The load measurement of the beating brush in the second lining procedure

Abstract

Hanging scroll is a traditional Japanese ornamental art, which includes paintings and calligraphy. Scrolls are unrolled and hung on a wall or in an alcove when displayed and are rolled up and stored in a box. They should hang straight without rippling or warping when unrolled, and be rolled up smoothly and tightly from the bottom when stored. To enable rolling out and hanging scrolls smoothly, the paintings and calligraphy referred to as “main works” are generally backed with traditional Japanese paper and adhered using a paste made from wheat starch. Especially in order to guarantee this flexibility function that enables rolling up smoothly, a type of glue that does not harden after it dries is employed as the adhesive agent for the lining process. But since this glue does not have sufficient adhesive effect, craftsmen employ a traditional technique of pounding the paper with a special “pounding brush” to enhance its adhesive effect. In this study, using pressure measurement films, we considered differences in the techniques of an expert and a non-expert by measuring the pounded area by a brush and the pressure to be applied by pounding with a brush. Through the quantification of the differences of these two subjects, we aim to understand the characteristics of proper pounding technique, to help new craftsmen learn more quickly.