ZEIN COATED OR IMPREGNATED PAPER STRAWS AND RELATED TUBLAR ARTICLE
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United States of America Patent
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Issued Date -
Mar 27, 2025
app pub date -
Sep 27, 2023
filing date -
Sep 27, 2023
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Abstract
The present invention comprises a method, process, and composition that enhances the performance of paper straws through the use of zein treatments which significantly enhance the wet strength of paper straws. Selection of the paper substrate found that Hanji paper displays remarkable durability, reinforcing performance of the straws even when exposed to water and high salinity. Furthermore, the present invention exhibits substantial effectiveness in curbing starch migration from the paper straws, creating a protective barrier against starch-based glues that might otherwise compromise beverage flavor and pose gluten-related concerns. Additionally, the present invention outlines a method for crafting spirally-wound straws using a biodegradable paper strip impregnated with the zein treatment. The straws of the present invention offer an adhesive-free, sustainable, and environmentally-friendly solution for making durable straws.
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