| 摘要 |
The invention relates to a therapeutic heat pack comprising a heat transfer medium enclosed in a plastic cover welded on the circumference. The invention is to achieve the object of creating a heat pack, the plastic cover of which offers sufficient resistance to the bending stresses occurring on use of the pack even in the region immediately adjacent to the weld seam. This is achieved, according to the invention, in that the cover wall has several independent layers.
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