| 摘要 |
PROBLEM TO BE SOLVED: To make separation of oil difficult while a low consistency assuring a high follow-up property is provided by a method wherein a viscosity of base oil is a specific value or under, a content of a thickener is a specific % or under, two or more kinds of thickeners of a combination with a different group are contained from the thickeners, and an ink follow up material gelled product is used individually or used jointly with a solid matter of a specific gravity within a specific range. SOLUTION: In a water-based ball-point pen for receiving an ink 20 directly in an ink receiving tube 10, an ink follow-up material gelled product 30 wherein a viscosity of base oil at 25 deg.C is 3 Pa.sec or under, a content of a thickener is 6% or under in total, and two or more kinds of thickeners having a combination with at least a different group from in the thickeners composed of groups of inorganic fine grain thickeners, viscosity thickeners, and metallic soaps are contained, is used independently, or used jointly with solid matter of which a specific gravity is 0.80 to 1.10. For a manufacture of the gelled product 30, as an exampls, a very simple method wherein after preliminarily kneading all gelled product components of all thickeners, base oil, surfactant, etc., at room temperature, it is kneaded with a dispersing machine such as a three rolls mill, the kneader, etc., suffices. |
