HEAT SHRINKABLE FILM AND MANUFACTURING METHOD THEREOF
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United States of America Patent
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Issued Date -
Oct 3, 2024
app pub date -
Aug 3, 2022
filing date -
Aug 5, 2021
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Abstract
A heat shrinkable film manufacturing method includes: preparing packaging materials including film labels having resin layers mainly including thermoplastic resin and print layers; preparing first and second virgin raw materials of thermoplastic resin; recovering, from the resin layers, a recycled raw material of thermoplastic resin; and forming a resin-based film including the recycled raw material as a raw material so as to have a core layer and a surface layer layered on the core layer wherein the forming the resin film includes at least one of: forming the core layer including at least the recycled raw material and the first virgin raw material and the surface layer mainly including the second virgin raw material; and forming the core layer including the first virgin raw material and the surface layer including the second virgin raw material and at most 25 wt % of the recycled material.
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