| 摘要 |
A triggering element (15) for a portable heat pack having a sealed bag (11) capable of transferring heat and a sodium acetate solution that generate a crystallization heat contained in said sealed bag (11). The triggering element (15) comprises a thin, flexible strip of stainless steel; the strip having an oval shape with the length and a center portion (18) formed in a bowl-shaped configuration with one surface depressed inward to form a concave shape surface and the convex surface opposite side with a protruded surface, and the depth of the center portion (18) depressed inward. The strip has an the outer annular portion (19) and a plurality of slits (17) cut through said center portion (18). <IMAGE> |
