Multilayered sterilizable deep-drawn foil, and deep-drawn vacuum packaging to receive plastic pouches containing a perfusion solution produced thereof

摘要

The deep-drawn foil, which is used as under-foil of a vacuum deep-drawn pack (2), with plastic bag (5) containing blood infusion fluid packed therein, together with an upper foil (3) known per se, is a coextruded composite foil (1') having two same-material and same-thickness outer plies (A, A') of polypropylene, a copolymer of propylene or of high-density polyethylene and two same-material and same-thickness inner plies (B, B') of an ethylene-vinyl acetate copolymer; the outer plies (A, A') are bonded to the inner plies (B, B') by fusion, whereas the inner plies (B, B') are merely interlocked. IMAGE