PURPOSE: To make a film so as to have excellent antibacterial activity and transparency by forming a film from a resin constituent containing the specified antibacterial inorganic powder, resin, a high boiling solvent and a low boiling solvent.
CONSTITUTION: A film is formed from a resin constituent containing antibacterial inorganic powder, resin, a high boiling solvent of more than 100°C in boiling point and a low boiling solvent of less than 100°C in boiling point, but in this case, a difference between boiling points of both these solvents is more than 5°C. As for the antibacterial inorganic powder, for example, antibacterial zeolite or amorphous aluminosilicate may be used. The resin constituent is prepared by mixing the antibacterial inorganic powder, resin and two types of solvents together or mixing them after adsorbing the high boiling solvent to the antibacterial inorganic powder in advance. In this mixing, a fact that viscosity of the resin constituent containing the antibacterial inorganic powder is 1,000-200,000cP, if possible, 2,000-500,000cp facilitates application work by a knife coater or a roll coater, thus it is desirable from the standpoint that a uniform resin constituent is securable in a relatively short time.
KURIHARA YASUO
SUGIURA KOJI
SHINANEN NEW CERAMIC KK