This case is a plastic cold and hot packing bag, which has a soft airtight bag body without water seepage, a plurality of granular supports filled in the bag body, each of which has at least one pore, and the liquid is injected into the bag body to make the liquid filled and contained in the pores of the granular supports, so that the bag body becomes a negative pressure state, and then the granular supports are made Props and liquids are fixed by atmospheric pressure without sagging.This case can be widely used in cold and hot pad, cushion, water bed, bedsore prevention mattress, thermal insulation pad and other items in different fields, but it greatly exceeds the function and quality of these familiar products.本案係一種可塑形的冷熱敷袋，其具有一不滲水之軟質密閉袋體，複數個裝填於該袋體內之顆粒狀支撐物，各顆粒狀支撐物具有至少一孔隙，另將液體注入袋體內，使液體充斥與容納於該等顆粒狀支撐物之孔隙內，使該袋體內部成為負壓狀態，進而使該等顆粒狀支撐物及液體及被大氣壓力壓迫固定而不會垂流。本案可廣泛應用於冷熱敷墊、坐墊、水床、防褥瘡床墊、保溫墊等不同領域物品，卻又大幅超越該等習知產品之功能與品質。
