KR102256741B1 - Sealing film, manufacturing apparatus thereof, manufacturing method thereof and sealed container - Google Patents

Abstract

While maintaining the sealing characteristics of the container, the gas inside the container can be discharged smoothly to prevent deterioration of the food, and the food contained in the container can be kept fresh as long as possible, so the food is stored in the container without the sterilization process of the food. The present invention relates to a sealing film that can be accommodated in, and accordingly, more high-quality food products can be distributed.

Description

TECHNICAL FIELD The sealing film, the manufacturing apparatus of the sealing film, the manufacturing method of the sealing film, and the sealing container TECHNICAL FIELD OF THE INVENTION

It relates to a sealing film, a manufacturing apparatus of a sealing film, a manufacturing method of a sealing film, and a sealing container.

Because food is spoiled after a certain period of time due to its characteristics, a container for preserving it for a long time needs to maintain a sealing property that blocks contact between the stored food and external air and/or moisture.

However, the sealing method of simply completely blocking the food from the outside may not be appropriate depending on the type of food to be accommodated.

For example, if the food contained in the container is fermented food, gas is generated over time, and the gas is not discharged to the outside of the sealed container. There may be a problem in which food is easily spoiled.

As described above, as a sealing method of an existing sealed structure, in particular, there is a limitation in storage and/or distribution of fermented foods, and thus, there is a growing demand for a sealed packaging method for foods capable of maintaining the freshness of the fermented foods received.

An embodiment of the present invention is to solve the above problems and/or limitations, in particular, of a sealing film and a sealing film capable of maintaining the sealing properties of fermented foods and keeping the receptacle fresh through the discharge of gas. One object is to provide a manufacturing apparatus, a manufacturing method of a sealing film, and a sealing container.

In order to achieve the above object, an embodiment includes an aluminum material, a 1-1 surface including a bonding member, and a 1-2 surface opposite to the 1-1 surface, and the first penetration A first film having a ball, and a second film bonded to at least one of the first and second surfaces, and the second film is disposed to overlap the first through hole, and the It is possible to provide a sealing film further comprising a fourth film provided so that at least a portion of the first film is bonded to each other.

According to an embodiment, the first film is disposed to be opposed to, and includes a 3-1 surface including a bonding member and a 3-2 surface opposite to the 3-1 surface, and includes a second through hole. A third film may be further included, and the second film may be interposed between the first film and the third film, and the second film may be disposed to overlap the first through hole and the second through hole.

Another embodiment includes a container body having a flange around an opening, and the sealing film of claim 1 or 2 bonded to the flange, and wherein the 1-1 side is bonded to the flange. , A container body having a flange around an opening of the sealing container, and the sealing film of the above-described embodiments bonded to the flange, and the first-first surface is provided to be bonded to the flange, and a sealing container can be provided. have.

In another embodiment, a first surface including an aluminum material, including a 1-1 surface including a bonding member and a surface 1-2 opposite to the surface 1-1, and having a first through hole Preparing a film, and disposing a second film on at least one of the first and second surfaces, wherein the second film is disposed to overlap the first through hole, , It may provide a method of manufacturing a sealing film, further comprising the step of attaching at least a portion of the fourth film to the first film.

According to another embodiment, the attaching at least a portion of the fourth film to the first film includes disposing a fourth film on the first film so as to overlap the first through hole, and the first 1 Arranging a film on a support block, moving a pressing block opposite to the support block toward the fourth film, and being positioned between the pressing block and the fourth film to prevent movement of the pressing block. First pressing at least the fourth film in the direction of the first film by a dependent cushion block, causing at least an overlapping portion of the first film and the fourth film to be heated, and the pressing block and the cushion block Driving at least a second pressurization of the fourth film in the direction of the first film, wherein a portion of the fourth film that does not overlap with the first through hole may be bonded to the first film.

In another embodiment, a support block on which a sealing film including a first film including an aluminum material and having a first through hole, and a fourth film disposed to overlap with the first through hole of the first film is supported, and , A pressing block facing the support block and provided to reciprocate toward the support block, and at least located between the pressing block and the sealing film, and selectively pressing force on the sealing film according to the movement of the pressing block A cushion block provided to be adjusted, a coil unit installed on at least one of the support block and the pressing block and provided to generate an electromagnetic wave, and electrically connected to the coil unit and the pressing block, and the coil unit and the pressing block It is possible to provide an apparatus for manufacturing a sealing film including; a control unit provided to control the operation of the.

According to another exemplary embodiment, a magnetic induction member disposed to face the coil unit with the sealing film therebetween may be further included.

According to the embodiments of the present invention as described above, while maintaining the sealing property of the container, the gas inside the container is smoothly discharged to prevent deterioration of the food.

Since the freshness of the food contained in the container can be kept as long as possible, the food can be accommodated in the container without a sterilization process of the food, and accordingly, distribution of higher quality food can be possible.

Since the sealing container according to an embodiment can be cooked in a microwave as it is, a wider selection of food items that can be accommodated and distributed can be expanded, and since it can be cooked simply, it can be more useful for food accommodation.

When the first film is formed as a peelable type and the third film is formed as a weld type, it is possible to prevent the second film from falling by increasing the bonding strength of the second film to the first film, and the sealing film of the present invention is used as a container. By making it possible to peel off from, use can be made more convenient.

Since the process can be carried out fully automatically, the process yield and productivity can be greatly improved.

By forming the seaming part with the lid and bonding the sealing film thereto, it is possible to further increase the protection of the container inside the container by the hard lid.

1 is a plan view of a sealing film according to an embodiment.
FIG. 2 is a cross-sectional view taken along line II of FIG. 1.
3 is an enlarged cross-sectional view of a part of FIG. 2 in an enlarged manner.
4 is an enlarged cross-sectional view of part II of FIG. 3 according to an exemplary embodiment.
5 is an enlarged cross-sectional view of another embodiment of part II of FIG. 3.
6 is an enlarged cross-sectional view of another embodiment of part II of FIG. 3.
7 is an enlarged cross-sectional view of another embodiment of part II of FIG. 3.
8 is an enlarged cross-sectional view of another embodiment of part II of FIG. 3.
9 is an enlarged cross-sectional view of another embodiment of part II of FIG. 3.
10 is a plan view showing an arrangement of a first through hole and a second through hole according to another exemplary embodiment.
11 is a plan view showing an arrangement of a first through hole and a second through hole according to another exemplary embodiment.
12 is a cross-sectional view illustrating an embodiment of a sealing container to which a sealing film is bonded.
13 is a cross-sectional view illustrating another embodiment of a sealing container to which a sealing film is bonded.
14 is a partial cross-sectional view of a sealing film according to another exemplary embodiment.
15 is an enlarged cross-sectional view of part III of FIG. 14 according to an exemplary embodiment.
16 is an enlarged cross-sectional view of a portion III of FIG. 14 according to another exemplary embodiment.
17 is an enlarged cross-sectional view of another embodiment of part III of FIG. 14.
18 is an enlarged cross-sectional view of another embodiment of part III of FIG. 14.
19A to 19C are views showing a part of a method of manufacturing a sealing film according to an exemplary embodiment.
20A to 20D are diagrams illustrating a part of an apparatus for manufacturing a sealing film and a method for manufacturing a sealing film according to an exemplary embodiment.
21 is a plan view of a sealing film according to another embodiment.
22 is a partial cross-sectional view taken along IV-IV of FIG. 21.
23 is an enlarged cross-sectional view of a portion V of FIG. 22 according to an exemplary embodiment.
24 is an enlarged cross-sectional view of a portion V of FIG. 22 according to an exemplary embodiment.
25 shows a sealing container according to another embodiment.
26 is an enlarged cross-sectional view illustrating an embodiment of the seaming unit of FIG. 25.

Since the present invention can apply various transformations and have various embodiments, specific embodiments are illustrated in the drawings and will be described in detail in the detailed description. Effects and features of the present invention, and a method of achieving them will become apparent with reference to the embodiments described below in detail together with the drawings. However, the present invention is not limited to the embodiments disclosed below and may be implemented in various forms.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings, and when describing with reference to the drawings, the same or corresponding constituent elements are assigned the same reference numerals, and redundant descriptions thereof will be omitted. .

In the following examples, expressions in the singular include plural expressions unless the context clearly indicates otherwise.

In the following embodiments, terms such as include or have means that the features or elements described in the specification are present, and do not preclude the possibility of adding one or more other features or components in advance.

In the following embodiments, when a part such as a film, a region, or a component is on or on another part, not only the case directly above the other part, but also another film, region, component, etc. are interposed therebetween. Includes cases where there is.

When a certain embodiment can be implemented differently, a specific process order may be performed differently from the described order. For example, two processes described in succession may be performed substantially simultaneously, or may be performed in an order opposite to the described order.

In the drawings, components may be exaggerated or reduced in size for convenience of description. For example, the size and thickness of each component shown in the drawings are arbitrarily shown for convenience of description, and thus the following embodiments are not necessarily limited to those shown.

1 is a plan view of a sealing film 1 according to an exemplary embodiment, and FIG. 2 is a cross-sectional view taken along line II of FIG. 1.

1 and 2, an embodiment of the sealing film 1 may include a first film 11, a second film 12, and a third film 13.

The first film 11 and the third film 13 may be bonded to each other. According to an embodiment, the first film 11 may be provided in a larger area than the third film 13. . However, the present invention is not limited thereto, and the third film 13 may have the same area as the first film 11.

The first film 11 and the third film 13 each include a first through hole 113 and a second through hole 133.

The first through hole 113 may be provided to pass through the first film 11, and the second through hole 133 may be provided to pass through the third film 13.

According to an embodiment, the first through hole 113 and/or the second through hole 133 may be located at the center of the first film 11 and/or the third film 13, respectively. , It is not necessarily limited thereto, and may be positioned at the edges of the first film 11 and/or the third film 13, respectively.

The second film 12 may be positioned between the first film 11 and the third film 13, and according to an embodiment, the second film 12 includes the first through hole ( 113) and the second through hole 133 may be disposed to overlap, respectively.

The second film 12 may be fixed between the first film 11 and the third film 13 by bonding of the first film 11 and the third film 13.

In the above structure, the second film 12 may be provided wider than at least one of the first through hole 113 and the second through hole 133. According to an embodiment, the second film 12 (12) is provided wider than the first through hole 113 and the second through hole 133, and covers all of them so that the first through hole 113 and the second through hole 133 do not communicate directly with each other. I can. Liquid leakage may not occur through the first through hole 113 and the second through hole 133.

FIG. 3 is an enlarged cross-sectional view of a part of FIG. 2, and FIG. 4 is a cross-sectional view of an enlarged portion II of FIG. 3.

As can be seen in FIG. 3, the third film 13 may include a 3-1 surface 13-1 and a 3-2 surface 13-2 opposed to each other.

The 3-1 surface 13-1 of the third film 13 may be disposed to face the first film 11.

The third film 13 may be smaller than the first film 11 and larger than the second film 12. Accordingly, the first portion 134 of the third film 13 is bonded to the first film 11, and the second portion 135 other than the first portion 134 of the third film 13 is It is bonded to the second film 12.

At least one of the first film 11 and the third film 13 as described above may include an aluminum member. According to an embodiment, both the first film 11 and the third film 13 may include an aluminum member, but are not limited thereto, and only the first film 11 includes an aluminum member. It can be provided with.

According to an embodiment, the first film 11 may include a first base film 110 and a first bonding film 111 as shown in FIG. 4.

The first base film 110 may be a thin film including aluminum and/or an aluminum alloy.

The first bonding film 111 is bonded to one side of the first base film 110, and the outer side of the first bonding film 111 forms the 1-1 side (11-1). The outer surface of the first base film 110 may form the 1-2 surface 11-2.

The first bonding film 111 may be a single layer or a plurality of layers made of a plastic material, and is made of a material having a bonding function by bonding means such as heat, pressure, and/or electromagnetic waves (including high frequencies). It may include a film. The first film 11 may be bonded to the container body by a film made of a material having such a bonding function.

According to an embodiment, the first bonding film 111 may include polyethylene, polyester, and/or polyethylene terephthalate.

According to an embodiment, the first bonding film 111 may include a film for bonding the film having the bonding function to the first base film 110. It can be a single layer or a multilayer film.

According to an embodiment, the first bonding film 111 may further include a film made of a paper material. The film provided with the paper material may be interposed between the film having the bonding function and the first base film 110.

The first bonding film 111 as described above may be fixedly bonded to a container to be described later, but is not limited thereto, and a user may physically release the bonding.

According to an embodiment, the third film 13 may include a third base film 130 and a third bonding film 131 as shown in FIG. 4.

The third base film 130 may be a thin film including aluminum and/or an aluminum alloy. However, it is not necessarily limited thereto, and the third base film 130 may be a film made of a plastic material and/or a paper material.

The third bonding film 131 is bonded to one side of the third base film 130, and the outer side of the third bonding film 131 forms the 3-1 side 13-1. In addition, the outer surface of the third base film 130 may form the 3-2 surface 13-2.

The third bonding film 131 may be a single layer or a plurality of layers made of a plastic material, and is made of a material having a bonding function by bonding means such as heat, pressure, and/or electromagnetic waves (including high frequencies). It may include a film. The third film 13 may be bonded to the first film 11 by a film made of a material having such a bonding function.

According to an embodiment, the third bonding film 131 may include polyethylene, polyester, and/or polyethylene terephthalate.

According to an embodiment, the third bonding film 131 may include a film for bonding the film having the bonding function to the third base film 130. It can be a single layer or a multilayer film.

According to an embodiment, the third bonding film 131 may further include white paper. The white paper may be interposed between the film having the bonding function and the third base film 130.

The second film 12 may be positioned between the first film 11 and the third film 13.

The second film 12 may be formed of a porous polymer material. The porous polymer material may have a pore size of 0.2 to 1.5 μm, and may be a membrane in which a plurality of pores are regularly and/or irregularly dispersed, and a single layer structure and/or a multi layer structure of a single and/or plurality of materials. Can be

According to an embodiment, the second film 12 may have hydrophobicity and/or oil resistance. According to an embodiment, the second film 12 may include an acrylic copolya material, a polyether sulfone material, and/or a nylon nonwoven fabric support.

According to the second film 12, as will be described later, the fermentation gas inside the container passes through the pores of the second film 12, but the liquid may not. In addition, it is possible to prevent gas and/or liquid from penetrating into the container through the second film 12 from the outside of the container.

Optionally, the second film 12 as described above may be bonded to the first film 11 and/or the third film 13, such as bonding means such as heat, pressure, high frequency, radio wave and/or electromagnetic Can be joined by

In an embodiment of this structure, as shown in FIG. 12, the stack of the second film 12 and the third film 13 may be exposed to the outside of the container 2.

5 is a cross-sectional view of another embodiment in which a portion II of FIG. 3 is enlarged.

In the embodiment shown in FIG. 5, unlike the embodiment shown in FIG. 4, the second film 12 is disposed on the first bonding film 111, and the third bonding film is disposed on the second film 12. It can be a structure in which 131 is placed.

Accordingly, the 1-1 surface 11-1 may be a surface of the first film 11 facing the second film 12. An embodiment of this structure may be a structure in which a stack of the second film 12 and the third film 13 faces the inside of the container 2, as can be seen in FIG. 11.

FIG. 6 is a cross-sectional view of another embodiment in which a portion II of FIG. 3 is enlarged.

In the embodiment shown in Figure 6, the first film 11 is a first cover film 112 in addition to the first base film 110 and the first bonding film 111 shown in the embodiment shown in Figure 4 It may further include. Since the first base film 110 and the first bonding film 111 may be the same as those of the embodiment shown in FIG. 4, detailed descriptions will be omitted.

The first cover film 112 is bonded to the other surface of the first base film 110, and the outer surface of the first cover film 112 covers the first-second surface (11-2). Can be formed.

The first cover film 112 may be a single layer or a plurality of layers formed of a plastic material, such as heat, pressure, and/or electromagnetic waves (including high frequencies), or external pressure by the aforementioned bonding means, The first base film 110 and/or the first bonding film 111 may be protected from scratches and the like.

According to an embodiment, the first cover film 112 may include polyolefin, polyester, polyethylene terephthalate, and/or polypropylene.

According to an embodiment, the first cover film 112 may include a single layer or a plurality of layers of a cushion film made of polyolefin and/or polypropylene.

According to an embodiment, the first cover film 112 may include a single layer or a plurality of layers of films made of polyester and/or polypropylene.

According to an embodiment, the first cover film 112 may include a film made of polyethylene terephthalate.

According to an embodiment, the first cover film 112 may include a film made of a paper material.

According to an embodiment, the first cover film 112 may include wax or a release material.

In the embodiment shown in Figure 6, the third film 13 is a third cover film 132 in addition to the third base film 130 and the third bonding film 131 shown in the embodiment shown in Figure 4 It may further include. Since the third base film 130 and the third bonding film 131 may be the same as the embodiment shown in FIG. 4, detailed descriptions will be omitted.

The third cover film 132 is bonded to the other surface of the third base film 130, and an outer surface of the third cover film 132 covers the 3-2 surface (13-2). Can be formed.

The third cover film 112 may be a single layer or a plurality of layers of films made of a plastic material, such as heat, pressure, and/or electromagnetic waves (including high frequencies) by the aforementioned bonding means, or external pressure, The third base film 130 and/or the third bonding film 131 may be protected from scratches and the like.

According to an embodiment, the third cover film 132 may include polyolefin, polyester, polyethylene terephthalate, and/or polypropylene.

According to an embodiment, the third cover film 132 may include a single layer or multiple layers of cushion film made of polyolefin and/or polypropylene.

According to an embodiment, the third cover film 132 may include a single layer or a plurality of layers of films made of polyester and/or polypropylene.

According to an embodiment, the third cover film 132 may include a film made of polyethylene terephthalate.

According to an embodiment, the third cover film 132 may include a film made of a paper material.

According to an embodiment, the third cover film 132 may include wax or a release material.

In an embodiment of this structure, as shown in FIG. 12, the stack of the second film 12 and the third film 13 may be exposed to the outside of the container 2.

7 is a cross-sectional view of another embodiment in which a portion II of FIG. 3 is enlarged.

In the embodiment shown in FIG. 7, unlike the embodiment shown in FIG. 6, the second film 12 is disposed on the first bonding film 111, and the third bonding film is disposed on the second film 12. It can be a structure in which 131 is placed.

Accordingly, the 1-1 surface 11-1 may be a surface of the first film 11 facing the second film 12.

An embodiment of this structure may be a structure in which a stack of the second film 12 and the third film 13 faces the inside of the container 2, as can be seen in FIG. 11.

Although not shown in the drawings, another embodiment of the present invention may be configured by applying the first film 11 and the third film 13 of the embodiments shown in FIGS. 4 to 7 in combination. For example, the structure of the third film 13 of FIGS. 6 and/or 7 may be applied to the structure of the first film 11 of FIGS. 4 and/or 5. Optionally, the structure of the third film 13 of FIGS. 4 and/or 5 may be applied to the structure of the first film 11 of FIGS. 6 and/or 7.

FIG. 8 is a cross-sectional view of another embodiment in which a portion II of FIG. 3 is enlarged.

The embodiment shown in FIG. 8 shows that the structure of the second film 12 is changed in the embodiment shown in the embodiment shown in FIG. 7.

In the embodiment shown in FIG. 8, the second film 12 may include a second base film 120.

The second base film 120 may be formed of a porous polymer material. The porous polymer material may have a pore size of 0.2 to 1.5 μm, and may be a membrane in which a plurality of pores are regularly and/or irregularly dispersed, and a single layer structure and/or a multi layer structure of a single and/or plurality of materials. Can be

According to an embodiment, the second base film 120 may have hydrophobicity and/or oil resistance.

According to an embodiment, the second base film 120 may include an acrylic copolyre material, a polyether sulfone material, and/or a nylon nonwoven fabric support.

According to the second base film 120, the fermentation gas inside the container passes through the pores of the second base film 120, but the liquid may not pass through, as will be described later. In addition, it is possible to prevent gas and/or liquid from penetrating into the container through the second base film 120 from the outside of the container.

The second film 12 may include at least one bonding layer 121, 122, and the second base film 120 may include the first film 11 and / Or it may be bonded to the third film (13).

According to an embodiment, the first bonding layer 121 may be interposed between the second base film 120 and the 1-1 surface 11-1 of the first film 11.

According to an embodiment, a second bonding layer 122 may be interposed between the second base film 120 and the 3-1 surface 13-1 of the third film 13.

In this embodiment, the second base film 120 may be more stably fixed to the first film 11 and/or the third film 13.

It goes without saying that the structure of the second film 12 as described above can be equally applied to all the embodiments of FIGS. 4 to 6.

9 is a cross-sectional view of another embodiment in which a portion II of FIG. 3 is enlarged.

According to the embodiment shown in FIG. 9, unlike the embodiment shown in FIG. 4, the first film 11 may be composed of only the first base film 110. In this case, although not shown in the drawing, when bonding the sealing film 11 to the flange 22 of the container 2 as shown in FIGS. 12 and 13 to be described later, By forming the adhesive film only in the area in contact with the flange 22, the first base film 110 may be bonded to the flange 22 by bonding means such as heat, pressure, and/or electromagnetic waves (including high frequencies).

The above structure can be applied equally to all the embodiments of FIGS. 5 to 8.

In the sealing film 1 as described above, as can be seen in FIG. 3, the first through hole 113 has a first diameter D1, and the second through hole 133 has a second diameter D2 It may be provided to have.

According to an embodiment, the first diameter D1 may be the same as the second diameter D2.

However, it is not necessarily limited thereto, and as shown in FIG. 10, the first diameter D1 and the second diameter D2 may be different from each other. According to the embodiment shown in FIG. 10, the diameter of the first through hole 113 may be larger than the diameter of the second through hole 133, but is not limited thereto, and the first through hole 113 The diameter of may be smaller than the diameter of the second through hole 133.

In addition, the first through hole 113 and the second through hole 133 may be located concentrically with each other. However, it is not necessarily limited thereto, and as shown in FIG. 11, the first through-hole 113 and the second through-hole 133 are not concentric with each other and may be partially overlapped. Even in a structure in which the first through hole 113 and the second through hole 133 partially overlap each other, the second film 12 overlaps the first through hole 113 and the second through hole 133. It can be arranged to overlap with the part. Accordingly, it is possible to prevent the first through hole 113 and the second through hole 133 from directly communicating without passing through the second film 12.

Although not shown in the drawings, according to another embodiment, the first through hole 113 and the second through hole 133 may be formed in a structure that does not overlap each other. Even in this case, the first through hole 113 and the second through hole 133 must be individually overlapped with the second film 12. Therefore, the width D3 of the second film 12 may be larger than the first diameter D1 and the second diameter D2.

As described above, in various embodiments, both the first through hole 113 and the second through hole 133 overlap with the second film 12 to allow airflow to pass through the second film 12.

12 is a cross-sectional view showing an embodiment of the sealing container 2 to which the sealing film 1 as described above is bonded. As shown in Fig. 12, the sealing container 2 may include a container body 21 having a flange 22 around an opening.

The above-described sealing film 1 may be bonded to the flange 22. As shown in FIG. 12, the sealing film 1 may be bonded to the flange 22 so that the third film 13 faces the inside 23 of the container 2. That is, the second film 12 and the third film 13 are located on the 1-1 surface 11-1 of the first film 11, and the 1-1 surface 11-1 is It can be joined to the flange 22.

In the above structure, the sealing container 2 may be sealed with a sealing film 1 therein 23. Accordingly, food contained in the interior 23 can be protected from the outside.

In addition, due to the first through hole 113 and the second through hole 133 formed in the first film 11 and the third film 13, respectively, and the second film 13 overlapping them , The gas in the interior 23 of the sealing container 2 can be discharged to the outside of the container, so that the fermentable food can be stored and/or distributed in the interior 23 of the container 2. Therefore, it is possible to keep the food contained in the container (2) inside (23) more fresh.

In addition, through the second film 12, the fermentation gas in the inside 23 of the container 2 is discharged to the outside, and at the same time, the liquid in the inside 23 can be prevented from being discharged to the outside. It is possible to prevent gas from penetrating into the interior 23 of the container 2.

In the structure of the present invention, since the second film 12 can be more firmly fixed to the first film 11 by the third film 13, the second film 12 may be peeled off during the distribution process. Due to this, it is possible to prevent the container interior 23 from being leaked or deteriorated.

The size and installation position of the first through hole 113 and the second through hole 133 as described above may be variously designed according to the type of food accommodated in the interior 23 and its storage/distribution route/period. . That is, when the amount of the fermented gas discharged is large, the size of the first through hole 113 and/or the second through hole 133 is increased, and the size of the first through hole 113 and/or the second through hole 133 is increased, and these are arranged concentrically to induce smooth discharge of the gas. I can. In the case of a structure in which the amount of exhaust gas is small and can be gradually discharged over a long period of time, the gas The outflow path of the can be designed more complex.

13 is a cross-sectional view showing another embodiment of the sealing container 2 to which the sealing film 1 is bonded.

As shown in FIG. 13, the sealing film 1 may be bonded to the flange 22 so that the third film 13 faces the outside of the container 2. That is, the second film 12 and the third film 13 are positioned on the first-second surface (11-2) of the first film 11, and the first-first surface (11-1) is It can be joined to the flange 22.

In the above structure, since the third film 13 is exposed to the outside, a structure in which a trademark or design is printed on the third film 13 can be implemented.

14 is a cross-sectional view showing a sealing film 1 according to another embodiment. The embodiment shown in FIG. 14 may include a first film 11 and a second film 12.

The first film 11 includes a first through hole 113. The first through hole 113 may be located at the center of the first film 11, but is not limited thereto, and may be located at the edge of the first film 11.

The second film 12 may be disposed to overlap the first through hole 113.

The second film 12 may be provided wider than the first through hole 113. According to an embodiment, the second film 12 covers the first through hole 113 No leakage may occur through the through hole 113.

15 is a cross-sectional view of an embodiment in which part B of FIG. 14 is enlarged.

According to an embodiment, the first film 11 may include a first base film 110 and a first bonding film 111 as shown in FIG. 15. Since the first base film 110 and the first bonding film 111 may be the same as those of the above-described embodiments, detailed descriptions are omitted.

In the embodiment of FIG. 15, the outer surface of the first bonding film 111 is the 1-1 surface 11-1, and the outer surface of the first base film 110 is the 1-2 surface 11-2. Can be.

The second film 12 may be positioned on the 1-2 surface 11-2.

The second film 12 may include a second base film 120 and a first adhesive layer 121. Since the second base film 120 may be the same as the above-described embodiment, a detailed description will be omitted.

The first adhesive layer 121 may be interposed between the second base film 120 and the 1-2 surface 11-2, and the second base film 120 by the first adhesive layer 121 It may be bonded to the first film 11.

An embodiment of this structure may be a structure in which the second film 12 is exposed to the outside of the container 2.

16 is a cross-sectional view of another embodiment in which a portion III of FIG. 14 is enlarged.

In the embodiment shown in FIG. 16, unlike the embodiment shown in FIG. 15, the second film 12 may be positioned on the 1-1 surface 11-1.

An embodiment of this structure may be a structure in which the second film 12 is directed toward the inside of the container 2.

17 is a cross-sectional view of another embodiment in which a portion III of FIG. 14 is enlarged.

According to an embodiment, the first film 11 may include a first base film 110, a first bonding film 111, and a first cover film 112, as shown in FIG. 17. Since the first base film 110, the first bonding film 111, and the first cover film 112 may be the same as those of the above-described embodiments, detailed descriptions will be omitted.

In the embodiment of FIG. 17, the outer surface of the first bonding film 111 is the 1-1 surface 11-1, and the outer surface of the first cover film 112 is the 1-2 surface 11-2. Can be.

The second film 12 may be positioned on the 1-2 surface 11-2.

The second film 12 may include a second base film 120 and a first adhesive layer 121. The first adhesive layer 121 may be interposed between the second base film 120 and the 1-2 surface 11-2, and the second base film 120 by the first adhesive layer 121 It may be bonded to the first film 11. An embodiment of this structure may be a structure in which the second film 12 is exposed to the outside of the container 2.

18 is a cross-sectional view of another embodiment in which a portion III of FIG. 14 is enlarged.

In the embodiment shown in FIG. 18, unlike the embodiment shown in FIG. 17, the second film 12 may be positioned on the 1-1 surface 11-1.

An embodiment of this structure may be a structure in which the second film 12 is directed toward the inside of the container 2.

Next, the manufacturing method and manufacturing apparatus of the sealing film 1 as described above will be described in more detail.

First, as shown in FIG. 19A, a first film 11 is prepared.

The first film 11 may include a first-first surface (11-1) and a first-second surface (11-2) facing each other.

According to an embodiment, the first film 11 may include a first base film 110 and a first bonding film 111 as shown in FIGS. 4 and 5.

According to another embodiment, the first film 11 includes a first base film 110, a first bonding film 111, and a first cover film 112 as shown in FIGS. 6 and 7. Can include.

According to another embodiment, the first film 11 may include a first base film 110 as shown in FIG. 9.

Details of the first base film 110, the first bonding film 111, and/or the first cover film 112 are as described above.

The first film 11 may be provided in a roll type, and the first through hole 113 may be perforated at an appropriate position. Accordingly, an automated process can be implemented. However, the present invention is not necessarily limited thereto, and the first film 11 may be cut and provided as a single sheet.

Next, as shown in FIG. 19B, a second film 12 having a predetermined size may be disposed on the 1-1 surface 11-1 of the first film 11.

According to an embodiment, all of the second films 12 of the embodiments of FIGS. 4 to 9 and 15 to 18 may be applied to the second film 12.

As shown in FIG. 19B, the second film 12 may be disposed to overlap the first through hole 113.

In FIG. 19B, the second film 12 is shown to be located on the 1-1 side (11-1), but the present invention is not limited thereto, and the second film 12 may be located on the 1-2 side (11-2). have.

The second film 12 may be cut into a single sheet and disposed on the first film 11, and a separate support means such as an adsorber, jig, probe, and pin is used to attach the second film 12 to the first film. (11) can be fixedly supported.

In the case of the second film 12 of the embodiments of FIGS. 15 to 18, the sealing film may be formed only by this process.

Next, as shown in FIG. 19C, a third film 13 is prepared.

The third film 13 may include a 3-1 surface 13-1 and a 3-2 surface 13-2 opposed to each other.

According to an embodiment, the third film 13 may include a third base film 130 and a third bonding film 131 as shown in FIGS. 4 and 5.

According to another embodiment, the third film 13 includes a third base film 130, a third bonding film 131, and a third cover film 132 as shown in FIGS. 6 and 7. Can include.

Details of the third base film 130, the third bonding film 131, and/or the third cover film 132 are as described above.

The third film 13 may be cut into a single sheet and disposed on the second film 12. Separate support means such as an adsorber, jig, probe, and pin may be used to attach the third film 13 to the second film. (12) can be fixedly supported.

As shown in FIG. 19C, the third film 13 may be formed to be larger than the third film 13 and smaller than the first film 11.

In addition, the second through hole 133 is disposed so as to overlap the second film 12.

The 3-1 surface 13-1 of the third film 13 as described above faces the second film 12.

As shown in FIG. 19C by the above method, the film laminate 10 of the first to third films 11 to 13 may be obtained.

Using the film laminate 10 obtained as described above, an embodiment of the sealing film 1 may be manufactured through the sealing film manufacturing apparatus as shown in FIGS. 20A to 20D.

First, an embodiment of an apparatus for manufacturing the sealing film will be described.

An embodiment of the sealing film manufacturing apparatus may include a support block 31, a pressing block 32, a cushion block 323, a coil unit 313, and a control unit 33.

The support block 31 may include a first block structure 311 and may have a support surface 314 on the first block structure 311.

The above-described film laminate 10 is mounted on the support surface 314. At this time, the support surface 314 may be seated so that the 1-2nd surface 11-2 of the film stack 10 is placed.

A first induction rod 312 for inducing magnetism may be disposed inside the support block 31, and the coil unit 313 described above is wound around the first induction rod 312. The first guide rod 312 may be formed of a ferrite material.

The coil unit 313 may be electrically connected to the control unit 33 to generate electromagnetic waves (including a nasal wave) according to the control of the control unit 33.

The pressing block 32 may be disposed to face the support block 31 and may be provided to reciprocate toward the support block 31.

The pressing block 32 may include a second block structure 321 and a driving unit 324, and the support block 31 may be pressed by the second block structure 321.

The second block structure 321 is connected to the driving unit 324 and performs reciprocating motion in the vertical direction according to the operation of the driving unit 324. The driving unit 324 is electrically connected to the control unit 33 and thus moves the second block structure 321 under the control of the control unit 33.

Optionally, according to an embodiment, a second induction rod 322 for inducing magnetism may be further provided inside the second block structure 321. The second induction rod 322 may be disposed coaxially with the first induction rod 312, and may be provided to have a length in the movement direction of the second block structure 321.

Electromagnetic wave bonding, which will be described later, may be more effectively performed by the second guide rod 322.

On the other hand, the cushion block 323 may be located at least between the pressing block 32 and the film stack 10, selectively in the film stack 10 according to the motion of the pressing block 32 It may be provided to adjust the pressing force.

According to an embodiment, the cushion block 323 may be coupled to a surface of the pressing block 32 facing the support block 31. Accordingly, as the pressing block 32 moves, the cushion block 323 may be provided to directly press the film stack 10. Since the film laminate 10 is pressed by the cushion block 323, even if a step occurs due to a difference in area of each layer of the film laminate 10, it can be smoothly bonded. Although not shown in the drawings, the cushion block 323 may also be provided on the support surface 314 of the support block 31.

As can be seen in FIG. 20A, the film laminate 10 is disposed on the support surface 314 of the support block 31. In this case, the first film 11 of the film stack 10 is disposed on the support surface 314.

Next, as shown in FIG. 20B, the driving unit 324 is operated to move the pressing block 32 in the direction of the film stack 10, and a cushion block that moves depending on the movement of the pressing block 32 The film layered product 10 is first pressed by 323.

According to the first pressing by the cushion block 323, the cushion block 323 presses at least the third film 13 in the direction of the first film 11.

Next, as shown in FIG. 20C, the driving unit 324 is operated to move the pressing block 32 in the direction of the film stack 10, and a cushion block that moves depending on the movement of the pressing block 32 By 323, the film layered product 10 is pressed for a second time. At the same time, the control unit 33 operates the coil unit 313 to apply electromagnetic waves (including high frequencies) to at least the overlapping portions of the first film and the third film, thereby heating and bonding the overlapping portions of the first film and the third film. Let it.

Bonding of the first film 11 and the third film 13, bonding of the first film 11 and the second film 12, and/or the second film 12 according to the second pressurization and/or application of electromagnetic waves. ) And the third film 13 are bonded together.

As a result of the second pressing by the cushion block 323 in this way, the third film 13 and the third film 13 three-dimensionally protruding onto the first film 11 as can be seen in FIGS. 2 and 3 It is possible to pressurize the stacked structure of the whole, and it is possible to make the distribution of force evenly.

In the above embodiment, the overlapping portion of the first film 11 and the third film 13 is heated and bonded according to the application of an electromagnetic wave, but the present invention is not necessarily limited thereto, and is manufactured by other means such as heaters and ultrasonic waves. The overlapped part of the 1st film and the 3rd film can be heat-bonded.

Thereafter, as shown in FIG. 20D, the drive unit 324 is operated to move the pressure block 32 and the cushion block 323 upward, and the film stack 10 placed on the support surface 314 is removed. After recovery, the first film 11 may be cut to manufacture the sealing film 1.

21 is a plan view of a sealing film according to another embodiment, and FIG. 22 is a partial cross-sectional view taken along IV-IV of FIG. 21.

21 and 22, in addition to the sealing film shown in FIG. 4, in addition to the sealing film shown in FIG. 4, a fourth film ( 14) can be joined.

At least a portion of the fourth film 14 may be bonded to the first film 11. As can be seen in FIGS. 21 and 22, the edge first region 14-1 of the fourth film 14 It is bonded to the first film 11, and the second region 14-2 of the central portion may not be bonded to the first film 11. Accordingly, the second region 14-2 may form a path in one direction of the gas. As shown in FIG. 21, the second area 14-2 may be opened so that at least one side communicates with the outside, but unlike the drawing, only one side may be opened.

The second area 14-2 may be at least larger than the first diameter D1 and the second diameter D2. Accordingly, the airflow passing through the first through hole 113 and the second through hole 133 may be discharged to the outside through the second region 14-2.

That is, as shown in FIG. 12, when the sealing film 1 as described above is bonded to the container 2, when gas is generated in the interior 23 of the container 2 and the internal gas pressure increases, the first penetration The gas that has passed through the hole 113, the second film 13 and the second through hole 133 can be discharged to the outside through the second region 14-2, so that the inside 23 of the container 2 ) To preserve and/or distribute fermentable foods. In addition, when the pressure of the inside 23 of the container 2 decreases, the fourth film 14 is in close contact with the first through hole 113 to further block external gas from entering the container. In order to make the fourth film 14 flexible, according to an exemplary embodiment, the fourth film 14 may be formed to have a thickness of 10 to 25 μm. Unlike FIG. 21, the fourth film 14 may be formed to have a circular plane.

According to an embodiment, as shown in FIG. 23, a fourth base film 140 and a fourth bonding film 141 may be included.

The fourth base film 140 may be a thin film including aluminum and/or an aluminum alloy. The fourth bonding film 141 may be a single layer or a plurality of layers of a plastic material, and is made of a material having a bonding function by bonding means such as heat, pressure, and/or electromagnetic waves (including high frequencies). It may include a film. The fourth film 14 may be bonded to the first film 11 by a film made of a material having such a bonding function. According to an embodiment, the fourth bonding film 141 may include polyethylene, polyester, and/or polyethylene terephthalate.

According to an embodiment, the fourth bonding film 141 may include a film for bonding the film having the bonding function to the fourth base film 140. It can be a single layer or a multilayer film. As described above, the fourth bonding film 141 may be formed only in the first region 14-1 and may not be formed in the second region 14-2. However, it is not necessarily limited thereto, and the fourth bonding film 141 is formed over the entire surface of the fourth base film 140, and only the first region 14-1 may be bonded in the bonding process described later. have.

According to an embodiment, the fourth bonding film 141 may further include a film made of a paper material. The film made of the paper material may be interposed between the film having the bonding function and the fourth base film 140.

According to another embodiment shown in FIG. 24, the fourth film 14 is a fourth cover in addition to the fourth base film 140 and the fourth bonding film 141 shown in the embodiment shown in FIG. 23. A film 142 may be further included. The fourth cover film 142 is bonded to the other surface of the fourth base film 140 and may be formed over the entire surface of the fourth base film 140.

The fourth cover film 142 may be a single layer or a plurality of layers of films made of a plastic material, such as heat, pressure, and/or electromagnetic waves (including high frequencies), or external pressure by the aforementioned bonding means, The fourth base film 140 and/or the fourth bonding film 141 may be protected from scratches and the like.

According to an embodiment, the fourth cover film 142 may include polyolefin, polyester, polyethylene terephthalate, and/or polypropylene.

According to an embodiment, the fourth cover film 142 may include a single layer or multiple layers of cushion film made of polyolefin and/or polypropylene.

According to an embodiment, the fourth cover film 142 may include a single layer or a plurality of layers of films made of polyester and/or polypropylene.

According to an embodiment, the fourth cover film 142 may include a film made of polyethylene terephthalate.

According to an embodiment, the fourth cover film 142 may include a film made of a paper material.

According to an embodiment, the fourth cover film 142 may include wax or a release material.

The fourth film 14 as described above may be manufactured to be bonded to the first film 11 by the manufacturing method described in FIGS. 19A to 20C, and at this time, it may be manufactured using the same manufacturing apparatus. have. That is, the fourth film 14 may be attached to the first film 11 in the same manner as the method of bonding the third film 13 to the first film 11 described above.

First, a fourth film 14 is disposed on one surface of the first film 11 so as to overlap the first through hole 113. In this case, the first film 11 may be in a state in which the second film 12 and the third film 13 are bonded to the bottom surface as described in the above-described embodiment. However, it is not necessarily limited thereto, and the second film 12 and the third film 13 may be unbonded, and optionally, the second film 12 is a separate tape other than the third film 13. And/or may be fixed by means of bonding.

In this way, the first film 11 in which the fourth film 14 is overlapped is disposed on the support block 31. Then, the pressing block 32 facing the support block 31 is moved toward the fourth film 14.

Thereafter, at least the fourth film 14 is first pressed in the direction of the first film 11 by the cushion block 323 dependent on the motion of the pressing block 32.

Next, the driving unit 324 is operated to move the pressing block 32 in the direction of the fourth film 14, and the fourth cushion block 323 moves depending on the movement of the pressing block 32. The film 14 is pressed for a second time. At the same time, the control unit 33 operates the coil unit 313 to apply electromagnetic waves (including high frequencies) to at least the overlapping portions of the first and fourth films, thereby heating and bonding the overlapping portions of the first and fourth films. Let it. In this case, as described above, the fourth bonding film 141 is formed only in the first area 14-1 to form a structure in which only the first area 14-1 is bonded. Alternatively, only the first region 14-1 may be bonded by performing the heat bonding process by the coil unit 313 only in a partial area of the fourth bonding film 141.

Bonding of the first film 11 and the fourth film 14 is completed according to the second pressurization and/or application of the electromagnetic wave, and the fourth film 14 does not overlap the first through hole 113. The first region 14-1 is bonded to the first film 11.

25 shows a sealing container according to another embodiment. Referring to FIG. 25, a seaming lid 15 is coupled to a container 2 including a container body 21 provided with a flange 22 around the opening.

According to an embodiment, the container 2 may be provided with a plastic material, and may be provided transparently so that the inside 23 can be checked. The plastic material forming the container 2 may be a plastic material usable in a microwave oven, and polypropylene, high-density polyethylene, crystallized polyethylene terephthalate, or heat-resistant polystyrene may be used. The container 2 may be made of a plastic material that is easily bonded to the seaming lid 15, which is a metal material. According to an embodiment, transparent polypropylene may be used as the plastic material forming the container 2.

This vessel 2 may have a first flange 22 along the edge of the inlet as can be seen in FIG. 26.

The lid 15 may be provided with a thin metal material. As the metal material forming the lid 15, an aluminum material may be used, and a high purity aluminum material may be used. In the case of such a high-purity aluminum material, it can be used in a microwave oven. The lid 15 may be rigid enough not to be damaged during storage and/or distribution.

As can be seen in FIG. 25, the lid 15 may have a shape in which the central portion is opened, and the above-described sealing film 1 may be bonded to the lid 15 to close the central opening of the lid 15.

The lid 15 is coupled to the container 2 and includes a second body 151 that can be inserted into the inlet of the container, and the first flange 22 along the edge of the second body 151 A second flange 152 positioned to correspond to and positioned between the second main body 151 and the second flange 152 and extending perpendicular to the ground to be inserted into the main body 21 through the inlet. And a third flange 153 positioned at an outer end of the second flange 152 and a connecting flange 154.

As for the sealing film 1 bonded to the lid 15, the sealing film 1 of all embodiments described herein may be applied. According to an embodiment, the sealing film 1 may have a handle 11-3 formed on one edge, as shown in FIG. 25, and the handle 11-3 is not bonded to the lid 15. The sealing film 1 bonded to the lid 15 can be peeled off from the lid 15 by being exposed to the outside without the user holding and pulling the handle 11-3.

On the other hand, between the container 2 and the lid 15, a seaming part 3 provided to couple the lid 15 to the container 2 is positioned. The seaming part 3 may be provided to have an arcuate surface. The seaming portion 13 is located at the entrance edge of the container 2 and the edge of the lid 15, and may be provided as a combination of the container 2 and the lid 15.

More specifically, the seaming part 3 is located along the edge of the inlet of the container 2, as can be seen in FIG. 26, and a first end in close contact with the side wall of the main body 21 of the container 2 ( 31), a second end 32 opposite to the first end 31, and a connecting portion 33 having an arc-shaped surface located between the first end 31 and the second end 32. Can include.

In the seaming part 3 of this structure, since the first end 31 is in close contact with the side wall of the main body 21 of the container 2, the sealing of the container can be more stably maintained. In addition, since the third flange 153 is kept inserted between the bent first flange 22 and the body 21, the degree of sealing inside the container may be further improved.

In the case of the container 2 made of a plastic material with low ductility, the first flange 22 is formed to be sufficiently long to be bent downward smoothly and then the end thereof is bent upward again, and the first flange 22 ) And a part of the third flange 153 and/or the second flange 152 formed of a metal material having high ductility between the body 21 and the body 21 are pushed in to form the shape of the seaming portion 3 described above. You can do it. That is, the second flange 152 is bent downward from the connection flange 154, and the third flange 153 is bent upward from the second flange 152 to face the second flange 152. In addition, the end of the first flange 22 is bent upward, so that the ends of the first flange 22 and the bent first flange 22 are between the second flange 152 and the third flange 153. Can be positioned. Therefore, the seaming part 3 has a structure in which the third flange 153, the end of the first flange, the first flange 22 and the second flange 153 are sequentially formed in close contact from the outside of the body 21 of the container 2 Has.

According to an embodiment, the first length d1 between the upper surface of the second body 151 of the lid 15 and the second end 32 that is the upper end of the seaming part 3 is the first length d1 of the seaming part 3. It may be longer than the second length d2 from the first end 31 to the second end 32. This is because the second flange 152 is pushed upward to some extent in the pressing process by the roller forming the seaming part 3, and accordingly, the seaming part 3 becomes a more compact size when viewed from the outside. In addition, since the seaming portion 3 is not formed so thick, the package appearance of the sealed container can be further improved.

The present invention has been described with reference to an embodiment shown in the accompanying drawings, but this is only illustrative, and those of ordinary skill in the art will understand that various modifications and other equivalent embodiments are possible therefrom. I will be able to. Therefore, the true scope of protection of the present invention should be determined only by the appended claims.

1: sealing film
2: sealing container
11: first film
12: second film
13: third film
14: fourth film
113: first through hole
133: second through hole
31: support block
32: pressure block
33: control unit

Claims (7)

A container body made of plastic and having a flange around the opening;
A lid provided with a metal material, the edge sealingly coupled to the flange of the container body to form a seaming portion, and having an opening in the center;
It is formed to be wider than the opening of the lid and provided to cover the opening, and includes an aluminum material, and includes a 1-1 surface including a bonding member and a 1-2 surface opposite to the 1-1 surface, , A first film having a first through hole;
A second film bonded to the first-first surface; And
Including; a fourth film provided to have flexibility and provided so that at least a portion is bonded to the first-second surface,
The second film is disposed to overlap the first through hole,
The fourth film,
A pair of first regions positioned on both edges of the fourth film and bonded to the first-second surface of the first film; And
And a second region located between the first region of the central portion of the fourth film and not bonded to the first film,
The width of the second region is greater than the width of the second film,
The sealing container, wherein the bonding member of the edge of the first-first surface is bonded to the outer edge of the opening of the lid. The method of claim 1,
A third film disposed opposite to the first film, including a 3-1 surface including a bonding member and a 3-2 surface facing the 3-1 surface, and having a second through hole Including,
The second film is interposed between the first film and the third film,
The second film is disposed to overlap the first through hole and the second through hole, sealing container. The method according to claim 1 or 2,
The sealing container provided so that the said 4th film has a bonding film in the said 1st area, and does not have a bonding film in the said 2nd area.
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