Patent ID: 7490456

Claim:
An apparatus for making capsules from two films of a polymeric material, the apparatus comprising a pair of rotary welding dies defining recesses, means to supply the films to the welding dies so they are deformed to form recesses, and means to fill the resulting recesses in the films with a filling material, and means to apply high frequency electrical signals between the welding dies so the films are welded by dielectric welding to form a multiplicity of enclosures containing the filling material, and means to cut the filled enclosures from the remaining parts of the films so as to form a multiplicity of capsules, wherein there is no metal-to-metal contact between the welding dies, and characterised in that the cutting occurs at a different place to the welding but the capsules remain located in recesses throughout their passage between the welding and the cutting steps, wherein the cutting is performed while the enclosures remain located in the recesses in one of the welding dies, said apparatus also comprising a transfer roller and a kiss-cut roller, the enclosures being located in recesses in the transfer roller, and the cutting being performed between the transfer roller and the kiss-cut roller.