Double-sided adhesive tape, electronic instrument provided with double-sided adhesive tape, disassembly structure provided with double-sided adhesive tape, and adhered structure

An electronic device, comprising:

• an internal power supply configured to drive the electronic device;
• an adherend;
• and
• a double-sided pressure-sensitive adhesive tape configured to bond the internal power supply with the adherend,
• wherein the double-sided pressure-sensitive adhesive tape includes:
• a first pressure-sensitive adhesive layer bonded with the internal power supply;
• a second pressure-sensitive adhesive layer bonded with the adherend;
• and
• an electrically-conductive heat generating layer between the first pressure-sensitive adhesive layer and the second pressure-sensitive adhesive layer, wherein
• the electrically-conductive heat generating layer is in contact with the first pressure-sensitive adhesive layer and the second pressure-sensitive adhesive layer,
• the electrically-conductive heat generating layer includes a first end face and a second end face that is opposite to the first end face in a longitudinal direction of the double-sided pressure-sensitive adhesive tape,
• at least one of the first pressure-sensitive adhesive layer or the second pressure-sensitive adhesive layer includes a heat-foaming agent,
• a heat generating temperature of the electrically-conductive heat generating layer is higher than a foaming starting temperature of the heat-foaming agent,
• a temperature difference between the heat generating temperature and the foaming starting temperature is in a range of 10° C. to 50° C.,
• the heat-foaming agent includes liquefied hydrocarbon in microcapsules of at least one of polyvinyl chloride or polyvinylidene,
• each of the first end face and the second end face of the electrically-conductive heat generating layer extends beyond a corresponding end face of the first pressure-sensitive adhesive layer in the longitudinal direction,
• the second pressure-sensitive adhesive layer includes a third end face and a fourth end face opposite to the third end face in the longitudinal direction, and
• each of the third end face and the fourth end face of the second pressure-sensitive adhesive layer extends beyond a corresponding end face of the first pressure-sensitive adhesive layer in the longitudinal direction.

A dismantlable structure, comprising:

• a double-sided pressure-sensitive adhesive tape;
• and
• a combination of adherends bonded with each other via the double-sided pressure-sensitive adhesive tape, wherein
• the double-sided pressure-sensitive adhesive tape includes:
• a pair of pressure-sensitive adhesive layers, wherein the pair of the pressure-sensitive adhesive layers includes a first pressure-sensitive adhesive layer and a second pressure-sensitive adhesive layer;
• and
• an electrically-conductive heat generating layer between the first pressure-sensitive adhesive layer and the second pressure-sensitive adhesive layer, wherein
• the electrically-conductive heat generating layer is in contact with each of the first pressure-sensitive adhesive layer and the second pressure-sensitive adhesive layer,
• the electrically-conductive heat generating layer includes a first end face and a second end face that is opposite to the first end face in a longitudinal direction of the double-sided pressure-sensitive adhesive tape,
• at least one of the first pressure-sensitive adhesive layer or the second pressure-sensitive adhesive layer includes a heat-foaming agent,
• a heat generating temperature of the electrically-conductive heat generating layer is higher than a foaming starting temperature of the heat-foaming agent,
• a temperature difference between the heat generating temperature and the foaming starting temperature is in a range of 10° C. to 50° C.,
• the heat-foaming agent includes liquefied hydrocarbon in microcapsules of at least one of polyvinyl chloride or polyvinylidene,
• each of the first end face and the second end face of the electrically-conductive heat generating layer extends beyond a corresponding end face of the first pressure-sensitive adhesive layer in the longitudinal direction,
• the second pressure-sensitive adhesive layer includes a third end face and a fourth end face opposite to the third end face in the longitudinal direction, and
• each of the third end face and the fourth end face of the second pressure-sensitive adhesive layer extends beyond a corresponding end face of the first pressure-sensitive adhesive layer in the longitudinal direction, and
• the combination of the adherends is dismantled by
• a heating operation of at least one of the first end face or the second end face of the electrically-conductive heat generating layer, and
• expansion by a foaming operation of the at least one of the first pressure-sensitive adhesive layer or the second pressure-sensitive adhesive layer includes the heat-foaming agent.