@article{oai:tobunken.repo.nii.ac.jp:00003683,
 author = {神谷, 嘉美 and 加藤, 寛 and Yoshimi, KAMIYA and Hiroshi, KATO},
 issue = {45},
 journal = {保存科学, Science for conservation},
 month = {Mar},
 note = {Lacquer called urushi, which is the only natural polymer produced in Asia, is polymerized by laccase to produce a beautiful coating. Recent studies have made it clear that urushi coating films are weak against ultraviolet irradiation and that exposure to ultraviolet rays could cause them to deteriorate. For example, flaking off of films, loss in gloss, or cracking might possibly occur. Restoration for conservation is, therefore, necessary for historic urushi objects.
 There are many experimental reports using a single-layer urushi coating film on a glass board, but there are few chemical research data of traditional restoration techniques using urushi. Therefore, in this study, samples of polished four-layer urushi coating films were first exposed to ultraviolet irradiation. Then the effect of restoration techniques for conservation was examined by applying two techniques, suri urushi and urushi gatame, on the deteriorated coating films. Through this study, it was verified that the appearance of the films changes differently with the two techniques.
 Suri urushi is suitable for adjusting the gloss, because gloss rises on the deteriorated films. Urushi gatame is suitable for restoration in general, because it suppresses changes of gloss and color in the restoration of cultural properties to a great degree. The results show that repair of and protection against deteriorated urushi coating films are possible by restoration techniques using urushi sap.},
 pages = {251--258},
 title = {劣化した漆塗膜に対する強化手法の外観への影響},
 year = {2006}
}