Critical temperature indicator and manufacturing method thereof

摘要

An upper section is formed of a base film. A developing media member is formed of a micro-porous film to be positioned correspondingly to the upper section such that the developing media member is joined with the upper section. A time control section is formed by engraving a movement path of developing media on the developing media member by means of a printer, cutter or the like. At least one or more cutaway sections and a plurality of transparent members are positioned on the time control section, wherein the cutaway sections are positioned at both side surfaces of the time control section corresponding to the movement path so as to temporarily store the developing media, and the transparent members have linear-shaped first display windows so as to display the arrival of the developing media, which indicates the end of the movement of the developing media.

主权项

1. A critical temperature indicator constituted by an upper section and a lower section formed of a transparent PTP or vinyl coating film as a single body, the critical temperature indicator comprising:
the lower section formed of a base film having an upper surface dyed with red or a predetermined color; a developing medium member stacked on the lower section, formed of a micro-porous film, and configured to absorb a developing material to enable diffusion thereof; a time control unit printed on the developing medium member in a stamped line or cutout shape using a printer or a cutter, removed to remain a rectangular or circular moving passage only, and in which the developing material moves through the moving passage only as a time elapses; transparent members sequentially stacked on the developing medium member, and having cutout sections corresponding to both side surfaces of the moving passage and cut out to temporarily store the developing material, and a first display window having a straight shape through which movement of the developing material from the moving passage to a center thereof is able to be seen; and the upper section having a second display window formed at a position corresponding to the first display window and a forming section having a spherical shape with a predetermined size and configured to accommodate a developing material member in which the developing material is accommodated, and formed of an opaque layer, wherein the upper section in which the developing material member is integrally sealed with the lower section, the developing medium member, the transparent members and the forming section.