Permoflex Protein Adhesive is a line of permanently flexible animal glues or protein adhesives. Protein Adhesives are typically used in applications such as case making, bench work, and flat mounting. Permoflex Protein Adhesive melts down readily, spreads easily, sets firmly, and will not crack or crystallize. GC-100 Permoflex Protein Adhesive is ideal for flat sheet lamination and quick turned edge work with moderate initial tack and average open time.