| 摘要 |
The present invention relates to a tamper-evident push-through packaging secured against fraudulent reuse comprising: - a polymer base web (1) comprising at least one pocket;- a multilayer lidding film (2) covering the pocket, the multilayer lidding film (2) comprising on its seal side a coextruded polymer film, the the coextruded polymer film comprising a push-through polymer layer (3) sealed on the base web by a permanent seal and a peelable protective polymer layer (4), the polymers of both layers (3,4) being incompatible and in direct contact with each other, without interlayer, the adhesion between the push-through polymer layer (3) and the peelable protective polymer layer (4) being lower than the seal strength between the polymer base web (1) and the push-through polymer layer (3), wherein, in use, the push-through layer leaves a seal seam (6), after removing the part of the push-through layer (3) covering the pocket and wherein the protective layer (4) cannot be resealed by a heat sealing process on the seal seam (6).
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