Laminated glass and interlayer film for laminated glasses

Provided is an interlayer film for laminated glasses which contains a plasticizer for interlayer films in an amount 30 parts by weight or more per 100 parts by weight of polyvinyl acetal resin, a storage elasticity modulus G' in a linear dynamic viscoelasticity test, measured with frequencies being varied at 20°C in a range of frequencies of 5.0 × 10 1 to 1.0 × 10 2 Hz, is 3 × 10 7 Pa or lower. Also provided is an interlayer film for laminated glasses, wherein a break of 10 mm or longer in length is generated when an laminated glass is formed by sandwiching the interlayer film for laminated glasses between two glasses and a Head Injury Criteria (HIC) value of the laminated glass is measured. Also provided is a laminated glass which comprises one of the above interlayer films laminated and unified with a glass sheet.