Dispensing container

Abstract

A dispensing container comprises a delaminating bottle ( 2 ) as a member for shutting off a liquid content from ambient air so that, without aid of any preservatives, a liquid residue is protected from contamination at a region adjacent to an outlet hole ( 3 a ). The container has a flexible nozzle ( 31 ) and a rod-shaped closer ( 32 ), both disposed in the mouth of bottle ( 2 ). The nozzle ( 31 ) is made of a pliable and elastic material, with the closer ( 32 ) being shaped to close a distal end region of the outlet hole ( 3 a ). By squeezing the barrel of bottle to increase its internal pressure, the flexible nozzle ( 31 ) expands to make a deformation, which in turn causes the outlet hole ( 3 a ) to take an outward open position.

1 . A dispensing container comprising a bottle, an interior bag of the bottle and a plug assembly, 
 the bottle comprising a barrel and a mouth,    the bag being containable a liquid content,    the bag being placed in the barrel of the bottle,    the bag having an outlet opening for dispensing the liquid content,    the plug assembly being disposed in the mouth of said bottle,    the outlet opening being connected to the mouth of said bottle,    the bottle having at least one vent for intake of ambient air in between the bottle and the bag,    the plug assembly comprising a nozzle having an outlet hole for dispensing the liquid content out of the bottle, and a closer capable of closing the outlet hole,    the closer being fixed in the mouth of the bottle, and    the nozzle being capable of elastic deformation away from a normal position such that the outlet hole is displaced outwards relative to the closer in response to a pressure raised in the bag and disengage from the closer.    
     
     
         2 . A dispensing container as defined in  claim 1 , wherein the closer is a rod-shaped member inserted in and closing the outlet hole, and the nozzle has an inner surface always in communication with an interior of the interior bag such that a negative pressure arising therein will force the flexible nozzle backwards toward the normal position.  
     
     
         3 . A dispensing container as defined in  claim 1 , wherein the plug assembly further comprises a sleeve made integral with the closer, the nozzle is formed of a pliable and elastic material such as a rubber, the nozzle has a cylindrical base fitted in the mouth of the bottle, and the sleeve is placed inside the base so as to press the base all around to an inner periphery of the mouth to thereby ensure an airtight and liquid-tight connection thereof with the nozzle.  
     
     
         4 . A dispensing container as defined in  claim 1 , wherein the plug assembly further comprises a sleeve made integral with the closer and fitted in the mouth of the bottle, the nozzle formed of a pliable and elastic material such as a rubber has a cylindrical base, and the base surrounds the closer and is in an airtight and liquid-tight contact with the sleeve.  
     
     
         5 . A dispensing container as defined in  claim 1 , further comprising a cap detachably mounted on the mouth of the bottle and having an inner periphery adjacent to top of the cap, wherein the periphery is substantially in conformity with upper end regions which the nozzle and the closer define in state what the cap is mounted on the mouth and the cap in the mounted state does closely contact end faces of the upper end regions.  
     
     
         6 . A dispensing container as defined in  claim 1 , wherein the barrel of the bottle is capable of elastic deformation to reduce its internal volume and to thereby compress the interior bag and elastically deform the nozzle, whereby the nozzle outlet hole thus opened will permit the liquid content to exude out therethrough, and when the barrel returns to its un-deformed normal position causing the nozzle towards its normal closed position, the vents allow ambient air to flow in between the exterior bottle and the interior bag.  
     
     
         7 . A dispensing container as defined in  claim 1 , wherein an open end of the outlet opening is closely connected all around to an open end of the mouth of the bottle.  
     
     
         8 . A dispensing container as defined in  claim 1 , wherein the outlet opening is adhered all around to an inner periphery of the mouth to thereby inhibit deformation of the adhered portion of the interior bag.  
     
     
         9 . A dispensing container as defined in  claim 1 , wherein the at least one vent is disposed in the mouth of the bottle.  
     
     
         10 . A dispensing container as defined in  claim 1 , further comprising a check valve that allows inflow of the ambient air into a clearance between the exterior bottle and the interior bag, but prevents outflow of the ambient air having entered the clearance.  
     
     
         11 . A dispensing container as defined in  claim 1 , wherein the closer is fixed in place relative to the mouth of the bottle.  
     
     
         12 . A dispensing container as defined in  claim 1 , wherein the nozzle comprises a cylindrical base fitted in the mouth, a nozzle portion having a bore as the outlet hole, and an elastically deformable intermediate portion provided between the nozzle portion and the base in a connected row arrangement such that elastic deformation of the intermediate portion displaces the outlet hole outwardly of the container.  
     
     
         13 . A dispensing container as defined in  claim 12 , wherein the elastically deformable intermediate portion is bellows-shaped.  
     
     
         14 . A dispensing container as defined in  claim 12 , wherein the elastically deforming intermediate portion is dome-shaped.  
     
     
         15 . A dispensing container as defined in  claim 1 , wherein the nozzle comprises a cylindrical base and an arc-shaped elastically deformable portion connected to an upper end of the base, the base being a double cylinder comprising a first cylindrical section and a second cylindrical section smaller than the first cylindrical section in diameter.