The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 29, 2025
Filed:
Jun. 28, 2021
Applicant:
Kuraray Co., Ltd., Okayama, JP;
Inventors:
Assignee:
KURARAY CO., LTD., Okayama, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08J 5/18 (2006.01); B65D 65/46 (2006.01); C11D 17/04 (2006.01);
U.S. Cl.
CPC ...
C08J 5/18 (2013.01); B65D 65/46 (2013.01); C11D 17/042 (2013.01); C08J 2329/04 (2013.01);
Abstract
Provided are a water-soluble film capable of maintaining good mechanical strength even when packaging a liquid detergent and the like while maintaining excellent water solubility of the water-soluble film and a package using the same. A water-soluble film of the present invention includes a polyvinyl alcohol resin. When a crystallinity index calculated for a first surface is Fd1 and a crystallinity index calculated for a second surface opposed to the first surface is Fd2 for FT-IR measurement of respective two surfaces of the water-soluble film by ATR technique using a diamond prism, the Fd1 and the Fd2 are 0.22≤Fd1≤0.72, 0.2≤Fd2≤0.65 and Fd1/Fd2≥1.1.