Rollprint Packaging Products, Inc. has developed NutraSeal, a packaging film that offers sensitive neutraceuticals moisture vapor barrier in a transparent structure. The NutraSeal composite features an aluminum-oxide coated polyester film that is coextrusion coated with a blended polyolefin sealant layer. The resulting structure offers excellent clarity for product visibility and moisture barrier protection, which is unaffected by the ambient humidity level. By comparison, many materials used for moisture barrier applications are ineffective at high humidity levels. The aluminum-oxide coated polyester provides the necessary moisture vapor barrier. Rollprint refined its manufacturing process to ensure that the barrier coating could withstand the thermal shock and other stresses that may be generated during the extrusion coating process.

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