US Patent Issued to RENGO on Sept. 8 for "Flame-proof corrugated paperboard and method for producing same" (Japanese Inventors)

ALEXANDRIA, Va., Sept. 8 -- United States Patent no. 12,729,485, issued on Sept. 8, was assigned to RENGO Co. LTD. (Osaka, Japan).

"Flame-proof corrugated paperboard and method for producing same" was invented by Aya Kinugawa (Osaka, Japan) and Kengo Nozaki (Osaka, Japan).

According to the abstract* released by the U.S. Patent & Trademark Office: "Provided are a flame-proof linerboard and a flame-proof corrugated paperboard in which with a small coating amount, a flame-proof layer is formed on the surface of a general linerboard so as to reduce penetration of the flame-proofing agent, and which are thus low in cost and exhibit high flame-proof performance. A flame-proof corrugated paperboard (21) is produced which includes, as a linerboar...