| http://www.w3.org/ns/prov#value | - The inventive backing layers according to the invention may include a variety of components which together form hydrophilic and non-hydrophilic regions that yield a backing layer that is dissolvable when exposed to moisture and that inhibits or slows the migration of water, drugs or other molecules therethrough compared to a backing layer that does not include the non-hydrophilic region.
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