Method for producing laminates and method for producing liquid discharge heads

A method for producing a liquid discharge head, the method comprising:

• a step of forming a layer of a photosensitive resin composition (1) to form a flow channel-formation member that forms a liquid flow channel on a substrate;
• a step of obtaining a laminate by laminating a layer of a photosensitive resin composition (2) onto the layer of the photosensitive resin composition (1) while applying heat to the photosensitive resin composition (2) for forming a discharge orifice-formation member that is provided on the flow channel-formation member and has a discharge orifice that discharges a liquid;
• a step of obtaining a photocured material by exposing the laminate;
• and
• a step of forming the flow channel-formation member and the discharge orifice-formation member by developing the photocured material,
• wherein a photoexposure dose required to cure the photosensitive resin composition (2) is less than a photoexposure dose required to cure the photosensitive resin composition (1), and the photosensitive resin composition (1) contains an epoxy resin (1) having a weight-average molecular weight Mw of 5,000 to 600,000, a softening point of at least 140° C., and an epoxy equivalent weight of not more than 2,300.