Method for thermally releasing adherend and apparatus for thermally releasing adherend
First Claim
1. A method for thermally releasing an adherend, which comprises selectively releasing a plurality of adherends adhered on a thermally releasable pressure-sensitive adhesive sheet, the pressure-sensitive adhesive sheet comprising a thermally expandable layer containing thermo-expandable microspheres, by partly heating the pressure-sensitive adhesive sheet.
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Abstract
The invention provides a method for thermally releasing an adherend, which comprises selectively releasing one or some of a plurality of substances adhered on a thermally releasable pressure-sensitive adhesive sheet having a thermally expandable layer containing therein thermo-expandable microspheres, by partly heating the pressure-sensitive adhesive sheet using a heating unit capable of partly heating the pressure-sensitive adhesive sheet. This thermally releasing method may further involve a step of cutting the substance adhered to the pressure-sensitive adhesive sheet. In this occasion, the heating unit has a heating portion of a shape in conformity with the shape of the adherend to be released, and may be provided on at lease one of the side to which the adherend is adhered and the opposite side thereto of the pressure-sensitive adhesive sheet.
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Citations
12 Claims
- 1. A method for thermally releasing an adherend, which comprises selectively releasing a plurality of adherends adhered on a thermally releasable pressure-sensitive adhesive sheet, the pressure-sensitive adhesive sheet comprising a thermally expandable layer containing thermo-expandable microspheres, by partly heating the pressure-sensitive adhesive sheet.
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5. A method for thermally releasing an adherend, which comprises the steps of:
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cutting an adherend adhered to a thermally releasable pressure-sensitive adhesive sheet, into a plurality of cut pieces, the pressure sensitive adhesive sheet comprising a thermally expandable layer containing thermo-expandable microspheres; and
selectively releasing the cut pieces by partly heating the plurality of cut pieces with a heating unit for partly heating the pressure-sensitive adhesive sheet. - View Dependent Claims (6)
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7. An apparatus for thermally releasing part of a plurality of adherends from a thermally releasable pressure-sensitive adhesive sheet, the pressure-sensitive adhesive sheet comprising a thermally expandable layer containing thermo-expandable microspheres, which comprises:
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a fixing unit for fixing the pressure-sensitive adhesive sheet; and
a heating unit for partly heating the pressure-sensitive adhesive sheet to selectively release the plurality of the adherends from the pressure-sensitive adhesive sheet. - View Dependent Claims (8, 9, 10, 11)
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12. An apparatus for thermally releasing cut pieces of an adherend, which comprises:
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a fixing unit for fixing a thermally releasable pressure-sensitive adhesive sheet comprising a thermally expandable layer containing thermo-expandable microspheres;
a cutting unit for cutting an adherend adhered on the pressure-sensitive adhesive sheet so as to form a plurality of cut pieces; and
a heating unit for partly heating the pressure-sensitive adhesive sheet to selectively release the plurality of the cut pieces from the pressure-sensitive adhesive sheet.
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Specification