PROBLEM TO BE SOLVED: To obviate the occurrence of the peel and transfer of printing even if high-pressure steam sterilization is executed by subjecting a label surface to bar code printing and coating at least the top of the bar code printing with transparent UV curing type soft ink. ;SOLUTION: The label 1 previously printed with merchandise names, etc., is printed with the bar codes by using a thermal printer. The label 1 is coated with the transparent UV curing type soft ink (UV ink) 4 by using a coating applicator 2. Namely, the UV ink 4 is applied on the surface of a metallic roll 3 and is applied on the label 1 by a pressure contact roll 5 and a rubber roll 6. The blood bag stuck with such label 1 on the surface of the bag-like body may be made into the product with which the occurrence of the transfer of the printing is substantially averted even if the blood bag is subject to the high-pressure steam sterilization for 30 minutes at about 120°C.;COPYRIGHT: (C)1998,JPO
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