Process for producing bactericidal/fungicidal plastic bodies

Details Process for producing bactericidal/fungicidal plastic bodies Process for producing bactericidal/fungicidal plastic bodies

A - Human Necessities

61

L

A61L 29/10 (2006.01) A61L 29/16 (2006.01) C08J 7/04 (2006.01)

Patent

CA 2182390

Objects for use in medical application that are produced from plastics required to have an antimicrobially effective content of metals (or metal compounds) can be produced inexpensively by coating a plastic blank in the form of film, granules or fibers with the desired metal (or metal compound) according to the methods used in thin-film technology. The thus obtained intermediate is subsequently comminuted and mixed and, as the starting product for the desired final form, further processed. As a result, these objects are antimicrobially effective on every area of their surface, i.e. also on internal surfaces. The amount necessary for full effectiveness of the antimicrobially active substances, which in the case of the subject-matter of this invention are oligodynamically active metals (or metal compounds), is only a small percentage of that necessary when they are introduced into the plastic in the form of powder, which fact results in considerable financial advantages.

Des articles en matière plastique à usage médical, qui doivent présenter une teneur en métaux (ou en composés métalliques) à activité antimicrobienne, peuvent être fabriqués économiquement par enduction d'une ébauche en matière plastique, sous forme de feuille, granulé ou fibre avec le métal (ou le composé métallique) désiré, suivant les méthodes utilisées en technique des couches minces. Le produit intermédiaire ainsi obtenu est ensuite broyé et mélangé, puis transformé en tant que matériau brut, pour être amené à la forme finale désirée. De tels articles acquièrent ainsi une activité antimicrobienne en toute zone de leurs surfaces, y compris leurs surfaces internes. La pleine activité des substances antimicrobiennes, dans le cas présent, des métaux (ou des composés métalliques) oligodynamiquement actifs, est obtenue avec seulement une faible fraction des quantités antérieurement requises qui étaient contenues dans la matière plastique sous forme pulvérulente, ce qui se traduit par un coût considérablement réduit.

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