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公开(公告)号:US06203067B1
公开(公告)日:2001-03-20
申请号:US09205699
申请日:1998-12-04
申请人: Adele Shipston , David K. Rice, II
发明人: Adele Shipston , David K. Rice, II
IPC分类号: B42D1500
摘要: Linerless postage stamps are produced by coating a paper substrate on the bottom surface with pressure sensitive adhesive, and coating the substrate on the top surface with release material, such as silicone, which includes an effective amount of stamp cancellation ink retaining particles, so that when the release coat and particles are contacted by stamp cancellation ink the particles will retain sufficient stamp cancellation ink so that the ink is visible on the top face and will not be wiped off during normal handling. The particles may comprise fumed silica, colloidal silica, kaolin clay, aluminum oxide, wollastonite, talc, calcium carbonate, titanium dioxide, or combinations thereof. Stamp indicia is typically provided on the top of the substrate underneath the release coat.
摘要翻译: 无纸邮票是通过用压敏粘合剂在底面上涂布纸基材而制成的,并且使用诸如硅树脂的剥离材料涂覆在顶部表面上的基材,其包括有效量的印模消除油墨保留颗粒,使得当 释放涂层和颗粒通过印记消除油墨接触,颗粒将保留足够的消除印墨,使得油墨在顶面可见,并且在正常处理期间不会被擦除。 颗粒可以包括热解二氧化硅,胶体二氧化硅,高岭土,氧化铝,硅灰石,滑石,碳酸钙,二氧化钛或其组合。 印记标记通常设置在脱模涂层下方的基材的顶部。