초록 ▼

The present invention relates to disposable thermal packs comprising a unified structure having at least one continuous layer of a semirigid material which softens when heated. The thermal packs also comprise a plurality of individual heat cells, which typically comprise an exothermic composition, s

The present invention relates to disposable thermal packs comprising a unified structure having at least one continuous layer of a semirigid material which softens when heated. The thermal packs also comprise a plurality of individual heat cells, which typically comprise an exothermic composition, spaced apart and fixedly attached across the unified structure. The material of the continuous layer or layers provide sufficient rigidity to maintain structural support of the heat cells, to prevent unacceptable stretching of structures of the continuous layer or layers during processing or use of the thermal packs, and to ensure child resistance, while also providing good overall drape characteristics when heated. The thermal packs, when incorporated into body wraps, pads, and the like, provide uniform heat coverage by having excellent conformity with various body forms.

대표청구항 ▼

[ What is claimed is:] [1.] A disposable thermal pack having a unified structure comprising:a.) at least one continuous layer of a coextruded material having a first side of polypropylene and a second side of a low melt temperature copolymer, wherein said continuous layer is semirigid having at leas

[ What is claimed is:] [1.] A disposable thermal pack having a unified structure comprising:a.) at least one continuous layer of a coextruded material having a first side of polypropylene and a second side of a low melt temperature copolymer, wherein said continuous layer is semirigid having at least two dimensional drape at a temperature of about 25.degree. C. and substantially less rigid having at least three dimensional drape at a temperature of about 45.degree. C.; andb.) a plurality of individual heat cells spaced apart and fixedly attached to at least one of said at least one continuous layer to form said unified structure of said thermal pack.