Method for closing tubular packaging sheaths filled with a viscous filling material

摘要

When closing a tubular packaging sheath which is filled with a viscous filling material, in particular sealing compounds, and which has been filled taut counter to the braking force of a skin brake from a tubular supply situated on a filling pipe, in conventional closing by constricting the filling material by means of recoil scissors there is the risk that the packaging sheath material is damaged and, as a result, air and moisture can get in and harden the filling material. This risk is eliminated by virtue of the fact that after the filling process has ended the packaging sheath is pulled sufficiently far away from the filling pipe that by means of negative pressure a constriction of the packaging sheath is formed in front of the end of the filling pipe where it is conventionally closed. <IMAGE>