| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a double-faced adhesive tape in which the adhesion between a substrate and adhesive-agent layers is high and in which the substrate is less prone to rupture. <P>SOLUTION: A process for producing a double-face adhesive tape including a polytetrafluoroethylene porous-film substrate and adhesive-agent layers on both surfaces of the substrate comprises the following steps (1) to (4) in the following order: (1) a step of applying an adhesive-agent composition to a first release liner; (2) a step of bonding together one of the principal surfaces of the polytetrafluoroethylene porous-film substrate and the first release liner to which the adhesive-agent composition has been applied; (3) a step of heating the substrate to which the first release liner has been bonded to form a first adhesive-agent layer; and (4) a step of providing the other principal surface of the substrate with a second adhesive-agent layer in which a portion of the adhesive-agent thereof has been penetrated into the substrate. <P>COPYRIGHT: (C)2011,JPO&INPIT</p> |
