Squeeze Bottle and Eye Dropper Using the Same

Abstract

To provide a squeeze bottle with reduced pressing force required to delivery a liquid, and particularly a squeeze bottle wherein the pressing force is reduced to such an extent that allows easy control of the discharge of liquid drops even when a valve operated by the liquid pressure is provided. In a squeeze bottle comprising the bottle body 10 for containing a liquid, and a neck 11 that leads to the opening end 10 a of the bottle body 10 , the bottle body 10 has a bellows 12 which is contracted and expanded in the direction y generally perpendicular to the direction x of delivering liquid. The bellows 12 has a plurality of pleated portions 13 disposed in the direction of delivery x. The pleated portions 13 are disposed at intervals in the direction of contraction y. Further, the width of the convex edge of the pleated portion 13 in the direction of width Z, that is, the distance between the both edges 14 , is made to decrease from the middle to the both ends in the direction of contraction y. With respect to the concave edge of the pleated portion 13 , the distance between the both edges 18 in the direction of width z is also made to decrease from the middle to the both ends in the direction of contraction y.

1 . A squeeze bottle comprising a bottle body for containing a liquid, and a neck that leads to an opening end of the bottle body,
 wherein the bottle body has a bellows that contracts and expands in a direction generally perpendicular to the direction of delivery of the liquid that is discharged through the neck,   the bellows has a plurality of pleated portions disposed in the direction of delivery,   each of the pleated portions is disposed at intervals from each other in the direction of contraction,   a width of the pleated portion at a convex edge in a direction perpendicular to the direction of contraction is made to decrease from a middle to both ends in the direction of contraction, and   a width of the pleated portion at a concave edge in the direction perpendicular to the direction of contraction is made to decrease from the middle to the both ends in the direction of contraction.   
   
   
       2 . The squeeze bottle according to  claim 1 ,
 wherein the both edges at the convex edges of the pleated portion in the direction perpendicular to the direction of contraction are disposed generally along a circle when viewed in the direction of delivery, and   the both edges at the concave edges of the pleated portion in the direction perpendicular to the direction of contraction are disposed along a generally concentric circle of a radius smaller than that of the former circle when viewed in the direction of delivery.   
   
   
       3 . The squeeze bottle according to  claim 1 ,
 wherein the bottle body has a cylindrical portion that adjoins the bellows in the direction of delivery,   the both edges at the convex edges of the pleated portion in the direction perpendicular to the direction of contraction are disposed along a circumferential surface of the cylindrical portion when viewed in the direction of delivery, and   the both edges at the concave edges of the pleated portion in the direction perpendicular to the direction of contraction are disposed along a generally concentric circle of a radius smaller than the circumference of the cylindrical portion when viewed in the direction of delivery.   
   
   
       4 . The squeeze bottle according to  claim 1  that is formed by blow molding. 
   
   
       5 . The squeeze bottle according to  claim 1 , which is provided with a delivery member that is connected detachably to the neck and has a valve operated by liquid pressure. 
   
   
       6 . An eye dropper that utilizes the squeeze bottle according to  claim 1 .