Ink container, writing instrument, and method for manufacturing an ink container

Abstract

The present invention provides an ink reservoir capable of suppressing deterioration of the ink contained within it. It also provides a writing instrument having such an ink reservoir, and a method for manufacturing the ink reservoir. [Solution] An ink container having an internal space for containing ink, comprising a resin container body with one or both ends open, and an inorganic barrier layer provided on the surface of the container body, wherein the barrier layer comprises an inner barrier layer provided on the inner surface of the container body and an outer barrier layer provided on the outer surface of the container body, and the thickness of the barrier layer is 1 nm or more and 300 nm or less.

Claims

1. An ink container having an internal space for containing ink, A resin storage cylinder body with one or both ends open, The container body comprises a barrier layer made of an inorganic material provided on its surface, The barrier layer comprises an inner barrier layer provided on the inner surface of the housing cylinder body, The outer barrier layer is provided on the outer surface of the storage cylinder body, An ink container having a barrier layer thickness of 1 nm to 300 nm.

2. The ink container according to claim 1, wherein the inner barrier layer and the outer barrier layer are continuous at the end of the container body.

3. An ink container according to claim 1 or 2, having light transmittance that allows the ink contained in the internal space to be seen.

4. The ink container cylinder according to claim 1 or 2, having ink contained in the internal space.

5. An ink reservoir according to claim 1 or 2, having a ballpoint pen tip at one end.

6. A writing instrument comprising an ink reservoir tube as described in claim 1 or 2.

7. A method for manufacturing an ink container, comprising the step of forming an inorganic barrier layer on the inner and outer surfaces of a resin container body, which has one or both ends open, using atomic layer deposition.

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