抄録
This paper has investigated effects of the bottle opening size (28, 33, 38mm) and the difference of remaining liquid amount (100, 200, 300ml) on drinking feelings in order to improve the comfort level of consumers when drinking directly from the opening of aluminum bottle. A survey over 30 subjects has been performed, and they have evaluated that the 33mm opening is the best no matter remaining liquid amount. From the result of the factor analysis, it has been found that drinking ease consists of the factor of adjustability and the factor of flow amount. In addition, it has been estimated that the adjustability of the 33mm opening is hard to be affected by liquid amount. Moreover it has become clear from the results of the observation of drinking action that there is appropriate flow amount and angular velocity for subjects.
