Patent No. EP3392329 (titled "Laundry Sheet Comprising Functional Granules") was filed by LG Household & Health Care on Dec 16, 2016. The application was issued on Aug 2, 2023.
Laundry sheet with improved cleaning performance, comprising a water-soluble polymer film and undissolved granules of a builder, enzyme, bleaching agent, or bleach activator. The granules are dispersed between the polymer chains of the film, maintaining their activity until washing. The film is prepared by dissolving the polymer in water, adding the granules, and removing the solvent. The sheet can be stacked with additional films to enhance stability and prevent granule detachment.

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