Spout, spout and cap assembly, and spouted pouch

Abstract

A spout is put between and attached to a pair of plane parts including front and rear surfaces forming a bag body. The spout includes a tube part to which a cap having a tamper-proof ring is attached on its topside, and a first flange and a second flange provided on an outer peripheral surface of the tube part on the side of its base end. The outer diameter of the first flange, which is the topmost, is equal to or larger than the outer diameter of the tamper-proof ring in a front-rear direction of the bag body. This causes the first flange to cover the whole lower part of the tamper-proof ring.

1 . A spout put between and attached to a pair of plane parts comprising front and rear surfaces forming a bag body, the spout comprising:
 a hollow and tubular tube part; and   a flange part comprising a plurality of flanges provided on an outer peripheral surface of the tube part on a side of a base end thereof,   wherein a cap having a cap body and a tamper-proof ring connected to the cap body is attached to the tube part on a topside thereof,   wherein the tamper-proof ring circumferentially splits into a plurality of pieces with the connection to the cap body partially maintained, and   wherein a topmost top flange of the plurality of flanges is equal to or larger than the tamper-proof ring in outer diameter in a front-rear direction of the bag body.   
     
     
         2 . The spout according to  claim 1 , wherein the top flange has two straight sections parallel to the pair of plane parts. 
     
     
         3 . The spout according to  claim 1 , wherein a base-end flange nearer the base end than the top flange is shorter than the top flange in length in the front-rear direction of the bag body. 
     
     
         4 . The spout according to  claim 1 , wherein the base-end flange nearer the base end than the top flange is formed with a hollow in a direction parallel to the pair of plane parts. 
     
     
         5 . The spout according to  claim 1 , wherein the flange part having the plurality of flanges comprises the two flanges, namely, the top flange and the base-end flange nearer the base end than the top flange. 
     
     
         6 . A spout and cap assembly comprising:
 the spout according to  claim 1 ; and   a cap having a cap body and a tamper-proof ring connected to the cap body, the cap being attached to a tube part of the spout on a topside thereof.   
     
     
         7 . A spouted pouch comprising:
 a bag body formed of a pair of plane parts comprising front and rear surfaces;   the spout according to  claim 1  put between and attached to the pair of plane parts; and   a cap having a cap body and a tamper-proof ring connected to the cap body, the cap being attached to a tube part of the spout on a topside thereof.