ES2878264T3 - Closing member and packaging system - Google Patents

Abstract

Closure member (20) for use in closing a container (10), the closure member (20) having, along a longitudinal direction (L), a tab portion (21) configured to be inserted through through a slot (14) in a wall (11b, 13') of the container (10) by movement along the longitudinal direction (L), and a base portion (22), in which the base portion ( 22) has a width (W22) along the longitudinal direction (L) that is greater than a maximum width (W21) of the tongue portion (21) along the longitudinal direction (L), in which the tongue portion (21) comprises an attachment portion (23) configured to connect by means of adhesive to an external surface (11b) of the container (10), wherein the attachment portion (23) is provided at a distance (D23) of the base portion (22), and characterized in that the tongue portion (21) further comprises a tear portion (24) extending through the tongue portion (21), whereby the tear portion (24) is configured to tear to divide the tongue portion (21) into a first part comprising the joint portion (23) and a second part connected to the base portion (22).

Description

DESCRIPTION

Closing member and packaging system

Field of the invention.

The invention relates to a closure member for use in closing a container.

The invention also relates to a packaging system comprising a container provided with a groove extending through a wall of the container and a closure member.

The invention is especially suitable for providing packaging for use in electronic commerce. Within e-commerce, there is often a need for a high degree of flexibility, as packaging should be useful for all the different unique customer orders. E-commerce packaging also has high requirements on efficient packaging and logistics, brand development, and consumer experience.

Technical background

As mentioned above, within e-commerce there are high requirements for flexibility, efficient packaging and logistics, branding, and consumer experience. This places great demands on the packaging design.

Others have tried to address these problems.

US 6,047,883 says, for example, that a package is provided which is easily formed, loaded and sealed by the packer and which can be easily opened and closed by the consumer. The container is provided with a tab which is provided with a snap closure button. The different parts of the tab fold over one another so that the counterparts of the snap button closure are aligned with each other. The tab is attached to the container in this collapsed state. It is disclosed that a retracted tab portion is removed as a kind of tamper evident upon initial opening of the package. However, this design requires complex tongue and packaging assembly. This makes it unsuitable for many applications, such as e-commerce, where there is a high demand for flexibility.

Document FR621033 discloses a closure for cardboard or shipping boxes, that is, for cardboard envelopes that are used to enclose merchandise during shipping, and whose paper is completely finished after opening for the first time. This document discloses the use of a provided tab that is stapled to the side of the container using a metal staple. However, this packaging is not suitable for e-commerce as the use of metal staples presents the risk of cutting the consumer. Furthermore, it is disclosed that the tab must be cut to open the package, which presents an even greater risk of the consumer accidentally cutting or damaging the goods within the package. Therefore, this packaging is not suitable for packaging and transporting goods to consumers, as is normally the case with electronic commerce.

US 551,477 discloses packaging in which a tab is pushed through a first slot on one side of the package and then through a slot in a lid and then again through a second slot on the side of the package. . This is a complicated procedure and does not provide a sufficient blocking effect to be used in the transport of goods according to current standards.

JPS4852797U discloses a tab which is provided at one end with an insert portion and at the other end provided with a connecting portion. The insert portion has two collapsible wings that must be bent to allow the insert portion to be inserted into a slot. The wings are then folded back to prevent the insertion portion from being removed again. The joining portion is provided with a double layer, where a first half of the double layer must be folded towards an opening in the joining portion. This folding of a first half of one of the layers is carried out in such a way that the end of the folded portion partially overlaps the opening. Thus, the edge of the folded portion can be grasped at a later stage. However, this is too complex an installation procedure. It is too difficult and there is a great risk that it will be done incorrectly. Also, it is difficult for a consumer to get hold of the edge. Especially in case the tongue installation was done in the wrong way.

Therefore, there is a need in the market to provide a new type of packaging that addresses the requirements related to flexibility, efficient logistics and packaging, branding and consumer experience.

Summary of the invention

It is an object of the invention to provide an improved packaging solution that addresses the above requirements.

This object has been achieved by a closure member for use in closing a container, the closure member having, along a longitudinal direction, a tab portion configured to be inserted through a slot in a wall. of the container by a movement along the longitudinal direction and a base portion,

wherein the base portion has a width along the longitudinal direction that is greater than the maximum width of the tongue portion along the longitudinal direction,

wherein the tab portion comprises a bonding portion configured to adhesively connect to an external surface of the container,

wherein the attachment portion is provided at a distance from the base portion, and

wherein the tab portion further comprises a tear portion that extends through the tab portion, such that the tear portion is configured to tear to divide the tab portion into a first part comprising the tab portion. junction and a second part connected to the base portion.

By designing the packaging solution so that it is possible to provide a separate closure member and by designing the separate closure member as specified above, the problems of a high degree of flexibility, efficient logistics and packaging, development have been successfully addressed. brand and consumer experience. Since the closing member is a separate member, it is possible to use it for branding purposes. This, in turn, makes it possible to use the same basic packaging for different brands, which in turn makes it cost-effective and facilitates logistics. The number of comparatively large basic packages that must be kept in stock and available at all times can be reduced. It is possible to provide the uniqueness or brand development to the space-saving closure members.

The design of the closure members with a tongue portion and a wider base portion makes it easy to insert into a slot in a wall of the basic package. The person packer can simply push the tab portion through the slot and then continue this sliding of the tab portion through the slot until the base portion prevents any further sliding of the tab portion. It is easy to learn, does not require any precise handling, and requires no tools.

The use of an adhesive reduces the risk of injury to the person who can package the container and to the consumer.

The provision of a tear-off portion makes the container easier to open and has a positive impact on the consumer experience. The positioning of the tear portion between the attachment portion and the base portion provides a distinct opening function and also contributes to making it possible to design the closure member as specified in the present application. The tear portion can be one or more perforations that extend the width of the tab. The tear portion may be a tear cord that extends the width of the tongue.

In addition, it is also possible to provide an additional closure member for the consumer to use in case they wish to return the merchandise. Again, the simple installation procedure provided by the closure member design has an additional positive impact on the consumer experience. Furthermore, both the primary and additional closure members can be installed without the need for specific tools or complicated handling of the closure member.

Other advantages of providing the closure member as a separate member are, for example, that it is possible to use a different material, such as a harder material, a more exclusive material, an easier to print material, than it is convenient to use for the basic packaging. The basic packaging material can be chosen due to other technical requirements or due to cost effectiveness.

It should be noted that the exterior of the container need not be the exterior of the container once transported. In this context, the exterior is intended to refer to the state of the container when the closure member is attached to the container. This exterior may be more or less covered at a later stage by an additional flap, by an outer package such as another box, or by a film, such as a plastic film that covers the package totally or partially.

Preferred embodiments appear from the dependent claims and the description.

The bonding portion may be provided with a pre-applied adhesive. An advantage of this is that there is no need to provide a glue dispenser at the place where the goods are packed. This reduces the risk of the glue spilling onto the packages, the goods or the person who packages them. It is also especially beneficial in case the consumer wishes to make use of the additional closure member to reseal the container.

The bonding portion may comprise a removable cover layer at least partially, preferably completely, covering the previously applied adhesive. This reduces the risk of the closure members inadvertently sticking to each other or to the container during insertion of the tab portion through the slot. The cover layer is preferably designed so that it can remain on the adhesive when the The tab portion is inserted through the slot and then removed once the packer has finished and is ready to close the pack.

The tear portion may comprise a grasp portion so that the tear portion can be torn by the user holding the grasp portion. The grip portion may be, for example, a free end of a tear cord or a part of the tongue portion, such as a part at a side edge of the tongue portion, being easily accessible allowing the consumer to grip it. using a pressure grip.

The grip portion is preferably configured to be collapsible in an orientation away from the outer surface of the container. This provides the consumer with a good grip on the grip portion.

The removable cover layer may comprise a grip portion, so that the cover layer can be removed from the adhesive by the user by holding the grip portion of the cover layer. The gripping portion may be, for example, a small extra length of the cover layer that allows the person who packages the goods or the consumer who reseals the package to grip it with a pressure grip.

The gripping portion of the cover layer is preferably configured to be collapsible in an orientation away from the adhesive. This makes it easier for the person packing the goods or the consumer to get a good grip on the gripping portion.

The tear portion may comprise two perforations that extend through the tab portion. The two perforations preferably extend at a distance from each other thus forming a tear band that extends through the tab portion. This is an effective way of providing a tear band that extends through the tab portion. The material between the two perforations is removed when the tear portion or tear strip is torn. Two perforations can also be used to form a gripping portion on one or both side edges of the tongue portion. By making perforations by more or less completely cutting the material along a short distance that extends inward from the lateral edge of the tongue portion, it is easy for the consumer to peel off a small fin or grip portion formed between the two perforations. . Alternatively, the grip portion can be formed at a more central point as viewed across. A small amount of material can be removed in a central part of the tear portion so that two tear bands are formed extending in opposite directions outward from the central portion. The perforations may be near the center so that it is easy for the consumer to peel off a small flap or grip portion from each of the two tear strips. An advantage with a central grip portion is that it reduces the risk of objects accidentally catching the grip portion during transportation and handling. An advantage of a gripping portion on a side edge of the tab portion is that it is easy for the consumer to grasp and can be torn off with a single movement.

The tab portion may be provided with an insert portion at one end, as seen along the longitudinal direction, opposite to the base portion, wherein the insert portion may have a width that tapers along of the longitudinal direction. By providing a tapering width, it is easier for the person packing the goods or the consumer to insert the closure member into the slot. It also reduces the risk of damage to the closure member and the basic package.

The base portion may have abutment edges that are oriented in the longitudinal direction and formed by portions of the base portion outside the width of the tongue portion. This provides a different final position for insertion of the closure member into the slot. The abutment edges preferably extend at right angles to the longitudinal direction. This further reinforces the distinctive final position.

The closure member is paper-based, such as formed from paper, cardboard, card, or wallpaper, or polymer-based. They are suitable materials as, for example, they are cost-effective, they are suitable for adhesive bonding to other surfaces or materials, they are suitable for printing (branding) and they can be folded in case the closure member is Spread through the creases of the basic pack.

The closure member is a flat member, preferably having a thickness less than 25%, more preferably less than 10%, of the maximum width of the tab portion. In this way, the closure member can provide great strength and stability compared to material consumption. It also facilitates folding in case the closure member extends through the pleats of the basic package.

The above object has also been achieved by a packaging system comprising a container provided with a groove extending through a wall of the container and a closure member of the type that has been discussed above and that will be discussed in detail below. . The advantages of such a packaging system have been discussed above in connection with the closure member and reference is made to that discussion.

The slot may have a width on one side that allows the tongue portion to be inserted through the slot and, on the other hand, prevents the base portion from passing through the slot. This provides an easy and secure installation of the closure member in the slot. Preferably, the groove has a width that is only marginally greater than the width of the tongue portion. Thus, the lateral position of the closure member is well defined, which will improve the stability of the container.

The slot may extend along a fold line of the container, around which fold line the container is adapted to fold to form first and second wall portions which are angled relative to each other. It can be seen that along may, but not necessarily, mean that the groove is arranged in the vicinity of the fold line. Together can refer to orientation. With this orientation of the slot, it is possible to fold the closure member over a fold of the basic container by folding the closure member along a line extending transverse to the longitudinal direction. Folding a band member crosswise will make the band stretch the same way on both sides of the fold, making it stiff and making it easy to predict which direction to pull the band, making it easier to pull the band. task of the person packing the goods to achieve a perfect fit of the closure member in the container.

The groove is preferably formed in the vicinity of a fold line, around which the container is adapted to fold to form first and second wall portions that are angled relative to each other, so that the portion The base may lie flat along the first wall portion and abut the second wall portion with abutment edges that are oriented in the longitudinal direction and are formed by portions of the base portion outside the width of the tongue portion. In this way, the abutment edges will abut a hard portion of the basic package.

The packaging system may further comprise an additional closure member, wherein the additional closure member is configured to be inserted into the slot to reseal the container after the first closure member has been torn and removed from the slot. . This additional closure member can, for example, be included among the goods within the package. Alternatively, it can be provided in a pocket on the package.

Brief description of the figures

The invention will be described by way of example in more detail, with reference to the accompanying schematic figures, which show a presently preferred embodiment of the invention.

Figure 1 discloses a container adapted to be closed using a closure member, for example of the type disclosed in Figures 2a-c.

Figures 2a-c disclose a closure member in which Figure 2a is a first plan view, Figure 2b is a side view, and Figure 2c is a second plan view opposite the plan view of Figure 2a. . Figures 3a-f disclose various steps for closing a container using a closure member.

Figures 4a-b disclose a package in which Figure 4a shows it as received by a recipient and Figure 4b shows the initial opening procedure.

Figures 5a-c disclose a container adapted to be closed using a closure member.

Detailed description of the preferred embodiments

As shown in Figure 1, a container 10 to be closed by a closure member 20 (shown in Figures 2a-c) typically comprises a plurality of side walls 11a-d, a bottom wall 12, and an upper wall 13. The The design and the interconnections between the side walls 11a-d and the lower part 12 can be of any type. It can, for example, be designed by forming the side walls from a blank with four panels side by side with a fin formed as a small fifth panel glued to the inside of the first panel. The bottom wall 12 may be of the self-erecting type formed by diagonally folded bottom wall portions. The lower portion 12 may be formed by a panel provided with fins along the side edges of the panel, the fins are adapted to stick to the associated interiors of the side walls. Other types of bottom wall designs are well known to the person skilled in the art and no further description thereof is necessary. Furthermore, the actual design of the bottom wall 12 and the interaction with the side walls 11a-d can be chosen without any direct impact on the possibilities of designing the closure member 20 as desired.

The package 10 is provided with a slot 14. The slot 14 is a through slot 14 that extends through a wall 13 of the package 10. The slot 14 has a width W ¹⁴ and a height H ¹⁴ . These dimensions are chosen in relation to closure member 20 and will be described in more detail below.

Before delving into the details of the slot 14, some basic component of the closure member 20 should be introduced. The closure member 20 has, with reference to Figures 2a-c, along a longitudinal direction L, a portion of tongue 21 and a base portion 22. It can be said that the closure member 20 has successively along a longitudinal extension of the closure member ^{2 0} , a tongue portion ²¹ and a base portion ^{2 2} .

The tab portion 21 is configured to be inserted through the slot 14 in the front wall 11b of the container by movement along the longitudinal direction L. The closure member 20 is basically flat and has, as shown in FIG. Figure 2b, a material thickness t. The base portion 22 has a width W ²² in the transverse direction T, through the longitudinal direction L, is greater than a maximum width W ²¹ of the tongue portion 21 in the transverse direction T. It can be seen that, in the embodiment disclosed, the width W ²¹ is, except for an insert portion 21b, constant along the longitudinal direction L. An advantage of this is that the tab portion 21 is easy to insert into the groove 14.

The base portion 22 has abutment edges 22a-b that are oriented in the longitudinal direction L. The abutment edges 22a-b are formed by portions of the base portion 22 outside the width W ²¹ of the tab 21. The abutment edges extend at right angles to the longitudinal direction L.

The tab portion 21 comprises an attachment portion 23 which is configured to be adhesively connected to an external surface of the container 10. As shown in Figure 2c, the attachment portion 23 is provided at a distance D ²³ from the base portion 22. Attachment portion 23 is provided with a pre-applied adhesive. The bonding portion 23 further comprises a removable cover layer 25 at least in part, preferably completely covering the previously applied adhesive. The cover layer 25 is designed so that it can be held on the adhesive when the tab portion ²¹ is inserted through the slot 14 and then removed once the person packing the goods has finished and is ready to close. container ^{1 0} .

The tab portion 21 further comprises a tear portion 24 that extends through the tab portion 21. The tear portion 24 is configured to tear to divide the tab portion 21 into a first part comprising the attachment portion 23 and a second part connected to the base portion 22 (this is indicated in figure 4b).

More details of the closure member 20 will be explained later.

Returning to container 10, slot 14 may, as shown in Figure 1, extend along a fold line FL of container 10. The container is adapted to fold around fold line FL to form a first portion wall (in this case the upper wall 13) and a second wall portion (in this case the front wall 11b). The two wall portions 13, 11b are angled relative to each other. In the embodiment of figure 1, the front wall 11b forms an angle of 90 ° with respect to the upper wall 13. However, other angles are conceivable. The front wall 11b may, for example, be formed by an upper portion and a lower portion inclined relative to each other and pointing like an arrow in the opposite direction to the inside of the container. In such a case, the angle between the upper wall 13 and the upper portion of the front wall 11b would be a blunt angle than 90 °. It can be seen that the groove 14 is formed in a wall portion 13 'which, on the one hand, is intended to extend along the second wall portion ^{1 1} b, and on the other hand, it is integrally formed with the first portion of wall 13.

The groove 14 is preferably formed in the vicinity of the fold line FL. In the embodiment of Figure 1, the slot 14 is positioned so that one of its edges extends into the fold line FL. As shown in Figure 3a-b, the base portion 22 can thus be laid flat along the first wall portion (the inside of the upper wall portion 13) and abuts the second wall portion ( the inside of the front wall portion 11b in this box formed by the inside of the fin 13 '). When the container 10 is folded, the slot 14 will extend with an edge flush with the inside of the upper wall portion 13 and an edge a distance H ¹⁴ downward along the front wall 11b. The front wall panel 11b is also provided with a recess 15 having a width W ¹⁵ and a height H ¹⁵ corresponding to the width W ¹⁴ and height H ¹⁴ of the slot 14.

The widths W ¹⁴ , W ¹⁵ of the slot 14 and the recess 15 are chosen in such a way as to allow the tab portion 21 to be inserted through the slot 14 (and reside in the recess 15) and, on the other hand, avoid that the base portion passes through slot 14 (and recess 15). Preferably, slot 14 (and preferably also recess 15) has a width W ¹⁴ , W ¹⁵ that is only marginally larger than width W ²¹ of tongue 21. Preferably, slot 14 (and optionally also recess 15) has a height H ¹⁴ , H ¹⁵ that is only marginally greater than the thickness of the material t of the tongue portion 21. It can be seen that there is material on all four sides of the groove 14, thus allowing the groove to 14 form a guide that guides the tongue portion 21 in any direction in the plane of the wall 11b. It can also be seen that the recess 15 could also be designed as a slot.

With reference to Figures 3a-f, the closure of container 10 is disclosed.

As shown in Figure 3a, the closure member 20 is inserted into the slot 14. The tab portion 21 and the base portion 22 can be laid flat along the first wall portion (within the upper wall 13 ).

As shown in Figure 3b, the closure member 20 is inserted into the slot until the abutment edges 22a-b abut the second wall portion (the interior of the front wall 11b formed by the fin 13 '). The lid is then closed as indicated by the arrow in Figure 3b and as shown in Figure 3c. Alternatively, the person packing the goods may close the lid first and then pull the closure member 20 until the abutment edges 22a-b abut the second wall portion. It can be seen that the adhesive 23 and the cover layer 25 are placed on the surface of the tongue portion 21 which is oriented upwards in Figure 3b, that is, on the surface of the tongue portion 21 which will abut the exterior. of the front wall 11b when the closure member 20 is folded (as indicated in Figure 3e) along the front wall 11b.

Merchandise is loaded at any point before the lid is closed.

When the container is in the position shown in figure 3c or 3d, the person packing the goods will remove the removable cover layer 25 and thus expose the previously applied adhesive. The removable cover layer 25 may comprise a grip portion 25b, so that the cover layer 25 can be removed from the adhesive by the user by holding the grip portion 25b of the cover layer. The gripping portion 25b can be, for example, a small extra length of the cover layer 25 which allows the person packing the goods or the consumer to reseal the container to grip it using a pressure grip. The gripping portion 25b of the cover layer is preferably configured to be foldable in an orientation opposite to the adhesive 23.

Next, the person who packages the goods will attach the attachment portion 23 to the outside of the package 10 as shown in Fig. 3e.

Shown in Figure 3f is a container 10 closed with closure member 20 and ready for shipment.

The consumer who has purchased the goods in package 10 will receive a package 10 as shown in Figure 4a.

The consumer can simply tear the tear portion 24 as shown in Figure 4b. The tear portion may comprise a grip portion 24b, so that the tear portion 24 can be torn by the user holding the grip portion 24. The grip portion may be, for example, a free end of a rope tear or a part of the tab portion, such as a part at a side edge of the tab portion, that is easily accessible allowing the consumer to grasp it using a pressure grip. Such gripping portion 24b is formed by allowing perforations to extend through the lateral edges of tab portion 21. Gripping portion 24b is preferably configured to be collapsible in an orientation opposite to the outer surface of container 10 (this it is indicated by the arrow in figure 4b). This makes it easier for the consumer to get a good grip on the gripping portion 24b.

As shown in Figures 2a-c, the tear portion 24 may comprise two perforations 24 ', 24 "which extend through the tab portion 21. The two perforations 24', 24" extend a distance D ²⁴ together thereby forming a tear band extending through the tab portion 21. As shown in Figure 4b, the material between the two perforations 24 ', 24 "is removed when the tab portion is torn. tear 24 or the tear strip. Two perforations 24 ', 24 "can also be used to form a grip portion 24b on one or both side edges of the tab portion 21. When making the perforations more or less completely cutting the material Over a short distance extending inward from the lateral edge of the tab portion 21, it is easy for the consumer to peel off a small fin or grip portion 24b formed between the two perforations 24 ', 24 ". Alternatively, the gripping portion may (as indicated by dashed lines 24b ') be formed at a more central point as seen along width W ²¹ . A small amount of material can be removed in a central part of the tear portion so that two tear bands are formed extending in opposite directions outward from the central portion. The perforations may be close to the central portion such that it is easy for the consumer to peel off a small flap or grip portion 24b 'from each of the two tear strips.

As shown in Figure 2a-c, the tab portion 21 may be provided with an insert portion 21b at one end, as viewed along the longitudinal direction L, opposite the base portion 22. The portion of insert 21b may have a width W ²¹ b tapering along the longitudinal direction L.

The closure member 20 may be paper-based, such as formed from paper, cardboard, cardboard, or wallpaper, or polymer-based.

The closure member 20 is a flat member, preferably having a thickness t less than 25%, more preferably less than 10%, of the maximum width W21 of the tab portion 21.

The packaging system may further comprise an additional closure member 30. The additional closure member 30 is of the same basic type as the first closure member 20. The additional closure member 30 is configured to be inserted into the slot 14 for reattachment. closing the package 10 after the first closure member 20 has been torn and removed from the slot 14. This additional closure member can, for example, be included among the goods within the package (as indicated in Figure 3a). Alternatively, it can be provided in a pocket on the package.

In Figures 5a-c, a second type of container 10 is disclosed. In this design, the slot 14 is formed near a fold line FL formed between a front wall 11b and a bottom wall 12. It can be seen that this bottom wall 12 may be the bottom end wall 12 or it may be intended to form an upper wall 13 in the finally folded package. The latter can be the case of the so-called hinged box or collapsible container. The latter is indicated in Figures 5b and 5c. Once the goods have been placed in the container shown in figure 5a, the lid 13 is folded down as indicated by arrow A in figure 5b and then the container 10 is turned upside down as indicated by arrow B.

The panel 13 "is then folded to abut the front wall 11b and finally the joint portion 23 is attached to the outside of the panel 13".

It is contemplated that there are numerous modifications of the embodiments described herein, which are still within the scope of the invention as defined in the appended claims.

It can be seen, for example, that the closure member 20 may extend over more than one wall of the container. It can extend, for example, from a fold line between a first and a second wall, over the entire height of the second wall and over the opposite fold line between the second wall and a third wall and then join the third wall.

Claims (15)

1. Closure member (20) for use in closing a container (10), the closure member (20) having, along a longitudinal direction (L), a tab portion (21) configured to be inserted through a slot (14) in a wall (11b, 13 ') of the container (10) by movement along the longitudinal direction (L), and a base portion (22), wherein the base portion (22) has a width (W ²² ) along the longitudinal direction (L) that is greater than a maximum width (W ²¹ ) of the tab portion (21) along the longitudinal direction (L), wherein the tab portion (21) comprises a connecting portion (23) configured to connect by means of adhesive to an external surface (11b) of the container (10), wherein the attachment portion (23) is provided at a distance (D ²³ ) from the base portion (22), and characterized in that the tab portion (21) further comprises a tear portion (24) extending through through the tab portion (21), such that the tear portion (24) is configured to tear to divide the tab portion (21) into a first part comprising the joint portion (23) and a second part connected to the base portion (22). Closure member according to claim 1, wherein the joining portion (23) is provided with a pre-applied adhesive. Closure member according to claim 2, wherein the joining portion (23) comprises a removable cover layer (25) at least partially, preferably completely covering the previously applied adhesive. Closure member according to any one of claims 1-3, wherein the tear portion (24) comprises a grasp portion (24b), preferably configured to be foldable in an orientation opposite to the outer surface of the container (10), such that the tear portion (24) can be torn by the user holding the grasp portion (24b). Closure member according to claim 3 or 4, wherein the removable cover layer (25) comprises a gripping portion (25b), preferably configured to be foldable in an orientation opposite to the adhesive, so that the Cover layer (25) can be removed from the adhesive by the user holding the gripping portion (25b) of the cover layer (25). Closure member according to any one of claims 1-5, wherein the tear portion (24) comprises two perforations (24 ', 24 ") extending through the tab portion (21) . Closure member according to any one of claims 1-6, wherein the tab portion (21) is provided with an insert portion (21b) at one end, as seen along the direction longitudinal (L), opposite the base portion (22), wherein the insert portion (21b) has a width (W ²¹ b) that tapers along the longitudinal direction. Closure member according to any one of claims 1-7, wherein the base portion (22) has abutting edges (22a, 22b) that are oriented in the longitudinal direction (L) and are formed by portions of the base portion (22) outside the width (W ²¹ ) of the tongue portion (21), the abutment edges (22a, 22b) preferably extending at right angles to the longitudinal direction (L). A closure member according to any one of claims 1-8, wherein the closure member (20) is paper-based, such as formed by paper, cardboard, cardboard or wallpaper, or based on polymer. 10. Closure member according to any one of claims 1-9, wherein the closure member is a flat member (20), preferably having a thickness (t) less than 25%, more preferably less than 10%, of the maximum width (W ²¹ ) of the tongue portion (21). 11. Packaging system comprising a container (10) provided with a slot (14) extending through a wall (11b, 13 ') of the container (10) and a closure member (20) in accordance with a any of claims 1-10. Packaging system according to claim 11, in which the groove (14) has a width (W ¹⁴ ) that allows, on the one hand, the tongue portion (21) to be inserted through the groove (14) and on the other hand it prevents the base portion (22) from passing through the slot (14). Packaging system according to claim 11 or 12, in which the groove extends along a fold line (FL) of the container (10), around whose fold line (FL) the container (10) to be folded to form first and second wall portions (13, 11b) that are formed at an angle relative to each other. Packaging system according to any one of claims 11-13, in which the groove (14) is formed in the vicinity of a fold line (FL), around which fold line the container is adapted to folded to form first and second wall portions (13, 11b) that are angled relative to each other, so that the base portion (22) can be laid flat along the first wall portion (13 ) and abutting the second wall portion (11b, 13 ') with the abutment edges (22a, 22b) oriented in the longitudinal direction (L) and formed by portions of the base portion (22) outside the width (W ²¹ ) of the tongue portion (21). Packaging system according to any one of claims 11-14, further comprising an additional closure member (30) according to any of claims 1-10, wherein the additional closure member (30) It is configured to be inserted into the slot (14) to reseal the container (10) after the first closure member (20) has been torn and removed from the slot (14).