Patent ID: 6167681
Filing Date: 2001-01-02
Classification: B29C,B29K,B29L,B65B

Abstract:
A sealing apparatus for producing a sealing zone in packaging material having a plastic layer and containing liquid food, comprising: a cutting bar; a sealing block having a front surface; at least a first inductor and a second inductor embedded in said sealing block, said first inductor and second inductor each being partially exposed at the front surface of said sealing block, each inductor being provided with a pressing portion for pressing packaging material during a sealing operation; at least one counter element disposed in opposing relation to the first inductor, the counter element having a front surface for pressing packaging material against said front surface of said sealing block, said cutting bar having a front surface that faces said front surface of said sealing block, said cutting bar having a recess located in said front surface of said cutting bar, said recess opening to said front surface of said cutting bar and receiving said counter element, said counter element having an extension possessing a surface that faces said front surface of said cutting bar prior to the sealing apparatus producing the sealing zone, said extension of said counter element extending along the front surface of said cutting bar and extending outwardly beyond said recess that opens to said front surface of said cutting bar in a direction away from the second inductor; voltage applying means for applying a high frequency voltage to said inductors.