Analysis of Working Posture on Muscular Skeleton Disorders of Operator in Stamp Scraping in ‘Batik cap’ Industry

Batik Cap’ is a technique of wax-resist dyeing applied to a cloth made by printing the fabric with a copper stamp called a ‘cap’ acting as mold. One of the processes of making batik mold is to scrape mold surface. The existing such process rely on a simple tool that does not count the ergonomic aspects especially on a working posture. Inappropriateness of working postures will lead the operator to obtain a variety of muscle and bone disorders, especially in the legs, arms and wrists which degrade the quality of work. The suitability of work postures is measured by RULA scores, while the fatigue level was measured by a start time parameter emergence of disorders/complaints in the muscles and bones (musculoskeletal disorder) using Nordic Body Map Questionnaire. In this study, the more suitable working posture was arranged by adjusting the height of the workbench to result a better working posture. An experiment was conducted with involved a new and existing working posture to examine its effect on operators. The results showed significant advantages in term reducing musculoskeletal disorder