| 摘要 |
PURPOSE:To obtain a self-adhesive tape which comprises a tape base and self-adhesive layers for adhering to adherends and has a strong self-adhesive power, is easily peelable when heated, and can be reused as it is when peeled by incorporating a thermally decomposing foaming agent into the self-adhesive layers. CONSTITUTION:A double-coated self-adhesive tape 1 comprises a tape base 1a and self-adhesive layers 1b, 1b formed on both sides of the base 1a. Adherends 2, 3 bonded to each other by self-adhesive power of the self-adhesive layers 1b, 1b. The self-adhesive layers 1b, 1b contain a thermally decomposing foaming agent 1c. A gas generated by the thermal decomposition of the foaming agent 1c forms bubbles, which forms projections at the interface between adherends 2, 3 and the self-adhesive layers 1b, 1b, decreasing the adhesion area and self-adhesive power and facilitating the peeling of the tape 1 from adherends 2, 3. Thus, the adherends 2, 3 are easily separated from each other without leaving behind the have 1a or the self-adhesive layer 1b on the adherends 2, 3. |
