Paper container for fluid having spout plug

摘要

A paper container for fluid having a spout plug, in which the spout plug ( 16 ) formed of a spout ( 14 ) positioned on a spout hole part for cutting and opening ( 12 ) and incorporating a rotary opening blade ( 13 ) and a cap ( 15 ) is fitted to a top panel ( 9 ) having the spout hole part for cutting and opening ( 12 ) in which a spout hole ( 10 ) formed in a paper base material ( 3 ) is sealed by a sealing layer ( 11 ), and a cut and opened piece fall prevention mechanism ( 26 ) capable of preventing a part of the cut and opened piece ( 11 a) of the sealing layer ( 11 ) produced when the sealing layer ( 11 ) is cut and opened by the rotary opening blade ( 13 ) of the spout plug ( 16 ) from being cut off and giving hinge function to the uncut part of the cut and opened piece in the spout hole part for cutting and opening ( 12 ). Thus, the cut and opened piece ( 11 a) produced when the sealing layer ( 11 ) is cut and opened by the rotary opening blade ( 13 ) of the spout plug ( 16 ) can be prevented by the uncut part from being fallen into the container. Also, since the cut and opened piece ( 11 a) is pressed to be bent by the rotary opening blade ( 13 ) by using the uncut part as a hinge, the spout hole ( 10 ) can be prevented from being clogged by the cut and opened piece ( 11 a).