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OwnerHenry Norrby, Mats Nygardhinventors
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The invention relates to a package for goods having a bar-code (2) and a temperature indicator (3) having a contrast medium between a front wall and a base wall. According to the invention, the temperature indicator (3) is placed beside the bar-code (2) in close connection to an outer code bar (4) thereof without covering the bar-code in order to, on one hand, in a first temperature state unimpededly enable scanning of the bar-code, but, on the other hand, after changing of the colour in the contrast medium make scanning impossible, more precisely by making an outer neutral field (5) opaque. The invention also relates to a temperature indicator as such as well as a method for marking packages.
A package for storing goods in a preservative state in which the temperature may not pass a certain limit value, comprising, on one hand, a bar-code of the type that between two outer, light-absorbing code bars includes a plurality of intermediate and likewise light-absorbing code bars mutually spaced-apart by neutral, light-reflecting fields, outer, neutral fields being present also outside of the outer code bars, and, on the other hand, a temperature indicator, which comprises a contrast medium contained between a front wall and a base wall, which medium in a first temperature state is transparent or light reflecting, but which upon transition to another temperature state is triggered insofar as the same is irreversibly converted to an opaque or light-absorbing colour, wherein the temperature indicator is located beside the bar-code in close connection to one of the outer code bars thereof without covering the bar-code, in order to, on one hand, in the first temperature state thereof unimpededly enable scanning of the bar-code, but, on the other hand, after triggering make scanning impossible, more precisely by making an outer, neutral field opaque or light absorbing.
A temperature indicator for packages intended for storage of goods in a preservative state in which the temperature may not pass a certain limit value, comprising a contrast medium contained between a front wall and a base wall, which medium in a first temperature state is transparent or light reflecting, but which upon transition to another temperature state is triggered insofar as the same is irreversibly converted to an opaque or light-absorbing colour, the indicator consisting of a label-like unit, which along at least one edge portion unimpededly enables transmission of infrared light through the front wall in said first temperature state, but prevents such transmission in said second state.
A method for marking a package (1) for storing goods in a preservative state in which the temperature may not pass a certain limit value, comprising the steps of providing the package with a bar-code of the type that between two outer, light-absorbing code bars includes a plurality of intermediate and likewise light-absorbing code bars mutually spaced-apart by neutral light-reflecting fields, outer, neutral fields being present also outside of the outer code bars, and applying a temperature indicator, which comprises a contrast medium confined between a front wall and a base wall, which medium in a first temperature state is transparent or light reflecting, but which upon transition to a predetermined second temperature state is triggered insofar as the same is irreversibly converted to an opaque or light-absorbing colour, said temperature indicator being placed beside the bar-code in close connection to one of the outer code bars thereof without covering the bar-code.
Dependencies are inferred from the claim text.