Double functional hot-water bottle, has plastic foils, in which one foil is connected with heat-resistant waterproof material such that sealing ring seals recesses, and rubber casing serving as heat insulation and laid over safety ring

摘要

The bottle has a filling ring (3) comprising a flange, and a sealing ring (4) arranged around the flange. Two double-sided adhesive plastic foils (5, 6) are adhered to inner and outer sides of the sealing ring. The rings are stuck together by the foils, such that the rings are not separated from each other. One of the foils is connected with a heat-resistant waterproof material (7), such that the ring (4) seals recesses formed through the folding of the material and temperature changes of a safety ring (8). A rubber casing (9) serving as heat insulation is laid over the safety ring.