A water vapor adsorption and water retaining composition containing particulate calcium chloride and particulate vermiculite in a flexible container having a side of spun-bonded polyethylene heat sealed to a side of extrusion coated polyethylene on polyester. The foregoing composition can also contain...http://www.google.fr/patents/US6649086?utm_source=gb-gplus-shareBrevet US6649086 - Adsorbent compositions
