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This paper provides a detailed guide for Product Design and Development (PDD) of everyday essentials, with a focus on improving user accessibility. It applies Quality Function Deployment (QFD) principles to enhance user experiences by aligning design with customer requirements. Different customer types and their perceptions of everyday essential items are considered, with QFD used as a systematic approach to translate these needs into specific product characteristics, ensuring alignment with user expectations. The paper presents a step-by-step application of QFD on everyday essential design, highlighting key considerations and best practices. A case study on a drying and ironing device demonstrates how this approach encourages innovation and user-centric product design. The study focuses on metropolitan areas around Bangkok, Thailand, with customers aged 18 to 50, emphasizing design for limited spaces and addressing needs related to the rainy season or washing clothes at night. Results show no bad smell caused by bacteria. The key findings guide designers and developers to create products that prioritize user needs and preferences, enhancing overall usability and satisfaction. The contributions of this research benefit designers (manufacturers), customers, and researchers. The implications of this research include minimizing time spent on trial-and-error in the design stage, optimizing and reducing waste from the prototyping process. However, there is still a risk of distortion and loss in translating customers’ needs, highlighting the importance of receiving feedback after product use.

This paper provides a detailed guide for Product Design and Development (PDD) of everyday essentials, with a focus on improving user accessibility. It applies Quality Function Deployment (QFD) principles to enhance user experiences by aligning design with customer requirements. Different customer types and their perceptions of everyday essential items are considered, with QFD used as a systematic approach to translate these needs into specific product characteristics, ensuring alignment with user expectations. The paper presents a step-by-step application of QFD on everyday essential design, highlighting key considerations and best practices. A case study on a drying and ironing device demonstrates how this approach encourages innovation and user-centric product design. The study focuses on metropolitan areas around Bangkok, Thailand, with customers aged 18 to 50, emphasizing design for limited spaces and addressing needs related to the rainy season or washing clothes at night. Results show no bad smell caused by bacteria. The key findings guide designers and developers to create products that prioritize user needs and preferences, enhancing overall usability and satisfaction. The contributions of this research benefit designers (manufacturers), customers, and researchers. The implications of this research include minimizing time spent on trial-and-error in the design stage, optimizing and reducing waste from the prototyping process. However, there is still a risk of distortion and loss in translating customers' needs, highlighting the importance of receiving feedback after product use. [ABSTRACT FROM AUTHOR]

AbstractManufacturers are continuously designing health-related products with various styles and specific characteristics to challenge and outcompete each other. However, it is challenging to convince consumers that a new product’s attributes are better than similar existing products. The main challenge for manufacturers is how to create a product that improves on existing products. This research aims to analyze whether customers' purchasing decisions are aligned with the product’s applicable mechanical characteristics and to develop guidelines for supporting product design and development. The design team can use these guidelines to quickly and easily understand and support customer requirements. The study uses “famous types of heel inserts” as a case study, with quality function deployment, usefulness of product, factor analysis, ergonomics, reverse engineering, and finite element analysis as the key tools. The results can help users select the right health-related product and make small adjustments to their routines to improve their quality of life.