Method of sterilising a packaging material by means of a sterilising agent in liquid form
First Claim
1. Method of sterilising a packaging material, comprisingforcing liquid hydrogen peroxide as a sterilising agent through a nozzle to form a jet directed towards a packaging material,subjecting the jet of liquid hydrogen peroxide to a controlled, periodic disturbance causing the jet of liquid hydrogen peroxide to form a train of hydrogen peroxide droplets substantially along a single imaginary line and of controlled, essentially uniform size and controlled rate,electrically charging the hydrogen peroxide droplets to produce electrically charged hydrogen peroxide droplets by conveying the hydrogen peroxide droplets between two charging plates,deflecting either wanted or unwanted hydrogen peroxide droplets by conveying the electrically charged hydrogen peroxide droplets between a pair of deflection plates,moving the packaging material in relation to said nozzle or vice versa, so that the wanted hydrogen peroxide droplets are applied to the packaging material to form a coating of hydrogen peroxide of controlled thickness and controlled coverage on the packaging material, andvaporising the film of hydrogen peroxide on the packaging material to carry out sterilisation of the packaging material.
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Accused Products
Abstract
Method of sterilising a packaging material (1) by means of a sterilising agent in liquid form, comprising the steps of: providing a packaging material (1) to be sterilised, providing a source (11) of sterilising agent in liquid form, forcing the liquid sterilising agent through a nozzle (12) to form a jet (14a) directed towards the packaging material, subjecting the jet (14a) of liquid sterilising agent to a controlled, periodic disturbance causing the jet (14a) of liquid sterilising agent to form a train (14) of droplets of controlled, essentially uniform size and controlled rate, moving the packaging material (1) in relation to said nozzle (12) or vice versa, whereby said train (14) of droplets forms a coating (2) of sterilising agent of controlled thickness and controlled coverage on the packaging material (1), and vaporising the film of sterilising agent on the packaging material (1). The invention also concerns a similar method and devices for implementing said methods.
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Citations
7 Claims
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1. Method of sterilising a packaging material, comprising
forcing liquid hydrogen peroxide as a sterilising agent through a nozzle to form a jet directed towards a packaging material, subjecting the jet of liquid hydrogen peroxide to a controlled, periodic disturbance causing the jet of liquid hydrogen peroxide to form a train of hydrogen peroxide droplets substantially along a single imaginary line and of controlled, essentially uniform size and controlled rate, electrically charging the hydrogen peroxide droplets to produce electrically charged hydrogen peroxide droplets by conveying the hydrogen peroxide droplets between two charging plates, deflecting either wanted or unwanted hydrogen peroxide droplets by conveying the electrically charged hydrogen peroxide droplets between a pair of deflection plates, moving the packaging material in relation to said nozzle or vice versa, so that the wanted hydrogen peroxide droplets are applied to the packaging material to form a coating of hydrogen peroxide of controlled thickness and controlled coverage on the packaging material, and vaporising the film of hydrogen peroxide on the packaging material to carry out sterilisation of the packaging material.
Specification