Patent ID: 9579671
Date: 2017-02-28
CPC Classifications: A61F,B05B,B65D

Claim:
1. A liquid dispensing tip for mounting on a container, said tip comprising a valve which, in rest position, seals off the container by separating an upstream volume from a downstream volume, said valve being able to withstand opening manoeuvres by elastic deformation, said valve comprising a support and a membrane that is mobile in relation to the support, each of the support and the membrane including a bearing zone against each other, arranged so that, when the valve is in rest position, the bearing zones of the support and the membrane bear at least partially against one another forming a surface barrier separating the upstream volume from the downstream volume, at least one of the support or the membrane being such that after one or several opening manoeuvres, said surface barrier no longer covers the same part of the bearing zone of at least one of the support or the membrane, said tip further comprising an antimicrobial material on the membrane, the anti-microbial material being only on the bearing zone of the membrane or on the membrane in the immediate proximity of its bearing zone, such that the entire surface of the dispensing tip in contact with the upstream volume when the valve is in rest position is free of anti-microbial material, wherein the membrane comprises an inner portion and an outer portion, wherein the outer portion includes the anti-microbial material and the inner portion is free of antimicrobial material, the outer portion surrounding a distal end of the inner portion and contacting the support in the bearing zone.