| 摘要 |
PROBLEM TO BE SOLVED: To save manhour or costs for recovery or the like of plastics products by the use of a polypropylene film or polyethylene terephthalate film as a carrier of a thermal recording adhesive label having a thermal recording layer on one surface and an adhesive agent layer on the other surface. SOLUTION: A thermal recording adhesive label makes the use of a coloration reaction between a leuco dye and a colorant, wherein a polypropylene film (PP) and polyethylene terephthalate film (PET) film are used carrier of a label. In the case of recovering PP or PET containers and recycling resources, this obviates the necessity of separating thermal recording adhesive labels. Such thermal recording adhesive labels are furnished with a thermal recording layer and a protector layer as required by turns on one surface side of the PP or PET film, and also with an adhesive layer on the rear surface side; however, it can use one having a separation layer consisting mainly of a silicone resin formed, i.e., on the protection layer before formation of an adhesive agent layer. |
