US 12,234,333 B2
Water-soluble film and package
Minoru Okamoto, Okayama (JP); Sayaka Shimizu, Okayama (JP); and Osamu Kazeto, Okayama (JP)
Assigned to KURARAY CO., LTD., Okayama (JP)
Filed by KURARAY CO., LTD., Okayama (JP)
Filed on Jun. 28, 2021, as Appl. No. 17/359,991.
Application 17/359,991 is a continuation of application No. PCT/JP2019/051488, filed on Dec. 27, 2019.
Claims priority of application No. 2018-248287 (JP), filed on Dec. 28, 2018.
Prior Publication US 2021/0324158 A1, Oct. 21, 2021
Int. Cl. C08J 5/18 (2006.01); A01N 25/10 (2006.01); A01N 25/34 (2006.01); B65D 65/46 (2006.01); C11D 3/37 (2006.01); C11D 17/04 (2006.01)
CPC C08J 5/18 (2013.01) [A01N 25/10 (2013.01); A01N 25/34 (2013.01); B65D 65/46 (2013.01); C11D 3/3753 (2013.01); C11D 17/042 (2013.01); C08J 2329/04 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A water-soluble film having a surface roughness, comprising a polyvinyl alcohol resin,
wherein the water-soluble film has a mat surface and a glossy surface, wherein the glossy surface has an average height SRc(G) of 1.8 μm or less and a maximum height SRz(G) of 20 μm or more and 50 μm or less, and the mat surface has an average height SRc(M) of 1 μm or more and 5 μm or less and a maximum height SRz(M) of 20 μm or more and 80 μm or less, and
wherein the average heights SRc(G) and SRc(M) and the maximum heights SRz(G) and SRz(M) indicating the surface roughness are measured in a 200 μm×200 μm area of the water-soluble film using a laser microscope.