发明名称 Water-metachromatic laminate, and process for its production
摘要 On a support, a porous resin layer which is opaque in a water-unabsorbed state and capable of turning transparent in a water-absorbed state is formed, and also a water-repellent resin layer is so provided as to exist in the porous resin layer at its some area or areas in a co-existent state, to make up a water-metachromatic laminate. A novel toy element can be provided in which latent images standing invisible in a normal condition are rendered visible by means of water as a medium so as to be visually distinguished.
申请公布号 US6984418(B2) 申请公布日期 2006.01.10
申请号 US20040819229 申请日期 2004.04.07
申请人 THE PILOT INK CO., LTD. 发明人 NAKASHIMA AKIO;KATO HISAYOSHI
分类号 B05D5/00;B32B27/04 主分类号 B05D5/00
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