Sumitomo Seika Chemicals Co., Ltd.

Katsuya Fujishiro

Masato Kotake

Kazuo Fujii

Ryota Sato

Hiromichi Nishimori

A packaging bag for packaging water-absorbent resin powder includes a resin sheet with gas barrier properties which is formed in a bag shape having a charge opening for charging the water-absorbent resin powder into the packaging bag. At least one resin sheet piece of the resin sheet is provided with an incision penetrating the resin sheet piece in a thickness direction thereof, the incision having a dimension not larger than a predetermined length according to a mass median particle size of the water-absorbent resin powder.

Packaging bag and packaged product

Provided is a conveyor such that, after stopping or restricting supply of granular material to a downstream device, it is possible to restart normal operation of conveying the granular material without delay. This conveyor includes: a casing having a conveying path of a granular material therein and having a discharge port for discharging the granular material to a downstream device; a plurality of conveying units accommodated in the casing and configured to convey the granular material to the discharge port by circulating along the conveying path; an opening/closing mechanism that opens and closes the discharge port; and a control unit that controls operation of the plurality of conveying units and the opening/closing mechanism. When restricting supply of the granular material to the downstream device, the control unit controls the opening/closing mechanism to close the discharge port, and continues to circulate the plurality of conveying units, thereby continuing to move the granular material along the conveying path.

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Himeji, Japan

Katsuya Fujishiro