laser UV.
- 33. A method of sterilizing a solid surface constituting a food contact surface of packaging material, comprising providing a solid surface to be sterilized, irradiating said surface with laser UV of a wavelength which is bactericidal, thereby to render micro-organisms at said surface non-viable.
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