| 摘要 |
PROBLEM TO BE SOLVED: To provide a preventive body composition which satisfies backflow prevention performance, ink follow-up performance, and impact-resistant performance, further can suppress adhesion of ink to an internal wall surface of an ink housing cylinder, is excellent in invisibility and temporal stability, and has high practicality.SOLUTION: An ink backflow preventive body composition for writing instrument disposed at a rear end face of ink directly hosed in an ink housing cylinder of a writing instrument, and advancing according to consumption of the ink. The ink backflow preventive body composition for the writing instrument is obtained by mixing sparingly volatile liquid, a gelling agent, and scaly silica.SELECTED DRAWING: None |
