DISPENSING CARTON WITH FOLDED FLAPS FORMING THE CUTTING EDGE

Description

FIELD OF INVENTION

[0001] The present invention relates to a carton for receiving a roll of material, the carton having the features defined in the preamble of claim 1.

BACKGROUND ART

[0002] Rolls of material such as packing films, aluminium foils and other corresponding materials are packed in cartons from which the material can be pulled out and cut to a desired length by means of a cutting edge either integral with or secured to the carton. In known cartons, the cutting edge is generally located in the front wall or as an extension of the front wall. In such cartons, the edge is typically reinforced and stiffened by a metal or plastics material strip which provides a separate cutting means and supports the one-fold carton edge. When the carton is not being used for withdrawal of material from the roll the lid is located in the closed position with its edge strip pushed inside the carton and with the front wall leaving the cutting edge visible outside the carton. When the carton is used for dispensing material the lid is opened, the end of the rolled material is taken out and the desired length of the material is pulled out from the carton and the material is cut against the cutting edge. A drawback of this kind of a carton is that the cutting edge, which is in a single-fold thin front wall edge of the carton is easily broken or bent and the cutting action becomes difficult and its result often poor. A further drawback is that the carton must be closed when it is not used whereby the end of the rolled material is pushed inside the carton and the carton must first be reopened in order to enable more material to be pulled out.

[0003] In EP-A-369-346 there is disclosed a box having top panel 14, rear panel 16, bottom panel 18 and front partial panel 20 forming in its connection region with bottom panel 18 part of cutting edge. Top panel 14 extends into a flap panel 12 which is connected via perforated lines 47, 49 with parts 51 and 55 which extend into fold over flaps 57, 59 via partial serrations forming part of the cutting edge. Parts 57, 59 are secured on the outside of the front panel 20 and the end or free edges of parts 57, 59 are straight edges and do not form any part of the cutting means. The top panel 14 is continuous and must be raised to enable the rolled material to be pulled out.

[0004] In US 3,933,288 there is disclosed a blank comprising a front wall panel 11, a top wall panel 12, a rear wall panel 13, a base panel 14, and an overlap panel 15. The front panel 11 is provided via a tear line 26 with an extension 22, 23 to enable the front panel to be adhered to the base panel 14. Tear strip 22 is removable to permit material 33 from a roll to be withdrawn through the gap between panels 11 and 14.

DISCLOSURE OF THE INVENTION

[0005] The object of the present invention is to provide a packing carton which avoids the drawbacks described above and in which the end of the packed material is always at hand and from which it is easy to pull out material from the carton and wherein the cutting edge or blade is solidly fixed and thus facilitates the cutting action.

[0006] It is a characteristic feature of the carton according to the invention that the cutting edge is located in the corner between the lid and the front wall and that it is composed of two flap-like portions connected to the lid or the front wall, the first portion being connected via a fold line to the lid or the front wall and the second portion via a fold line to the first portion; that the cutting edge is provided in the outer edge of the second flap-like portion; that the portions constituting the cutting means are adhered to each other, and the front wall, or correspondingly the lid, has been adhered to the outer surface of the second flap-like portion; and that the lid is provided with an openable lid flap separated by a perforation and through the opening provided by the flap the material packed in the roll can be withdrawn from the carton and cut against the cutting edge.

[0007] The central idea of the invention is that the cutting edge is provided in the side seam edge of the carton which reinforces the cutting edge and makes it very sturdy and functionally effective, and the carton forms a closed casing around the axis of the material roll and the opening in the lid allows withdrawal of the material from the carton.

[0008] Also according to the invention there is provided a carton blank for forming a box or carton with a cutting edge for severing material when withdrawn from a roll when located in the carton, comprising a sheet of material having four adjacent interconnected portions having one or more fold lines and/or score lines and for defining in the assembled condition of the carton a front wall portion, an adjacent bottom wall portion and adjacent back wall portion and a cover or top wall portion, with said front wall portion and/or bottom wall portion and/or back wall portion and or top wall portion having at least one end wall portion extending therefrom and being delimited therefrom via a fold line or score line to form end walls of the carton; said top wall portion being perforated or otherwise formed to provide an openable lid or flap through which material may be withdrawn from a roll thereof when located in the assembled box in use. The blank is characterized in that an adhesion strip is provided as an extension of the top wall and/or the front wall portion to enable the top wall portion to be adhered to the front wall portion; and that a cutting edge or means for receiving a cutting edge is provided as an extension of the top wall portion or of the front wall portion along the edge where the top and front wall portions are to be adhered together.

BRIEF DESCRIPTION OF DRAWINGS

[0009] The invention is described further below, by way of example, with reference to the accompanying drawings, in which:-

Fig. 1 is a plan view of a carton blank for forming a carton and comprising a first embodiment of the invention;

Fig. 2 is a cross section through a carton assembled from the blank of Fig. 1;

Fig. 3 is a perspective view of a carton according to the invention prior to opening of the carton;

Fig. 4 illustrates the carton of Fig. 3 being readied for use;

Fig. 5 illustrates a length of rolled material which has been pulled out from the carton; and

Fig. 6 is a plan view of a carton blank for forming a carton and comprising a second embodiment of the invention.

[0010] A carton blank is illustrated in Fig. 1 comprising portions forming a front wall 1, a bottom wall 2, a back wall 3, and a lid 4; and flap-like portions 5a and 5b for forming a cutting edge 5, the latter of which includes the cutting edge 5 itself. The mentioned portions are interconnected in the order mentioned via fold lines extending in the assembled condition in the longitudinal direction of the carton. The ends of the wall portions 1 and 3, the ends of the bottom wall portion 2 and the ends of the lid 4 are provided with end flaps 1a - 4a and 1b - 4b which are assembled to form the ends of the carton after the carton has been otherwise already assembled. When assembling the carton, the flap-like portions 5a and 5b of the cutting edge 5 are folded along the fold line therebetween and glued to each other, and when the blank has been further folded, the front wall portion 1 is adhered to the outer surface of the flap-like portion 5b providing the actual cutting edge 5. The cross-section of the carton is now similar to the one illustrated in Fig. 2. The upper edge of the front wall 1 is provided with a tear strip 6 which extends past the cutting edge 5 in the direction of the front wall 1 of the carton and covers and protects the cutting edge 5 when the carton has not yet been prepared for use. When the carton has been glued by the manufacturer to form a tube the carton can be delivered to the customer for final assembly and use. In this phase, the carton is arranged as illustrated in Fig. 2 and the end portions or flaps of one end of the front wall 1, the bottom 2 and the back wall 3, for example the portions 1a - 3a, are folded inwards and, subsequently, the end portion 4a of the lid is folded and glued onto them in order to assemble this end of the carton. After this, a roll of the material 7 to be packed is pushed inside the carton via the open end and the end is closed by folding the end portions or flaps 1b - 3b in the order described above and finally the end portion or flap 4b of the lid is glued onto the end flaps in order to finish the carton. Now the carton is similar to the one illustrated in Fig. 3. As is shown in Figs. 1 and 3, the lid is provided with a flap portion 8 separable by a perforation 9; the flap portion can be opened by breaking the perforation 9. The carton is opened by gripping the flap portion 8 by a cut 10 provided at the center of the front edge flap and lifting it, thereby breaking the perforation 9. Subsequently, the covering strip 6 is torn off from the upper edge of the front wall 1 as shown in Fig. 4 thereby exposing the cutting edge 5 and, when the flap portion 8 of the lid 4 is opened as shown in Fig. 4, a desired amount of the material 7 can be pulled from the roll and out of the carton, as illustrated in Fig. 5, and drawn against the cutting edge 5 to cut the material. Figs. 1 - 5 illustrate a carton designed to be filled and assembled automatically by a machine. Fig. 6 illustrates a corresponding but modified carton blank in which the bottom 2 thereof is not provided with flaps but the end flaps 4a, 4b of the lid 4 are provided with locking flaps 4c, 4d designed to be pushed inside the carton. The carton assembled from such a blank is designed to be packed manually; however, the front wall 1 and the cutting edge 5 are glued automatically by the manufacturer.

[0011] The carton according to the invention provides several advantages. The carton as a whole is stiff as is the corner of the cutting edge 5 which has been glued and is thus very rigid. Also the cutting edge is supported from two directions by the sides of the carton forming an angle with each other. In this embodiment the cutting edge 5 is made of the same cardboard material as the carton itself and the cutting edge 5 is manufactured by hardening and covering it with lacquer or other corresponding suitable agent. Instead of this manner of reinforcing, a separate thin cutting blade made e.g. of metal or plastics material can be attached to the cutting edge, which blade can be secured, for example, between the flaps 5a and 5b of the cutting edge 5 or to said flaps by other mechanical means.

[0012] Further, the carton according to the invention provides the advantage that when the end of the material packed in the roll has been pulled out from the carton, it remains after the cutting action, between the flap 8 of the lid 4 and the rest of the lid 4, extending to the cutting edge 5 whereby it is readily available to enable further material to be pulled out when needed. Also, the carton is tidy in appearance and sturdy the whole time the roll of material is used as it is not necessary to open and close the carton and it is not torn or broken when the material is cut. In a further embodiment of the invention the protecting strip 6 may be dispensed with as in some cases such may be unnecessary.

[0013] The above description and the drawings serve as examples of embodiments of the invention, only, and it is by no means intended to be limited by them. The cutting edge 5 may be provided by many different ways and need not be composed of two flap-like portions folded against each other even if such is a preferred embodiment of the invention. The location and configuration of the end flaps may vary as needed and according to the way the carton is assembled. The form and method of opening of the flap in the lid may vary in many ways.

[0014] In the embodiments of the invention described above the cutting edge is composed of two flap-like portions connected via fold line to each other and to the lid which portions are glued together and thus make the cutting edge side stiff and at the same time serve as an adhesion strip for connecting the front wall and the lid to each other. The cutting edge could be provided also connected in the front wall via a fold line in which case the cutting edge would be parallel with the lid and would serve as an adhesion strip parallel with the lid in order to enable the lid to be connected to the front wall. Further, the cutting edge can be otherwise provided, for example, directly in the front wall without foldable flaps; this, however, presupposes that a separate corresponding adhesion strip is provided in the lid. Correspondingly, a reversed arrangement is also possible, according to which the cutting edge is provided in the edge of the lid and the separate adhesion strip in the front wall.

Claims

1. A carton for receiving a roll of material (7), the carton having wall portions providing a front wall (1), a bottom wall (2), a back wall (3), and a lid (4), and being interconnected in the said order via fold lines; and ends (4a, 4b) formed by end flaps connected to ends of the wall portions; whereby an edge of one of the wall portions is provided with a cutting edge (5) located in the corner between the lid (4) and the front wall (1) for cutting the material (7), the lid being provided with an openable flap separated by a perforation (9), the material (7) in the roll being withdrawable through the opening provided by the lid flap from the carton and cuttable against the cutting edge (5); characterized in that the cutting edge (5) is composed of two flap-like portions (5a, 5b) connected to the lid (4) or the front wall (1), the first portion (5a) of which is connected via a fold line to the lid (4) or the front wall (1) and the other portion (5b) via a fold line to the first portion (5a); that the cutting edge (5) is provided in or on the outer edge of the second flap portion (5b); that the portions (5a, 5b) composing the cutting edge (5) have been adhered to each other and the front wall (1) or correspondingly the lid (4) has been adhered to the outer surface of the second flap-like portion (5b).

2. A carton as claimed in claim 1, characterized in that a tear strip (6) extending beyond the cutting edge (5) to provide protection is provided in the side (1, 4) adhered to the second flap-like portion (5b).

3. A carton as claimed in claim 2, characterized in that the cutting edge (5) is provided by serrations in the edge of the second flap-like portion (5b) and which is reinforced by lacquer or corresponding material having been applied thereto.

4. A carton blank for forming a box or carton with a cutting edge for severing material when withdrawn from a roll when located in the carton, comprising a sheet of material having four adjacent interconnected portions (1 - 4) having one or more fold lines and/or score lines and for defining in the assembled condition of the carton a front wall portion (1), an adjacent bottom wall portion (2) and an adjacent back wall portion (3) and a cover or top wall portion (4), with said front wall portion (1) and/or bottom wall portion (2) and/or back wall portion (3) and/or top wall portion (4) having at least one end wall portion (1a - 4a; 1b - 4b) extending therefrom and being delimited therefrom via a fold line or score line (8a, 8b) to form end walls of the carton; said top wall portion (4) being perforated to provide an openable lid or flap through which material may be withdrawn from a roll thereof when located in the assembled box in use, characterized in that the top wall portion (4) or the front wall portion (1) is provided with an extension composed of two flap-like portions (5a, 5b) to enable the top wall portion (4) to be adhered to the front wall portion (1); that the first portion (5a) is connected via a fold line to the top wall portion (4) or the front wall portion (1) and the second portion (5b) is connected via a fold line to the first portion (5a); and that a cutting edge (5) or means for receiving a cutting edge is provided in or on the outer edge of the second flap portion (5b) in which edge the top and front wall portions (1, 4) are to be adhered together.

5. A carton blank as claimed in claim 4, characterized in that the first portion (5a) is connected to the top wall portion (4) and that a tear strip (6) is provided as an extention of the front wall portion (1) to protect the cutting edge (5) in a carton formed from the blank prior to use and removable to expose said cutting edge (5) for use.

6. A carton blank as claimed in any of claims 4 to 5, characterized in that the cutting edge (5) is provided by serrations in the sheet material which is reinforced by having lacquer or other material stiffening means applied thereto.

7. A carton whenever assembled from the carton blank as claimed in any of claims 4 to 6.

Ansprüche

1. Schachtel zur Aufnahme einer Rolle Material (7), welche Schachtel Wandabschnitte, die eine Vorderwand (1), eine Unterwand (2), eine Rückwand (3) und einen Deckel (4) bilden und in besagter Reihenfolge über Falzlinien miteinander verbunden sind; und Stirnwände (4a, 4b) aufweist, die durch mit den Enden der Wandabschnitte verbundene Klappen gebildet werden, wobei eine Kante eines der Wandabschnitte mit einer in der Ecke zwischen Deckel (4) und Vorderwand (1) angeordneten Schneidkante (5) zum Zertrennen des Materials (7) versehen ist, der Deckel mit einer durch eine Perforation (9) getrennte aufreißbaren Klappe versehen ist, das Material (7) in der Rolle durch die von der Deckelklappe gebildete Öffnung aus der Schachtel herausgezogen und gegen die Schneidkante (5) zertrennt werden kann; dadurch gekennzeichnet, daß sich die Schneidkante (5) aus zwei mit dem Deckel (4) oder der Vorderwand (1) verbundenen klappenartigen Abschnitten (5a, 5b) zusammensetzt, wobei der erste Abschnitt (5a) über eine Falzlinie mit dem Deckel (4) oder der vorderwand (1) verbunden und der andere Abschnitt (5b) über eine Falzlinie mit dem ersten Abschnitt (5a) verbunden ist; daß die Schneidkante (5) in oder an der Außenkante des zweiten Klappenabschnittes (5b) vorgesehen ist; daß die die Schneidkante (5) bildendenden Abschnitte (5a, 5b) miteinander verklebt sind und die Vorderwand (1) oder entsprechend der Deckel (4) an die Außenfläche des zweiten klappenartigen Abschnittes (5b) geklebt worden ist.

2. Schachtel gemäß Anspruch 1, dadurch gekennzeichnet, daß ein sich bis hinter die Schneidkante (5) erstreckender Abreißstreifen (6) als Schutz an der mit dem zweiten klappenartigen Abschnitt (5b) verklebten Seite (1, 4) vorgesehen ist.

3. Schachtel gemäß Anspruch 2, dadurch gekennzeichnet, daß die Schneidkante (5) durch Verzahnungen an der Kante des zweiten klappenartigen Abschnittes (5b) gebildet ist und sie durch Lack oder entsprechendes daselbst aufgetragenes Material verstärkt worden ist.

4. Schachtel-Zuschnitt zur Bildung einer Schachtel oder eines Kartons mit einer Schneidkante zur Zertrennung von Material wenn es einer in der Schachtel plazierten Rolle entnommen wird, bestehend aus einem Materialblatt mit vier benachbarten miteinander verbundenen Abschnitten (1 - 4) mit einer oder mehreren Falz- und/oder Trennlinien und zur Bildung in zusammengebautem Zustand der Schachtel einem Vorderwandabschnitt (1), einem benachbarten Unterwandabschnitt (2) und einem benachbarten Rückwandabschnitt (3) und einem Deckel oder Oberwandabschnitt (4), wobei der Vorderwandabschnitt (1) und/oder Oberwandabschnitt (2) und/oder Rückwandabschnitt (3) und/oder Oberwandabschnitt (4) mindestens einen Stirnwandabschnitt (1a bis 4a; 1b bis 4b) aufweisen, der sich von dort weg erstreckt und über eine Falzlinie oder Trennlinie (8a, 8b) daran grenzt, um Stirnwände der Schachtel zu bilden, welcher obere Wandabschnitt (4) perforiert ist und einen Deckel oder eine Klappe zum Aufreißen bildet, wodurch Material einer in der benutzten Schachtel angeordneten Rolle entnommen werden kann, dadurch gekennzeichnet, daß der obere Wandabschnitt (4) oder der Vorderwandabschnitt (1) mit einem aus zwei klappenartigen Abschnitten (5a, 5b) bestehenden Fortsatz versehen ist, um ein Verkleben des oberen Wandabschnitt (4) mit dem Vorderwandabschnitt (1) zu ermöglichen; daß der erste Abschnitt (5a) über eine Falzlinie mit dem Oberwandabschnitt (4) oder dem Vorderwandabschnitt (1) verbunden ist und der zweite Abschnitt (5b) über eine Falzlinie mit dem ersten Abschnitt (5a) verbunden ist; und daß eine Schneidkante (5) oder ein Organ zur Aufnahme einer Schneidkante in oder an der Außenkante des zweiten Klappenabschnittes (5b) vorgesehen ist, an welcher Kante die Ober- und Vorderwandabschnitte (1, 4) zusammengeklebt werden sollen.

5. Schachtel-Zuschnitt gemäß Anspruch 4, dadurch gekennzeichnet, daß der erste Abschnitt (5a) mit dem Oberwandabschnitt (4) verbunden ist und daß ein Abreißstreifen (6) als Fortsatz des Vorderwandabschnittes (1) vorgesehen ist, der die Schneidkante (5) an einer aus dem Zuschnitt vor der Anwendung gebildeten Schachtel schützt und der entfernt werden kann, um die Schneidkante (5) für die Anwendung bloßzulegen.

6. Schachtel-Zuschnitt gemäß einem der Ansprüche 4 bis 5, dadurch gekennzeichnet, daß die Schneidkante (5) durch Verzahnungen am Blattmaterial gebildet ist, das durch Auftragung von Lack oder anderem das Material versteifendem Mittel verstärkt worden ist.

7. Eine zu einem beliebigen Zeitpunkt aus dem Schachtel-Zuschnitt gemäß einem der Ansprüche 4 bis 6 zusammengestellte Schachtel.

Revendications

1. Carton pour recevoir un rouleau de matériau (7), le carton comportant des portions de parois définissant une paroi frontale (1), une paroi de fond (2), une paroi arrière (3), et un couvercle (4), et étant interconnectées dans l'ordre mentionné par l'intermédiaire de lignes de rainurage ; et des extrémités (4a, 4b) formées par des volets d'extrémité reliés aux extrémités des portions de parois; de manière qu'un bord de l'une des portions de parois soit muni d'un bord coupant (5) situé dans le coin entre le couvercle (4) et la paroi frontale (1) pour découper le matériau (7), le couvercle étant muni d'un volet ouvrable séparé par une perforation (9), le matériau (7) dans le rouleau pouvant être distribué à partir du carton au travers de l'ouverture ménagée par le volet du couvercle et découpable contre le bord coupant (5) ; caractérisé en ce que le bord coupant (5) se compose de deux portions du type volet (5a, 5b) reliées au couvercle (4) de la paroi frontale (1), dont la première (5a) est raccordée, via une rainure, au couvercle (4) ou à la paroi frontale (1), et l'autre portion (5b), via une rainure, à la première portion (5a) ; en ce que le bord coupant (5) est prévu dans ou sur le bord extérieur de la seconde portion du type volet (5b) ; et en ce que les portions (5a, 5b) composant le bord coupant (5) sont collées l'une à l'autre et la paroi frontale (1), ou de façon correspondante le couvercle (4), est collé à la surface extérieure de la seconde portion du type volet (5b).

2. Carton selon la revendication 1, caractérisé en ce qu'une bandelette d'arrachage protectrice (6) s'étendant au-delà du bord coupant (5) est prévue sur le côté (1, 4) collée à la seconde portion du type volet (5b).

3. Carton selon la revendication 2, caractérisé en ce que le bord coupant (5) est réalisé par des dentelures dans le bord de la seconde portion du type volet (5b) et celui-ci est renforcé par l'application de vernis ou d'un matériau correspondant.

4. Flan de carton pour former une boîte ou un carton avec un bord coupant pour prélever du matériau quand il est extrait par traction d'un rouleau lorsqu'il est situé dans un carton, comprenant une feuille de matériau présentant quatre portions interconnectées adjacentes (1 - 4) ayant une ou plusieurs lignes de rainurage et/ou de pliage et pour définir, à l'état monté du carton, une portion de paroi frontale (1), une portion adjacente de paroi du fond (2) et une portion adjacente de paroi arrière (3) et un couvercle ou une portion de paroi du sommet (4), avec ladite portion de paroi frontale (1) et/ou portion de paroi du fond (2) et/ou portion de paroi arrière (3) et/ou portion de paroi de sommet (4) ayant au moins une portion de paroi d'extrémité (1a - 4a; 1b - 4b) s'étendant à partir de là et étant délimitée, via une ligne de rainurage ou de pliage (8a, 8b), de manière à former des parois d'extrémité du carton ; ladite portion de paroi de sommet (4) étant perforée de manière à définir un couvercle ou un volet ouvrable au travers duquel on peut extraire du matériau à partir de son rouleau lorsqu'il est situé dans la boîte assemblée en service, caractérisé en ce que la portion de paroi de sommet (4) ou la portion de paroi frontale (19) est munie d'une extension composée de deux portions du type volet (5a, 5b) afin de permettre à la portion de paroi de sommet (4) d'être collée à la portion de paroi frontale (1); en ce que la première portion (5a) est raccordée, via une rainure, à la portion de paroi de sommet (4) ou à la portion de paroi frontale (1) et la seconde portion (5b) est reliée, via une rainure, à la première portion (5b) ; et en ce qu'un bord coupant (5), ou un moyen pour recevoir un bord coupant, est prévu dans ou sur le bord extérieur de la seconde portion du type volet (5a), bord dans lequel les portions de paroi frontale et du sommet (1, 4) adhèrent l'une à l'autre.

5. Flan de carton selon la revendication 4, caractérisé en ce que la première portion (5a) est reliée à la portion de paroi de sommet (4) et en ce qu'une bandelette d'arrachage (6) est prévue en tant qu'extension de la portion de paroi frontale (1) afin de protéger le bord coupant (5) dans un carton formé à partir d'une feuille, avant l'utilisation, et qui est amovible afin de dégager ledit bord coupant (5) lors de l'utilisation.

6. Flan de carton selon l'une quelconque des revendications 1 à 4, caractérisé en ce que le bord coupant (5) est défini par des dentelures dans le matériau en feuille lequel est renforcé par l'application du vernis ou d'un autre matériau durcisseur.

7. Carton lorsqu'il est assemblé à partir du flan de carton selon l'une quelconque des revendications de 4 à 6.

Drawing