Patent ID: 6126585
Filing Date: 2000-10-03
Classification: B31B,B31F

Abstract:
Apparatus for lubricating and curling a rim of a paperboard container comprising:a housing block defining a central recess sized and configured to accept therein a rim of a paperboard container to be curled;an annular curling channel disposed in said recess for curling the rim of the paperboard container in response to relative advancing movement between the paperboard container and the housing block;said housing block also defining an annular liquid channel concentrically disposed in surrounding relationship to said annular curling channel for distributing lubricating liquid; anda porous liquid transfer ring formed of a felt or open-celled foam material, said liquid transfer ring being attached to said housing block in covering relationship to said annular liquid channel so that lubricating liquid supplied to said liquid channel comes into contact with and saturates said liquid transfer ring;said liquid transfer ring includes a circular edge surface which defines a central opening such that said liquid transfer ring extends partially over said curling channel, whereinthe rim of the paperboard container comes into wiping contact with said central opening of said liquid transfer ring so that lubricating liquid is transferred thereto prior to the rim being curled in said curling channel.