Discharging container with filter

Abstract

A discharging container with a filter capable of sucking content liquid remaining on the downstream side of the filter to the upstream side of the filter, capable of accurately dripping the content liquid while avoiding an air lock state, and manufacturable at reduce cost, particularly in an instillation vial, comprising a bottle formed by laminating an inner layer separable from an outer layer on the inner surface of the outer layer and a plug body fitted to the mouth part of the bottle. A discharging passage for discharging the content liquid stored in the body part of the inner layer is formed in the plug body, and the filter is installed in the discharging passage. The inner layer has a restoring property to expand so that a pressure difference between an internal negative pressure and the atmospheric pressure is increased larger than filtration resistance of the filter, a negative pressure is produced in the inner layer by the recovering property of the inner layer, and the liquid remaining on the secondary side of the filter is sucked to the primary side of the filter.

1 . A discharging container with a filter comprising: 
 a bottle which is formed in a manner wherein an inner layer peelable from an outer layer is formed on an inner surface of the outer layer;    a plug body placed on a mouth portion of the bottle; and    a filter provided in a discharging pass which is provided in the plug body for discharging liquid kept in a body of the inner layer provided;    wherein said inner layer has a memory which expands the inner layer in a manner wherein a difference between an inner negative pressure and an ambient air is higher than a filtration resistance of the filter; and    wherein the negative pressure is caused by the memory of the inner layer and by that liquid remained in a second side of the filter is sucked into a primary side of the filter.    
   
   
       2 . A discharging container with a filter as set forth in  claim 1 , wherein said filter has hydrophilicity.  
   
   
       3 . A discharging container with a filter as set forth in  claim 1 , wherein said bottle does not have an outer layer.