Design of liquid container handles in accordance with user preferences

Abstract

In this study, a prototype liquid container combined with auxiliary handles was designed to increase the safety of manual handling and to protect users of these containers from hand contamination. A Likert summated rating method as well as a pairwise ranking test was applied to evaluate the user preferences for handles provided for the container under the conditions of different shapes and positions. The results show that the participants preferred perpendicular orientation of the handle on the top of the liquid container while carrying the containers and the crosswise position of the handle at the side of the container while pouring the liquid. In order to satisfy both conditions, the container needs to be designed with handles in perpendicular as well as crosswise positions for selective application. A prototype liquid container with provided auxiliary handles was developed based on the results of the evaluation. It is recommended that a liquid container provides extra handles to reduce musculoskeletal stress and in turn increase user satisfaction.

Manejo Manual De Cargas: Una Aproximación De La Evidencia Al Terreno

“…Entre estos factores causales, las características del objeto que se levanta ejercen una gran influencia en el estrés biomecánico, fisiológico y psicofísico que acompaña al MMC (Chaffin, 1987;Sanders & McCormick, 1992;Mital et al, 1993;Waters et al, 1993;Ciriello, 2008). Por ejemplo, el tamaño del objeto afecta al peso máximo aceptable de la carga (MAWL), al gasto energético y a las tensiones de la columna vertebral (Ayoub & Mital, 1989) y al peso máximo aceptable (MAW) de levantamiento (Ciriello, 2003;Ciriello, 2007); la forma del objeto afecta al MAWL y a la distancia Centro de Gravedad-L5/S1 (Garg & Saxena, 1980;Mital & Okolie, 1982;Smith & Jiang, 1984); la distribución y la estabilidad del objeto afectan a la MAWL (Ayoub & Mital, 1989); y las asas del objeto también afectan a la MAWL (Garg & Saxena, 1979) y a las preferencias del usuario (Jung & Jung, 2007). Por lo tanto, Ayoub (1971Ayoub ( , 1982 afirmó que el peso y su distribución, la forma, la rigidez y la disponibilidad de asas y dispositivos de acoplamiento similares son las principales características que deben considerarse en el proceso de diseño de las tareas de elevación.…”

Research methodologies for assessing the ergonomics of packaging products - A review

“…Researchers have conducted various studies such as examining the optimal grip span concerning an individual's anthropometry for isometric power grip exertion(Eksioglu, 2004). Objective measurements such as pressure pain threshold measurements(Madeleine et al, 2003), joint and body posture and deviation, grip force/force/ torque,(Motamedzade et al, 2007;Jung, 2008;Wu et al, 2009) and the size and distribution of hand pressure(Aldien et al, 2005) are some of the frequently performed measurements in objective methods(Bisht and Khan, 2013). Various researches have been performed in the field of ease of opening packaging.…”