Patent ID: 6923980

Claim:
A process for making capsules, the process using at least three films of polymeric material, and the process comprising the steps of deforming two of the films to form a multiplicity of recesses, filling the recesses with a flowable filling material with the films in a substantially horizontal position, welding a flat film onto at least one of the films with filled recesses to form a multiplicity of covered recesses containing the filling material, bringing the two films containing recesses together with the recesses aligned, and welding the films together, and cutting the filled enclosures from the remaining parts of the films so as to form a multiplicity of capsules, wherein the films are of a water-soluble or edible polymeric material, each film being dry and in equilibrium with ambient atmosphere containing humidity, wherein each welding step utilizes dielectric welding to weld the films together between a pair of substantially flat opposed welding electrodes, and wherein the recesses in each of the films are formed in the said multiplicity of corresponding recesses in the respective electrode, the recesses forming an array on the upper surface of the electrode, and in each welding step the recesses in at least one film remain in the recesses in the respective electrode.