Method and means for pre-applying an adhesive to a substrate

7 The converting machine of claim 1 wherein the adhesive is applied by roll coating, slot-coating, swirl spraying, ink jet printing, extrusion, atomized spraying, gravure, fiberization, flexographic printing and/or screen printing.

A side seam sealing apparatus comprising means of applying a reactivatable adhesive to a side seam flap and to predetermined other locations of a carton blank or other substrate, said reactivatable adhesive capable of reactivating upon exposure to ultrasonic energy.

A machine comprising means for forming a flat, folded packaging blank having at predetermined locations a reactivatable adhesive, said reactivatable adhesive capable of reactivating upon exposure to ultrasonic energy.

22 A method of applying a reactivatable adhesive onto a substrate surface said method comprising applying a reactivatable adhesive onto the surface of a substrate by roll coating, slot-coating, swirl spraying, ink jet printing, extrusion, atomized spraying, gravure, flexographic printing and/or screen printing, said reactivatable adhesive capable of reactivating upon exposure to ultrasonic energy.

The method of claim 22 wherein said adhesive is applied to the substrate in a discontinuous pattern.

The method of claim 22 wherein said adhesive is applied to the substrate in a continuous pattern.

The method of claim 22 wherein the adhesive is applied within 2 mm of the edge of the substrate.

The method of claim 22 wherein the substrate is a plastic substrate.

The method of claim 22 wherein the substrate is a cellulosic substrate, a thermoplastic substrate, a metallic substrate, or a combination thereof.