hrvatski

Research on Workload in the Technological Sewing Process using ANSI Z 365 Standards

In the technological sewing process, the execution of technological operations is most often performed in a sitting working position. When sewing on the sewing machine, the worker uses the torso and hands to perform machine- hand and auxiliary-manual technological sub- operations, and the feet to achieve the required sewing speed of the sewing machine in machine-hand sewing sub-operations. Due to the physic-mechanical characteristics of the work pieces, careful handling is required, which needs extremely good motoric and tactile abilities of the worker, which are manifested in the mobility and coordination of movements of the fingers, hands, arms and feet. The paper presents a study of workload and musculoskeletal disorders on a sample of 50 workers in the technological sewing process using the ANSI Z 365 questionnaire (American National Standards Institute). According to the survey, the average age of the working population was 48 years, while the average length of employment in this type of work (sewing) was 22 years. The analysis of the questionnaire revealed that 76% of workers felt pain in the neck area, 58% in the left shoulder, 90% in the upper back, 72% in the middle back and 70% in the lower back. Research data show that workers in the sewing process due to their long sitting position with the required high degree of motoric coordination of the body, arms and legs, and because of the high repetitiveness of performing the same movements, feel pain in the cervical spine, shoulders and the entire back area. In order to reduce workload and at the same time pain after many years of working in the sitting position, it is necessary to design a workplace so that the worker can use the proper posture of the body and head when sitting.

technological sewing process ; workload ; ANSI Z 365 standard

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