PURPOSE: To make a bag mouth possible to close tight without staining hands by providing at least a pair of string taking out ports on the periphery of a string through bag, and exposing a part of two pieces of mouth closing loop strings from the string taking out ports, and pulling the mouth closing loop strings in mutually opposite directions.
CONSTITUTION: A bag body 1 is formed by drawing out a low density thermal fusible tube to form a bottom seal 3 and cutting the tube into each bag, and a bag mouth 6 is formed by folding back a cut end inward and overlapping it, and a string through bag 9 is formed by thermally fusing the overlapped end. In addition, a pair of bay-shaped recesses 10, 10 is previously oppositely provided on the periphery of the cut end, and the peripheral spots of the string through bag 9 corresponding to the above recesses are set up as a pair of string taking out ports 11, 11. Two pieces of mouth closing loop strings 2, 2 made of a ribbon-shaped plastic film are passed through the string through bag 9. In the collecting bag, the mouth closing loop strings 2, 2 are pulled mutually oppositely to slenderly wring the bag mouth 6 for forming a closed mouth state.
MORIWAKI TOSHIAKI
WADA MASAKI
| JP4125201B2 | 2008-07-30 | |||
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