Interlayer film for laminated glass and laminated glass

An interlayer film for laminated glass comprising 2 or more resin layers laminated on each other,

• wherein the resin layers contain polyvinyl acetal and a plasticizer,
• wherein at least one of the resin layers has a plurality of recesses and a plurality of protrusions on an outer surface such that the interlayer film has the plurality of recesses and the plurality of protrusions on at least one outer surface thereof,
• the recesses each have a groove shape with a continuous bottom,
• the recesses adjacent to each other are parallel to each other and regularly arranged in a line,
• within the at least one outer surface of the interlayer film having the plurality of recesses and the plurality of protrusions, a groove depth (Rzg) of the recesses measured based on JIS B-0601(1994) is 10 μm to 40 μm, and
• a 10-point average roughness (Rz) of an inner surface of the resin layer having the plurality of recesses and the plurality of protrusions measured based on JIS B 0601(1994) is less than 2.7 μm,
• wherein the 10-point average roughness (Rz) is obtained by:
• peeling off the resin layer having the plurality of recesses and the plurality of protrusions from another resin layer in direct contact with the resin layer having the plurality of recesses and the plurality of protrusions to expose the inner surface of the resin layer having the plurality of recesses and the plurality of protrusions, wherein the inner surface of the resin layer having the plurality of recesses and the plurality of protrusions is the surface that was in direct contact with the another resin layer prior to the peeling off, and
• then measuring the inner surface of the resin layer having the plurality of recesses and the plurality of protrusions based on JIS B 0601(1994).