Improved expanded ptfe floss material and method of making same

A - Human Necessities – 61 – C

Patent

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A61C 15/04 (2006.01) D01D 5/42 (2006.01)

Patent

CA 2163437

The present invention is an expanded polytetrafluoroethylene (PTFE) floss with improved handling properties. Unlike previous expanded PTFE flosses, the floss of the present invention employs a fiber of increased thickness so that the floss is maintained in an unfolded orientation. The improved processing steps of the present invention create a floss that has a number of improved properties, including more uniform dimensions along its length, improved compressibility and handling, and automatic visual indication of those segments of the floss that have been used.

La présente invention concerne un fil dentaire en fibres expansées de PTFE (polytetrafluoroéthylène), qui est plus efficace et plus facile à utiliser. Par comparaison avec les fils dentaires en PTFE de la technique antérieure, le fil dentaire de la présente invention fait appel à une fibre plus épaisse, de sorte que le fil conserve sa forme lorsqu'il est déroulé. Le procédé de fabrication amélioré de la présente invention fournit un fil dentaire ayant un certain nombre d'améliorations de ses propriétés, en particulier une épaisseur plus uniforme suivant la longueur, une meilleure compressibilité, une plus grande facilité d'utilisation et le fait qu'il permet de distinguer visuellement les parties qui ont servi.

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