TWI774745B

Provided is an adhesive sheet comprising: a non-adhesive thermally expandable substrate containing a resin and thermally expandable particles that have an expansion start temperature (t) of 120-250°C; and an adhesive layer containing an adhesive resin. The thermally expandable substrate satisfies th...

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Bibliographische Detailangaben
Hauptverfasser: AKUTSU, TAKASHI, KATO, KIICHIRO
Format: Patent
Sprache:chi
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Beschreibung
Zusammenfassung:Provided is an adhesive sheet comprising: a non-adhesive thermally expandable substrate containing a resin and thermally expandable particles that have an expansion start temperature (t) of 120-250°C; and an adhesive layer containing an adhesive resin. The thermally expandable substrate satisfies the requirements (1) and (2) indicated below. Requirement (1): the storage elastic modulus E'(23) of the thermally expandable substrate at 23°C is 1.0 × 106 Pa or more. Requirement (2): the storage elastic modulus E'(t) of the thermally expandable substrate at the expansion start temperature (t) of the thermally expandable particles is 1.0 × 107 Pa or less.