C - Chemistry – Metallurgy – 09 – J
Patent
C - Chemistry, Metallurgy
09
J
C09J 7/02 (2006.01) A61F 13/02 (2006.01)
Patent
CA 2705240
The invention relates to a protective or process film, produced of a thermoplastic material for use in the production of laminates of medical technology and to a laminate which comprises an adhesive-containing transdermal therapeutic system and a protective or process film adhering to the adhesive of the transdermal therapeutic system with a surface. The protective or process film comprises at least one surface that has a plurality of recesses and/or a plurality of non-recessed portions. The distance of two adjacent recesses and/or the distance of two adjacent non-recessed portions is less than five times the film thickness. The depth of the recesses is not less than 1.2 nanometer and not more than 95% of the film thickness. The film according to the invention effectively prevents the adhesive from sticking to the protective or process film.
L'invention concerne un film de protection ou de traitement en matériau thermoplastique destiné à la fabrication de produits stratifiés médicamenteux, ainsi qu'un produit stratifié qui comprend un système transdermique doté d'un adhésif auquel adhère une face d'un film de protection ou de traitement. En outre, le film de protection ou de traitement comporte au moins une face qui présente une pluralité d'évidements et/ou une pluralité de zones non évidées. L'espace séparant deux évidements voisins et/ou deux zones non évidées voisines est inférieur au quintuple de l'épaisseur du film. En outre, la profondeur des évidements est d'au moins 1,2 nanomètre et d'au maximum 95 % de l'épaisseur du film. L'invention permet d'éviter efficacement l'adhésion d'un adhésif avec le film de protection et de traitement.
Fetherstonhaugh & Co.
Lts Lohmann Therapie-Systeme Ag
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