| 摘要 |
PROBLEM TO BE SOLVED: To provide a manufacturing method of a fluid handling device, capable of firmly bonding a PET film to a resin substrate while preventing adhesive from entering into a flow channel.SOLUTION: A resin substrate 120 having a groove 129 formed on its one surface and a PET film 140 having an adhesive layer 160 containing an acrylic resin component and a urethane resin content disposed on its one surface are prepared. The PET film 140 is disposed on one surface of the resin substrate 120 in such a manner that the adhesive layer 160 is disposed between the resin substrate 120 and the PET film 140. The resin substrate 120 and the PET film 140 are bonded by heating the adhesive layer 160 by a prescribed bonding temperature. A glass-transition temperature (Tg) of the resin substrate 120, a melting point (Tm) of the PET film, a glass-transition temperature (Tg) of the adhesive layer 160 and the bonding temperature (Tp) satisfy Tg<Tp<Tg<Tm. |
