Title:
INK CONTAINING MEMBER FOR WRITING UTENSILS
Document Type and Number:
WIPO Patent Application WO/2023/223844
Kind Code:
A1
Abstract:
The present invention provides a liquid containing member for applicators, the liquid containing member being further reduced in the impact on the environment by replacing the material for an intermediate layer from conventionally used aluminum to silica in a paper refill for writing utensils, the intermediate layer being interposed between an inner layer and an outer layer, both of which use paper as a base material. The present invention provides an ink containing member for writing utensils, the ink containing member being characterized by comprising at least three layers that are composed of an inner layer that is formed of a paper base material, an intermediate layer that is formed on the outer surface of the inner layer, and an outer layer that is formed on the outer surface of the intermediate layer, while being formed of a paper base material. This ink containing member for writing utensils is also characterized in that the intermediate layer comprises at least one of an aluminum oxide film layer, a silica film layer that is formed of a low-molecular-weight silane, and a silica film layer that is formed of a polysilazane.
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Inventors:
ICHIKAWA SHUJI (JP)
TANAKA SAKI (JP)
TAKADA KOJI (JP)
TANAKA SAKI (JP)
TAKADA KOJI (JP)
Application Number:
PCT/JP2023/017162
Publication Date:
November 23, 2023
Filing Date:
May 02, 2023
Export Citation:
Assignee:
MITSUBISHI PENCIL CO (JP)
International Classes:
B43K7/02; B32B9/06
Foreign References:
| JP2001146091A | 2001-05-29 | |||
| JP2021016976A | 2021-02-15 |
Attorney, Agent or Firm:
KINOSHITA Shigeru (JP)
Download PDF:
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