INTERLAYER FOR LAMINATED GLASS AND LAMINATED GLASS

摘要

PROBLEM TO BE SOLVED: To provide an interlayer for laminated glass capable of lamination at room temperature without the need of heating temporal adhesion and high temperature and high pressure treatment in an autoclave. SOLUTION: This interlayer 1 is made up of a pressure sensitive adhesive layer 2 and releasable films 3 attached to front-back both adhesive surfaces. The pressure sensitive adhesive layer 2 is formed of a pressure sensitive adhesive having the following viscoelastic characteristics, the thickness of the layer 2 preferably is 0.05 to 2 mm and an acrylic pressure sensitive adhesive is employed as the above adhesive: (a) the storage elastic modulus G' (1 Hz) is 5×103 to 5×105 Pa when measured at 20 deg.C and a frequency of 1 Hz; and (b) the storage elastic modulus G' (10-7 Hz) is 5×10' to 5×103 Pa at the reference temperature of 20 deg.C and a frequency of 10-7 Hz.