Abstract
While the value of FRP products has declined due to environmental concerns, other plastic materials such as polypropylene have gained popularity as alternatives to FRP. However, polypropylene is also plastic, which means that it is not biodegradable and becomes waste that cannot be returned to the soil. Considering this fact and focusing on material for chairs, one of the basic products used in daily life, I started this study with the presumption that environment-friendly material can be utilized for free-form products other than chairs to produce a wide range of useful items for daily living. I also consider the harmony between Japanese preference for material and its suitability for the age to come as a cornerstone, and I intended to propose a new and desirable relationship between mankind and tools.