Sensory Perception Optimization of Consumer Products: Toothpaste Tube Squeezability

This study examines the "squeezability" of toothpaste tubes, focusing on how ease of dispensing influences consumer acceptability of the product. Eight toothpaste samples, modified from a commercial product, were evaluated by 27 panelists in terms of acceptability scale. In parallel, instrumental measurements were conducted using a tactile glove and a texture analyzer to assess grip force and squeeze rate. A toothpaste tube can be too hard (paste does not flow easily) or too soft (paste flowing out uncontrollably) to squeeze. In this work, the optimal range or the "golden middle" of squeezability was determined via statistical analysis of the sensory and textural data, offering insights for improving product design and packaging.