Ultrasonic sealing systems and anvils

Abstract

The present invention relates to an anvil (500) of an ultrasonic sealing system (300) for sealing a tube (112) of packaging material laterally. The anvil (500) comprises a ridge (508) extending along the transverse direction (TD) of the anvil (500), the ridge (508) comprising an intermediate section (504) and first and second peripheral sections (502, 506) located on either side of the intermediate section (504), the first and second peripheral sections (502, 506) each comprising a first sub-section (502b, 506b) and a second sub-section (502 The ridge (508) comprises d, 506d), the first sub-parts (502b, 506b) being positioned between the intermediate part (504) and the second sub-parts (502d, 506d), the first sub-parts (502b, 506b) of the ridge (508) having a first height (h1), and the second sub-parts (502d, 506d) of the ridge (508) having a second height (h2), the first height (h1) being different from the second height (h2).

Claims

1. An anvil (500) of an ultrasonic sealing system (300) for sealing a tube (112) of packaging material laterally, wherein the anvil (500) comprises a ridge (508) extending along the transverse direction (TD) of the anvil (500), and the ridge (508) The intermediate section (504) and The first and second peripheral sections (502, 506) are located on both sides of the intermediate section (504), The first and second peripheral sections (502, 506) comprise a first sub-part (502b, 506b) and a second sub-part (502d, 506d), the first sub-part (502b, 506b) being positioned between the intermediate part (504) and the second sub-part (502d, 506d), The first sub-parts (502b, 506b) of the ridge (508) have a first height (h1), and the second sub-parts (502d, 506d) of the ridge (508) have a second height (h2), and the first height (h1) is different from the second height (h2). Anvil (500).

2. The first height (h1) is greater than the second height (h2). An anvil (500) according to claim 1.

3. The first and second peripheral sections (502, 506) further include ends (502f, 506f) located at the distal end of the anvil (500), The ends (502f, 506f) of the ridge have a third height (h3), and the third height (h3) is equal to the first height (h1) of the first sub-parts (502a, 506a) of the ridge (508). An anvil (500) according to claim 1 or 2.

4. The difference between the first height (h1) of the first sub-parts (502b, 506b) of the ridge (508) and the second height (h2) of the second sub-parts (502d, 506d) of the ridge (508) is set based on the structural characteristics of the packaging material. An anvil (500) according to any one of claims 1 to 3.

5. The difference between the first height (h1) of the first sub-parts (502b, 506b) of the ridge (508) and the second height (h2) of the second sub-parts (502d, 506d) of the ridge (508) is 0.05 mm to 0.3 mm, preferably 0.1 mm. An anvil (500) according to any one of claims 1 to 4.

6. The second sub-parts (502d, 506d) of the ridge (508) form a notch (514) in the ridge (508). An anvil (500) according to any one of claims 1 to 5.

7. The second sub-parts (502d, 506d) of the ridge (508) are provided with a first notch (514a) and a second notch (514b) within the ridge (508), The second height (h2) of the second sub-part (502d, 506d) is the height of the ridge (508) in the first and second notches (514a, 514b). An anvil (500) according to any one of claims 1 to 5.

8. The first and second peripheral sections (502, 506) further include first transition sections (502a, 506a) adjacent to the intermediate section (504), The sum of the lateral lengths of the first transition portions (502a, 506a) of the first and second peripheral sections (502, 506) is greater than the lateral length of the intermediate portion (504). An anvil (500) according to any one of claims 1 to 7.

9. From the intermediate portion (504) in the longitudinal direction of the anvil (500), at least one of the width, inclination angle, and offset of the second sub-parts (502d, 506d) is different from the width, inclination angle, and offset of the first sub-parts (502b, 506b) from the intermediate portion (504) in the longitudinal direction of the anvil (500). An anvil (500) according to any one of claims 1 to 8.

10. The second sub-portions (502d, 506d) of the ridge (508) are positioned to compensate for the longitudinal fold lines (202a-d) and / or the ends of the packaging material tube (112) in a lateral sealed state. An anvil (500) according to any one of claims 1 to 9.

11. The first and second peripheral sections (502, 506) further comprise a second transition section (502c, 506c) positioned between the first sub-part (502b, 506b) and the second sub-part (502d, 506d) of the first and second peripheral sections (502, 506), The lateral length of the first transition section (502a, 506a) is greater than the lateral length of the second transition section (502c, 506c). An anvil (500) according to any one of claims 1 to 10.

12. An ultrasonic sealing system (300) for sealing a tube (112) of packaging material laterally, wherein the ultrasonic sealing system (300) An ultrasonic generator (304) is positioned to transmit ultrasonic vibrations to the tube (112), An anvil (500) according to any one of claims 1 to 11, arranged opposite to the ultrasonic generator (304), wherein, in a lateral sealed state, the tube (112) is positioned between the ultrasonic generator (304) and the anvil (500), Equipped with, Ultrasonic sealing system (300).

13. A packaging machine (100) equipped with a lateral sealing (TS) station (114) that seals and cuts a tube (112) of packaging material laterally to form a package (116), The TS station (114) comprises the ultrasonic sealing system (300) described in claim 12. Packaging machine (100).

14. A method (600) for sealing a tube (112) of packaging material laterally using the ultrasonic sealing system (300) according to claim 12, wherein the packaging material comprises a cardboard layer and a plastic film adhered to the cardboard layer. The above method (600) is, The lateral sealing portion of the packaging material tube (112) is positioned between the ultrasonic generator (304) and the anvil (500) (S602). The ultrasonic generator (304) of the ultrasonic sealing system (300) generates ultrasonic vibrations such that the plastic film in the lateral sealing portion of the packaging material melts at least partially (S604). In the lateral seal portion, the tube (112) is pressed between the ultrasonic generator (304) and the anvil (500), pressure is formed on the lateral seal portion (302), the plastic film is bonded, and a lateral seal is formed (S606). A method (600) comprising:

15. A computer program, which, when executed by a computer, comprises instructions to the computer to perform the steps (600) of the method according to claim 14, Computer program.

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