| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a laminate provided with an indicator for heat treatment, which allows whether sterilization treatment has been done to be checked in the state that a boiled/retort pouch food is filled in a packaging bag, from the outside of the bag, which reduces economic losses such as disposal of an ink remaining after use, which is excellent in environmental aspects, which is accommodative to the multiple-grade small-lot production, which does not discolor by heat before its use, which is less in smearing in the printed part after sterilization treatment, and which is excellent in the visibility of whether the sterilization has been done, and to provide its manufacturing method. <P>SOLUTION: The laminate provided with the indicator for heat treatment is offered, which is a laminate obtained by successively laminating, through an adhesive layer, a base material film layer having an indicator ink composition formed thereon that causes an irreversible color change by heating and a heat seal layer, wherein the indicator ink composition comprises a cure-type ink composition for flexographic printing that consists of a component that contains a pigment mainly composed of a bismuth compound and a sulfur compound and a binder containing a UV-curable low molecular weight substance. <P>COPYRIGHT: (C)2006,JPO&NCIPI |
