| 摘要 |
PROBLEM TO BE SOLVED: To record commodity information and temp. control information, using one temp. indicating member and make the manufacturing process simple and inexpensive by forming a plurality of indication regions having different temp. characteristics on the indicating member formed on a support surface. SOLUTION: A temp.-indicating material (leuco dye, developer, reversible agent, resin, etc., dissolved with toluene) 4 which is irreversible under the environmental temp. and changes the color due to the crystalline to amorphous or phase separation to non-separation change is coated on a support 3 and pasted onto a base 2 to form a temp. control member 1. On this control member 1 indicating regions A and B large and small color changes due to temp. change are formed respectively. A temp. control code 10 showing temp. control information 8 is formed, e.g. on the area A and date information 11 showing commodity information 7 and commodity control code 9 are formed, e.g. on the area B. Thus the variable temp. information can be surely comprehended with the commodity information 7 indicated at all times. |
