The use of L-fuzzy concept analysis for the determination of the formulations of gelatin-based films that fulfill
specifc functional properties is reported. The requirements of water contact angle (CA), water vapour
transmission rate (WVTR), L* and b* colour values, tensile strength (TS), elongation at break (EB) and gloss
values were specified for both fatty food packaging and wound healing applications. Once the required
formulations were estimated by L-fuzzy concepts, the experimental results showed a high accordance with the
predicted values of the nal properties, as well as with the requirements. The errors were lower than 20% in all
cases, except in colour (for food packaging) and gloss and elongation at break (for wound healing), in which
the nal properties were even better that the estimations. This analysis allowed nding the required
formulations in a highly cost-effective way.