Film containers, which are commonly used in daily life, require not only sealing performance and protection of their contents but also ease of opening. This study investigated factors related to openability from the perspective of Kansei Engineering. Since opening a film container involves coordination between one hand that pinches the film and the other that supports the container, grip force was measured for the pinching hand and electromyography was recorded for the supporting hand. The results showed that grip force was regulated according to differences in the peeling strength of four types of film containers, and it is considered that moderate peeling strength provided better openability. Moreover, the coordination between both hands was found to play an essential role in opening film containers easily. These findings suggest that improving openability requires not only modification of film properties but also human-centered research.
YOSHIDA et al. (Thu,) studied this question.