LIQUID STORAGE MEMBER FOR COATING TOOLS
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United States of America Patent
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Issued Date -
Feb 8, 2024
app pub date -
Dec 17, 2021
filing date -
Dec 24, 2020
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Abstract
Provided is a liquid (e.g., ink) storage member for coating tools to reduce the consumption of plastic and the environmental impact by substituting paper base material for plastics such as polypropylene. The liquid storage member has at least three layers as follows: an inner layer made of paper base material and an intermediate layer of a paper base laminate comprising a metal layer or a silica vapor deposition layer formed on the outer surface side of the paper-based inner layer; and an outer layer made of paper base material formed on the outer surface side of the intermediate layer. The paper base laminate is wound into a spiral shape and on the outer surface side of the intermediate layer, the outer layer is also wound into a spiral shape. A polyolefin resin-containing adhesive layer lies in between the inner and intermediate layers and/or between the intermediate and outer layers.
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