Heating element

A - Human Necessities – 61 – F

Patent

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Details

IPC codes

A61F 7/08 (2006.01) C09K 5/16 (2006.01) F24J 1/00 (2006.01)

Type

Patent

Patent number

CA 2573285

Description

A heating element that safely secures space on the periphery of exothermic composition to thereby realize thermal insulation of the exothermic composition, regulating of the amount of air taken inside and prevention of moisture scattering. There is provided a heating element produced by superimposing on a base material an exothermic composition molding being a molding of an exothermic composition capable of generating heat upon contact with air, effecting covering with a covering material and heat sealing the periphery of the exothermic composition molding so as to have a heating section having the exothermic composition molding accommodated at projected portions of an accommodation bag furnished with multiple projections and depressions, characterized in that the exothermic composition comprises, as indispensable components, an exothermic substance, a carbon component, a reaction accelerator and water, and that the heating element is composed of compartmentalized heating sections and compartmentalization sections, the compartmentalized heating sections adapted to accommodate the exothermic composition molding, the compartmentalization sections consisting of seal portion, and that the compartmentalized heating sections are disposed with compartmentalization section interposed therebetween, and that at least parts of the compartmentalized heating sections have air permeable surfaces, which air permeable surfaces brought into contact with the exothermic composition molding are constituted of a water nonadsorbent material, and that there are steps between the compartmentalized heating sections and the compartmentalization sections, which steps are covered via an adhesive layer by an air passage regulating member to thereby provide partitioned space portions, the space portions fitted with a main air inlet.

Cette invention a pour objet un élément chauffant qui assure de manière sécuritaire la présence d~un espace à la périphérie d~une composition exothermique afin de procéder à une isolation thermique de cette composition exothermique, régulant la proportion d~air entrant et prévenant la formation de moisissures. Cette invention consiste en un élément chauffant produit par superposition sur un matériau de base d~une composition exothermique à mouler capable de générer de la chaleur au contact de l~air, dont le revêtement est constitué d~un matériau de revêtement, et en réalisant un joint thermique à la périphérie de la composition exothermique à mouler de manière obtenir une section chauffante possédant une composition exothermique à mouler adaptée aux portions projetées d~une housse de rangement munie de plusieurs parties saillantes et creuses, caractérisé en ce la composition exothermique comprend, composants indispensables, une substance exothermique, un composant carbone, un accélérateur de réaction et de l~eau, et en ce que l~élément chauffant est composé de sections chauffantes compartimentées et de sections d~isolation, les sections chauffantes compartimentées étant adaptées pour recevoir la composition exothermique à mouler, les sections d~isolation consistant en une portion de fixation, et en ce les sections chauffantes compartimentées sont alternées de sections d~isolation, et en ce qu~au moins une partie des sections chauffantes compartimentées possèdent des surfaces perméables à l~air qui, en contact avec la composition exothermique à mouler, sont constituées d~une substance non absorbante, et en ce qu~il existe des écarts entre les sections chauffantes compartimentées et les sections d~isolation, ces écarts étant recouvert d~une pellicule adhésive par un élément de régulation de la circulation d~air afin de fournir des portions isolées, remplies par un conduit d~air principal.

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