Double feedback packing system for pasty material

Claim 1

A method of operating a packaging system wherein a pasty material is dosed as portions into individual containers to form individual packages, the method comprising the steps of: a) measuring at least one dimension of the doses int he containers and thereby producing actual-value outputs corresponding to the volumes of the respective doses; b) comparing the actual-value volume outputs with a set point corresponding to a desired volume; c) altering the dosing of the portions when the volume outputs deviate from the volume set point so as to make the volume outputs generally equal to the volume set point; d) weighing the packages after forming the packages and producing actual-value outputs corresponding to the weights of the packages; e) comparing the actual-value weight outputs with a set point corresponding to a desired weight; and f) altering the volume set point when the weight outputs deviate from the weight set point by increasing the volume set point when the actual-value weight outputs are below the weight set point and decreasing the volume set point when the actual-value weight outputs are above the weight set point until the actual-value weight outputs are generally the same as the weight set point.

Claim 2

A method of operating a packaging system wherein a pasty material is dosed as portions into individual containers to form individual packages, the method comprising the steps of: a) measuring at least one dimension of the doses int he containers and thereby producing actual-value outputs corresponding to the volumes of the respective doses; b) comparing the actual-value volume outputs with a set point corresponding to a desired volume; c) altering the dosing of the portions when the volume outputs deviate from the volume set point so as to make the volume outputs generally equal to the volume set point; d) weighing the packages after forming the packages and producing actual-value outputs corresponding to the weights of the packages; e) comparing the actual-value weight outputs with a set point corresponding to a desired weight; and f) altering the volume set point when the weight outputs deviate from the weight set point by increasing the volume set point when the actual-value weight outputs are below the weight set point and decreasing the volume set point when the actual-value weight outputs are above the weight set point until the actual-value weight outputs are generally the same as the weight set point.

Claim 7

A method of operating a packaging system wherein a pasty material is dosed as portions into individual containers to form individual packages, the method comprising the steps of: a) measuring at least one dimension of the portions and thereby producing actual-value outputs corresponding to the volumes of the respective packages; b) comparing the actual-value volume outputs with a set point corresponding to a desired volume; c) altering the dosing of the portions when the volume outputs deviate from the volume set point so as to make the volume outputs generally equal to the volume set point; d) weighing the packages and producing actual-value outputs corresponding to the weights of the packages; e) comparing the actual-value weight outputs with a set point corresponding to a desired weight; and f) when the weight outputs deviate from the weight set point altering the volume set point by taking into account only a portion of the deviation of the weight outputs from the weight set point by increasing the volume set point when the actual-value weight outputs are below the weight set point and decreasing the volume set point when the actual-value weight outputs are above the weight set point until the actual-value weight outputs are generally the same as the weight set point, whereby a delay between dosing of the portions into the containers and measuring of their weight is compensated for by using only a portion of the deviation.

Claim 8

A method of operating a packaging system wherein a pasty material is dosed as portions into individual containers to form individual packages, the method comprising the steps of: a) measuring at least one dimension of the portions and thereby producing actual-value outputs corresponding to the volumes of the respective packages; b) comparing the actual-value volume outputs with a set point corresponding to a desired volume; c) altering the dosing of the portions when the volume outputs deviate from the volume set point so as to make the volume outputs generally equal to the volume set point; d) weighing the packages and producing actual-value outputs corresponding to the weights of the packages; e) comparing the actual-value weight outputs with a set point corresponding to a desired weight; and f) when the weight outputs deviate from the weight set point altering the volume set point by taking into account only a portion of the deviation of the weight outputs from the weight set point by increasing the volume set point when the actual-value weight outputs are below the weight set point and decreasing the volume set point when the actual-value weight outputs are above the weight set point until the actual-value weight outputs are generally the same as the weight set point, whereby a delay between dosing of the portions into the containers and measuring of their weight is compensated for by using only a portion of the deviation.