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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.:

US 12753555 B1

PDFFull Text
Date of Patent:
Oct. 06, 2026

Filed:

Dec. 08, 2021

Polylactide formulation for improved extrusion processing

Applicant:

Westrock Mwv, Llc, Atlanta, GA (US);

Inventors:

Rahul Bhardwaj, Glen Allen, VA (US);

Chitai C. Yang, Glen Allen, VA (US);

Justin L. Bennett, Richmond, VA (US);

Courtney R. Johnson, Midlothian, VA (US);

Assignee:

WestRock MWV, LLC, Atlanta, GA (US);

Attorneys:

Neil G. Cohen

Rohini K. Garg

Primary Examiner:

James C Yager

Int. Cl.
CPC ...
D21J 1/08 (2006.01); B32B 1/00 (2006.01); B32B 27/10 (2006.01); B32B 27/18 (2006.01); B32B 27/36 (2006.01); B65D 65/42 (2006.01); B65D 65/46 (2006.01); C09D 7/61 (2018.01); C09D 167/04 (2006.01); D21H 19/40 (2006.01); D21H 19/62 (2006.01); D21H 19/84 (2006.01); D21H 23/48 (2006.01);
U.S. Cl.
CPC ...
D21J 1/08 (2013.01); B32B 1/00 (2013.01); B32B 27/10 (2013.01); B32B 27/18 (2013.01); B32B 27/36 (2013.01); B65D 65/42 (2013.01); B65D 65/466 (2013.01); C09D 7/61 (2018.01); C09D 167/04 (2013.01); D21H 19/40 (2013.01); D21H 19/62 (2013.01); D21H 19/84 (2013.01); D21H 23/48 (2013.01); B32B 2250/02 (2013.01); B32B 2264/102 (2013.01); B32B 2270/00 (2013.01); B32B 2307/31 (2013.01); B32B 2307/716 (2013.01); B32B 2439/02 (2013.01);
Abstract

A paperboard structure includes a paperboard substrate having a first surface and an opposed second surface. A biopolymer coating is applied by extrusion or co-extrusion to at least one of the first surface and the second surface. The biopolymer coating includes an inorganic melt curtain stabilizer, a polylactide resin having a melt flow index, and an organic polymeric chain extender.

Find Patent Forward Citations

Bhardwaj, Rahul. (2026). Polylactide formulation for improved extrusion processing (U.S. Patent No. 12753555). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/12753555

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

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