| 摘要 |
<p>A hydratable packet pad (10) comprising a series of spaced, packet cells (17) made up of an impervious plastic backing sheet (11), e.g., polyester film, and an upper, porous, water permeable sheet (12) of e.g., non-woven polypropylene without any additive(s), with a tacky sealant (13), [e.g., 22.5 % ethylene-methyl-acrylate (EMA)], used to affix and seal the two sheets in a process forming cells and initially hold polymer powder in the cell areas, which is initially deposited on the film in a squat cone, prior to the cells being formed. The polymer is a superabsorbent polymeric material (14) of a multiply-cross-linked polymer, e.g., a doubly cross-linked sodium polyacrylate polymer. The superabsorbent material preferably includes no alcohol (OH) functional groups and is particularly effective in absorbing water, and the sheeting materials preferably contain no cellulose materials. The pad is used to control temperature, e.g., by being dipped in water and frozen.</p> |
