PREPARATION METHOD OF ECO-FRIENDLY LONG-LASTING HEAT-SENSITIVE PAPER
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United States of America
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Issued Date -
Nov 21, 2024
app pub date -
Apr 26, 2023
filing date -
Apr 26, 2023
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Abstract
The present application discloses an eco-friendly long-lasting heat-sensitive paper, including a substrate layer, a base color layer, a heat-sensitive covering layer, and a protective layer that are arranged sequentially from bottom to top, where the heat-sensitive covering layer is prepared as follows: coating a heat-sensitive covering layer raw material on the base color layer, and oven-drying a resulting product, where the heat-sensitive covering layer raw material is an emulsion obtained by mixing an acrylic hollow microsphere with a host resin. In the present application, an acrylic hollow microsphere that can change from an opaque state to a transparent state after rupturing under heat is used as a heat-sensitive covering layer to cover a base color layer to obtain the heat-sensitive paper with heat-sensitive color development characteristics.
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