Abstract: A method for the manufacture of thermoplastic resin sheets, including extruding molten thermoplastic resin at an extrusion velocity V through a slit provided in an extrusion mold so as to form thermoplastic resin sheets with embossed surfaces, wherein said thermoplastic resin is extruded from said slit in said extrusion mold under conditions such that the ratio V/H of said extrusion velocity V to the width H of said slit exceeds a critical value (V/H)c, said critical value (V/H)c being the ratio of the extrusion velocity to the width of the mold slit corresponding minimum value of the roughness of the embossment formed on the surface of said thermoplastic resin sheets, whereby defects such as the adhesion to and winding onto rollers, inferior appearance and sizing marks which are prone to occur when the sheets are embossed with embossing rollers.

Abstract: The present invention relates to an instantaneous adhesive composition which is satisfactorily made thixotropic or gelled and has a rapid setting time and an excellent adhesive strength, said composition being obtained by adding to an .alpha.-cyanoacrylate a silica gel treated with a silyl isocyanate.