Sealing jaw
A sealing jaw for manufacturing a sealing seam in a heat-sealable packaging material. The invention furthermore relates to an induction sealing device with a sealing jaw and to a packaging machine with induction sealing device. In order to provide a sealing jaw with which a sealed and durable sealing seam can be produced, even when solid components of the in-filled product are trapped between the jaws that have to be moved towards one another, a sealing jaw is proposed with means of a sealing jaw with a sealing surface that is provided in order to come into contact with the heat-sealable material, and a rod or bar-shaped heating device that is provided in order to heat up the heat-sealable material, wherein a pressure element is provided on the sealing surface, projecting above said sealing surface, and distanced from the heating device.
1. A sealing jaw system comprising a sealing jaw, for manufacturing a transverse sealing seam ( 19 ) in the heat-sealable material for a package, where the heat sealable material has transverse crease lines 12 oriented in a direction that insects longitudinal crease lines 10 , said transverse crease lines being interrupted by gaps at a location where its direction passes a longitudinal crease line, and auxiliary crease lines 17 , 18 extending parallel to the direction of the transverse crease lines at least along the gaps, said sealing jaw having a sealing surface that is provided for coming into contact with the heat-sealable material, and at least one rod or bar-shaped heating device is provided on the sealing surface for heating the heat-sealable material, wherein at least one pressure element ( 23 ) is provided on the sealing surface, projecting above the sealing surface and at a distance from the heating device ( 22 ) and wherein the pressure element ( 23 ) is rod or bar shaped and extends substantially parallel to the heating device ( 22 ) and the pressure element ( 23 ) is adjustable for engagement with a fold line ( 10 , 11 ) running in a longitudinal direction relative to the pressure element and such that pressure element 23 extends along at least a portion of auxiliary crease lines 17 , 18 .
2. A sealing jaw system comprising a sealing jaw according to claim 1 wherein the heating device ( 22 ) and the pressure element ( 23 ) are distanced apart from one another by at least 0.1 mm.
3. A sealing jaw system comprising a sealing jaw according to claim 1 wherein the heating device ( 22 ) and the pressure element ( 23 ) are distanced apart from one another by between 0.25 mm and 3 mm.
4. A sealing jaw system comprising a sealing jaw according to claim 1 wherein the heating device ( 22 ) and the pressure element ( 23 ) are distanced apart from one another by between 0.5 mm and 1.5 mm.
5. A sealing jaw system comprising a sealing jaw according to claim 1 wherein the heating device ( 22 ) is provided with an inductor and the pressure element ( 23 ) is composed of a non-conductive material.
6. A sealing jaw system comprising a sealing jaw according to claim 1 wherein two pressure elements ( 23 ) are provided.
7. A sealing jaw system comprising a sealing jaw according to claim 1 wherein two rod or bar-shaped heating devices are provided.
8. A sealing jaw system comprising a sealing jaw according to claim 7 , wherein a cutting or separating device is provided between the two heating devices.
9. A sealing jaw system comprising a sealing jaw according to claim 7 , wherein an aperture for a cutting or separating device is provided between the two heating devices.
10. A sealing jaw system comprising a sealing jaw according to claim 1 , wherein each heating device is allocated at least one pressure element ( 23 ).
11. A sealing jaw system comprising a sealing jaw according to claim 1 , wherein the ratio of the length of the heating device to the length of the pressure element ( 23 ) is between 5:1 and 25:1.
12. A sealing jaw system comprising a sealing jaw according to claim 1 , wherein the pressure element ( 23 ) can be displaced in a longitudinal direction of the sealing jaw.
13. A sealing jaw system comprising a sealing jaw according to claim 5 comprising a counter jaw for producing sealing seam by pressing and heating heat-sealable packaging material between the sealing jaw and a counter jaw.
14. Use of a sealing jaw system according to claim 13 in which flowable material is infilled into a tube ( 1 ) formed from a material web of packaging material provided with fold lines ( 12 , 13 ), where the tube ( 1 ) is provided with a right-angle sealing seam ( 19 ) by pressing and heating heat-sealable packaging material between the sealing jaw and the counter jaw and the sealing jaw system is further provided with a device for detaching the tube from the web in the area of the right-angle sealing seam ( 19 ).