Harro Höfliger has devel­oped a com­pletely new process for the water sealing of water-sol­uble pouches filled with cleaning agents. Print heads, such as those used in ink jet printers, with pin­point accu­racy and in a con­trolled manner moisten the film made from polyvinyl alcohol (PVOH) with water to begin to dis­solve it. Con­tact with the second film pro­duces a very homo­ge­neous, dense and extremely resilient sealing seam, which is sig­nif­i­cantly nar­rower than with con­ven­tional heat sealing. The same film width allows more packs to be pro­duced with any desired con­tour and with shorter pro­duc­tion times. Cam­eras con­tin­u­ously mon­itor all processes and pro­vide 100% quality con­trol of all pouches. The con­tact­less water appli­ca­tion does not cause any con­t­a­m­i­na­tion and thus reduces the cleaning and main­te­nance efforts and expenses for the system.

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Photo: Helmar Lünig