KR102548812B1 - Sealing film, manufacturing apparatus thereof, manufacturing method thereof and sealed container - Google Patents

Abstract

It is possible to prevent deterioration of food by maintaining the airtight characteristics of the container and smoothly discharging gas inside the container, and to keep the food stored inside the container as long as possible. It relates to a sealing film that can be accommodated in, and thus enables the distribution of higher quality food.

Description

Sealing film, sealing film manufacturing apparatus, sealing film manufacturing method, and sealing container {Sealing film, manufacturing apparatus thereof, manufacturing method thereof and sealed container}

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

Because food deteriorates after a certain period of time due to its nature, a container for preserving it for a long time needs to maintain an airtight characteristic that blocks contact between the contained food and outside air and/or moisture.

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

For example, when the food contained in the container is fermented food, the food generates gas over time, and this gas is not discharged to the outside of the sealed container, so the container eventually bursts and causes problems, or A problem in which food easily spoils may occur.

As such, the sealing method of the existing airtight structure has limitations in storage and / or distribution, especially for fermented food, so there is an increasing demand for an airtight packaging method for food that can maintain the freshness of the fermented food received.

Embodiments of the present invention are intended to solve the above problems and / or limitations, in particular, a sealing film and a sealing film capable of maintaining the sealing properties of fermented foods and keeping the contents fresh through the release of gas. One object is to provide a manufacturing apparatus, a method for manufacturing a sealing film, and a sealing container.

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

According to one embodiment, it is disposed to face the first film and includes a 3-1 surface including a bonding member and a 3-2 surface opposite to the 3-1 surface, and a second through hole It may further include a third film having, wherein the second film is 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 the opening, and the sealing film according to claim 1 or 2 bonded to the flange, wherein the 1-1 side is provided to be bonded to the flange. It is possible to provide a sealing container, including a container body having a flange around the opening of the sealing container, and the sealing film of the above-described embodiments bonded to the flange, wherein the 1-1 surface is provided to be bonded to the flange. there is.

Another embodiment includes a first surface comprising an aluminum material, including a bonding member, and a first surface including a 1-2 surface opposite to the first surface, and having a first through hole. preparing a film, and disposing a second film on at least one of the 1-1 and 1-2 surfaces, wherein the second film is disposed to overlap the first through hole; , Attaching at least a portion of the fourth film to the first film may further include a method for manufacturing a sealing film.

According to another embodiment, the attaching of at least a portion of the fourth film to the first film may include disposing a fourth film on the first film to overlap the first through hole, and 1 placing a film on a support block, moving a press block opposite to the support block toward the fourth film, located between the press block and the fourth film, and controlling the movement of the press block a step of first pressing at least the fourth film in the direction of the first film by a dependent cushion block, heating at least an overlapping portion of the first film and the fourth film, the pressing block and the cushion block and pressing at least the fourth film in a direction of the first film by driving a second, and 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 supporting a sealing film including a first film including an aluminum material and having a first through hole, and a fourth film disposed to overlap the first through hole of the first film, and , a pressure block opposed to the support block and provided to reciprocate toward the support block, and a pressure block positioned between at least the pressure block and the sealing film, and selectively pressing force on the sealing film according to the motion of the pressure block. A cushion block provided to adjust the cushion block, a coil unit installed on at least one of the support block and the pressure block and provided to generate electromagnetic waves, and electrically connected to the coil unit and the pressure block, the coil unit and the pressure block It is possible to provide an apparatus for manufacturing a sealing film comprising a; control unit provided to control the operation of.

According to another 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, it is possible to prevent deterioration of food by maintaining the airtight characteristics of the container and at the same time smoothly discharging gas therein.

Since the freshness of the food accommodated inside the container can be maintained for as long as possible, the food can be accommodated in the container without a sterilization process, and accordingly, higher quality food can be distributed.

Since the sealing container according to an embodiment can be cooked in a microwave oven as it is, the selection range of food that can be accommodated and distributed can be broadened, and since it can be cooked simply, it can be more useful for accommodating food.

When the first film is a peelable type and the third film is a weld type, it is possible to fundamentally prevent the second film from falling off by increasing the adhesion of the second film to the first film, and the sealing film of the present invention can be applied to the container. By making it peelable from, it can be used more conveniently.

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

By forming a seaming portion with a lid and attaching a sealing film thereto, the protection of the contents inside the container by the hard lid can be further enhanced.

1 is a plan view of a sealing film according to an exemplary embodiment.
Figure 2 is a sectional view along line II in Figure 1;
FIG. 3 is an enlarged cross-sectional view of a portion of FIG. 2 .
4 is an enlarged cross-sectional view of an embodiment of part II of FIG. 3 .
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 illustrating the arrangement of first through holes and second through holes according to another embodiment.
11 is a plan view illustrating the arrangement of first through holes and second through holes according to another embodiment.
12 is a cross-sectional view showing an embodiment of a sealing container to which a sealing film is bonded.
13 is a cross-sectional view showing 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 embodiment.
15 is an enlarged cross-sectional view of an embodiment of part III of FIG. 14 .
16 is an enlarged cross-sectional view of another embodiment of part III of FIG. 14 .
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 illustrating a part of a method of manufacturing a sealing film according to an exemplary embodiment.
20A to 20D are diagrams illustrating parts 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 along IV-IV of FIG. 21 .
23 is an enlarged cross-sectional view of an embodiment of part V of FIG. 22 .
24 is an enlarged cross-sectional view of an embodiment of part V of FIG. 22 .
25 shows a sealing container according to another embodiment.
26 is an enlarged cross-sectional view showing an embodiment of the seaming part of FIG. 25;

Since the present invention can apply various transformations and have various embodiments, specific embodiments will be illustrated in the drawings and described in detail in the detailed description. Effects and features of the present invention, and methods for achieving them will become clear with reference to the embodiments described later 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 components are assigned the same reference numerals, and overlapping descriptions thereof will be omitted. .

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

In the following embodiments, terms such as include or have mean that features or components described in the specification exist, and do not preclude the possibility that one or more other features or components may be added.

In the following embodiments, when a part such as a film, region, component, etc. is said to be on or on another part, not only when it is directly above the other part, but also when another film, region, component, etc. is interposed therebetween. Including if there is

When an embodiment is otherwise implementable, a specific process sequence may be performed differently from the described sequence. For example, two processes described in succession may be performed substantially simultaneously, or may be performed in an order reverse to the order described.

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

FIG. 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 .

As shown in FIGS. 1 and 2 , 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 have a larger area than the third film 13 . However, it is not necessarily 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 pass through the first film 11 , and the second through hole 133 may pass through the third film 13 .

According to one embodiment, the first through hole 113 and / or the second through hole 133 may be located in the central portion of the first film 11 and / or the third film 13, respectively. , It is not necessarily limited thereto, and may be located at the edge 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, according to one embodiment, the second film 12 is the first through hole ( 113) and the second through hole 133 may be disposed to overlap each other.

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

In the structure as described above, 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 one embodiment, the second film 12 (12) is wider than the first through hole 113 and the second through hole 133, and covers both of them so that the first through hole 113 and the second through hole 133 do not communicate directly with each other. can 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 part of FIG. 2, and FIG. 4 is a cross-sectional view of one embodiment in which part II of FIG. 3 is enlarged.

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

The 3-1 side 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 excluding 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 one embodiment, both the first film 11 and the third film 13 may include an aluminum member, but are not necessarily limited thereto, and only the first film 11 includes an aluminum member. can be provided with

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

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 surface of the first base film 110, and the outer surface of the first bonding film 111 forms the 1-1 surface 11-1. The outer surface of the first base film 110 may form the first-second surface 11-2.

The first bonding film 111 may be a single-layer or multi-layered film 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 frequency). may contain films. The first film 11 can be bonded to the container body by a film made of a material having such a bonding function.

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

According to one 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 may be a single layer or multilayer film.

According to an embodiment, the first bonding film 111 may further include a film made of paper. The film made of the paper material may be interposed between the bonding film 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 necessarily limited thereto, and may be physically released by a user.

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

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 plastic material and/or paper material.

The third bonding film 131 is bonded to one surface of the third base film 130, and the outer surface of the third bonding film 131 forms the 3-1 surface 13-1. and 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 multi-layered film 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 frequency). may contain films. The third film 13 can be bonded to the first film 11 by a film made of a material having such a bonding function.

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

According to one 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 may be a single layer or multilayer film.

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

A 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 distributed, a single layer structure and/or a multi-layer structure of single and/or multiple materials. can be

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

Depending on the second film 12, as will be described later, the fermented gas inside the container passes through the pores of the second film 12, but the liquid may not pass through. In addition, it is possible to prevent gas and/or liquid from permeating into the inside of 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 by bonding means such as heat, pressure, radio frequency, radio waves, and/or electromagnetic. can be joined by

As can be seen in FIG. 12 , an example of such a structure may be a structure in which a laminate of the second film 12 and the third film 13 is exposed to the outside of the container 2 .

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

Unlike the embodiment shown in FIG. 4 , in the embodiment shown in FIG. 5 , the second film 12 is disposed on the first bonding film 111 and the third bonding film is disposed on the second film 12 . (131) may be arranged.

Therefore, the 1-1 surface 11-1 may be a surface of the first film 11 facing the second film 12 . As can be seen in FIG. 11 , an example of such a structure may be a structure in which a laminate of the second film 12 and the third film 13 faces the inside of the container 2 .

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

In the embodiment shown in FIG. 6 , the first film 11 includes 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 FIG. 4 . 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 thereof are 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 form

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

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

According to one embodiment, the first cover film 112 may include a single-layer or multi-layer cushion film made of polyolefin and/or polypropylene.

According to one embodiment, the first cover film 112 may include a single-layer or multi-layer film made of polyester and/or polypropylene.

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

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

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

In the embodiment shown in FIG. 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 FIG. 4 . may further include. Since the third base film 130 and the third bonding film 131 may be the same as those of the embodiment shown in FIG. 4 , detailed descriptions thereof are omitted.

The third cover film 132 is bonded to the other surface of the third base film 130, and the outer surface of the third cover film 132 covers the 3-2 surface 13-2. can form

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

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

According to one embodiment, the third cover film 132 may include a single-layer or multi-layer cushion film made of polyolefin and/or polypropylene.

According to one embodiment, the third cover film 132 may include a single-layer or multi-layer film made of polyester and/or polypropylene.

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

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

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

As can be seen in FIG. 12 , an example of such a structure may be a structure in which a laminate of the second film 12 and the third film 13 is exposed to the outside of the container 2 .

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

Unlike the embodiment shown in FIG. 6 , in the embodiment shown in FIG. 7 , the second film 12 is disposed on the first bonding film 111 and the third bonding film is disposed on the second film 12 . (131) may be arranged.

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

As can be seen in FIG. 11 , an example of such a structure may be a structure in which a laminate of the second film 12 and the third film 13 faces the inside of the container 2 .

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 FIG. 6 and/or FIG. 7 .

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

The embodiment shown in FIG. 8 shows that the structure of the second film 12 is changed from 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 distributed, a single layer structure and/or a multi-layer structure of single and/or multiple materials. can be

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

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

Depending on the second base film 120, as will be described later, the fermented gas inside the container passes through the pores of the second base film 120, but the liquid may not pass through. In addition, gas and/or liquid from the outside of the container may be prevented from permeating into the container through the second base film 120 .

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

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

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

Of course, 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 part 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 drawings, as shown in FIGS. 12 and 13 described later, when the sealing film 11 is bonded to the flange 22 of the container 2, the edge area of the first base film 110 By forming an adhesive film only in the area in contact with the flange 22, the first base film 110 can be bonded to the flange 22 by bonding means such as heat, pressure, and/or electromagnetic waves (including high frequency).

The above structure may be equally applied to all 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 equal to 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 necessarily 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 positioned concentrically with each other. However, it is not necessarily limited thereto, and as can be seen in FIG. 11 , the first through hole 113 and the second through hole 133 may not be concentric with each other and may be partially overlapped. In this way, 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 is formed so that the first through hole 113 and the second through hole 133 overlap. It can be arranged to overlap with the part. Accordingly, it is possible to prevent direct communication between the first through hole 113 and the second through hole 133 without passing through the second film 12 .

Although not shown in the drawing, 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 overlap the second film 12 individually. Therefore, the width D3 of the second film 12 may be greater than the first diameter D1 and the second diameter D2.

As described above, in various embodiments, the first through hole 113 and the second through hole 133 overlap the second film 12 so that the air flow can 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 the 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 positioned on the 1-1 surface 11-1 of the first film 11, and the 1-1 surface 11-1 is It can be bonded to the flange 22 .

In the above structure, the inside 23 of the sealing container 2 may be sealed by the sealing film 1 . Accordingly, food accommodated 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 respectively formed in the first film 11 and the third film 13 and the second film 13 overlapping them, , the gas in the inside 23 of the sealing container 2 can be discharged to the outside of the container, so that the fermented food can be preserved and/or distributed in the inside 23 of the container 2. Therefore, the food accommodated in the inside 23 of the container 2 can be kept fresher.

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 block gas from penetrating into the inside 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 peeling of the second film 12 in the distribution process Due to this, it is possible to prevent the contents inside the container 23 from leaking or deteriorating.

The size and installation position of the first through hole 113 and the second through hole 133 as described above may be designed in various ways depending on the type of food accommodated in the inside 23 and the preservation/distribution route/period thereof. . 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 arranged concentrically to induce smooth discharge of the gas. can In the case of a structure in which the amount of exhaust gas is small and can be slowly discharged over a long period of time, by making the sizes of the first through hole 113 and/or the second through hole 133 different or different overlapping positions, the gas The outflow path of can be designed more complexly.

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 1-2 surface 11-2 of the first film 11, and the 1-1 surface 11-1 is It can be bonded to the flange 22 .

Since the structure as described above exposes the third film 13 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 necessarily 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 one embodiment, the second film 12 covers the first through hole 113, so that the first Leakage may not 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 one embodiment, as shown in FIG. 15 , the first film 11 may include a first base film 110 and a first bonding film 111 . Since the first base film 110 and the first bonding film 111 may be the same as those of the foregoing embodiments, a detailed description thereof will be omitted.

15, the outer surface of the first bonding film 111 becomes the 1-1 surface 11-1, and the outer surface of the first base film 110 becomes the 1-2 surface 11-2. It can be.

The second film 12 may be positioned on the first-second 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 in the foregoing embodiment, a detailed description thereof will be omitted.

The first adhesive layer 121 may be interposed between the second base film 120 and the first-second surface 11-2, and the second base film 120 is formed 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 part III of FIG. 14 is enlarged.

Unlike the embodiment shown in FIG. 15, in the embodiment shown in FIG. 16, 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 part III of FIG. 14 is enlarged.

According to one embodiment, as shown in FIG. 17 , the first film 11 may include a first base film 110 , a first bonding film 111 and a first cover film 112 . 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, a detailed description thereof will be omitted.

17, the outer surface of the first bonding film 111 becomes the 1-1 surface 11-1, and the outer surface of the first cover film 112 becomes the 1-2 surface 11-2. It can be.

The second film 12 may be positioned on the first-second 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 first-second surface 11-2, and the second base film 120 is formed 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 part III of FIG. 14 is enlarged.

Unlike the embodiment shown in FIG. 17, in the embodiment shown in FIG. 18, 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 1-1 side 11-1 and a 1-2 side 11-2 facing each other.

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

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

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

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

This 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 may be implemented. However, it is not necessarily limited thereto, and the first film 11 may be cut and provided in a sheet form.

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

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 as being located on the 1-1 side 11-1, but the present invention is not necessarily limited thereto and may be located on the 1-2 side 11-2. there is.

The second film 12 may be cut into sheets and placed on the first film 11, and a separate support means such as an adsorber, a jig, a probe, or a pin is used to hold the second film 12 to the first film 11. (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 through this process.

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

The third film 13 may include a 3-1 side 13-1 and a 3-2 side 13-2 facing each other.

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

According to another embodiment, as shown in FIGS. 6 and 7 , the third film 13 includes a third base film 130, a third bonding film 131, and a third cover film 132. 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 sheets and placed on the second film 12, and a separate support means such as an absorber, a jig, a probe, or a pin is used to hold the third film 13 to the second film 12. (12) can be fixedly supported.

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

Also, the second through hole 133 is disposed to overlap the second film 12 .

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

As can be seen in FIG. 19c by the above method, the film laminate 10 of the first film 11 to the third film 13 can be obtained.

Using the film laminate 10 obtained as described above, an embodiment of the sealing film 1 may be manufactured through the manufacturing apparatus for the sealing film 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 apparatus for manufacturing the sealing film may include a support block 31 , a press 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 include a support surface 314 on top of the first block structure 311 .

The above-described film laminate 10 is seated on the support surface 314 . At this time, the first-second surface 11-2 of the film laminate 10 may be placed on the support surface 314 .

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

The coil unit 313 is electrically connected to the control unit 33 and may generate electromagnetic waves (including co-frequency waves) under the control of the control unit 33 .

The pressure block 32 may be disposed to face the support block 31 and 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 drive unit 324 and reciprocates in the vertical direction according to the operation of the drive unit 324 . The driving unit 324 is electrically connected to the control unit 33 and moves the second block structure 321 under the control of the control unit 33 .

Optionally, according to one 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 have a length in the movement direction of the second block structure 321 .

Due to the second induction rod 322, electromagnetic wave bonding, which will be described later, can be performed more effectively.

On the other hand, the cushion block 323 may be located at least between the press block 32 and the film stack 10, and according to the movement of the press block 32 selectively to the film stack 10 It may be provided so that the pressing force on it can be adjusted.

According to one embodiment, the cushion block 323 may be coupled to a surface of the pressure 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 laminate 10 . Since the film laminate 10 is pressed by the cushion block 323, it can be bonded smoothly even if a step occurs due to a difference in the area of each layer of the film laminate 10. 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 stack 10 is placed on the support surface 314 of the support block 31 . At this time, the first film 11 of the film stack 10 is disposed on the support surface 314 .

Next, as can be seen in FIG. 20B, the driving unit 324 is operated to move the pressure block 32 in the direction of the film laminate 10, and the cushion block moves depending on the motion of the pressure block 32. In (323), the film laminate 10 is first pressed.

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 can be seen in FIG. 20C, the driving unit 324 is operated to move the pressure block 32 in the direction of the film laminate 10, and the cushion block moves depending on the motion of the pressure block 32. In (323), the film laminate 10 is pressed for the 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 portion of the first film and the third film, thereby heating and bonding the overlapping portion of the first film and the third film. let it

The bonding of the first film 11 and the third film 13, the bonding of the first film 11 and the second film 12, and/or the bonding of the second film 12 according to the application of the second pressure and/or the electromagnetic wave. ) and the bonding of the third film 13 is completed.

As the second pressure is applied by the cushion block 323 in this way, as can be seen in FIGS. 2 and 3, the third film 13 and the third film 13 three-dimensionally protruding onto the first film 11 It is possible to press the laminated structure of the whole, and it is possible to ensure that the force is evenly distributed.

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

Then, as can be seen in FIG. 20D, the driving unit 324 is operated to move the pressure block 32 and the cushion block 323 upward, and the film laminate 10 placed on the support surface 314 is removed. After recovery, the sealing film 1 can be manufactured by cutting the first film 11 .

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

Referring to FIGS. 21 and 22 , a sealing film according to another embodiment includes, 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, and 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 one-way path of gas. As shown in FIG. 21, the second region 14-2 may have at least one side open to communicate with the outside, but unlike the drawing, only one side may be open.

The second area 14-2 may be larger than at least 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 coupled to the container 2, when gas is generated in the inside 23 of the container 2 and the internal gas pressure increases, the first penetration The gas passing through the ball 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 fermented foods. In addition, when the pressure of the inside 23 of the container 2 decreases, the fourth film 14 adheres to 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 embodiment, the fourth film 14 may be formed to a thickness of 10 to 25 μm. Unlike FIG. 21 , the fourth film 14 may be formed to have a circular plane.

According to one 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 multi-layer film 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 frequency). may contain films. The fourth film 14 can be bonded to the first film 11 by a film made of a material having such a bonding function. According to one embodiment, the fourth bonding film 141 may include polyethylene, polyester, and/or polyethylene terephthalate.

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

According to an embodiment, the fourth bonding film 141 may further include a film made of paper. The film made of the paper material may be interposed between the bonding film 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 multi-layer film made of a plastic material, such as heat, pressure, and/or electromagnetic waves (including high frequencies), or external pressure, The fourth base film 140 and/or the fourth bonding film 141 may be protected from scratches or the like.

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

According to one embodiment, the fourth cover film 142 may include a single-layer or multi-layer cushion film made of polyolefin and/or polypropylene.

According to one embodiment, the fourth cover film 142 may include a single-layer or multi-layer film made of polyester and/or polypropylene.

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

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

According to one 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 as described in FIGS. 19A to 20C, and at this time, may be manufactured using the same manufacturing apparatus. there is. That is, the fourth film 14 may be attached to the first film 11 in the same way 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 . At this time, 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 in a non-bonded state, and optionally, the second film 12 is a separate tape other than the third film 13. And/or it may be fixed by bonding means.

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 opposed to 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 press block 32 .

Next, the driving unit 324 is operated to move the pressure block 32 in the direction of the fourth film 14, and the cushion block 323 moves in accordance with the motion of the pressure block 32 to move the fourth film 14. The film 14 is subjected to a second pressure. 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 portion of the first film and the fourth film, thereby heating and bonding the overlapping portion of the first film and the fourth film. let it At this time, as described above, the fourth bonding film 141 may be formed only on the first region 14-1 to form a structure in which only the first region 14-1 is bonded. Alternatively, the heat bonding process by the coil unit 313 may be performed only on a partial area of the fourth bonding film 141 so that only the first area 14 - 1 is bonded.

Bonding of the first film 11 and the fourth film 14 is completed by applying the second pressure and/or the electromagnetic wave, and the fourth film 14 does not overlap the first through hole 113. A 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 having a flange 22 around the opening.

According to one embodiment, the container 2 may be made of a plastic material, and may be transparent 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 can be easily combined with the seaming lid 15, which is a metal material. According to one embodiment, transparent polypropylene may be used as a plastic material forming the container 2 .

Such a 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 made of a thin metal material. An aluminum material may be used as a metal material forming the lid 15, 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 shown in FIG. 25 , the lid 15 may have an open central portion, 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, the 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 located corresponding to the second flange 152, located between the second body 151 and the second flange 152 and extending perpendicularly to the ground, provided to be inserted into the body 21 through the inlet connected flange 154, and a third flange 153 positioned at an outer end of the second flange 152.

The sealing film 1 bonded to the lid 15 may be applied with the sealing film 1 of all embodiments described in this specification. According to one embodiment, as shown in FIG. 25, a handle 11-3 may be formed on one edge of the sealing film 1, 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 grabbing and pulling the handle 11-3.

Meanwhile, 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 part 13 is located at the edge of the inlet 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, as can be seen in FIG. 26, the seaming part 3 is located along the edge of the inlet of the container 2, and the first end ( 31), a second end 32 opposite to the first end 31, and a connecting portion 33 located between the first end 31 and the second end 32 and having an arcuate surface. can include

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

In the case of the container 2 formed of a plastic material with low ductility, the length of the first flange 22 is formed long enough to a certain extent so that the end can be bent upward again after being smoothly bent downward, and the first flange 22 ) and the main body 21, a part of the third flange 153 and/or the second flange 152 formed of a highly ductile metal material is 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. Then, the end of the first flange 22 is bent upward, so that the first flange 22 and the end of the bent first flange 22 are between the second flange 152 and the third flange 153. can be placed. 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 main body 21 of the container 2. have

According to one embodiment, the first length (d1) between the upper surface of the second body 151 of the lid 15 and the second end 32, which is the upper end of the seaming part 3, is the first length 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 will have a more compact size when viewed from the outside. In addition, since the seaming portion 3 is not formed so thickly, 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 exemplary, and those skilled in the art will understand that various modifications and equivalent other embodiments are possible therefrom. You will be able to. Therefore, the true protection scope of the present invention should be defined only by the appended claims.

1: sealing film
2: sealing vessel
11: first film
12: second film
13: third film
14: 4th film
113: first through hole
133: second through hole
31: support block
32: press block
33: control unit

Claims (1)

A first film comprising an aluminum material, including a 1-1 surface and a 1-2 surface opposite to the 1-1 surface, and having a first through hole; and
Including; a second film bonded to the 1-1 side,
The second film is disposed to overlap the first through hole,
Further comprising a fourth film provided to have flexibility and at least partially bonded to the first film;
The fourth film,
a pair of first regions located on both edges of the fourth film and bonded to first and second surfaces of the first film; and
a second region located between the first regions of the central portion of the fourth film and not bonded to the first film;
The sealing film, wherein the width of the second region is greater than that of the second film.

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