BIODEGRADABLE LAMINATED FILM AND METHOD FOR MANUFACTURING SAME
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United States of America Patent
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Issued Date -
Nov 30, 2023
app pub date -
Jul 6, 2021
filing date -
Nov 11, 2020
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Abstract
An embodiment of the present invention relates to a biodegradable laminated film capable of improving all of biodegradability, durability, and barrier properties, and to a method for manufacturing the biodegradable laminated film. The laminated film comprises: a substrate layer formed from a biodegradable resin composition; and a barrier layer positioned on at least one side of the substrate layer and formed from a coating composition, wherein the barrier layer includes nanocellulose, and thus has improved barrier properties, such as oxygen permeability and moisture permeability, without a reduction in mechanical properties such as tensile strength and tear strength. Therefore, the biodegradable laminated film according to the embodiment can exhibit excellent properties when used in various fields in which barrier properties are important, such as packaging materials for refrigerated and frozen foods, packaging materials for electronic materials, and medical fluid bags.
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