Feuille adhésive pour traitement au laser

N° de brevet: EP1892275 (A2)
Date de publication: 2008-02-27
Inventeur(s): SASAKI TAKATOSHI [JP];TAKAHASHI TOMOKAZU [JP];ASAI FUMITERU [JP];YAMAMOTO AKIYOSHI [JP];SHINTANI TOSHIO [JP];
Demandeur(s): NITTO DENKO CORP [JP];
Classification: C09J7/02;B23K26/42;
N° de demande: EP20070016007 20070814 
Numéro(s) de priorité: JP20060224936 20060822 
An adhesive sheet for laser processing, comprises a base film and an adhesive layer laminated on the surface of the base film, wherein the base film has a melting protection layer on the back side thereof. According to the adhesive sheet for laser processing of the present invention, the melting of the base film caused by the local concentration of laser beam energy at the places irradiated with the laser beam can be effectively prevented. Accordingly, the back side of the base film can be prevented from locally adhering to the processing table in the dicing apparatus, and subsequent steps, namely, drawing the base film to separate the workpiece from the adhesive layer, and individually recovering these, can be carried out easily and efficiently.

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