The present disclosure relates to a composite paperboard container for bulk solids. The composite paperboard container (1) comprising a tubular body (2) being closed at a bottom end (3) over a container bottom opening (4) opposite a container top opening (5) at a top end (6) of the tubular body (2). The tubular body (2) has an inner surface (7) facing towards an interior of the container body (2) and an outer surface (8) facing away from the interior of the container body (2). The tubular body (2) extends in a longitudinal direction (L). The composite container (1) comprises a rim (9) surrounding the container top opening (5) and/or the container bottom opening (4). The rim (9) is attached at a connecting portion (11) of the rim (9) to an end portion (10) of the tubular body (2) along an end edge (12) of the tubular body (2). The connecting portion (11) of the rim (9) has a distal edge (11a). The tubular body (2) is made from a laminate sheet material (8) comprising a carton substrate layer and a thermoplastic welding layer (14). The rim (9) is a molded rim (9) comprising pulp fibers, such as softwood pulp fiber. The tubular body (2) is connected by welding to the connecting portion (11) of the rim (9) and the distal edge (11a) of the rim is located at a distance from the end edge (12) of the tubular body of at distance from the end edge (12) of the tubular body of at least 4 mm, optionally within the range of from 4 mm to 50 mm, as seen in the longitudinal direction (L) of the tubular body (2). The present disclosure also relates to a method of producing a composite paperboard container.
B32B 27/10 - Produits stratifiés composés essentiellement de résine synthétique comme seul composant ou composant principal d'une couche adjacente à une autre couche d'une substance spécifique de papier ou de carton
B65D 43/16 - Couvercles ou chapeaux inamovibles s'ouvrant à charnières vers le haut ou vers le bas
The present disclosure relates to a composite paperboard container (1) for bulk solids, the composite paperboard container comprising a tubular body (2) being closed at a bottom end (3) over a container bottom opening (4) opposite a container top opening (5). The composite container comprises a rim (9) surrounding the container top opening and/or the bottom opening. The rim is attached with a first connecting portion (11) of the rim to an end portion (10) of the tubular body. The rim is a molded rim comprising pulp fiber.The rim is connected to the tubular body by means of a first adhesive layer (14), the first adhesive layer comprises or consists of thermoplastic adhesive in an amount of from 0.1 mg per 10 mm of the container opening perimeter (pt,pb) at the end portion of the tubular body. The present disclosure furthermore relates to a method of producing a composite paperboard container.
B32B 27/10 - Produits stratifiés composés essentiellement de résine synthétique comme seul composant ou composant principal d'une couche adjacente à une autre couche d'une substance spécifique de papier ou de carton
B65D 43/16 - Couvercles ou chapeaux inamovibles s'ouvrant à charnières vers le haut ou vers le bas
D21J 3/00 - Fabrication d'articles par pressage d'une pâte fibreuse humide ou de papier mâché, entre des moules
3.
AN EXPANSIBLE PRESS PLUNGER, AN ATTACHMENT UNIT FOR ATTACHING A CONTAINER ELEMENT TO A CONTAINER BODY AND A METHOD FOR SEALING A PACKAGING CONTAINER
A radially expansible press plunger (2) having a plunger axis (a1) extending in an axial direction (A) perpendicular to a radial direction (R). The expansible press plunger (2) comprises a base plate (8), a first expansion tool (9) and a second expansion tool (10). The first expansion tool (9) and the second expansion tool (10) are movable in relation to each other in the axial direction (A). The first expansion tool (9) comprises at least one inclined plane surface (15), which is arranged with a first end (15') closer to the base plate (8) than a second end (15'') in the axial direction (A). Each inclined plane surface (15) of the first expansion tool (9) is inclined away from the plunger axis (a1) from the first end (15') of the inclined plane surface (15) to the second end (15'') of the inclined plane surface (15). The second expansion tool (10) comprises at least one inclined plane surface (16) corresponding to the at least one inclined plane surface (15) on the first expansion tool (9). Each inclined plane surface (16) on the second expansion tool (10) has a first end (16') being arranged further away from the base plate (8) than a second end (16'') in the axial direction (A). Each inclined plane surface (16) on the second expansion tool (10) is inclined towards the plunger axis (a1) from the first end (16') of the inclined plane surface (16) to the second end (16'') of the inclined plane surface (16). Each inclined plane surface (15) on the first expansion tool (9) contacts and applies pressure to the corresponding inclined plane surface (16) of the second expansion tool (10) when the expansible press plunger (2) is in the radially expanded state. An attachment unit for attaching a container sealing element to a container body and a method for attaching a container sealing element to a container body are also disclosed.
B29C 65/02 - Assemblage d'éléments préformésAppareils à cet effet par chauffage, avec ou sans pressage
B65B 7/28 - Fermeture de réceptacles ou récipients semi-rigides ou rigides, non déformés par le contenu ou n'en prenant pas la forme, p. ex. boîtes ou cartons en appliquant des fermetures séparées préformées, p. ex. couvercles, capuchons
B65B 51/14 - Application ou production de chaleur ou de pression ou les deux à la fois par éléments oscillants ou à mouvement alternatif
B31B 50/66 - Assemblage des surfaces ou des bords opposésCollage par chauffage ou pression, p. ex. par soudage par chauffage électrique à haute fréquence
4.
AN EXPANSIBLE PRESS PLUNGER; AN ATTACHMENT UNIT AND A METHOD FOR ATTACHING A CONTAINER ELEMENT IN A CONTAINER BODY
A radially expansible press plunger comprising a base plate (8) and a first plunger skirt (9). The base plate (8) has a bottom surface (11) with a circumferential edge (12) and a guiding surface (14) opposite the bottom surface (11). The first plunger skirt (9) has a top end (15) and a bottom end (16) and a circumferential edge portion (17) at the bottom end (16) of the first plunger skirt (9). The circumferential edge portion (17) of the first plunger skirt (9) is arranged at the guiding surface (14) of the base plate (8) with the circumferential edge portion (17) of the first plunger skirt (9) being arranged radially inward of the circumferential edge (12) of the bottom surface (11). The first plunger skirt (9) is resiliently transformable between an unexpanded state and a radially expanded state. The expansible press plunger (2) further comprises a second plunger skirt (10) having a top end (20) and a bottom end (21) and comprising a plunger skirt side wall (22) extending from the top end (20) to the bottom end (21) of the second plunger skirt (10). The plunger skirt side wall (22) comprises a circumferential edge portion (25) at the bottom end (21) of the second plunger skirt (10) and being arranged radially outward of the circumferential edge portion (17) of the first plunger skirt (9). The second plunger skirt (10) is resiliently transformable between an unexpanded state and a radially expanded state under influence from the circumferential edge portion (17) of the first plunger skirt (9) which bears against the inner surface (23) of the plunger skirt side wall (22) at the circumferential edge portion (25) of the second plunger skirt (10). An attachment unit for attaching a container sealing element to a container body and a method for attaching a container sealing element to a container body are also disclosed.
B65B 7/28 - Fermeture de réceptacles ou récipients semi-rigides ou rigides, non déformés par le contenu ou n'en prenant pas la forme, p. ex. boîtes ou cartons en appliquant des fermetures séparées préformées, p. ex. couvercles, capuchons
B31B 50/81 - Formation et fixation d’accessoires, p. ex. de dispositifs d’ouverture ou de fermeture, de cordons de déchirure
B65B 51/14 - Application ou production de chaleur ou de pression ou les deux à la fois par éléments oscillants ou à mouvement alternatif
B67B 3/02 - Fermeture des bouteilles, des bocaux ou des récipients analogues par application de capsules par application de capsules à rebord et fixation par déformation du rebord
5.
METHOD OF PRODUCING A PACKAGING CONTAINER, A PACKAGING CONTAINER AND A CURLING TOOL
The present disclosure relates to a paperboard packaging container (1) for bulk solids, the container (1) comprising a tubular container body (2) being made by a laminate sheet material. The first end (3) of the container body (2) is curled inwardly providing a first curled edge (14) comprising an edge portion (14a) and an inner portion (14b). To improve the stability and durability of the curled edge, the inner portion (14b) of the first curled edge (14) is provided with three or more indentations (15) being spaced apart along a circumference of the tubular container body (2). The disclosure also relates to a method for forming a paperboard packaging container, and to a curling tool for forming a curled edge.
A sealing disc (1) for sealing an inner compartment in a packaging container (100), said sealing disc (1) having a first surface (3) and a second surface (4) and being delimited by a sealing disc outer edge (2), the sealing disc (1) comprising a peripheral edge portion (5) surrounding at least two fully or partly removable tear-open parts (10, 30), each fully or partly removable tear-open part (10, 30) being arranged to be fully or partly separated from said peripheral edge portion (5) along a contour line (8). A packaging container comprising the sealing disc is also disclosed.
The present disclosure pertains to method of forming a paperboard packaging container (1) from a rectangular body blank (2), the method comprising the following steps: a) providing a rectangular body blank (2), the body blank (2) having a longitudinal direction (L) and a transverse direction (T), the body blank (2) having a first transverse edge (3) and a second transverse edge (4) and a first and a second side edge (5,6), the body blank (2) being made from a laminate sheet material comprising a carton substrate layer, the body blank comprising two or more parallel crease lines (9), the parallel crease lines (9) each being arranged with a distance (d2) of from 2 mm to 15 mm from the second side edge (6); b) forming a tubular container body (12) from the rectangular body blank (2), the container body having a first body opening (14) and a second body opening (16); c) sealing together the first and the second side edge (5,6) in a but-to-but seal using a sealing strip (22) having a sealing strip width (ws), the sealing strip (22) extending over a non-creased area (23) bridging the first and the second side edge (5,6); d) presenting the tubular container body (12) to a crease line forming station (24) and providing the non-creased area (23) bridging over the sealing strip (22) with two or more bridging crease lines (21) such that a bridging crease line area (25) is formed; e) closing the second body opening (16) by pressing a paperboard disc (26) into the second body opening (16); f) forming a curled second edge (28) by folding or rolling the second end (15) of the container body wall (17) inwardly; g) filling the packaging container (1) with bulk solids; h) closing the upper body opening (14); i) wherein steps h) and subsequently step g) could alternatively come after step d). The present disclosure also relates to a paperboard packaging container.
A composite container (300) comprising a tubular body (301), the tubular body (301) having an inside surface (306) and an outside surface (307) and a container opening (337) at a top end (338) of the tubular body (301), the tubular body (301) being made from a laminate sheet material (8) comprising a carton layer (10, 310) and an inside polymeric layer (11, 311), the inside polymeric layer (311) being arranged at an inside surface (306) of the carton layer (10, 310), the composite container (300) comprising a top rim (339) surrounding the container opening (337), the top rim (339) being attached to a top end portion (340) of the tubular body (301) at the top end (338) of the tubular body (301), and a lid (342) for opening and closing the composite container (300). The composite container (300) comprises a separation arrangement (312), for separating the top end portion (340) of the tubular body (301) together with the attached top rim (339) from a main part (351) of the tubular body (301), the separation arrangement (312) comprising a tear strip (313) comprising a portion of the inside polymeric layer (311), the tear strip (313) being formed between a pair of inside score lines (314, 315) which are arranged in the laminate sheet material (8) from the inside surface (306) of the tubular body (301) through only a part of a thickness (t) of the laminate sheet material (8), the inside score lines (314, 315) and the tear strip (313) extending in a circumferential direction of the tubular body (301),adjacent the top rim (339).
B65D 5/54 - Lignes de moindre résistance facilitant l'ouverture des réceptacles ou leur division en parties séparées, par découpage ou déchirement
B65D 3/22 - Réceptacles rigides ou semi-rigides ayant un corps ou des parois périphériques de section transversale courbe ou partiellement courbe, réalisés en enroulant ou courbant du papier sans plier selon des lignes définies avec double paroisRéceptacles rigides ou semi-rigides ayant un corps ou des parois périphériques de section transversale courbe ou partiellement courbe, réalisés en enroulant ou courbant du papier sans plier selon des lignes définies avec des parois incorporant des chambres à airRéceptacles rigides ou semi-rigides ayant un corps ou des parois périphériques de section transversale courbe ou partiellement courbe, réalisés en enroulant ou courbant du papier sans plier selon des lignes définies avec des parois faites en matériau stratifié
B65D 3/26 - Dispositifs d'ouverture incorporés dans ou fixés aux réceptacles
B65D 5/02 - Réceptacles de section transversale polygonale rigides ou semi-rigides, p. ex. boîtes, cartons ou plateaux, formés en pliant ou montant un ou plusieurs flans de papier en pliant ou montant un seul flan pour former un corps tubulaire avec ou sans pliage subséquent, ou par addition d'éléments séparés, pour fermer les extrémités du corps
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