Time-temperature integrating indicator device with barrier material
    22.
    发明授权
    Time-temperature integrating indicator device with barrier material 失效
    具有阻隔材料的时间积分指示装置

    公开(公告)号:US06244208B1

    公开(公告)日:2001-06-12

    申请号:US09069576

    申请日:1998-04-29

    CPC classification number: G01K3/04

    Abstract: 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 flow of viscoelastic indicator material between the substrate and the backing.

    Abstract translation: 时间 - 温度指示器装置提供对物体的累积热暴露的视觉可见的指示。 该装置包括具有漫反射多孔基体和背衬的基底。 背衬在其表面上包括用于接触基底的粘弹性指示剂材料和用于基本上抑制基底和背衬之间的粘弹性指示剂材料的侧向流动的阻挡材料。

    Time-temperature integrating indicator device
    24.
    发明授权
    Time-temperature integrating indicator device 失效
    时间温度积分指示器

    公开(公告)号:US5667303A

    公开(公告)日:1997-09-16

    申请号:US402133

    申请日:1995-03-10

    CPC classification number: G01K3/04

    Abstract: A selectively activated time-temperature integrating device for providing a visually observable indication of cumulative thermal exposure, in which a viscoelastic material migrates into a diffusely light-reflective porous matrix at a rate which varies with temperature to progressively change the light transmissivity of the porous matrix and thereby provide the visually observable indication. The viscoelastic material can comprise a pressure sensitive adhesive. The visually observable indication can comprise latent indicia which initially are not visible and become visible, obscurable indicia which initially are visible and become obscured, or a combination of both. Various actuating means for selectively switching the indicator from an unactivated state to an activated state are described. Also disclosed are a method for providing a visually observable indication of cumulative thermal exposure and a method for providing a time and temperature integrating device for providing a visually observable indication of cumulative thermal exposure of an object.

    Abstract translation: 一种选择性激活的时间 - 温度积分装置,用于提供累积热暴露的视觉上可观察的指示,其中粘弹性材料以随温度变化的速率迁移到漫反射多孔基质中,以逐渐改变多孔基质的光透射率 从而提供视觉可见的指示。 粘弹性材料可以包括压敏粘合剂。 视觉上可观察的指示可以包括最初不可见且变得可见的潜在标记,其最初是可见的并且变得模糊的可遮盖的标记,或两者的组合。 描述了用于将指示器从未激活状态切换到激活状态的各种致动装置。 还公开了一种用于提供可视可见的累积热暴露指示的方法,以及用于提供时间和温度积分装置的方法,用于提供物体的累积热暴露的视觉上可观察的指示。

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