Patent ID: 7950385
Filing Date: 2011-05-31
Classification: A61F

Abstract:
1. A bag member for a disposable warmer, having a bag including a bag member (A) and a bag member (B), the bag members (A) and (B) being heat-sealed with each other to form the bag, the bag member (A) including at least a layered structure with a porous film and a nonwoven fabric layer, and the bag member (B) including at least another layered structure with a stretchable film and another nonwoven fabric layer; the bag member comprising: a heat-sealed portion; a portion with a heater to be sealed therein; and a heater-free portion, by heat-sealing the bag member (A) and the bag member (B), wherein a slit is arranged only in the porous film constituting the bag member (A) at the heater-free portion.