MAGNETIC FIBROUS MATERIAL, PAPER FOR PREVENTING COUNTERFEITING BY USING THE SAME, AND PRINTED MATERIAL PREVENTING COUNTERFEITING

摘要

PROBLEM TO BE SOLVED: To obtain a magnetic fibrous material capable of providing a paper for preventing counterfeiting by allowing the paper to include the magnetic fibrous material, and further, a printed material for preventing counterfeiting obtained by printing on the paper, by fixing a magnetic particles having a specified particle diameters on the surface of a fibrous material having a specified fiber length by an impact method in a high-speed gas flow. ;SOLUTION: The objective magnetic fibrous material is obtained by fixing a magnetic particles having 0.1-100 μm particle diameters on the surface of a fibrous material having ≤5 mm weight average fiber length, preferably a cellulose fibrous material, a regenerated cellulose fibrous material, a vinylon fibrous material having 50-100°C hot-water dissolving temperature, or the like, by an impact method in a high-speed gas flow. The fibrous material is preferably of a single fiber having 0.1-5 mm weight average fiber length and 5-300 axial ratio.;COPYRIGHT: (C)1999,JPO