| 摘要 |
PROBLEM TO BE SOLVED: To provide a printed circuit board having a characteristic equivalent to a circuit board manufactured from a material based on fossil resources, and capable of exerting COreduction effect at times of manufacturing and burning.SOLUTION: The printed circuit board includes a metal wiring pattern on a substrate, wherein the substrate is a printed circuit board containing lignin, a crosslinking agent, a filler, a fire retardant, and the substrate, and the lignin is obtained by removing a cellulose or hemicellulose component from a plant by a water or steam explosion method. |
