公开(公告)号：US3702077A

公开(公告)日：1972-11-07

申请号：US3702077D

申请日：1970-08-19

申请人： BELA G SZABO

发明人： SZABO BELA G

IPC分类号： G01K11/08

CPC分类号： G01K11/08

摘要： A defrost evincing device, which operates as a telltale temperature indicator for frozen packages or spaces maintained at low temperatures to indicate reliably the occurrence of even a transient thawing temperature which may have been followed by a re-freezing cycle. Such telltale indicating assemblies have been included for this purpose in frozen food packages and the like, and these generally comprise a capsule filled with a colored liquid such as colored water, which capsule ruptures upon the initial freezing of the package, leaving free the frozen coloring fluid for eventual flow upon the thawing of the frozen package. When this occurs, the flowing liquid may permeate an absorbent piece of paper or the like disposed in proximity to the capsule, which imparts distinctive color to the absorbent indicator, which is permanent and irreversible, to constitute evidence of the package having gone through at least one thawing cycle even if it was re-frozen subsequently. The instant invention aims to provide a rugged container for the colored fluid capable of sustaining heavy loads so that the same is fractured only upon freezing of the container rather than by any weight loadings to which the same may be subjected. Thereby assurance is had that when the absorbent indicator becomes distinctively colored, it is the result of the flow of the colored fluid upon the thawing of the frozen package, and not as a result of the fracture of the container in its initial state by the loadings imposed thereon. To ensure the fracture of the container by the expansive force of the freezing fluids, at least one of the walls thereof is of thinner cross-section than the load-bearing walls. Furthermore, a tension member is provided in the container, acting against the frangible wall, to assure an adequate fissure in the ruptured receptacle through which the colored fluid may flow towards the absorbent indicator.

摘要翻译： 除霜显示装置作为冷冻包装或维持在低温下的空间的指示温度指示器，可靠地指示甚至可能伴随着再冷冻循环的瞬时解冻温度的发生。 为了此目的，这种指示性组件已被包括在冷冻食品包装等中，并且这些通常包括填充有着色液体如彩色水的胶囊，该胶囊在包装的初始冷冻时破裂，留下冷冻着色 在冻结包装解冻时最终流动的液体。 当这种情况发生时，流动的液体可能渗透在胶囊附近设置的吸收性纸片等，这对吸收性指示剂具有鲜明的色彩，这是永久性和不可逆性的，以构成至少已经穿过的包装的证据 一个解冻周期，即使它再次冻结。 本发明的目的是提供一种用于能够承受重载荷的有色流体的坚固的容器，使得它们仅在冷冻容器时才被破裂，而不是通过可能经受的任何重量载荷。 因此，确保当吸收剂指示剂变得明显着色时，这是着色液体在冷冻包装解冻时的流动的结果，而不是由于容器在其初始状态下被装载破裂的结果 对此施加。 为了通过冷冻流体的膨胀力确保容器的断裂，其壁中的至少一个壁的横截面比承载壁更薄。 此外，在容器中设置张力构件，作用在易碎壁上，以确保破裂的容器中的足够的裂缝，有色流体可以通过该裂缝向吸收剂指示器流动。