Sealing telescoped capsules by energizing capillary trapped...

Details Sealing telescoped capsules by energizing capillary trapped... Sealing telescoped capsules by energizing capillary trapped...

B - Operations, Transporting

65

B

226/10

B65B 5/00 (2006.01) A61J 3/07 (2006.01)

Patent

CA 1260893

ABSTRACT OF THE DISCLOSURE The present invention relates to a method for sealing capsules to render them both tamper-proof and tamper-evident. The method comprises locating a quantity of an adhesion-promoting fluid between the adjacent surfaces of the overlapping capsule wall, and thereafter applying dielectric heat energy in the vicinity of the adhesion-promoting fluid, to cause the adjacent surfaces of the capsule walls to form a permanent bond. Preferably, the adhesion-promoting fluid may comprise a non-solvent for the capsule walls that further has a high dielectric constant. Suitable adhesion-promoting fluids include lower alkanols. The method is capable of rapid operation and is inexpensive by virtue of its simplicity. Reliable capsule seals are achieved that are incapable of violation.

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