Dosing valve for a fluid product dispenser

Abstract

A metering valve for a fluid dispenser, the metering valve having a valve body that defines a metering chamber in which a valve member slides between a rest position and an actuated position, the valve body and/or the valve member being made by injection-molding a material having a PBT matrix and glass microspheres dispersed in said PBT matrix.

1 . A metering valve for a fluid dispenser, the metering valve comprising a valve body that defines a metering chamber in which a valve member slides between a rest position and an actuated position, the metering valve being characterized in that said valve body and/or said valve member is/are made by injection-molding a material comprising a PBT matrix and glass microspheres dispersed in said PBT matrix. 
     
     
         2 . A valve according to  claim 1 , wherein said glass microspheres have a diameter lying in the range 1 μm to 2000 μm, advantageously in the range 1 μm to 100 μm. 
     
     
         3 . A valve according to  claim 1 , wherein said glass microspheres are added to the PBT matrix at a content lying in the range 1% to 20% by weight, advantageously in the range 1% to 15% by weight. 
     
     
         4 . A fluid dispenser comprising a reservoir ( 1 ) containing fluid to be dispensed, said dispenser being characterized in that it further comprises a metering valve according to  claim 1 . 
     
     
         5 . A dispenser according to  claim 5 , containing an HFA gas as a propellant gas.