2022 年 6 巻 1 号 p. 1_49-1_58
The purpose of this paper was to identify changing impressions towards 22 composites of plastics kneaded with different fragrant natural organic materials preserving their odors, and identify the determining factors by comparing the impression scores among the composites. Each plastic sample was prepared by being molded into an egg-shape using injection molding. To determine the effect of odor, impression score experiments were conducted through a survey. Each sample was evaluated twice by the same group of 21 people aged between 22-38 years. Only sense of vision and tactility was evaluated in the first round, then the samples were evaluated again by sense of vision, tactility, and smell. Odor was found to have a significant effect on the impression of the plastic samples. In the impression evaluation experiment, the impression factor score of acceptability in 18 out of 22 samples, the impression factor score of simplicity in 14 out of 22 samples, and the impression factor score of organicity in 21 out of 22 samples were enhanced by adding the odor factor to the evaluation process. It was confirmed that the addition of appropriate fragrant natural organic materials to resin products could make them be perceived more organic, more simple or rich, and more acceptable.