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1. WO2022008187 - AN INDUCTOR FOR TRANSVERSAL SEALING, A PACKAGING MACHINE COMPRSING THE INDUCTOR FOR TRANSVERSAL SEALING AND A METHOD THEREOF

Publication Number WO/2022/008187
Publication Date 13.01.2022
International Application No. PCT/EP2021/066262
International Filing Date 16.06.2021
IPC
B29C 65/36 2006.1
BPERFORMING OPERATIONS; TRANSPORTING
29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
65Joining of preformed parts; Apparatus therefor
02by heating, with or without pressure
34using heated elements which remain in the joint, e.g. "verlorenes Schweisselement"
36heated by induction
B29C 65/74 2006.1
BPERFORMING OPERATIONS; TRANSPORTING
29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
65Joining of preformed parts; Apparatus therefor
74by welding and severing
B65B 9/12 2006.1
BPERFORMING OPERATIONS; TRANSPORTING
65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
BMACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
9Enclosing successive articles, or quantities of material, e.g. liquids or semiliquids, in flat, folded, or tubular webs of flexible sheet material; Subdividing filled flexible tubes to form packages
10Enclosing successive articles or quantities of material, in preformed tubular webs, or in webs formed into tubes around filling nozzles, e.g. extruded tubular webs
12Subdividing filled tubes to form two or more packages by sealing or securing involving displacement of contents
B65B 9/20 2012.1
BPERFORMING OPERATIONS; TRANSPORTING
65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
BMACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
9Enclosing successive articles, or quantities of material, e.g. liquids or semiliquids, in flat, folded, or tubular webs of flexible sheet material; Subdividing filled flexible tubes to form packages
10Enclosing successive articles or quantities of material, in preformed tubular webs, or in webs formed into tubes around filling nozzles, e.g. extruded tubular webs
20the webs being formed into tubes in situ around the filling nozzles
B65B 51/14 2006.1
BPERFORMING OPERATIONS; TRANSPORTING
65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
BMACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
51Devices for, or methods of, sealing or securing package folds or closures, e.g. twisted bag necks
10Applying or generating heat or pressure or combinations thereof
14by reciprocating or oscillating members
B65B 51/22 2006.1
BPERFORMING OPERATIONS; TRANSPORTING
65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
BMACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
51Devices for, or methods of, sealing or securing package folds or closures, e.g. twisted bag necks
10Applying or generating heat or pressure or combinations thereof
22by friction or ultrasonic or high-frequency electrical means
Applicants
  • TETRA LAVAL HOLDINGS & FINANCE S.A. [CH]/[CH]
Inventors
  • ISRAELSSON, Karl
  • KARLSSON, Per
Agents
  • TETRA PAK - PATENT ATTORNEYS SE
Priority Data
20184651.608.07.2020EP
Publication Language English (en)
Filing Language English (EN)
Designated States
Title
(EN) AN INDUCTOR FOR TRANSVERSAL SEALING, A PACKAGING MACHINE COMPRSING THE INDUCTOR FOR TRANSVERSAL SEALING AND A METHOD THEREOF
(FR) INDUCTEUR POUR SCELLEMENT TRANSVERSAL, MACHINE D'EMBALLAGE COMPRENANT L'INDUCTEUR POUR SCELLEMENT TRANSVERSAL ET SON PROCÉDÉ
Abstract
(EN) An inductor (206) for transversal sealing of a tube (104) of packaging material (108) filled with food product. The inductor (206) comprising a main body (402) comprising a first and a second sealing surface (502a, 502b) arranged to face the packaging material (108) during a sealing state (S), a recess (504) provided in the main body (402) for receiving a knife (208) during a cutting state (C), wherein the first and second sealing surface (502a, 502b) are placed on opposite sides of the recess (504), and an electric conductor arrangement, provided in the main body (402), for inducing eddy currents in the packaging material (108) during the sealing state (S), wherein each of the first and second sealing surface (502a, 502b) comprises a top section (506), an inner sealing section (508) placed between the recess (504) and the top section (506), and an outer sealing section (510) placed between the top section (506) and an outer edge (512) of the inductor (206), and wherein the inner sealing section (508) is inclined towards the recess (504), and the outer sealing section (510) is inclined towards the outer edge (512), thereby providing for that product in the food product held inside the tube (104) is pushed away from a sealing band of the tube as the first and second sealing surfaces (502a, 502b) are pressed towards the sealing band.
(FR) Inducteur (206) destiné à sceller transversalement un tube (104) de matériau d'emballage (108) rempli de produit alimentaire. L'inducteur (206) comprenant un corps principal (402) comprenant des première et seconde surfaces de scellement (502a, 502b) agencées pour faire face au matériau d'emballage (108) au cours d'un état de scellement (S), un évidement (504) disposé dans le corps principal (402) destiné à recevoir un couteau (208) au cours d'un état de coupe (C), les première et seconde surfaces de scellement (502a, 502b) étant placées sur des côtés opposés de l'évidement (504), et un agencement de conducteur électrique, disposé dans le corps principal (402), destiné à induire des courants de Foucault dans le matériau d'emballage (108) au cours de l'état de scellement (S), les première et seconde surfaces de scellement (502a, 502b) comprenant une section supérieure (506), une section scellement interne (508) placée entre l'évidement (504) et la section supérieure (506), et une section scellement externe (510) placée entre la section supérieure (506) et un bord extérieur (512) de l'inducteur (206), et la section scellement interne (508) étant inclinée vers l'évidement (504) et la section scellement externe (510) étant inclinée vers le bord extérieur (512), ce qui permet d'écarter le produit dans le produit alimentaire contenu à l'intérieur du tube (104) d'une bande de scellement du tube lorsque les première et seconde surfaces de scellement (502a, 502b) sont pressées vers la bande de scellement.
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