METHOD FOR CHECKING STATE OF ADHESIVE LAYER IN TRANSFER LABEL

摘要

PROBLEM TO BE SOLVED: To detect the position of an adhesive layer by light emission during forming the adhesive layer and after forming the layer by making a resin paste which becomes the adhesive layer colorless and transparent or translucent and adding a marking agent to the resin paste when the adhesive layer is formed in a transfer label. SOLUTION: A transparent or a translucent adhesive layer 4 is formed comparatively thick and to the same shape as the planar shape of a pictorial pattern layer 3 or slightly larger than the planar shape of the pictorial pattern layer 3 so that the adhesive layer 4 can be firmly fusion-bonded to an object 10 to which an image is transferred. Further, a fluorescent agent is slightly added to the resin paste of the adhesive layer 4 as a marking agent. The position of the adhesive layer 4 can be detected by emitting light such as ultraviolet rays or a visible ray with the addition of the fluorescent agent. Besides, the adhesive layer 4 is made to emit a light by a flashlamp 7 and the position of the adhesive layer 4 can be easily determined visually. Thus it is possible to easily detect and reject the defective transfer label whose adhesive layer position is shifted.