US 9,809,365 B2
Water-soluble film, packaging bag, content release body, and method for producing water-soluble film
Yuuki Yonezawa, Aichi (JP); and Yuki Yasui, Aichi (JP)
Assigned to AICELLO CORPORATION, Aichi (JP)
Appl. No. 15/510,421
Filed by AICELLO CORPORATION, Toyohashi-shi, Aichi (JP)
PCT Filed Sep. 8, 2015, PCT No. PCT/JP2015/075384
§ 371(c)(1), (2) Date Mar. 10, 2017,
PCT Pub. No. WO2016/039303, PCT Pub. Date Mar. 17, 2016.
Claims priority of application No. 2014-186708 (JP), filed on Sep. 12, 2014.
Prior Publication US 2017/0259975 A1, Sep. 14, 2017
Int. Cl. B65D 65/46 (2006.01); B65D 65/02 (2006.01); C08J 5/18 (2006.01); C08K 3/30 (2006.01)
CPC B65D 65/46 (2013.01) [B65D 65/02 (2013.01); C08J 5/18 (2013.01); C08K 3/30 (2013.01); C08J 2329/04 (2013.01); C08K 2003/309 (2013.01)] 19 Claims
OG exemplary drawing
 
1. A water-soluble film prepared by film-forming a raw material comprising a polyvinyl alcohol-based resin and a bisulfite,
wherein the polyvinyl alcohol-based resin comprises at least one anionic group-modified PVA-based resin selected from the group consisting of a maleic acid-modified PVA-based resin, an itaconic acid-modified PVA-based resin, an acrylic acid-modified PVA-based resin, and a methacrylic acid-modified PVA-based resin.