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Abstract

A lid sheet for use in a blister form pack for packaging of pharmaceutical and medical products, wherein said lid sheet is a laminate comprising four layers A, B, C and D with the layer sequence A-B-C-D and the layers comprising as follows: (Layer A) a layer A material selected from the group consisting of cellulose material; aluminium foil; plastic film with a temperature resistance of at least 1 second at 220.degree. C.; lacquer with a temperature resistance of at least 1 second at 220.degree. C.; and anti-adhesive coating; (Layer B) a layer B material selected from the group consisting of: (1) at least two non-orientated, mono-orientated or biaxially orientated plastic films displaced at an angle and bonded by means of lamination or hot calendaring or plastic coating with a net-like structure; (2) non-woven material made from a plastic polymer; (3) at least one fibre or a plastic film possessing a net-like web; (4) a foil comprising a material selected from the group consisting of Polysulfone, Polyethylenenaphthalate PEN, polyphenylsulfone (PPSU), polyimide (PI); Polyetherimide (PEI) and Tetrafluoroethylene/ethylene; and (5) a multilayer foil consisting of at least two of the aforementioned materials; (Layer C) aluminium foil; and (Layer D) a heat seal layer.

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First Claim