Toyoda Gosei Co. Ltd. (TYO:7282) will boost production capacity of plastic fuel filler pipes in Japan and the U.S. to meet growing demand for lightweight products. The company will spend a total of 2 billion yen ($18.12 million) on the effort, with around 600 million yen going to its Heiwacho Plant in Inazawa, Aichi Prefecture, and the other 1.4 billion…