PACKAGING BODY

BACKGROUND
Technical Field

The present invention relates to a packaging body.

Conventionally, a packaging body is known which is configured to automatically discharge steam generated by heating when contents are heated by a microwave oven and whereby pressure in an accommodation space increases.

For example, Patent Literature 1 discloses a lid material that is used for sealing an opening of a container body by heat sealing to a flange of the container body and has a steam vent hole and a steam vent label for sealing the steam vent hole. The steam vent hole label of the lid material has a first layer that is an outermost layer made of a heat-shrinkable film, a second layer made of a film not having heat shrinkability and an adhesive layer. An adhesive layer for bonding the first layer and the second layer has one or more strip-like non-adhesive parts, and the strip-like non-adhesive parts are orthogonal to a heat shrinkage direction of the first layer.

According to the lid material disclosed in Patent Literature 1, when the package body is heated by a microwave oven, the heat-shrinkable film shrinks due to the temperature of generated steam, and the steam vent label is warped upward to open the steam vent hole, thereby automatically releasing the steam.

In addition, Patent Literature 2 discloses a labeled container having a container including an opening for steam discharge and a steam release label stuck so as to cover the opening. The steam release label can form a steam release port through which steam discharged from the opening passes and has a variable display part including a temperature indicating ink part whose color development state changes in a predetermined temperature range.

According to the labeled container disclosed in Patent Literature 2, since the steam release label can form the steam release port, steam can be discharged when the contents are heated while the opening of the container for microwave treatment is closed.

- [Citation List] [Patent Literature] Patent Literature 1: JP-A-2015-20782; Patent Literature 2: JP-A-2019-177907.

SUMMARY OF THE INVENTION
Technical Problem

However, the lid material disclosed in Patent Literature 1 and the labeled container disclosed in Patent Literature 2 have the following problem.

That is, in the case of the lid material disclosed in Patent Literature 1, after the package body is heated by a microwave oven, the steam vent hole remains open. Hence, when the package body accommodating the contents is carried, for example, when the package body is taken away from a store, the contents may leak from the steam vent hole.

In addition, in the case of the labeled container illustrated in Patent Literature 2, after the labeled container is heated by a microwave oven, although the opening of the container for microwave treatment is covered with the steam release label, the steam release port formed in the steam release label remains open. Hence, as in the lid material disclosed in Patent Literature 1, when the labeled container accommodating the contents is carried, the contents may leak from the steam release port.

Thus, the prevent invention has been made to solve the above conventional problems and has an object of providing a packaging body that can be carried without the contents leaking after the contents are heated by a microwave oven.

Solution to Problem

In order to solve the above problem, a packaging body according to an aspect of the present invention is a packaging body that accommodates contents to be heated by a microwave oven. The gist is that the packaging body includes a container having an accommodation space accommodating the contents and a lid attached to the container, wherein the lid is attached to the container so as to close the accommodation space and includes a lid member in which a steam release port is formed to discharge steam generated by heating and a label stuck to the lid member so as to close the steam release port, and the label is peeled from the lid member before the contents are heated so that a stuck state remains partially, to expose the steam release port, maintains a state in which the steam release port is exposed while the contents are heated, and is capable of being re-stuck to the lid member so as to cover the steam release port after the contents are heated.

According to the packaging body, since the label is re-stuck to the lid member so as to cover the steam release port after the contents are heated, the steam release port can be scaled, whereby the packaging body can be carried without the contents leaking from the steam release port. In addition, since the state in which the steam release port is exposed is maintained while the contents are heated, the steam can be released through the steam release port. If the label closed the steam release port while the contents were heated, the steam would be released through another part, for example, a mounting portion (sealing portion) between the lid member and the container, whereby the contents might leak through the mounting portion when the packaging body was carried after the heating.

In addition, in the packaging body, the label preferably includes an innermost layer configured by an adhesive layer to be stuck to the lid member, an intermediate layer laminated on the innermost layer, and an outermost layer laminated on the intermediate layer and configured by a heat-shrinkable film.

According to the packaging body, since the label includes the outermost layer configured by the heat-shrinkable film, the heat-shrinkable film shrinks so as to warp outward with respect to the part on which the heat-shrinkable film is partially stuck to the lid member, due to the temperature of the steam generated while the contents are heated. Hence, the label warps, whereby the state in which the steam release port is exposed can be maintained. In addition, since the heat-shrinkable film is disposed as the outermost layer of the label, when the heat-shrinkable film shrinks so as to warp outward, there is no layered component that interferes with the shrinkage. Hence, the label warps easily and smoothly, whereby the state in which the steam release port is exposed can be maintained.

In addition, in the packaging body, a thermal shrinkage percentage of the heat-shrinkable film configuring the outermost layer is preferably 5% to 50% in MD and TD after heating at 100° C. for 30 minutes.

According to the packaging body, while the contents are heated, risks can be avoided that the steam release port becomes closed due to the label not warping, and that the label cannot be re-stuck due to the significantly large amount of warpage of the label. If the thermal shrinkage percentage of the heat-shrinkable film is less than 5%, there is a risk that the label may not warp and may close the steam release port. In contrast, if the thermal shrinkage percentage of the heat-shrinkable film is greater than 50%, there is a risk that the amount of warpage of the label is too large, whereby the label cannot be re-stuck to the lid member.

In addition, in the packaging body, a thickness of the heat-shrinkable film configuring the outermost layer is preferably 12 μm to 30 μm.

According to the packaging body, while the contents are heated, a risk of the steam release port being closed due to the label not warping, and of the label not becoming re-stuck due to the significantly large amount of warpage of the label can be avoided. If the thickness of the heat-shrinkable film is greater than 30 μm, there is a risk that the label may not warp and may close the steam release port. In contrast, if the thickness of the heat-shrinkable film is less than 12 μm, there is a risk that the amount of warpage of the label is too large, whereby the label cannot be re-stuck to the lid member.

In addition, a packaging body according to another aspect of the present invention is a packaging body that accommodates contents to be heated by a microwave oven. The gist is that the packaging body includes a sheet having a plurality of sheet parts and a seal part that seals the plurality of sheet parts so as to form an accommodation space that accommodates the contents, wherein a steam release port for discharging steam generated by heating is formed to any one of the plurality of sheet parts, and a label is provided which is stuck to the any one of the sheet parts formed to the steam release port so as to close the steam release port, and the label is peeled from the any one of the sheet parts before the contents are heated so that a stuck state remains partially, to expose the steam release port, maintains a state in which the steam release port is exposed while the contents are heated, and is capable of being re-stuck to the any one of the sheet parts so as to cover the steam release port after the contents are heated.

According to the packaging body, since the label is re-stuck to the any one of the sheet parts formed to the steam release port so as to cover the steam release port after the contents are heated, the steam release port can be sealed, whereby the packaging body can be carried without the contents leaking from the steam release port. In addition, since the label maintains the state in which the steam release port is exposed while the contents are heated, the steam can be released through the steam release port. If the label closes the steam release port while the contents are heated, the steam is released through the seal part, whereby the contents may leak through the seal part when the packaging body is carried after the heating.

In addition, in the packaging body, the label preferably includes an innermost layer configured by an adhesive layer to be stuck to the any one of the sheet parts, an intermediate layer laminated on the innermost layer, and an outermost layer laminated on the intermediate and configured by a heat-shrinkable film.

According to the packaging body, since the label includes the outermost layer configured by the heat-shrinkable film, the heat-shrinkable film shrinks so as to warp outward with respect to the part on which the heat-shrinkable film is partially stuck to any one of the sheet parts, due to the temperature of the steam generated when the contents are heated. Hence, the label warps, whereby the state in which the steam release port is exposed can be maintained. In addition, since the heat-shrinkable film is disposed as the outermost layer of the label, when the heat-shrinkable film shrinks so as to warp outward, there is no layered component that interferes with the shrinkage. Hence, the label warps easily and smoothly, whereby the state in which the steam release port is exposed can be maintained.

According to the packaging body, while the contents are heated, there is no risk of the steam release port being closed due to the label not warping, and of the label not becoming re-stuck due to the significantly large amount of warpage of the label. If the thermal shrinkage percentage of the heat-shrinkable film is less than 5%, there is a risk that the label may not warp and may close the steam release port. In contrast, if the thermal shrinkage percentage of the heat-shrinkable film is greater than 50%, there is a risk that the amount of warpage of the label may be too large, whereby the label cannot be re-stuck to any one of the sheet parts.

In addition, in the packaging body, a thickness of the heat-shrinkable film configuring the outermost layer is preferably 12 μm to 30 μm.

According to the packaging body, while the contents are heated, the risks can be avoided that the steam release port may be closed due to the label not warping, and that the label cannot be re-stuck due to the significantly large amount of warpage of the label. If the thickness of the heat-shrinkable film is greater than 30 μm, there is a risk that the label may not warp and may close the steam release port. In contrast, if the thickness of the heat-shrinkable film is less than 12 μm, there is a risk that the amount of warpage of the label may be too large, whereby the label cannot be re-stuck to the lid member.

Advantageous Effects of the Invention

According to the packaging body of the present invention, a packaging body can be provided which can be carried without contents leaking after the contents are heated by a microwave oven.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a perspective view of a packaging body according to a first embodiment of the present invention in a state before contents are heated;

FIG. 2 is a perspective view of the packaging body in a state in which a label is partially peeled from the state illustrated in FIG. 1;

FIG. 3 is a sectional view taken along a line 3-3 in FIG. 2;

FIG. 4 is a perspective view of a state in which the contents are heated from the state illustrated in FIG. 2;

FIG. 5 is a sectional view taken along a line 5-5 in FIG. 4;

FIG. 6 is a perspective view of the packaging body in a state in which the label is re-stuck from the state illustrated in FIG. 4;

FIG. 7 is a front view of a packaging body according to a second embodiment of the present invention in a state before contents are heated;

FIG. 8 is a front view of the packaging body in a state in which a label is partially peeled from the state illustrated in FIG. 7;

FIG. 9 is a sectional view taken along a line 9-9 in FIG. 8;

FIG. 10 is a perspective view of a state in which the contents are heated from the state illustrated in FIG. 8;

FIG. 11 is a sectional view taken along a line 11-11 in FIG. 10;

FIG. 12 is a front view of the packaging body in a state in which the label is re-stuck from the state illustrated in FIG. 10; and

FIG. 13 is a front view for describing a packaging body of a comparative example 4.

DETAILED DESCRIPTION

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. It is noted that the drawings are schematic and may differ from actual ones. In addition, the following embodiments exemplify devices and methods for embodying the technical idea of the present invention and do not limit the configuration thereof to those described below. That is, the technical idea of the present invention can be variously modified within the technical scope set forth in the claims.

First Embodiment

FIG. 1 illustrates a packaging body according to a first embodiment of the present invention in a state before contents are heated. A packaging body 1 illustrated in FIG. 1 accommodates contents C to be heated by a microwave oven and discharges steam X (refer to FIG. 4 and FIG. 5) generated from the contents C. The contents C are an object, for example a food, to be heated which generates steam by being heated by a microwave oven.

The packaging body 1 includes a container 10 having an accommodation space 12 accommodating the contents C and a lid 20 attached to the container 10.

The container 10 includes a container body 11 having a rectangular parallelepiped shape and a flange part 13 provided to an upper edge of the container body 11. The container body 11 has the accommodation space 12 accommodating the contents C. The upper surface of the container body 11 is open. The material of the container 10 is, for example, polypropylene containing a filler.

As illustrated in FIG. 1, the lid 20 is attached to the container 10 so as to close the accommodation space 12.

As illustrated in FIG. 1, the lid 20 is attached to the container 10 so as to close the accommodation space 12 and includes a lid member 30 in which a steam release port 34 is formed to discharge steam generated by heating and a label 40 stuck to the lid member 30 so as to close the steam release port 34.

The lid member 30 is formed in a rectangular flat-plate shape having a narrow width in the longitudinal direction (vertical direction in FIG. 1), a long length in the lateral direction (horizontal direction in FIG. 1), and a predetermined plate thickness. The lid member 30 is heat-sealed to the flange part 13 provided to the container body 11 to close the opening of the container body 11, thereby closing the accommodation space 12.

As illustrated in FIG. 1, the lid member 30 includes an innermost layer 31 heat-sealed to the flange part 13, an intermediate layer 32 laminated on the innermost layer 31, and an outermost layer 33 laminated on the intermediate layer 32. As the innermost layer 31, an easy peel sealant is used. As the intermediate layer 32, an oriented substrate, for example, an oriented polypropylene film (OPP), an oriented polyethylene terephthalate film (PET), an oriented nylon film (Ony), or the like is used. In addition, as the outermost layer 33, a transparent oriented substrate, for example, a transparent evaporated PET, is used.

It is noted that gas barrier layers, not shown, are provided between the innermost layer 31 and the intermediate layer 32 and between the outermost layer 33 and the intermediate layer 32.

As illustrated in FIG. 1, the steam release port 34 is formed at a substantially central part of the lid member 30 and is formed as one broken line having a laterally-facing U-shape. Forming the steam release port 34 having a laterally-facing U-shape to the lid member 30 forms a tongue segment 35 extending in the lateral direction from a base end part 35a in a cantilever manner in an inner area of the steam release port 34.

In addition, as illustrated in FIG. 1, the label 40 is formed in a rectangular flat-plate shape having a predetermined plate thickness and is stuck to the lid member 30 so that the longitudinal direction thereof is the lateral direction and so as to close the steam release port 34.

As illustrated in FIG. 2 and FIG. 3, the label 40 is peeled from the lid member 30 before the contents C are heated, so that the stuck state remains partially, whereby the steam release port 34 is exposed.

Herein, when the label 40 is peeled, as illustrated in FIG. 2 and FIG. 3, the label 40 is peeled from one end part 40b in the longitudinal direction of the label 40 on the base end part 35a side of the tongue segment 35 formed to the lid member 30 to keep the stuck state of a base end part 40a on the other end part 40c side in the longitudinal direction of the label 40. Hence, as illustrated in FIG. 3, while the tongue segment 35 curls on the base end part 35a so as to slightly rise outward (upward), the steam release port 34 is exposed.

As described above, peeling the label 40 from the lid member 30 so that the stuck state of the base end part 40a is left can re-stick the label 40 at an exact position so as to tightly close the steam release port 34 when the label 40 is re-stuck as described later.

Peeling the label 40 from one end part 40b in the longitudinal direction of the label 40 on the base end part 35a side of the tongue segment 35 formed to the lid member 30 can prevent the tongue segment 35 from being torn from the lid member 30. If the label 40 is peeled from the other end part 40c side in the longitudinal direction of the label 40, the tongue segment 35 may curl excessively on the base end part 35a outward (upward) in a state in which the tongue segment 35 is stuck to the label 40, whereby the tongue segment 35 may be torn from the lid member 30.

In addition, as illustrated in FIG. 4 and FIG. 5, while the contents C are heated, the label 40 maintains a state in which the steam release port 34 is exposed.

Hence, as illustrated in FIG. 4 and FIG. 5, while the contents C are heated, the steam X generated from the heated contents C can be released through the steam release port 34. Herein, if the label 40 were to close the steam release port 34 while the contents C were heated, the steam would be released through another part, for example, a mounting portion (sealing portion) between the lid member 30 and the container 10, whereby the contents C may leak through the mounting portion when the packaging body is carried after the heating.

In addition, after the contents C are heated, as illustrated in FIG. 6, the label 40 can be re-stuck to the lid member 30 so as to cover the steam release port 34. When the label 40 is re-stuck, the label 40 is re-stuck to the lid member 30 from one end part 40b side in the longitudinal direction opposite to the other end part 40c side in the longitudinal direction on which the base end part 40a that is stuck is present.

Hence, the steam release port 34 can be sealed, whereby the packaging body 1 can be carried without the contents C leaking from the steam release port 34.

As illustrated in FIG. 3 and FIG. 5, the label 40 includes an innermost layer 41 configured by an adhesive layer to be stuck to the lid member 30, an intermediate layer 42 laminated on the innermost layer 41, and an outermost layer 43 laminated on the intermediate layer 42 and configured by a heat-shrinkable film.

As the adhesive layer configuring the innermost layer 41, for example, an acrylic adhesive layer is used.

In addition, as the intermediate layer 42, a film not having heat shrinkability, for example, an oriented substrate such as an oriented polypropylene film (OPP), an oriented polyethylene terephthalate film (PET), an oriented nylon film (Ony), or the like is used.

Furthermore, as the heat-shrinkable film configuring the outermost layer 43, for example, a PET film having a heat-shrinkable property is used.

As described above, since the label 40 includes the heat-shrinkable film configuring the outermost layer 43, as illustrated in FIG. 5, the heat-shrinkable film configuring the outermost layer 43 shrinks so as to warp outward (upward) with respect to the base end part 40a on the other end part 40c side in the longitudinal direction of the label 40 on which the stuck state remains, due to the temperature of the steam X generated while the contents C are heated. Hence, the label 40 warps, whereby the state in which the steam release port 34 is exposed can be maintained.

In addition, since the heat-shrinkable film is disposed as the outermost layer 43 of the label, when the heat-shrinkable film shrinks so as to warp outward, there is no layered component that interferes with the shrinkage. Hence, the label 40 warps easily and smoothly, whereby the state in which the steam release port 34 is exposed can be maintained.

Here, the thermal shrinkage percentage of the heat-shrinkable film configuring the outermost layer 43 is 5% to 50% in MD (Machine Direction: flow direction) and TD (Transverse Direction: perpendicular direction) after heating at 100° C. for 30 minutes. Hence, while the contents C are heated, risks can be avoided that the steam release port 34 is closed due to the label 40 not warping, and that the label 40 cannot be re-stuck due to the significantly large amount of warpage of the label 40. If the thermal shrinkage percentage of the heat-shrinkable film is less than 5%, there is a risk that the label 40 may not warp and may close the steam release port 34. In contrast, if the thermal shrinkage percentage of the heat-shrinkable film is greater than 50%, there is a risk that the amount of warpage of the label 40 is too large, whereby the label 40 cannot be re-stuck to the lid member 30.

In addition, the thickness of the heat-shrinkable film configuring the outermost layer 43 is 12 μm to 30 μm. Hence, while the contents C are heated, the risks can be avoided that the steam release port 34 is closed due to the label 40 not warping, and that the label 40 cannot be re-stuck due to the significantly large amount of warpage of the label 40. If the thickness of the heat-shrinkable film is greater than 30 μm, there is a risk that the label 40 may not warp and may close the steam release port 34. In contrast, if the thickness of the heat-shrinkable film is less than 12 μm, there is a risk that the amount of warpage of the label 40 is too large, whereby the label 40 cannot be re-stuck to the lid member 30.

Regarding the packaging body 1 configured as described above, when the contents C in the packaging body 1 are eaten, first, as illustrated in FIG. 2 and FIG. 3, before the contents C are heated, the label 40 is peeled from the lid member 30 from one end part 40b side in the longitudinal direction of the label 40 so that the stuck state of the base end part 40a remains, to expose the steam release port 34.

Next, the packaging body 1 in which the steam release port 34 is exposed is set in a microwave oven to heat the contents C.

When the heating is performed, as illustrated in FIG. 4 and FIG. 5, the heat-shrinkable film configuring the outermost layer 43 of the label 40 shrinks so as to warp outward (upward) with respect to the base end part 40a on the other end part 40c side in the longitudinal direction of the label 40 on which the stuck state remains, due to the temperature of the steam X generated when the contents C are heated. Hence, the label 40 warps, thereby maintaining the state in which the steam release port 34 is exposed.

Hence, the steam X generated from the heated contents C is released through the steam release port 34.

Next, after the heating of the contents C by the microwave oven is completed, the packaging body 1 is taken from the microwave oven, and, as illustrated in FIG. 6, the label 40 is re-stuck to the lid member 30 from one end part 40b side in the longitudinal direction opposite to the other end part 40c side in the longitudinal direction on which the base end part 40a that is stuck is present, thereby covering the steam release port 34.

Next, after the steam release port 34 is covered with the label 40, the packaging body 1 is put into an own bag or the like and is carried (taken away).

In this case, since the steam release port 34 is covered with the label 40, the steam release port 34 is sealed, whereby the packaging body 1 can be carried without the contents C leaking from the steam release port 34.

Thereafter, the lid 20 is removed from the container 10, and the heated contents C can be eaten.

As described above, according to the packaging body 1 of the first embodiment, the label 40 stuck so as to close the steam release port 34 formed in the lid member 30 is peeled from the lid member 30 before the contents C are heated so that the stuck state remains partially, whereby the steam release port 34 is exposed. While the contents C are heated, the state in which the steam release port 34 is exposed is maintained. After the contents C are heated, the label 40 can be re-stuck to the lid member 30 so as to cover the steam release port 34.

Hence, since the label 40 is re-stuck to the lid member 30 so as to cover the steam release port 34 after the contents C are heated, the steam release port 34 can be sealed, whereby the packaging body can be carried without the contents C leaking from the steam release port 34. In addition, since the state in which the steam release port 34 is exposed is maintained while the contents C are heated, the steam X can be released through the steam release port 34. If the label 40 closes the steam release port 34 while the contents C are heated, the steam X is released through another part, for example, a mounting portion (sealing portion) between the lid member 30 and the container 10, whereby the contents C may leak through the mounting portion when the packaging body is carried after the heating.

In addition, according to the packaging body 1 of the first embodiment, the label 40 includes the innermost layer 41 configured by an adhesive layer to be stuck to the lid member 30, the intermediate layer 42 laminated on the innermost layer 41, and the outermost layer 43 laminated on the intermediate layer 42 and configured by a heat-shrinkable film.

Hence, since the label 40 includes the heat-shrinkable film configuring the outermost layer 43, the heat-shrinkable film shrinks so as to warp outward with respect to the part on which the heat-shrinkable film is partially stuck to the lid member 30, due to the temperature of the steam X generated when the contents C are heated. Hence, the label 40 warps, whereby the state in which the steam release port 34 is exposed can be maintained. In addition, since the heat-shrinkable film is disposed as the outermost layer of the label 40, when the heat-shrinkable film shrinks so as to warp outward, there is no layered component that interferes with the shrinkage. Hence, the label 40 warps easily and smoothly, whereby the state in which the steam release port 34 is exposed can be maintained.

In addition, according to the packaging body 1 of the first embodiment, the thermal shrinkage percentage of the heat-shrinkable film configuring the outermost layer 43 is 5% to 50% in MD and TD after heating at 100° C. for 30 minutes.

Hence, while the contents C are heated, risks can be avoided that the steam release port 34 is closed due to the label 40 not warping, and that the label 40 cannot be re-stuck due to the significantly large amount of warpage of the label 40.

In addition, according to the packaging body 1 of the first embodiment, the thickness of the heat-shrinkable film configuring the outermost layer 43 is 12 μm to 30 μm.

Hence, while the contents C are heated, the risks can be avoided that the steam release port 34 is closed due to the label 40 not warping, and that the label 40 cannot be re-stuck due to the significantly large amount of warpage of the label 40.

Second Embodiment

Next, a packaging body according to a second embodiment of the present invention will be described with reference to FIG. 7 to FIG. 12.

FIG. 7 illustrates a packaging body according to the second embodiment of the present invention in a state before contents are heated. As in the packaging body 1 of the first embodiment illustrated in FIG. 1, a packaging body 101 illustrated in FIG. 7 accommodates the contents C to be heated by a microwave oven and discharges the steam X (refer to FIG. 10 and FIG. 11) generated from the contents C. The contents C are an object to be heated generating steam by being heated by the microwave oven, for example, a food.

The packaging body 101 of the second embodiment differs from the packaging body 1 of the first embodiment in that the packaging body 101 configures a standing pouch though the packaging body 1 is configured by the container 10 and the lid 20.

Hence, the packaging body 101 includes a sheet 110 having a plurality of (three in the present embodiment) sheet parts, that is, a first sheet part 111, a second sheet part 112, and a bottom sheet part 113 and a seal part 120 that seals the first sheet part 111, the second sheet part 112, and the bottom sheet part 113 so as to form an accommodation space 114 that accommodates the contents C.

The first sheet part 111 and the second sheet part 112 are opposed to each other so that the accommodation space 114 accommodating the contents C is formed between the first sheet part 111 and the second sheet part 112. The first sheet part 111 and the second sheet part 112 are formed in substantially rectangular shapes extending in the horizontal direction (the horizontal direction in FIG. 7) and the vertical direction (the vertical direction in FIG. 7). The bottom sheet part 113 is disposed on the bottom part of the first sheet part 111 and the bottom part of the second sheet part 112 so as to close the part between the bottom part (lower part) of the first sheet part 111 and the bottom part (lower part) of the second sheet part 112.

As illustrated in FIG. 9, the first sheet part 111, the second sheet part 112, and the bottom sheet part 113 include an innermost layer 111a, an intermediate layer 111b laminated on the innermost layer 111a, and an outermost layer 111c. As the innermost layer 111a, for example, non-oriented polypropylene (CPP) is used. As the intermediate layer 111b, an oriented substrate, for example, an oriented polypropylene film (OPP), an oriented polyethylene terephthalate film (PET), an oriented nylon film (Ony), or the like is used. In addition, as the outermost layer 111c, a transparent oriented substrate, for example, a transparent evaporated PET, is used.

The seal part 120 includes an upper side seal part 121, a lower side seal part 122, a first lateral seal part 123, and a second lateral seal part 124. The upper side seal part 121 joins the innermost layers 111a on the upper edges of the first sheet part 111 and the second sheet part 112 to each other. The lower side seal part 122 joins the innermost layer 111a of the bottom sheet part 113, and the innermost layer 111a on the lower edge of the first sheet part 111 and the innermost layer 111a on the lower edge of the second sheet part 112, to each other. The first lateral seal part 123 joins the innermost layers 111a on the left edges of the first sheet part 111 and the second sheet part 112 to each other. The second lateral seal part 124 joins the innermost layers 111a on the right edges of the first sheet part 111 and the second sheet part 112 to each other.

In addition, the first sheet part 111 is provided with a steam release port 115 for discharging the steam X generated by heating (refer to FIG. 10 and FIG. 11).

As illustrated in FIG. 7, the steam release port 115 is formed at a substantially central part of the first sheet part 111 and is formed as one broken line having a horizontally-facing U-shape. Forming the steam release port 115 having a horizontally-facing U-shape to the first sheet part 111 forms a tongue segment 116 extending in the horizontal direction from a base end part 116a in a cantilever manner in an inner area inside the steam release port 115.

In addition, the packaging body 101 includes a label 130 stuck to the first sheet part 111, which is provided with the steam release port 115, so as to close the steam release port 115.

As in the label 40 in the first embodiment, the label 130 is formed in a rectangular flat-plate shape having a predetermined plate thickness and is stuck to the first sheet part 111 so that the longitudinal direction thereof is the horizontal direction and so as to close the steam release port 115.

As illustrated in FIG. 8 and FIG. 9, the label 130 is peeled from the first sheet part 111 before the contents C are heated so that the stuck state remains partially, whereby the steam release port 115 is exposed.

Herein, when the label 130 is peeled, as illustrated in FIG. 8 and FIG. 9, the label 130 is peeled from one end part 130b in the longitudinal direction of the label 130 on the base end part 116a side of the tongue segment 116 formed to the first sheet part 111 to keep the stuck state of a base end part 130a on the other end part 130c side in the longitudinal direction of the label 130. Hence, as illustrated in FIG. 9, while the tongue segment 116 curls on the base end part 116a so as to slightly rise outward (upward), the steam release port 115 is exposed.

As described above, peeling the label 130 from the first sheet part 111 so that the stuck state of the base end part 130a is kept can re-stick the label 130 at an exact position so as to tightly close the steam release port 115 when the label 130 is re-stuck as described later.

Peeling the label 130 from one end part 130b in the longitudinal direction of the label 130 on the base end part 116a side of the tongue segment 116 formed to the first sheet part 111 can prevent the tongue segment 116 from being torn from the first sheet part 111. If the label 130 is peeled from the other end part 130c side in the longitudinal direction of the label 130, the tongue segment 116 may curl excessively on the base end part 116a outward (upward) in a state in which the tongue segment 116 is stuck to the label 130, whereby the tongue segment 116 may be torn from the first sheet part 111.

In addition, as illustrated in FIG. 10 and FIG. 11, while the contents C are heated, the label 130 maintains a state in which the steam release port 115 is exposed.

Hence, as illustrated in FIG. 10 and FIG. 11, while the contents C are heated, the steam X generated from the heated contents C can be released through the steam release port 115. Herein, if the label 130 closes the steam release port 115 while the contents C are heated, the steam is released through any of the upper side seal part 121, the lower side seal part 122, the first lateral seal part 123, and the second lateral seal part 124, whereby the contents C may leak through the seal part when the packaging body is carried after the heating.

In addition, after the contents C are heated, as illustrated in FIG. 12, the label 130 can be re-stuck to the first sheet part 111 so as to cover the steam release port 115. When the label 130 is re-stuck, the label 130 is re-stuck to the first sheet part 111 from one end part 130b side in the longitudinal direction opposite to the other end part 130c side in the longitudinal direction on which the base end part 130a that is stuck is present.

Hence, the steam release port 115 can be sealed, whereby the packaging body 101 can be carried without the contents C leaking from the steam release port 115.

As illustrated in FIG. 9 and FIG. 11, the label 130 includes an innermost layer 131 configured by an adhesive layer to be stuck to the first sheet part 111, an intermediate layer 132 laminated on the innermost layer 131, and an outermost layer 133 laminated on the intermediate layer 132 and configured by a heat-shrinkable film.

As the adhesive layer configuring the innermost layer 131, for example, an acrylic adhesive layer is used.

In addition, as the intermediate layer 132, a film not having heat shrinkability, for example, an oriented substrate such as an oriented polypropylene film (OPP), an oriented polyethylene terephthalate film (PET), an oriented nylon film (Ony), or the like is used.

Furthermore, as the heat-shrinkable film configuring the outermost layer 133, for example, a PET film having a heat-shrinkable property is used.

As described above, since the label 130 includes the outermost layer 133 configured by the heat-shrinkable film, as illustrated in FIG. 11, the heat-shrinkable film configuring the outermost layer 133 shrinks so as to warp outward (upward) with respect to the base end part 130a on the other end part 130c side in the longitudinal direction of the label 130 on which the stuck state remains, due to the temperature of the steam X generated when the contents C are heated. Hence, the label 130 warps, whereby the state in which the steam release port 115 is exposed can be maintained.

In addition, since the heat-shrinkable film is disposed as the outermost layer 133 of the label, when the heat-shrinkable film shrinks so as to warp outward, there is no layered component that interferes with the shrinkage. Hence, the label 130 warps easily and smoothly, whereby the state in which the steam release port 115 is exposed can be maintained.

Here, the thermal shrinkage percentage of the heat-shrinkable film configuring the outermost layer 133 is 5% to 50% in MD (Machine Direction: flow direction) and TD (Transverse Direction: perpendicular direction) after heating at 100° C. for 30 minutes. Hence, while the contents C are heated, risks can be avoided that the steam release port 115 is closed due to the label 130 not warping, and that the label 130 cannot be re-stuck due to the significantly large amount of warpage of the label 130. If the thermal shrinkage percentage of the heat-shrinkable film is less than 5%, there is a risk that the label 130 may not warp and may close the steam release port 115. In contrast, if the thermal shrinkage percentage of the heat-shrinkable film is greater than 50%, there is a risk that the amount of warpage of the label 130 is too large, whereby the label 130 cannot be re-stuck to the first sheet part 111.

In addition, the thickness of the heat-shrinkable film configuring the outermost layer 133 is 12 μm to 30 μm. Hence, while the contents C are heated, the risks can be avoided that the steam release port 115 is closed due to the label 130 not warping, and that the label 130 cannot be re-stuck due to the significantly large amount of warpage of the label 130. If the thickness of the heat-shrinkable film is greater than 30 μm, there is a risk that the label 130 may not warp and may close the steam release port 115. In contrast, if the thickness of the heat-shrinkable film is less than 12 μm, there is a risk that the amount of warpage of the label 130 is too large, whereby the label 130 cannot be re-stuck to the first sheet part 111.

Regarding the packaging body 101 configured as described above, when the contents C in the packaging body 101 are eaten, first, as illustrated in FIG. 8 and FIG. 9, before the contents C are heated, the label 130 is peeled from the first sheet part 111 from one end part 130b side in the longitudinal direction of the label 130 so that the stuck state of the base end part 130a remains, to expose the steam release port 115.

Next, the packaging body 101 in which the steam release port 115 is exposed is set in a microwave oven to heat the contents C.

When the heating is performed, as illustrated in FIG. 10 and FIG. 11, the heat-shrinkable film configuring the outermost layer 133 of the label 130 shrinks so as to warp outward (upward) with respect to the base end part 130a on the other end part 130c side in the longitudinal direction of the label 130 on which the stuck state remains, due to the temperature of the steam X generated while the contents C are heated. Hence, the label 130 warps, whereby the state in which the steam release port 115 is exposed is maintained.

Hence, the steam X generated from the heated contents C is released through the steam release port 115.

Next, after the heating of the contents C by the microwave oven is completed, the packaging body 101 is taken from the microwave oven, and, as illustrated in FIG. 12, the label 130 is re-stuck to the first sheet part 111 from one end part 130b side in the longitudinal direction opposite to the other end part 130c in the longitudinal direction on which the base end part 130a that is stuck is present, thereby covering the steam release port 115.

Next, after the steam release port 115 is covered with the label 130, the packaging body 101 is put into an own bag or the like and is carried (taken away).

In this case, since the steam release port 115 is covered with the label 130, the steam release port 115 is sealed, whereby the packaging body 101 can be carried without the contents C leaking from the steam release port 115.

Thereafter, the packaging body 101 is cut along a cut line CL to open the accommodation space 114, whereby the heated contents C can be eaten.

As described above, according to the packaging body 101 of the second embodiment, the label 130 stuck so as to close the steam release port 115 formed in the first sheet part 111 is peeled from the first sheet part 111 before the contents C are heated so that the stuck state remains partially, whereby the steam release port 115 is exposed. While the contents C are heated, the state in which the steam release port 115 is exposed is maintained. After the contents C are heated, the label 130 can be re-stuck to the first sheet part 111 so as to cover the steam release port 115.

Hence, since the label 130 is re-stuck to the first sheet part 111 so as to cover the steam release port 115 after the contents C are heated, the steam release port 115 can be sealed, whereby the packaging body 101 can be carried without the contents C leaking from the steam release port 115. In addition, since the label 130 maintains the state in which the steam release port 115 is exposed while the contents C are heated, the steam X can be released through the steam release port 115. If the label 130 closes the steam release port 115 while the contents C are heated, the steam X is released through any of the upper side seal part 121, the lower side seal part 122, the first lateral seal part 123, and the second lateral seal part 124, whereby the contents C may leak through the seal part when the packaging body is carried after the heating.

In addition, according to the packaging body 101 of the second embodiment, the label 130 includes the innermost layer 131 configured by an adhesive layer stuck to the first sheet part 111, the intermediate layer 132 laminated on the innermost layer 131, and the outermost layer 133 laminated on the intermediate layer 132 and configured by a heat-shrinkable film.

Hence, since the label 130 includes the outermost layer 133 configuring the heat-shrinkable film, the heat-shrinkable film shrinks so as to warp outward with respect to the part on which the heat-shrinkable film is partially stuck to the first sheet part 111, due to the temperature of the steam X generated while the contents C are heated. Hence, the label 130 warps, whereby the state in which the steam release port 115 is exposed can be maintained. In addition, since the heat-shrinkable film is disposed as the outermost layer of the label 130, when the heat-shrinkable film shrinks so as to warp outward, there is no layered component that interferes with the shrinkage. Hence, the label 130 warps easily and smoothly, whereby the state in which the steam release port 115 is exposed can be maintained.

In addition, according to the packaging body 101 of the second embodiment, the thermal shrinkage percentage of the heat-shrinkable film configuring the outermost layer 133 is 5% to 50% in MD and TD after heating at 100° C. for 30 minutes.

Hence, while the contents C are heated, risks can be avoided that the steam release port 115 is closed due to the label 130 not warping, and that the label 130 cannot be re-stuck due to the significantly large amount of warpage of the label 130.

In addition, according to the packaging body 101 of the second embodiment, the thickness of the heat-shrinkable film configuring the outermost layer 133 is 12 μm to 30 μm.

Hence, while the contents C are heated, the risks can be avoided that the steam release port 115 is closed due to the label 130 not warping, and that the label 130 cannot be re-stuck due to the significantly large amount of warpage of the label 130.

Hereinbefore, embodiments of the present invention have been described. However, the present invention is not limited to the embodiments and can be variously changed and modified.

For example, the shape and the material of the container 10 of the packaging body 1 of the first embodiment are not limited to the illustrated examples.

In addition, the shape and the layer structure of the lid member 30 of the packaging body 1 of the first embodiment are not limited to the illustrated examples. Although the lid member 30 is formed in a rectangular shape, the shape can be appropriately changed depending on the shape of the container 10. In addition, the intermediate layer 32 and the outermost layer 33 of the lid member 30 may be configured as one layer.

In addition, although the packaging body 101 of the second embodiment configures a standing pouch, the packaging body 101 may be applied to pouches other than the standing pouch such as a flat bag type pouch, a gusset type pouch, and a pillar type pouch.

In addition, although the sheet 110 of the packaging body 101 of the second embodiment is configured by three sheet parts, that is, the first sheet part 111, the second sheet part 112, and the bottom sheet part 113, the number of the sheet parts is not limited to three, provided that the number is plural.

In addition, although the steam release port 34 of the packaging body 1 of the first embodiment is formed at a substantially central part of the lid member 30, the steam release port 34 may be formed at a part of the lid member 30 other than the substantially central part. In addition, although the steam release port 115 of the packaging body 101 of the second embodiment is formed at a substantially central part of the first sheet part 111, the steam release port 115 may be formed at a part of the first sheet part 111 other than the substantially central part or may be formed at the second sheet part 112 or the bottom sheet part 113. That is, the steam release port 115 may be formed at any one of the first sheet part 111, the second sheet part 112, and the bottom sheet part 113.

In addition, the shapes of the steam release port 34 of the packaging body 1 of the first embodiment and the steam release port 115 of the packaging body 101 of to the second embodiment are not limited to a laterally-facing U-shape and a horizontally-facing U-shape and may be other shapes. In addition, although the steam release ports 34, 115 are formed by one broken line, the steam release ports 34, 115 may be formed by a plurality of broken lines.

In addition, although the shapes of the label 40 of the packaging body 1 of the first embodiment and the label 130 of the packaging body 101 of the second embodiment are formed in rectangular shapes, the shapes are not limited to these if the steam release port 34 can be opened and closed.

In addition, in the labels 40, 130, the outermost layers 43, 133 are configured by heat-shrinkable films, and the intermediate layers 42, 132 are configured by films not having heat shrinkability. However, the outermost layers 43, 133 may be configured by films not having heat shrinkability, and the intermediate layers 42, 132 may be configured by heat-shrinkable films.

EXAMPLES

In order to verify the effects of the present invention, for each of the packaging bodies of examples 1 to 3 and comparative examples 1 to 2 and each of the packaging bodies of examples 4 to 6 and comparative examples 3 to 4, leakage of the contents caused when the packaging bodies are taken away was examined.

Specifications of containers, lid members, and labels of the packaging bodies of the examples 1 to 3 and the comparative example 1 are as below. Regarding the packaging body of the comparative example 2, although specifications of the container and the lid member are similar to those of the packaging bodies of the examples 1 to 3 and the comparative example 1, no steam release port was formed in the lid member, and no label was stuck.

Container

- Material: PP containing a filler
- Dimensions: length in longitudinal direction 185 mm*length in lateral direction 185 mm*depth 50 mm of the container body, width of flange part 8 mm

Lid Member

- Material: (outermost layer) transparent evaporated PET thickness 12 μm/(intermediate layer) NY thickness 15 μm/(innermost layer) easy peel thickness 30 μm
- Dimensions: length in longitudinal direction 185 mm*length in lateral direction 185 mm
- Steam release port: A steam release port having a laterally-facing U-shape is formed at a central part of the lid member.

Label

- Material: (outermost layer) PETs A to D in table 1/(intermediate layer) OPP thickness 50 μm/(innermost layer) acrylic adhesive layer thickness 20 μm
- Regarding PETs A to D configuring the outermost layer of the label,
- PET-A is DE041 produced by TOYOBO CO., LTD. and having a thermal shrinkage percentage of MD: 10% and TD: 5% after heating at 100 □ C for 30 minutes, PET-B is DE032 produced by TOYOBO CO., LTD. and having a thermal shrinkage percentage of MD:50% and TD:30% after heating at 100 □ C for 30 minutes, PET-C is S7200 produced by TOYOBO CO., LTD. and having a thermal shrinkage percentage of MD: 40% and TD: 45% after heating at 100 □ C for 30 minutes, and PET-D is E5100 produced by TOYOBO CO., LTD. and having no thermal shrinkage percentage.
- Dimensions: length in longitudinal direction 30 mm*length in lateral direction 30 mm
- Stuck position: stuck at a position at which the steam release port at a central part of the lid member is closed.

Other Conditions

After pasta soup was filled as the contents in the container, the lid member was heat-sealed to the container, and heating was performed by a microwave oven at 600 W for three minutes. Thereafter, in a state in which a shopping bag containing the cooked packaging body was held with a right hand, fast walking (at a speed of 5 km/h) for 100 m was performed.

Table 1 illustrates results of examinations of the packaging bodies in the examples 1 to 3 and the comparative examples 1 and 2.

TABLE 1

Leakage

during

Steam

taking

Label outermost layer
releasing
State during
away Ten

Material
Thickness
portion
microwaving
testers
Determination

Ex. 1
PET-A
13 μm
Steam
Label keeps
No
Good

(Heat-

release
concave curl
leakage

shrinkable

port
→ Release through

PET)

steam release port

Ex. 2
PET-B
12 μm
Steam
Label keeps
No
Good

(Heat-

release
concave curl
leakage

shrinkable

port
→ Release through

PET)

steam release port

Ex. 3
PET-C
20 μm
Steam
Label keeps
No
Good

(Heat-

release
concave curl
leakage

shrinkable

port
→ Release through

PET)

steam release port

Comp.
PET-D
12 μm
Steam
Label is in close
4/10
Poor

Ex. 1
(Non-

release
contact with steam
leakage is

heat-

port
release port
present

shrinkable

→ Release through
(from seal

PET)

seal flange
flange)

Comp.
No label and steam
Corner
Release through
6/10
Poor

Ex. 2
release port
removal
corner removal
leakage is

(Corner slightly
portion
portion without
present

removed)

abnormality
(from seal

flange)

Regarding the examples 1 to 3, during microwaving, the label maintained a concave curled state, and steam was released through the steam release port. Then, regarding leakage of the contents caused during taking away, no leakage was found by ten testers, whereby the determination result was “Good”.

Regarding the comparative example 1, during microwaving, the label was in close contact with the steam release port, and steam was released through the sealing portion (seal flange) between the lid member and the container. Hence, regarding leakage of the contents caused during taking away, the leakage of the contents from the seal flange was found by four of ten testers, whereby the determination result was “Poor”.

In addition, regarding the comparative example 2, since no steam release port is formed in the lid member, the lid member was removed from the flange part at a corner part of the container. Hence, steam was released through the corner removal portion. Then, regarding leakage of the contents caused during taking away, leakage of the contents from the corner removal portion was found by six of ten testers, whereby the determination result was “Poor”.

From the above results, regarding the packaging body including the container, the lid member, and the label, it was confirmed that using the label in which the outermost layer is configured by a heat-shrinkable film can suppress the contents from leaking during taking away.

In addition, specifications of standing pouches and labels of the packaging bodies of the examples 4 to 6 and the comparative example 3 are as below. The packaging body of the comparative example 4 will be described later.

Standing Pouch

- Material of sheet parts: (outermost layer) transparent evaporated PET thickness 12 μm/(intermediate layer) NY thickness 15 μm/(innermost layer) CPP thickness 60 μm
- Dimensions: height in vertical direction 158 mm*length in horizontal direction 160 mm, widths of the seal parts 6 mm
- Steam release port: A steam release port having a horizontally-facing U-shape is formed at a central part of the first sheet part.

Label

- Material: (outermost layer) PETs A to D in table 2/(intermediate layer) OPP thickness 50 μm/(innermost layer) acrylic adhesive layer thickness 20 μm
- Regarding PETs A to D configuring the outermost layer of the label,
- PET-A is DE041 produced by TOYOBO CO., LTD. and having a thermal shrinkage percentage of MD:10% and TD:5% after heating at 100° C. for 30 minutes, PET-B is DE032 produced by TOYOBO CO., LTD. and having a thermal shrinkage percentage of MD:50% and TD:30% after heating at 100° C. for 30 minutes, PET-C is S7200 produced by TOYOBO CO., LTD. and having a thermal shrinkage percentage of MD:40% and TD:45% after heating at 100° C. for 30 minutes, and PET-D is E5100 produced by TOYOBO CO., LTD. and having no thermal shrinkage percentage.
- Dimensions: length in longitudinal direction 30 mm*length in lateral direction 30 mm
- Stuck position: stuck at a position at which the steam release port at a central part of the first sheet part is closed.

Other Conditions

After pasta soup was filled as the contents in the accommodation space formed between the sheet parts, the seal part seals the sheets, and heating was performed by a microwave oven at 600 W for three minutes. Thereafter, in a state in which a shopping bag containing the cooked packaging body was held with a right hand, fast walking (at a speed of 5 km/h) for 100 m was performed.

Regarding Comparative Example 4

A packaging body of the comparative example 4 is illustrated in FIG. 13. The packaging body 201 includes a sheet 210 having three first sheet part 211, second sheet part 212, and bottom sheet part 213, and a seal part 220 sealing the first sheet part 211, the second sheet part 212, and the bottom sheet part 213 so as to form an accommodation space 214 accommodating the contents C. The seal part 220 includes an upper side seal part 221, a lower side seal part 222, a first lateral seal part 223, and a second lateral seal part 224.

In addition, materials of the first sheet part 211, the second sheet part 212, and the bottom sheet part 213 have an outermost layer: transparent evaporated PET thickness 12 μm/intermediate layer: NY thickness 15 μm/innermost layer: CPP thickness 60 μm. In addition, dimensions of the standing pouch are height in vertical direction 158 mm*length in horizontal direction 160 mm. In addition, widths of the upper side seal part 221, the lower side seal part 222, the first lateral seal part 223, and the second lateral seal part 224 are 6 mm.

In the packaging body 201 of the comparative example 4, no steam release port is formed, and no label is stuck. Hence, in order to release steam, as illustrated in FIG. 13, cutting was performed along a corner cut line 230 present at corner parts of the first sheet part 211 and the second sheet part 212.

Table 2 illustrates results of examinations of the packaging bodies in the examples 4 to 6 and the comparative examples 3 and 4.

TABLE 2

Leakage

during

Steam

taking

Label outermost layer
releasing
State during
away Ten

Material
Thickness
portion
microwaving
testers
Determination

Ex. 4
PET-A
13 μm
Steam
Label keeps
No leakage
Good

(Heat-

release
concave curl

shrinkable

port
→ Release

PET)

through steam

release port

Ex. 5
PET-B
12 μm
Steam
Label keeps
No leakage
Good

(Heat-

release
concave curl

shrinkable

port
→ Release

PET)

through steam

release port

Ex. 6
PET-C
20 μm
Steam
Label keeps
No leakage
Good

(Heat-

release
concave curl

shrinkable

port
→Release

PET)

through steam

release port

Comp.
PET-D
12 μm
Steam
Label is in close
8/10
Poor

Ex. 3
(Non-heat-

release
contact with
leakage is

shrinkable

port
steam release port
present

PET)

→ Release
(from side

through side seal
seal)

Comp.
No label and steam
Corner
Release through
6/10
Poor

Ex. 4
release port
portion
corner portion
leakage is

(Pouch corner

without
present

slightly removed)

abnormality
(from

corner

removal

portion)

Regarding the examples 4 to 6, during microwaving, the label maintained a concave curled state, and steam was released through the steam release port. Then, regarding leakage of the contents caused during taking away, no leakage was found by ten testers, whereby the determination result was “Good”.

Regarding the comparative example 3, during microwaving, the label was in close contact with the steam release port, and steam was released through the lateral seal part. Hence, regarding leakage of the contents caused during taking away, the leakage of the contents from the lateral seal part was found by eight of ten testers, whereby the determination result was “Poor”.

In addition, regarding the comparative example 4, steam was released from the portion cut along the corner cut line 230 present at the corner parts of the first sheet part 211 and the second sheet part 212. Then, regarding leakage of the contents caused during taking away, the leakage of the contents from the corner cutting portion was found by six of ten testers, whereby the determination result was “Poor”.

From the above results, regarding the packaging body in which a standing pouch is supposed to be provided, it was confirmed that using the label in which the outermost layer is configured by a heat-shrinkable film can suppress the contents from leaking during taking away.

[Reference Signs List] 1 Packaging body; 10 Container; 11 Container body; 12 Accommodation space; 13 Flange part; 20 Lid; 30 Lid member; 31 Innermost layer; 32 Intermediate layer; 33 Outermost layer; 34 Steam release port; 35 Tongue segment; 35a Base end part; 40 Label; 40a Base end part; 40b One end part in longitudinal direction; 40c Other end part in longitudinal direction; 41 Innermost layer; 42 Intermediate layer; 43 Outermost layer; 101 Packaging body; 110 sheet; 111 First sheet part (sheet part); 111a Innermost layer; 111b Intermediate layer; 111c Outermost layer; 112 Second sheet part (sheet part); 113 Bottom sheet part (sheet part); 114 Accommodation space; 115 Steam release port; 116 Tongue segment; 116a Base end part; 120 Seal part; 121 Upper side seal part; 122 Lower side seal part; 123 First lateral seal part; 124 Second lateral seal part; 130 Label; 130a Base end part; 130b One end part in longitudinal direction; 130c Other end part in longitudinal direction; 131 Innermost layer; 132 Intermediate layer; 133 Outermost layer; C Contents; CL Cut line; X Steam.

	Number	Date	Country
Parent	PCT/JP2022/035523	Sep 2022	WO
Child	19084401		US

PACKAGING BODY

Information

Publication Number

Date Filed

Date Published

Inventors

Original Assignees

CPC

International Classifications

Abstract

Description

Claims

CROSS-REFERENCE TO RELATED PATENT APPLICATIONS

Continuations (1)