| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an ink backflow prevention body composition of high practicality that satisfies both the impact resistance performance and stability in the long term and has enough ink followability and ink backflow prevention performance. <P>SOLUTION: The ink backflow prevention body is arranged at the rear end surface of the ink accommodated directly in the ink housing tube of the writing utensil, and advances according to the consumption of the ink, and the ink backflow prevention body is provided by adding the metallocene catalyst olefin wax to the hardly volatile liquid. The metallocene catalyst olefin wax is added by the range of 1-30 mass% ink backflow prevention body composition to the total amount. <P>COPYRIGHT: (C)2013,JPO&INPIT |
