System and method for improved quality management in a product logistic chain
A quality management system for products including a multiplicity of product unit specific indicators, each operative to provide a machine-readable indication of exceedence of at least one threshold by at least one product quality determining parameter, an indicator reader operative to read the product unit specific indicators and to provide output indications and a product type specific indication interpreter operative to receive the output indications and to provide human sensible, product unit specific, product quality status outputs.
1. A method for producing a plurality of product quality indicators, each operative to provide a machine-readable indication of exceedence of at least one temperature threshold, the method comprising:
providing at least one substrate strip including a plurality of barcodes in a first readable state;
providing an additional substrate strip having formed thereon a plurality of temperature responsive elements; and
joining said at least one substrate strip and said at least one additional substrate strip to form said plurality of product quality indicators, each of said plurality of product quality indicators including one of said plurality of barcodes in a first readable state and one of said plurality of temperature responsive elements,
each of said plurality of temperature responsive elements being operative upon exceedence of said at least one threshold to color a portion of said at least one substrate strip, thereby causing each of said product quality indicators to assume a second readable state.
2. A method according to claim 1 and wherein said providing at least one substrate strip comprises:
providing a transparent substrate strip;
printing, in a first color, said plurality of barcodes in said first readable state on said transparent substrate strip;
forming a plurality of transparent areas alongside each of said plurality of barcodes in said first readable state by printing, in a second color, areas of said transparent substrate strip other than said plurality of barcodes and said plurality of transparent areas;
providing an opaque substrate strip; and
joining said transparent substrate strip and said opaque substrate strip.
3. A method according to claim 2 and wherein said second color is a color defining high contrast with respect to said first color.
4. A method according to claim 1 and also comprising forming a perforation line between adjacent indicators.
5. A method according to claim 1 and also comprising maintaining said additional substrate strip having formed thereon a plurality of temperature responsive elements below a predetermined temperature threshold prior to use.