| 摘要 |
<p>The present invention provides an expandable heating sheet which does not lose its expansion property even when a heating composition thereof is hardened due to reaction with oxygen, which can be used while being fitted to a bendable portion such as an elbow or a knee, and which can be easily manufactured with efficiency, and a heating sheet bag in which the expandable heating sheet is hermetically sealed. The expandable heating sheet includes: a plurality of heating bodies which are flat arranged on a plane; and two laminate package materials sandwiching the plurality of heating bodies from both sides thereof, in which the two laminate package materials are of one of one type and two types selected from the group consisting of: a laminate package material including a thermal fusion-bondable seal material having a repetitive waveform and a stretchable base; a laminate package material including a thermal fusion-bondable seal material having a repetitive concavo-convex form and the stretchable base; and a laminate package material including a thermal fusion-bondable seal material having a plurality of penetration portions and the stretchable base.</p> |
