In response to the issue that traditional children's food packaging overly emphasizes visual appeal while neglecting safety requirements such as preventing accidental ingestion and choking, the work aims to propose a safety-oriented optimization design for food packaging targeting school-age children, so as to enhance the packaging's safety protection performance, user convenience, and interactive educational functions. A user demand-driven packaging safety optimization design process was constructed by integrating the Analytic Hierarchy Process (AHP), the Quality Function Deployment (QFD), and the Theory of Inventive Problem Solving (TRIZ). Firstly, the demands of school-age parents and children were collected through questionnaires and interviews, and the priority weights of each demand element were determined with AHP. Secondly, the high-priority demands were transformed into specific engineering technical characteristics through QFD, and a "House of Quality" model was established to clarify the design improvement directions. Thirdly, based on the identified contradictions such as structural strength and ease of opening from the House of Quality, the TRIZ contradiction matrix and inventive principles were employed to seek innovative solutions. Finally, prototypes were developed in combination with augmented reality (AR) interactive technology and tested for verification. By applying this integrated method, multiple innovative safety design schemes for school-age children's food packaging were proposed, achieving a coordinated optimization of packaging safety, convenience, and fun. Preliminary test verification indicated that these schemes had high feasibility and can effectively reduce the risk of accidental ingestion and injury for school-age children and enhance user experience. The AHP/QFD/TRIZ integrated design method can systematically identify and solve safety contradictions in the design of school-age children's food packaging, improving the scientificity and innovativeness of multi-objective optimization. This study expands the safety optimization design ideas in the field of packaging engineering and can provide new engineering practice references for the improvement of food packaging safety.
Key words
school-age children's food packaging /
AHP-QFD-TRIZ design /
safety optimization /
user demands /
engineering innovation
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