Packaging film and package using the same

Abstract

The application provides a packaging film comprising a base film and an attachment film. The attachment film is arranged on the base film, extends throughout the length of the base film, and comprises an attachment surface configured to attach to the base film, and an action surface opposite to the attachment surface. The packaging film is configured to be heat-sealed to itself or to a mating component independent of the packaging film to form a closed space between the two for containing contents, so that a functional portion is formed between the action surface and the base film or the mating component connected by heat sealing. The functional portion is configured to form an exhaust port when the contents in the space are heated to allow the gas in the space to escape from the exhaust port. The application also provides a packaging piece. With the packaging film and the packaging piece of the application, it is better applicable to heat liquid or solid-liquid mixed contents, and the problem of the packaging piece bursting due to internal overpressure during heating to cause contents splashing can be well avoided.

Description

Technical Field

[0001] This application relates to the field of packaging films, and more specifically to a heat-sealable packaging film. This application also relates to a package using this packaging film. Background Technology

[0002] With the fast pace of daily life, microwave heating and even cooking have become the preferred and convenient method for food preparation. This demand has led to the development of microwaveable bags. To facilitate microwave heating, microwaveable bags typically have pressure relief vents to prevent them from bursting at random locations due to excessive internal pressure during microwave heating, thus preventing the contents from splattering. These pressure relief vents can be designed to remain constantly open; examples of microwaveable bags with this feature include those used for making popcorn. However, such constantly open pressure relief vents are unsuitable for contents that are liquid or a mixture of solid and liquid. Utility Model Content

[0003] To address the aforementioned problems, this application provides a packaging film. The packaging film includes a base film and an attachment film. The attachment film is disposed on the base film and extends along the entire length of the base film. The width of the attachment film is smaller than the width of the base film. The attachment film includes an attachment surface configured to attach to the base film to form an attachment portion; and an active surface opposite to the attachment surface. The packaging film is configured to be heat-sealed either itself or independently of a mating component to form a closed space for containing contents. A functional portion is formed between the active surface and the base film or the mating component connected by heat sealing. This functional portion is configured to form an vent when the contents within the space are heated, allowing gas within the space to escape from the vent.

[0004] According to one embodiment of the packaging film of this application, the functional surface is not heat-sealed to the base film or the mating component, but forms an adhesive connection with the base film or the mating component, the adhesive connection being configured to break upon heating to form the vent.

[0005] Furthermore, a coating is provided on the working surface, the coating being configured to form an adhesive bond with the base film or the mating component during heat sealing.

[0006] According to another embodiment of the packaging film of this application, the base film includes a first layer and a second layer attached to each other, wherein the attachment film is embedded in the first layer and attached to the first layer or the second layer.

[0007] Furthermore, the second layer is a single-layer or multi-layer structure; and / or the attached film is a single-layer or multi-layer structure.

[0008] Alternatively, the packaging film is configured to be used in conjunction with an automatic roll wrapping machine, and / or the packaging film is suitable for microwave heating or steam heating.

[0009] Furthermore, the attachment portion is a structure formed by thermally fusing the base film and the attachment film at corresponding positions.

[0010] Furthermore, the attachment portion includes an adhesive layer disposed between the attachment surfaces of the base film and the attachment film.

[0011] This application also provides a packaging component. The packaging component includes: any of the aforementioned packaging films; and a mating member configured to be heat-sealed to the packaging film to form a lip, thereby forming the closed space between them, the functional portion being formed between the working surface of the attachment film of the packaging film and the mating member, and the vent being formed on the lip.

[0012] According to one embodiment of the packaging of this application, the packaging further includes a partition located between the packaging film and the mating component, the partition being configured to divide the enclosed space into at least two spatially isolated subspaces before heating the contents within the packaging, but allowing the at least two subspaces to be fluidly connected when the contents are heated.

[0013] Furthermore, the partition is a structure formed by heat-sealing the packaging film and the mating component, wherein the attachment film of the packaging film extends through the partition to form a second functional portion between the working surface of the attachment film and the mating component. The second functional portion is configured to be closed before heating the contents within the space to achieve the space isolation, and to open when heating the contents within the space to achieve the fluid communication.

[0014] Alternatively, the partition is in the form of a closure, the closure comprising: a first closure disposed on the base film of the packaging film at a position where the attached film is not disposed; and a second closure disposed on the mating member and configured to engage with the first closure to achieve spatial isolation before heating the contents within the space, and to open to achieve fluid communication when the contents within the space are heated.

[0015] Furthermore, the attachment film is positioned parallel to the partition and close to the lip edge of the package.

[0016] According to another embodiment of the packaging of this application, the packaging is in the form of a packaging bag, and the mating component is part of the base film of the packaging film or other components independent of the packaging film.

[0017] Alternatively, the packaging may be in the form of a box, and the mating components may be in the form of an open box.

[0018] The packaging film of this application and the packaging using the packaging film are better suited for heating liquid or solid-liquid mixtures, and can meet the hygiene requirements of the contents and ensure their integrity. It can also effectively avoid the problem of the packaging bursting due to excessive internal pressure during the heating process, which would cause the contents to splash. Attached Figure Description

[0019] The accompanying drawings are merely illustrative examples illustrating the technical solutions according to this application. The embodiments shown in the drawings are exemplary only and are not intended to limit the implementation of the subject matter of this application to these embodiments. In the drawings, similar or identical reference numerals are used to refer to similar or identical elements or components. In the drawings:

[0020] Figure 1 This is a top perspective view of the packaging film provided as a roll material according to this application.

[0021] Figure 2 It is along Figure 1 The diagram shown is a cross-sectional view of a first exemplary structure of a packaging film according to this application, obtained by line AA.

[0022] Figure 3 It is along Figure 1 The diagram shown is a cross-sectional view of a second exemplary structure of a packaging film according to this application, obtained by line AA.

[0023] Figure 4 It is along Figure 1 The diagram shows a cross-sectional view of a third exemplary structure of a packaging film according to this application, obtained by line AA, wherein the structure of the circled portion is shown enlarged in the diagram.

[0024] Figure 5 A top perspective view of a first exemplary structure of a package using any of the above-described packaging films according to this application is shown.

[0025] Figure 6A It is along Figure 5 The diagram shown is a cross-sectional view of the package obtained by line 6-6 in the heat-sealed state.

[0026] Figure 6B Is with Figure 6AA similar view shows the packaging with vents forming at the lip after heating.

[0027] Figure 7 It shows Figure 5 The image shows a perspective view of the package in a state of being ready to be filled.

[0028] Figure 8 This is a top plan perspective view of a second exemplary structure of the packaging according to this application.

[0029] Figure 9 It is along Figure 8 The diagram shows a cross-sectional view of the package obtained from line 9-9, where the partition is in a closed state.

[0030] Figure 10 Is with Figure 9 A similar view, where the divider is in the open position.

[0031] Figure 11 This is a perspective view of a third exemplary structure of the packaging according to this application.

[0032] Figure 12 This is a perspective view of a fourth exemplary structure of the packaging according to this application.

[0033] Figure 13 This is a top plan view of a fifth exemplary structure of the packaging according to this application.

[0034] Figure 14 It is along Figure 13 The diagram shows a cross-sectional view of the package obtained from line 14-14.

[0035] Figure 15 yes Figure 13 A top perspective view of the open box that works in conjunction with the packaging film in the package shown. Detailed Implementation

[0036] The specific structure of the packaging film and packaging components of this application will be described below with reference to the accompanying drawings.

[0037] Figure 1 This is a top perspective view of the packaging film 1 provided as a roll according to this application. It should be noted that, in the following text, the packaging film 1 will be referred to as... Figure 1 The extension direction LL, as indicated in the diagram, is defined as the length direction. The direction WW, which is perpendicular to the extension direction LL, is defined as the width direction. The direction TT, which is perpendicular to both the extension direction LL and the width direction WW, is defined as... Figure 3 (The middle) is defined as the thickness direction.

[0038] like Figure 1As shown, the packaging film 1 is in the form of an elongated strip that runs continuously along the length direction LL. It includes a base film 10 and an attachment film 11. The attachment film 11 extends substantially over the entire length (dimension along the length direction LL) of the base film 10 in the length direction LL, and the dimension (hereinafter “width”) of the attachment film 11 in the width direction WW is much smaller than the width of the base film 10. The attachment film 11 can be attached to the base film 10 in a variety of ways as detailed below, so that it can be provided as a whole with the base film 10.

[0039] Figure 2-4 Packaging film 1 according to several embodiments of this application is shown along... Figure 1 The cross-sectional view obtained by line AA shown in the figure.

[0040] exist Figure 2 In the first embodiment of the packaging film according to this application, both the base film 10 and the attachment film 11 are single-layer structures, and are attached together by means of, for example, adhesion. As an example, the base film 10 may be made of any one of CPP, EBA, RCPP and PE, and the attachment film may be made of any one of PET, nylon, OPP, CPP, EBA, RCPP and PE.

[0041] exist Figure 3 In the second embodiment of the packaging film according to this application, the base film 10 has a double-layer structure, comprising a first layer 101 and a second layer 102 attached together. Given that there are various options for the attachment of these two layers, which are well known to those skilled in the art, this application does not elaborate on or limit the attachment methods.

[0042] and Figure 2 The difference between the first embodiment shown and the one shown is that, in Figure 3 In the second embodiment shown, the attachment film 11 is embedded within the first layer 101. Although the attachment film 11 is... Figure 3 The attachment is shown as extending through the first layer 101 and attached to the second layer 102 (wherein the dimension (hereinafter "thickness") of the attachment film 11 along the thickness direction TT shown in the figure is approximately equal to the thickness of the first layer 101), but this application is not limited thereto. The embedding structure can have various design options. For example, the attachment film 11 can be embedded and attached to the first layer 101 (wherein the thickness of the attachment film 11 embedded in the first layer 101 is less than the thickness of the first layer 101), or the attachment film 11 can be embedded simultaneously in both the first layer 101 and the second layer 102, but not exposed on the side of the second layer 102 opposite to the first layer 101 (wherein the thickness of the attachment film 11 embedded in the second layer 102 is less than the thickness of the second layer 102).

[0043] Preferably, in the embedding structure, the exposed surface of the attachment film 11 is coplanar with the surface of the base film 10, so that the packaging film 1 is continuous or smooth over the entire surface area of ​​the exposed attachment film 11.

[0044] exist Figure 3 In the second embodiment shown, as an example, the first sheet 101 may be made of any one of CPP, EBA, RCPP and PE, while the second sheet 102 may be made of any one of OPP and PET.

[0045] The materials were chosen to ensure that the attached membrane 11 cannot be heat-sealed to the base membrane 11, but can form an adhesive bond with it. This adhesive bond will break off automatically upon exposure to a certain external impact (details below).

[0046] exist Figure 4 In the third embodiment of the packaging film according to this application shown, the base film 10 has a four-layer structure, while the attachment film 11 has a three-layer structure embedded within the first layer 101 of the base film 10. Intermediate layers 103 and 104 are provided between the first layer 101 and the second layer 102 of the base film 10. (See also...) Figure 3 The enlarged view shown in the circle is a partial view. These intermediate sheets 103 and 104 can be made of, for example, one of OPP and PET. The attachment sheet 11 includes, in addition to the first sheet 111 and the adjacent second sheet 112, a third sheet 113 attached to the side of the first sheet 111 opposite to the second sheet 112. The first sheet 111 can be made of PET, while the second sheet 112 can be made of MATT OPP. The third sheet 113 can be a coating, preferably an adhesive layer.

[0047] The third layer 113 may be made of a food-grade adhesive. For example, the adhesive may preferably be an adhesive known as a heat-pressed adhesive (SEIKADYNE). It may be a gravure polymer. As an example, the adhesive may contain 25-30% resin, 10-20% toluene, 5-10% alcohol, and 1-5% pigment. Alternatively, the adhesive may be applied to the exposed surface of the first layer 111 of the attachment film 11 by inkjet printing. The third layer 113 may be a complete layer applied to the entire surface or a dotted layer applied in a dotted pattern. The third layer is designed to prevent the attachment film 11 from being heat-sealed to the base film 10.

[0048] Although this application has described several embodiments of packaging films above, it is not limited thereto, and various applicable structures can be conceived by those skilled in the art. For example, combining a single-layer attachment film with a multi-layer base film, or combining a multi-layer attachment film with a single-layer base film, etc.

[0049] The following section will describe the relevant structure of packaging using the packaging film of this application.

[0050] Figure 5 A top perspective view of an exemplary structure of a package according to this application is shown. Figure 5 The package shown is in the form of a packaging bag 2. The packaging bag 2 can be formed, for example, by folding a pre-obtained packaging film 1 of the desired length along its length direction LL to form a fold 20, and then heat-sealing the opposing separating edges into lips 21, 22 and 23. Figure 5 The dashed line in the diagram schematically shows the location of the attached membrane 11.

[0051] Figure 6A It shows along Figure 5 The line 6-6 was obtained at lip margin 23. Figure 2 The diagram shows a cross-sectional view of the packaging bag 2 formed by the packaging film 1, which mainly illustrates the state of the attached film 11 at the lip 23 in the formed packaging bag 2. It can be envisioned that the structure at the lip 21 is similar to the state structure at the lip 23.

[0052] like Figure 6A As shown, at the lip 23 adjacent to the fold 20, the attaching film 11 is initially integrally formed with the underlying base film 10 (in the orientation shown in the figure), and after the heat-sealing process, it forms an adhesive bond with the upper base film 10 through material properties. Alternatively, the attaching film 11 can be adhesively bonded to the upper base film 10 via a third layer 113 (i.e., an adhesive layer) through a heat-sealing process, and is also attached to the base film 10 via a heat-sealing process. This heat-sealing process creates a closed containment space S (indicated in the figure) inside the packaging bag 2. Figure 7 (in the middle), so that the accommodating space S inside the final formed packaging bag 2 can be isolated from the external space of the packaging bag 2.

[0053] To heat the contents of the packaging bag 2, a heat source such as microwave or steam can be used to heat the packaging bag 2. During this process, as the pressure inside the packaging bag 2 increases, this internal pressure forces the attached films 11 at the lips 21 and 23 to adhere to the heat-sealed ( Figure 6AThe adhesive connection between the base membrane 10 (shown above it) is broken, thereby forming an vent 12 at at least one of the lips 21 and 23, see [reference]. Figure 6B The formation of this vent 12 can avoid or even eliminate the risk of the packaging bag 2 rupturing at random locations due to excessive internal pressure.

[0054] Figure 7 It shows Figure 5 The diagram shows a perspective view of the packaging bag in a state to be filled. Lips 21 and 23 are formed only on the two sides adjacent to the fold 20 by heat sealing, leaving an opening 24 on the side opposite to the fold 20, thereby forming a receiving space S of the packaging bag 2 for receiving the contents to be filled (not shown).

[0055] although Figure 6A , Figure 6B and Figure 7 The illustration shows that the packaging bag 2 is formed by folding the packaging film 1 in half, but this application is not limited thereto.

[0056] Figure 8 This is a top perspective view of a second exemplary structure of a package according to this application. The package is also in the form of a bag, but... Figure 5 The embodiment shown differs from that, Figure 8 The packaging bag 2 shown consists of packaging film 1 and other films 3 separate from packaging film 1 (marked in...). Figure 10 The middle layer is formed by heat sealing around the edges to create corresponding lip edges, rather than by folding and heat sealing the packaging film itself.

[0057] exist Figure 8 In the illustrated embodiment, the packaging bag 2 is provided with a divider 25. See also Figure 8-10 The partition 25 is configured to be in the position Figure 9 In the closed state shown, the accommodating space S of the packaging bag 2 can be divided into at least two subspaces (only the division into two subspaces S1 and S2 is shown in the figure), and in the... Figure 10 The open state shown allows these subspaces to be interconnected. Figure 8 In the illustrated embodiment, the attachment film 11 of the packaging bag 2 is disposed parallel to the lip 21 on one side of the partition 25. For example... Figure 9 and Figure 10 As shown, the partition 25 can be in the form of a closure, which includes a first closure 251 and a second closure 252 that cooperate with each other. As shown, the first closure 251 and the second closure 252 are respectively located at opposite positions on the inner sides of the film 3 and the packaging film 1 that constitute the packaging bag 2.

[0058] Before the packaging bag 2 is heated, the first closure 251 and the second closure 252 can cooperate to separate subspaces S1 and S2. If necessary, the user can separate them to allow the two subspaces to communicate with each other. As an example, the closure 25 can be a zipper lock, and the first closure 251 and the second closure 252 can be a convex lock head and a concave lock buckle, respectively. Of course, this application does not limit the form of the closure, and those skilled in the art can conceive of various applicable closure structures.

[0059] In practical applications, different contents can be placed in subspaces S1 and S2 respectively. Before heating, the first closure 251 and the second closure 252 are separated to mix the two contents before heating. Alternatively, the opening of closure 25 can be achieved spontaneously through spatial expansion during heating, thereby mixing the contents on both sides. Subsequently, during heating, as the pressure inside the space increases, vents can be formed at the lips (e.g., 21 and 23) to expel excess gas from the containment space S, thereby preventing uncontrolled rupture of the packaging bag.

[0060] Figure 11 This is a perspective view of a third exemplary structure of the packaging according to this application, which shows Figure 8 The packaging shown is a variation of its structure. Figure 11 The packaging bag 2 shown has a bottom structure B that allows it to stand upright. The bottom structure B shown is merely illustrative and not intended to limit the application; those skilled in the art will envision various structures that can achieve an upright position, which will not be elaborated upon here. A partition 25, in the form of, for example, a closure, is horizontally positioned relative to the vertical direction to divide the accommodating space S into an (upper) subspace S1 and a (lower) subspace S2. An attachment film 11 is positioned parallel to the partition 25 and close to the upper lip 22 formed by heat sealing.

[0061] For example, in practical applications, tea leaves and drinking water can be respectively placed into sub-spaces S1 and S2 of the packaging bag 2. As the packaging bag 2 is heated (e.g., by microwave), the drinking water at the bottom generates steam, causing the lower sub-space S2 to gradually expand. This forces the divider 25 to open from a closed state, allowing the tea leaves in the upper sub-space S1 to fall into the drinking water in the lower sub-space S2. With further heating, the containing space S expands further, forming an exhaust port 12 at at least one of the lips 21 and 23 to release excess gas from the containing space S.

[0062] Although tea and drinking water are used as examples here, this application is not limited to them, and other applicable substances that can be conceived by those skilled in the art are possible, such as coffee powder and drinking water.

[0063] In an alternative embodiment of this application, the divider 25 of the packaging bag 2 can also be formed by heat sealing, see [link to application]. Figure 12 This illustrates a fourth exemplary structure of the packaging according to the present application. In this structure, the attachment film 11 and the partition 25 are arranged perpendicularly to each other and intersect. The partition 25, like the surrounding lip, can be formed by heat sealing to divide the accommodating space S of the packaging bag 2 into sub-spaces S1 and S2, which can be used to accommodate different contents. Upon heating, as the sub-spaces S1 and S2 expand, a connecting opening 13 is formed at the intersection 11C of the partition 25 and the attachment film 11, allowing the sub-spaces S1 and S2 located on both sides of the partition 25 to communicate. This arrangement is more advantageous when one of the sub-spaces S1 and S2 contains a fluid content. For example, if the sub-space S1 contains a liquid (e.g., water) and the sub-space S2 contains a solid (e.g., tea leaves), the formation of the connecting opening 13 allows water in the sub-space S1 to flow through the connecting opening 13 into the sub-space S2 to form the desired tea. Furthermore, as heating proceeds, an vent 12 can be formed at at least one of the lips 21 and 23 to prevent uncontrollable rupture of the packaging bag 2.

[0064] Alternatively, vent 12 may be formed only on one side of the lip of the subspace S2 containing tea leaves. This arrangement may facilitate the formation of vent 21 at the lip of subspace S1 before the water in subspace S1 (after boiling) flows through the connecting port 13 into subspace S2, thereby affecting the flow of water.

[0065] Figure 13 A top plan view of a fifth exemplary structure of the packaging according to this application is shown, while Figure 14 It is along Figure 13 The diagram shows a cross-sectional view of the package obtained from line 14-14. Figure 13 The structure shown is Figure 12 The only difference in the structure shown is that the former's packaging is box-shaped, meaning that the packaging film 1 is attached to the packaging via a process such as heat sealing. Figure 15 The open box body 40 is shown. Although the box body 40 is shown as having two compartments, the application is not limited thereto. Similar to the case of packaging bags, the packaging boxes of this application may have one, two, or more compartments.

[0066] exist Figure 14 and 15 In the packaging box 4 shown, the packaging film 1 can be heat-sealed to each edge of the box body 40 to form an accommodating space between them. The attached film 11 is placed facing the box body 40, so that when the packaging box 4 is heated, for example by microwave, communication between the two partitioned spaces can be achieved.

[0067] Furthermore, as those skilled in the art can conceive, by changing the relative positions of the attached film 11 on the packaging film 1 and the partition ribs 41 of the box body 40, selective communication and spatial isolation between different partition spaces can be achieved. The box body 40 can be made of various materials, such as plastic, composite cardboard, etc.

[0068] It should be noted that although ordinal numbers (e.g., first, second, etc.) are used in the description in this article, the expression is only used to distinguish related structures or components and is not intended to order them.

[0069] Furthermore, although several embodiments of this application have been described with reference to the accompanying drawings, as will be understood by those skilled in the art, various modifications can be made to the above embodiments without departing from the scope defined by the appended claims. The above embodiments are provided merely as examples to illustrate the technical solutions of this application and are not intended to limit the scope of protection of this application. A feature or element described in one embodiment may be incorporated into another embodiment unless it contradicts an existing feature or element in another embodiment. Moreover, the specific wording of features and the possible use of reference numerals in the appended claims are not intended to limit the scope of protection claimed.

Claims

1. A packaging film, characterized in that, The packaging film includes: Basic membrane; and An attachment membrane is disposed on the base membrane and extends along the entire length of the base membrane, the width of the attachment membrane being smaller than the width of the base membrane, the attachment membrane comprising: An adhesion surface, the adhesion surface being configured for adhesion to the base film to form an adhesion portion; and The surface opposite to the adhesion surface, The packaging film is configured to be heat-sealed to itself or to a mating component independent of the packaging film to form a closed space for containing contents, such that a functional portion is formed between the working surface and the base film or the mating component connected by heat sealing. The functional portion is configured to form an exhaust port when the contents within the space are heated, allowing gas within the space to escape from the exhaust port.

2. The packaging film according to claim 1, characterized in that, The working surface cannot be heat-sealed to the base diaphragm or the mating component, but rather forms an adhesive connection with the base diaphragm or the mating component, the adhesive connection being configured to break upon heating to form the exhaust port.

3. The packaging film according to claim 2, characterized in that, A coating is provided on the working surface, and the coating is configured to form an adhesive bond with the base film or the mating component during heat sealing.

4. The packaging film according to any one of claims 1-3, characterized in that, The base film includes a first layer and a second layer attached to each other, wherein the attachment film is embedded within the first layer and attached to either the first or the second layer.

5. The packaging film according to claim 4, characterized in that, The second layer is a single-layer structure or a multi-layer structure; and / or The attached film can be a single-layer or multi-layer structure.

6. The packaging film according to claim 4, characterized in that, The packaging film is configured to be used in conjunction with an automatic roll wrapping machine, and / or The packaging film is suitable for microwave heating or steam heating.

7. The packaging film according to claim 6, characterized in that, The attachment portion is a structure formed by thermally fusing the base film and the attachment film at corresponding positions.

8. The packaging film according to claim 7, characterized in that, The attachment portion includes an adhesive layer disposed between the attachment surfaces of the base film and the attachment film.

9. A type of packaging, characterized in that, The packaging includes: The packaging film as described in any one of claims 1-8; and A mating component is configured to be heat-sealed to the packaging film to form a lip, thereby forming the closed space between them. The functional portion is formed between the working surface of the attachment film of the packaging film and the mating component, and the vent is formed on the lip.

10. The packaging according to claim 9, characterized in that, The package further includes a partition located between the packaging film and the mating component, the partition being configured to divide the enclosed space into at least two spatially isolated subspaces before heating the contents within the package, but allowing the at least two subspaces to be fluidly connected when the contents are heated.

11. The packaging according to claim 10, characterized in that, The partition is a structure formed by heat-sealing the packaging film and the mating component. The attachment film of the packaging film extends through the partition to form a second functional portion between the working surface of the attachment film and the mating component. The second functional portion is configured to be closed before heating the contents within the space to achieve spatial isolation, and to open when heating the contents within the space to achieve fluid communication.

12. The packaging according to claim 10, characterized in that, The partition is in the form of a closure, the closure comprising: A first closure element is disposed on the base film of the packaging film at a position where the attached film is not present; and A second closure is disposed on the mating member and configured to engage with the first closure to achieve spatial isolation before heating the contents within the space, and to open to achieve fluid communication when the contents within the space are heated.

13. The packaging according to claim 12, characterized in that, The attachment film is positioned parallel to the partition and close to the lip edge of the package.

14. The packaging according to any one of claims 9-13, characterized in that, The packaging is in the form of a bag, and the fitting component is part of the base film of the packaging film or other components independent of the packaging film.

15. The packaging according to any one of claims 9-13, characterized in that, The packaging is in the form of a box, and the mating parts are in the form of an open box.

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