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1. EP3936314 - AN INDUCTOR FOR TRANSVERSAL SEALING, A PACKAGING MACHINE COMPRSING THE INDUCTOR FOR TRANSVERSAL SEALING AND A METHOD THEREOF

Office
European Patent Office
Application Number 21179808
Application Date 16.06.2021
Publication Number 3936314
Publication Date 12.01.2022
Publication Kind A1
IPC
B29C 65/36
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
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
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
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
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
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
CPC
B65B 51/30
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; Devices for gathering or twisting wrappers, or necks of bags
10Applying or generating heat or pressure or combinations thereof
26Devices specially adapted for producing transverse or longitudinal seams in webs or tubes
30Devices, e.g. jaws, for applying pressure and heat, e.g. for subdividing filled tubes
B65B 51/227
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; Devices for gathering or twisting wrappers, or necks of bags
10Applying or generating heat or pressure or combinations thereof
22by friction or ultrasonic or high-frequency electrical means ; , i.e. by friction or ultrasonic or induction welding
227by induction welding
B65B 61/06
BPERFORMING OPERATIONS; TRANSPORTING
65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
BMACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
61Auxiliary devices, not otherwise provided for, for operating on sheets, blanks, webs, binding material, containers or packages
04for severing webs, or for separating joined packages
06by cutting
B65B 25/001
BPERFORMING OPERATIONS; TRANSPORTING
65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
BMACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
25Packaging other articles presenting special problems
001of foodstuffs, combined with their conservation
B29C 65/36
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 ; or sealing; of preformed parts ; , e.g. welding of plastics materials; Apparatus therefor
02by heating, with or without pressure
34using heated elements which remain in the joint, e.g. "verlorenes Schweisselement"
36heated by induction
B29C 66/1122
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
66General aspects of processes or apparatus for joining preformed parts
01General aspects dealing with the joint area or with the area to be joined
05Particular design of joint configurations
10particular design of the joint cross-sections
11Joint cross-sections comprising a single joint-segment, i.e. one of the parts to be joined comprising a single joint-segment in the joint cross-section
112Single lapped joints
1122Single lap to lap joints, i.e. overlap joints
Applicants TETRA LAVAL HOLDINGS & FINANCE
Inventors ISRAELSSON KARL
KARLSSON PER
Designated States
Priority Data 20184651 08.07.2020 EP
Title
(DE) INDUKTOR ZUR QUERVERSIEGELUNG, VERPACKUNGSMASCHINE MIT DEM INDUKTOR ZUR QUERVERSIEGELUNG UND VERFAHREN DAFÜR
(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 COMPORTANT L'INDUCTEUR POUR SCELLEMENT TRANSVERSAL ET PROCÉDÉ ASSOCIÉ
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.
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