US 11,667,457 B2
Packaging bag and packaged product
Masato Kotake, Hyogo (JP); Katsuya Fujishiro, Hyogo (JP); and Hiromichi Nishimori, Hyogo (JP)
Assigned to SUMITOMO SEIKA CHEMICALS CO., LTD., Hyogo (JP)
Appl. No. 15/557,218
Filed by Sumitomo Seika Chemicals Co., Ltd., Hyogo (JP)
PCT Filed Mar. 24, 2016, PCT No. PCT/JP2016/059449
§ 371(c)(1), (2) Date Sep. 11, 2017,
PCT Pub. No. WO2016/158689, PCT Pub. Date Oct. 6, 2016.
Claims priority of application No. JP2015-070322 (JP), filed on Mar. 30, 2015.
Prior Publication US 2018/0037391 A1, Feb. 8, 2018
Int. Cl. B65D 81/26 (2006.01); B65D 33/01 (2006.01); B01J 20/26 (2006.01); B01J 20/28 (2006.01); B65D 65/38 (2006.01); B65D 77/04 (2006.01); B65D 88/74 (2006.01)
CPC B65D 81/264 (2013.01) [B01J 20/26 (2013.01); B01J 20/28004 (2013.01); B65D 33/01 (2013.01); B65D 65/38 (2013.01); B65D 77/04 (2013.01); B65D 88/74 (2013.01)] 4 Claims
OG exemplary drawing
 
1. A packaged product, comprising:
a package composed of a packaging bag for packaging water-absorbent resin powder having a mass median particle size of 150 μm or more, the packaging bag including:
a resin sheet forming an outermost surface of the packaging bag and forming a water-absorbent resin powder holding area, the resin sheet having gas barrier properties which is formed in a bag shape having an opening,
an incision having a length of 0.5 mm or less being provided in the resin sheet so as to penetrate through the resin sheet in a thickness direction thereof that directly communicate with the water-absorbent resin powder holding area,
wherein air present in the packaging bag together with the water-absorbent resin powder can be released to the outside of the packaging bag through the incision,
wherein the incision is provided at a position distant from an outer peripheral edge in a plan view of the packaging bag, and water-absorbent resin powder packaged with the packaging bag; and
an outer bag formed of kraft paper with gas permeability and a plurality of incisions through the outer bag and storing the package.