发明授权
- 专利标题： Time-temperature integrating indicator device with barrier material
- 专利标题（中）： 具有阻隔材料的时间积分指示装置
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申请号： US09824343申请日： 2001-04-02
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公开(公告)号： US06435128B2公开(公告)日： 2002-08-20
- 发明人: Jean Qiu , Joan M. Noyola , David J. Yarusso , Kevin R. Green
- 申请人： Jean Qiu , Joan M. Noyola , David J. Yarusso , Kevin R. Green
- 主分类号： G01K300
- IPC分类号： G01K300
摘要：
A time-temperature indicator device provides a visually observable indication of the cumulative thermal exposure of an object. The device includes a substrate having a diffusely light-reflective porous matrix and a backing. The backing includes on its surface a viscoelastic indicator material for contacting the substrate and a barrier material for substantially inhibiting the lateral and longitudinal flow of viscoelastic indicator material between the substrate and the backing.
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