首页>
外国专利>
Method for impressing directly on paper holograms kinetic holograms diffraction patterns or microengravings producing other optical effects
Method for impressing directly on paper holograms kinetic holograms diffraction patterns or microengravings producing other optical effects
展开▼
机译:直接在纸质全息图上施加动态全息图衍射图样或产生其他光学效果的微雕刻的方法
展开▼
页面导航
摘要
著录项
相似文献
摘要
PCT No. PCT/IT95/00222 Sec. 371 Date Jun. 16, 1997 Sec. 102(e) Date Jun. 16, 1997 PCT Filed Dec. 19, 1995 PCT Pub. No. WO96/19357 PCT Pub. Date Jun. 27, 1996A method for impression microengravings, which reproduce holograms, kinetic holograms, or diffraction patterns, directly on paper through an embossing process. Paper is subjected to a humidification step to give it a degree of humidity between 60 and 80% of relative humidity. The humidified paper is then passed through an embossing group, consisting of an embossing cylinder carrying the microengravings and a counterthrust cylinder, at a temperature and a pressure on the paper within the ranges of 90-220 DEG C. and 20-120 kg/mm2, respectively.
展开▼