Designated L&L Bond A-K540, this innovative structural adhesive is unique in that it combines direct adhesion – without primers or plasma, corona, flame treatment – to low energy substrates such as polypropylene and polyethylene thermoplastics with very fast cure speeds at room temperature. A-K540 is also capable of bonding a multitude of other substrates, enabling combinations of polyolefin plastics with metal and composite substrates.（仅供参考）