Rengo has filed a patent for an anchor coating agent that aims to reduce misting, provide uniform transfer to print media, and improve coating film durability. The agent contains an emulsion, either cellulose ether or polyvinyl alcohol, and an aqueous medium. GlobalData’s report on Rengo gives a 360-degree view of the company including its patenting strategy. Buy the report here.

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According to GlobalData’s company profile on Rengo, antibacterial waterproof packaging paper was a key innovation area identified from patents. Rengo's grant share as of September 2023 was 20%. Grant share is based on the ratio of number of grants to total number of patents.

A recently filed patent (Publication Number: US20230287233A1) describes an anchor coating agent for use in flexographic printing. The coating agent is composed of an emulsion, at least one cellulose ether or polyvinyl alcohol, and an aqueous medium. The cellulose ether can include hydroxypropyl methyl cellulose and hydroxyethyl methyl cellulose. The emulsion used in the coating agent has an acid value of less than 50 mgKOH/g and is present as a solid content in an amount of 5 to 65 mass % based on the total mass of the coating agent.

Additionally, the anchor coating agent may contain an ionic salt, specifically a calcium salt, in an amount of 0.1 to 40 mass % based on the total mass of the coating agent. This anchor coating agent is specifically designed for use in flexographic printing, a type of printing commonly used in packaging and labeling industries.

The patent also describes a method for producing a flexographic printed matter using a flexographic printer. The method involves applying the anchor coating agent to a print medium. The coating agent is applied in an amount of 0.1 to 10 g/m2 as a solid content, and more specifically, in an amount of 0.1 to 2 g/m2 as a solid content.

Overall, this patent introduces an anchor coating agent specifically designed for flexographic printing. The agent includes an emulsion, cellulose ether or polyvinyl alcohol, and an aqueous medium. It may also contain an ionic salt, such as a calcium salt. The method described in the patent involves applying the coating agent to a print medium in specific amounts. This innovation has the potential to improve the quality and efficiency of flexographic printing processes.

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GlobalData Patent Analytics tracks bibliographic data, legal events data, point in time patent ownerships, and backward and forward citations from global patenting offices. Textual analysis and official patent classifications are used to group patents into key thematic areas and link them to specific companies across the world’s largest industries.