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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 12138890 B1

PDFFull Text
Date of Patent:
Nov. 12, 2024

Filed:

Oct. 18, 2022

Multilayer biodegradable film

Applicant:

Novamont S.p.a., Novara, IT;

Inventors:

Roberto Ponti, Marano Ticino, IT;

Claudio Russo, Novara, IT;

Assignee:

NOVAMONT S.P.A., Novara, IT;

Attorney:

POLSINELLI PC

Primary Examiner:

Michael C Romanowski

Int. Cl.
CPC ...
B32B 27/08 (2006.01); A01G 13/02 (2006.01); B32B 7/04 (2019.01); B32B 27/18 (2006.01); B32B 27/20 (2006.01); B32B 27/22 (2006.01); B32B 27/28 (2006.01); B32B 27/30 (2006.01); B32B 27/32 (2006.01); B32B 27/34 (2006.01); B32B 27/36 (2006.01); B32B 27/40 (2006.01); B32B 27/42 (2006.01); C08J 5/18 (2006.01); C08L 67/02 (2006.01);
U.S. Cl.
CPC ...
B32B 27/08 (2013.01); A01G 13/0275 (2013.01); B32B 7/04 (2013.01); B32B 27/18 (2013.01); B32B 27/20 (2013.01); B32B 27/22 (2013.01); B32B 27/285 (2013.01); B32B 27/302 (2013.01); B32B 27/304 (2013.01); B32B 27/306 (2013.01); B32B 27/308 (2013.01); B32B 27/32 (2013.01); B32B 27/34 (2013.01); B32B 27/36 (2013.01); B32B 27/365 (2013.01); B32B 27/40 (2013.01); B32B 27/42 (2013.01); C08J 5/18 (2013.01); C08L 67/02 (2013.01); B32B 2250/24 (2013.01); B32B 2264/10 (2013.01); B32B 2264/102 (2013.01); B32B 2264/104 (2013.01); B32B 2270/00 (2013.01); B32B 2307/21 (2013.01); B32B 2307/3065 (2013.01); B32B 2307/50 (2013.01); B32B 2307/5825 (2013.01); B32B 2307/7163 (2013.01); B32B 2307/732 (2013.01); B32B 2439/70 (2013.01); B32B 2553/00 (2013.01); C08J 2367/02 (2013.01); C08J 2403/02 (2013.01); C08J 2425/14 (2013.01); C08J 2467/02 (2013.01); C08J 2467/04 (2013.01); C08L 2201/06 (2013.01); C08L 2203/16 (2013.01); C08L 2205/025 (2013.01); C08L 2205/03 (2013.01); C08L 2205/035 (2013.01); C08L 2310/00 (2013.01); Y10T 428/1334 (2015.01); Y10T 428/1352 (2015.01);
Abstract

A multilayer film comprising two layers, A and B, having a A/B/A arrangement, wherein layers A and B differ from each other. Layer A comprises an aliphatic and/or aliphatic-aromatic biodegradable polyester or a polyvinyl alcohol or copolymers thereof and does not contain starch. Layer B comprises 30-95% by weight of at least an aliphatic-aromatic polyester (AAPE), 0.1-50% by weight of at least a polymer of natural origin, and 1-40% by weight of at least a polyhydroxyalkanoate (PHA). The multilayer biodegradable film which is particularly suitable for the manufacture of packaging and has appreciable optical transparency properties in addition to high level mechanical properties.

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