Preform for blow-molding container comprises multi-layers of two surface polymeric layers containing additive and intermediate polymeric layer, whose center surface is directed outside with respect to center surface of wall

摘要

A preform comprises a neck (l0), adjoining cylindrical wall (20), and a bottom section (30), which comprises multi-layer structure, consisting of inner and outer surface layers (1, 3) composed of a primary material containing predetermined quantity of additives; and an intermediate layer (2) composed of a secondary material, where center surface of intermediate layer is directed toward the outside with respect to center surface of wall. The intermediate layer comprises hydrophobic polymers incorporating living organisms and/or cell products. An independent claim is included for producing the preform in an injection molding mold.