| 摘要 |
PROBLEM TO BE SOLVED: To provide an inexpensive coating for detecting screw looseness capable of detecting looseness of a screw or a bolt, viewing screw looseness by color development from the detection coating when screw looseness occurs, detecting even little looseness by color development to enable early discovery, and detecting screw looseness simply. SOLUTION: In this coating for detecting screw looseness, the coating comprising (a) a microcapsule wherein visibility liquid is enclosed, (b) a hardening resin and (c) a filling material is formed on a screw fastening part. COPYRIGHT: (C)2008,JPO&INPIT
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