METHOD FOR PRODUCING POLYAMIDE RESIN FILM
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United States of America Patent
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Issued Date -
Aug 17, 2023
app pub date -
Apr 28, 2023
filing date -
Jan 24, 2020
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Abstract
[Problem] To provide a method for producing a polyamide resin film by using a poi amide resin obtained through polymerization of a regenerated monomer used as a recycled material. [Solution] Provided is a method for producing a polyamide resin film, including: a step of producing a monomer from a raw material (A) for depolymerization, (2) a step of producing a polyamide resin (B) through polymerization using a raw material containing the monomer, (3) a step of refining the polyamide resin (B), and (4) a step of producing an unstretched film using a starting material containing the refined polyamide resin (B), and stretching the unstretched film.
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