Mitsubishi Pencil Company, Limited

Yuichi Inagawa

Saki Tanaka

Takayuki Yamaguchi

A liquid storage includes at least three layers, an inner layer made of paper base material and an intermediate layer of a paper base laminate having 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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Tokyo, Japan

Yuichi Inagawa