OPENING SYSTEM FOR A CONTAINER, A METHOD OF MAKING THE SAME AND A CONTAINER COMPRISING THE OPENING SYSTEM

Abstract

An opening system for a container may be provided. The opening system may include a packaging material having an outside and an inside. The opening system may additionally include an injection molded opening element, wherein the injection molded opening element may be attached to the inside of the packaging material at a first point, and may extend from the inside of the packaging material and through to the outside of the packaging material. The injection molded opening element may be attached to the outside of the packaging material at a second point and may extend a distance from the second point for opening the container.

Claims

1-9. (canceled)

10. A method of producing an opening system for a container, the method comprising: providing a packaging material having an inside surface corresponding to an inside of the container, and an outside surface corresponding to an outside of the container; molding an injection molded opening element, the opening element including: a first connection point configured to be arranged on the inside surface of the packaging material, a second connection point configured to be arranged on the outside surface of the packaging material, and a connector portion configured to extend from the first connection point, through an opening in the packaging material, and to the second connection point; directly attaching the first connection point of the opening element to the inside surface of the packaging material; and directly attaching the second connection point of the opening element to the outside surface of the packaging material.

11. A method according to claim 10, further comprising: forming the opening in the packaging material; and arranging the connector portion of the opening element to extend through the opening.

12. A method according to claim 10, wherein the opening element includes: an extension element configured to extend outside of the container in a direction parallel to the packaging material from the second connection point towards the opening in the packaging material, wherein the extension element is configured to remove a seal of the opening in the packaging material.

13. A method according to claim 10 further comprising: molding an opening support, the opening support configured to be arranged on the outside surface of the packaging material and to encompass the opening element.

14. A method according to claim 10, further comprising laminating the package material with a laminate.

15. (canceled)

16. A method according to claim 10, further comprising: positioning the first connection point on an opposite side of the opening in the packaging material from the second connection point.

17. A method according to claim 12, further comprising: attaching an end of the extension element to the outside surface of the packaging material.

18. A method according to claim 12, wherein the extension element extends in a direction, at least in part, towards the first connection point.

19. A method according to claim 12, wherein the first connection point is spaced apart from the second connection point relative to a longitudinal axis of the extension element.

20. A method according to claim 13, wherein the opening support extends longitudinally between a first end thereof and a second end thereof, the first end of the opening support situated in proximity to the second connection point of the injection molded opening element and the second end of the opening support situated in proximity to the first connection point of the injection molded opening element.

21. A method of producing an opening system for a container, the method comprising: providing a packaging material having: an outside surface corresponding to an outside of the container, an inside surface corresponding to an inside of the container, and a container opening extending from the inside surface of the packaging material to the outside surface of the packaging material; molding an injection molded opening element, the opening element including: a first connection point configured to be arranged on the inside surface of the packaging material, a second connection point configured to be arranged on the outside surface of the packaging material, a connector portion configured to extend from the first connection point, through an opening in the packaging material, and to the second connection point, and an extension element configured for removing a closure from the container opening; directly attaching the first connection point of the opening element to the inside surface of the packaging material; directly attaching the second connection point of the opening element to the outside surface of the packaging material; and arranging the extension element outside of the container to extend from the second connection point, wherein the first connection point is spaced apart from the second connection point relative to a longitudinal axis of the extension element.

22. A method according to claim 21, wherein the extension element extends in a direction, at least in part, towards the first connection point.

23. A method according to claim 22, wherein the extension element has an end portion that extends in the direction towards the first connection point for a distance outside of the container and spaced apart from the outside surface of the packaging material.

24. A method according to claim 21, wherein the first connection point is positioned on an opposite side of the container opening from the second connection point.

25. A method according to claim 21, further comprising: attaching an opening support to the outside surface of the packaging material, the opening support at least partly encompassing the opening element, wherein the opening support extends longitudinally between a first end thereof and a second end thereof, the first end of the opening support situated in proximity to the second connection point of the opening element and the second end of the opening support situated in proximity to the first connection point of the opening element.

Description

BRIEF DESCRIPTION OF DRAWINGS

[0045] The above, as well as additional objects, features, and advantages of the present invention, will be better understood through the following illustrative and non-limiting detailed description of preferred embodiments of the present invention, with reference to the appended drawings, wherein:

[0046] FIG. 1 is a side view of an opening system for a container comprising a support structure without packaging material.

[0047] FIG. 2 is a bottom view of an opening system for a container comprising a support without packaging material.

[0048] FIG. 3 is a cross sectional side view of an opening system.

[0049] FIG. 4 is a top view of an opening system for a container with improved safety aspects.

[0050] FIG. 5 is a side view of an opening system for a container with a ring shaped end of the opening system.

[0051] FIG. 6 is a flowchart of a method of producing an opening system.

DETAILED DESCRIPTION

[0052] FIG. 1 illustrates an example of an opening system 10 for a container comprising a packaging material 1 having an outside and an inside. The opening system 10 further comprises an injection molded opening element 2, wherein the injection molded opening element 2 is attached to the inside of the packaging material 1 at a first point 20, and extends from the inside of the packaging material 1 and through to the outside of the packaging material 1. And, wherein the injection molded opening element 2 is attached to the outside of the packaging material 1 at a second point 30 and extends a distance from the second point 30 for opening the container. By having the injection molded opening element 2 attached to the inside and then extending out through the packaging material 1 and also being attached to the outside of the packaging material 1, the packaging material 1 will bear the major part of any force affecting the opening element 2. This makes the opening system 1 more robust against any faulty opening since any force acting on the opening element 2 will be transferred into the packaging material 1 instead of the opening element 2.

[0053] In an example, the second point 30 has an area which is chosen according to an opening force wanted and/or needed to open the opening system 10. In an example, the area is circular, square, rectangular and/or has an irregular shape. The area of the second point 30 can really have any shape since it is the amount of injected material at the second point 30 and how it is distributed on the outside of the packaging material 1 and attached to it that determines the force needed to tear open the opening system 10.

[0054] In an example, illustrated in e.g. FIGS. 1 and 3, the first point 20 and the second point 30 lies on a straight line which creates the opening force along the same line. In an example the straight line coincides with a weakest point(s) of a material, e.g. a material comprising strands of fibers and the straight line is parallel to the fibers. In other examples the first 20 and second point 30 are arranged at e.g. 45, 90, 135 or 180 degree difference. This allows the opening system 10 to create forces in other directions. In other examples, the other directions are not coinciding with the weakest point(s) of a material but are angled in relation to the weakest point. In an example the angle is chosen such that a desired opening force is achieved based on the combination of the angle and a structure of the selected packaging material 1. By having this angle in relation to the structure of the packaging material 1 it is possible to use a single opening system 10 on different materials and achieve a same opening force by simply angling the opening system 10.

[0055] In an example the injection molding is performed by hydrostatic pressure injection molding. In an example the material used for injection molding is a thermoplastic and/or a thermosetting polymer. In an example the material used is a plastic.

[0056] In an example, the packaging material 1 of is made paper, cardboard and/or plastic. By having the packaging material 1 being made of a paperboard or cardboard the opening system can be used in a recyclable package. In other examples, other types of materials are used since the packaging material 1 used only need to be mechanically weaker than that of the opening system 10 so that the opening element 2 is capable of tearing, shearing, breaking or otherwise open the packaging material 1. Thus, there need to be a delta in mechanical strength between packing material 1 and the material used for the opening system 10. In an example the packaging material 1 is laminated 15. In an example the packaging material 1 is pre-laminated 15, i.e. laminated 15 before the opening system 10 is applied.

[0057] In an example, the packaging material 1 comprises a pre-made opening there through. By having a pre-made opening in the packaging material 1 the injection molding process of the opening system 10 is simpler and have less potential issues since the risk of e.g. any packaging material 1 being mixed into the opening element 2 when it penetrates the packaging material 1 from the inside to the outside is removed. This mixture could weaken the opening element 2 so that is becomes weaker than the packaging material 1. Thus, the opening element 2 can potentially break before the packaging material 1 is opened. If the packaging material 1 is laminated 15 and comprises the pre-made opening there through, the laminate 15 will retain its structure and function and also acts as a seal together with the opening element 2 for any product inside the container. If no laminate is present the pre-made opening will be filled by the opening element 2.

[0058] In an example, illustrated in e.g. FIG. 1, the injection molded opening element 2 is attached parallel to the outside of the packaging material 1 from the second point 30 to where the opening element goes through to the inside of the packaging material 1. By having the opening element 2 being attached and running parallel to the packaging material 1 it will be even more affixed to the packaging material 1 and even better withstand any forces. In an example, the opening element 2 is attached parallel to the inside of the packaging material 1, illustrated in e.g. FIG. 2. In an example, the opening element 2 runs parallel with and is attached to both the inside and the outside of the packaging material 1.

[0059] In an example, the injection molded opening element 2 comprises a protrusion facing the inside of the packaging material 1 for penetrating through the packaging material 1 with. By having the opening element 2 comprising the protrusion it will more easily penetrate through the packaging material 1 with a cleaner cut or tear since the force from the opening element 2 will be initially localized to the protrusion and thus locally at the packaging material 1. In an example, the protrusion is a sharp edge of the opening element 2 and which extends all around the opening element 2 facing the packaging material 1 so that the opening element 2 initially penetrates all along its circumference when opening.

[0060] In an example, illustrated in e.g. FIG. 1, the opening system 10 further comprises an opening support 8 which at least partly encompasses the opening element 2. By having the opening support 8 at least partly encompassing the opening element at the outside of the packaging material 1, the opening support 8 acts as a counter force to the opening element 2 when being used to open the container, making it even easier to open the opening system 10. The opening support 8 also aids in any tearing of the packaging material 1 so that a cleaner visual appearance of the opening is created. In an example, the opening support 8 is arranged to encompass the opening element. In an example the opening element 2 is breakably attached by a connection to the opening support 8. By having the support structure 8 being attached to the opening element 2 the connection between them further strengthens the opening system 10 and its robustness. In an example the breakable connection is also a tamper evidence. In an example, two or more connections connect the opening element 2 to the opening support 8.

[0061] In an example, illustrated in FIG. 4, an end 40 of the extension of the opening element 2 from the second point 30 is attached to the outside of the packaging material 1. By having the end 40 of the extension attached to the packaging material 1 the opening system 10 comprises a tamper evidence. Additionally, the opening element 2 is secured form being accidentally or otherwise opened by something getting stuck at the end 40. In an example the end 40 is ball shaped, as illustrated in FIG. 4. Other examples of the end 40 such as having a waved surface, being ring shaped, are illustrated in e.g. FIGS. 1, 3 and 5. By having e.g. a waved surface at the end 40, the end 40 is easier to grip and maintain a grip for opening the opening system 10.

[0062] In an example, illustrated in FIG. 6, a method of producing an opening system 10 for a container comprising providing 510 a packaging material 1 having an inside and an outside is disclosed. The method further comprises molding 520 an injection molded opening element 2 being arranged on the inside of the packaging material 1 and on the outside, and extending through packaging material 1. And, attaching 530 the molded opening element 2 to the inside at a first point 20, and attaching 540 the molded opening element 2 to the outside at a second point 30.

[0063] In an example, the method further comprises pre-making an opening through the packaging material 1. In an example the packaging material 1 is laminated following the pre-made opening is made.

[0064] In an example, the injection molded opening element 2 is attached parallel to the outside of the packaging material 1 from the second point 30 to wherein the opening element 2 goes through the packaging material 1.

[0065] In an example, the method further comprises molding an opening support 8 arranged at the outside of the packaging material 1 and at least partly encompassing the opening element 2.

[0066] In an example, the method further comprises molding an opening support 8 arranged at the outside of the packaging material 1 and encompassing the opening element 2.

[0067] Although the above description has been made with reference to a food package, it should be readily understood that the general principle of is applicable to other packages as well. Additionally, the above has been discussed in relation to a packaging material, a pre-laminated packaging material and it is apparent for a skilled person that the above principles would also be valid for packaging material having other types of treatments for e.g. secure an oxygen barrier, prevents light or other common material treatments.

[0068] Further, the invention has mainly been described with reference to a few embodiments. However, as is readily understood by a person skilled in the art, other embodiments than the ones disclosed above are equally possible within the scope of the invention, as defined by the appended claims.