发明授权
- 专利标题: Time indicator having discrete adhesive
- 专利标题(中): 时间指示器具有离散粘合剂
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申请号: US282178申请日: 1994-07-29
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公开(公告)号: US5446705A公开(公告)日: 1995-08-29
- 发明人: David J. Haas , Sandra F. Haas
- 申请人: David J. Haas , Sandra F. Haas
- 申请人地址: NY Suffern
- 专利权人: Temtec, Inc.
- 当前专利权人: Temtec, Inc.
- 当前专利权人地址: NY Suffern
- 主分类号: B42D15/10
- IPC分类号: B42D15/10 ; G04F1/00 ; G04F13/00 ; G07C1/00 ; G09F3/02 ; G04B17/00 ; G09F19/00
摘要:
A time indicator is provided that changes color or produces an image or information after a specific time interval. The time indicator includes a base substrate with colored dye deposited on a first surface; and a substrate having an adhesive on a first surface thereof, the adhesive positioned at discrete locations on the first surface of the substrate. The substrate and the base substrate are put into adhesive contact. The adhesive contacts and coacts the colored dye to dissolve the dye and permit the dye to migrate through the adhesive to cause a color change visible through the substrate. The discrete adhesive inhibits lateral migration of the dye to preserve the image or information of the dye in a clear and/or understandable condition.
公开/授权文献
- US4358780A Optical information record member 公开/授权日:1982-11-09