Method for producing a package
AssigneeKoch Pac-Systeme GmbH
InventorsJürgen Bitzer, Jens Maier, Markus Eppler, Frank Helber
Life of this patent
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Abstract
A method for producing a package which has a formed part with a product cavity, and a lidding film covering the product cavity. According to the method, a seam is defined, the seam is divided into sections, a pull-off force for pulling the lidding film from the formed part at least for a first section is determined, and the lidding film is sealed to the formed part. The sealing temperature for the first section is selected based on the pull-off force.
Claims15
A method for producing a package comprising a formed part having at least one product cavity, and a lidding film covering the at least one product cavity, wherein the lidding film is to be pulled off from the formed part in a pull-off direction, wherein the method comprises the steps of:
- (a) defining a seam to be produced, along which the lidding film is to be sealed to the formed part around the at least one product cavity;
- (b) dividing the seam to be produced into a plurality of sections, which comprise a first section, a second section, and a third section,
- wherein the first section, the second section and the third section are arranged one behind the other in the pull-off direction,
- wherein the first section is a tear-open section, in which the lidding film is to be separated first from the formed part to open the package,
- wherein the second section is a pull-off section, in which the lidding film is to be pulled away in the pull-off direction from the first section toward the third section to open the package;
- wherein the third section is an end section, which is arranged behind the first and the second sections with respect to the pull-off direction, and in which the lidding film remains connected to the formed part for the longest period of time during opening of the package;
- (c) determining, at least for the first section of the plurality of sections, a first pull-off force for pulling the lidding film from the formed part;
- (d) sealing the lidding film to the formed part along the seam by means of a sealing device with a first sealing temperature in the first section and a second sealing temperature in the second section, wherein the first and the second sealing temperatures are different, wherein at least the first sealing temperature for the first section is selected based on the first pull-off force determined according to step (c);
- and wherein a third sealing temperature for the third section differs from the first sealing temperature and/or second sealing temperature.
A method for producing a package comprising a formed part having at least one product cavity, and a lidding film covering the at least one product cavity, wherein the method comprises the steps of:
- (a) defining a seam to be produced, along which the lidding film is to be sealed to the formed part around the at least one product cavity;
- (b) dividing the seam to be produced into a plurality of sections, which comprise at least a first section and a second section of the plurality of sections;
- (c) determining, at least for the first section of the plurality of sections, a first pull-off force for pulling the lidding film from the formed part;
- (d) sealing the lidding film to the formed part along the seam by means of a sealing device with a first sealing temperature in the first section and a second sealing temperature in the second section, wherein the first and the second sealing temperatures are different, and wherein at least the first sealing temperature for the first section is selected based on the first pull-off force determined according to step (c);
- wherein step (b) comprises the steps of:
- (b1) determining a reference curve, which is characteristic of a change in a reference pull-off force of a reference package versus a separation length in the pull-off direction;
- (b2) determining the plurality of sections on the basis of the reference curve and dividing the seam into the plurality of sections correspondingly.
Dependencies are inferred from the claim text.