ARTICLE HEATER

摘要

[PROBLEMS] To provide an article heater that would allow making of a packing material with desirable water permeability through relatively simple work and use of a heating element having exothermic characteristics appropriate for article heating (initial rise of temperature, or raised temperature/raised temperature continuation period). [MEANS FOR SOLVING PROBLEMS] The heating element (1) for use in the article heater comprises a bag body (10) of packing material having water permeability obtained by bonding together a nonwoven fabric (11) and a perforated resin film (13) with the use of a reactive hot melt adhesive (12) and, enclosed in the bag body (10), an exothermic agent (20) composed of 40 to 70 wt.% aluminum powder and 5 to 40 wt.% hydrated lime powder and/or 5 to 40 wt.% burnt lime powder. The perforated resin film (13) has at least 40,000 holes/m2, exhibiting an opening ratio of 1 to 7%. The reactive hot melt adhesive (12) is coated in an amount of 3 to 9 g/m2.