Lid and food storage container using the lid

Abstract

To acquire a highly productive sheet enabling fabricating a lid member adhesible to an opening part of a paper container using a laminated sheet with no metal layer, without causing curls.SOLUTION: A lid body (1) is caused to adhere to an opening part of a cup container and capable of venting steam through a hole appearing during heating. The lid body comprises a multi-layered sheet which comprises, from the outside, at least: a first layer (41) made from polyethylene terephthalate; a second layer (43) made from paper via an adhesive agent on the first layer; a third layer (44) made from polyethylene; a fourth layer (45) made from polyethylene terephthalate; and a fifth layer (47) made of a sealant via the adhesive agent on the fourth layer. In a polyethylene terephthalate film of the first layer, thermal shrinkage in the vertical direction of the film is 0.05% to 0.20%, inclusive, and also a ratio of the second layer with respect to the entire thickness is 50% to 70%, inclusive.SELECTED DRAWING: Figure 3

Description

[Technical Field]

[0001] This invention relates to a lid used for a container that seals food ingredients, heats them in a microwave oven, and drains the water. [Background technology]

[0002] Paper containers for microwave-heated food can be manufactured quickly and inexpensively, and despite being made of paper, they are insulated, easy to handle, and easy to dispose of. In particular, instant foods are placed inside containers, and a cooking method is employed in which water is boiled inside or poured in, and the food is cooked by the high temperature of the water, after which the water inside is drained and removed. The lids of containers used for this purpose have many small holes in the corners for draining the water. These holes are closed during cooking, but after cooking is finished, they have the function of separating the heated water from the contents such as noodles through these holes.

[0003] For example, Patent Document 1 describes a lid that is attached to the opening of a cup container, and in which multiple drainage holes are revealed by partially peeling off the surface layer, A first sheet comprising a polyethylene terephthalate layer, with one side sealed to an opening, A first resin layer laminated on the other side of the first sheet, A second resin layer, which is made of a different material from the first resin layer and is laminated on the first resin layer, The present invention comprises a second sheet laminated on the second resin layer, The first sheet and the second sheet are peelable only at the interface between the first resin layer and the second resin layer. The outermost layer on the first resin layer side of the first sheet is an aluminum layer. The first resin layer is formed of an ethylene-acid copolymer, The outermost layer on the second resin layer side of the second sheet is a paper layer. The proposed lid is formed from polypropylene as the second resin layer.

[0004] The lid of Patent Document 1 described above is fine when cooking by pouring in preheated water, but it cannot be used when heating by dielectric heating such as in a microwave oven after adding water. The lid contains a layer of aluminum metal. Therefore, when attempting to heat it in a microwave oven, the energy concentrates on the lid rather than the contents, causing the lid to heat up to a high temperature first, which can lead to problems such as the plastic layers on the inside and outside igniting. Thus, when metal is present, energy tends to concentrate in the metal rather than the food, making it more likely for problems such as the metal igniting to occur, and thus dielectric heating cannot be performed.

[0005] Patent Document 2 describes a lid material for sealing the upper opening of a container body, which is a laminated material without a metal layer such as aluminum foil, and is a sheet-shaped lid material for an instant food container that is punched out in a predetermined shape and has an opening tab on its outer edge, The proposed lid material is characterized in that the laminate consists of at least a paper layer, a cellophane film layer, and a sealant layer from the outside in.

[0006] The lid material described in Patent Document 2 above can be heated in a microwave oven because it does not have a metal layer. However, when it is attached to a container as a lid, the presence of a cellophane film layer causes curling in the lateral direction of the sheet, which is difficult to correct and prone to tearing at the edges, resulting in extremely low productivity.

[0007] Patent Document 3 proposes a lid for an instant food container with drainage holes, wherein a composite sheet and a surface sheet are laminated and bonded together, and are divided into an easily peelable region formed by an easily peelable layer created by applying an easily peelable agent in a pattern to a predetermined shaped region, and an adhesive region other than the composite sheet, and one or more half-cuts for forming drainage holes are formed in the composite sheet within the easily peelable region, and a separation portion is formed in the boundary region between the easily peelable region and the adhesive region of the surface sheet. The lid for an instant food container with drainage holes is characterized in that a plastic film layer made of stretched film is laminated on the composite sheet, and the separation portion is provided by forming perforations for separation in the boundary region of the surface sheet where the easily peelable layer is formed by applying an easily peelable agent in a solid manner.

[0008] The lid described in Patent Document 3 above had a plastic film layer made of stretched film that was prone to shrinking with heat, making stable bonding difficult and thus prone to problems during sheet production. Furthermore, in the filling process, the lid would curl and become difficult to load into the production machine, resulting in productivity problems. [Prior art documents] [Patent Documents]

[0009] [Patent Document 1] Patent No. 5679510 [Patent Document 2] Japanese Patent Publication No. 2011-201550 [Patent Document 3] Patent No. 4221802 [Overview of the project] [Problems that the invention aims to solve]

[0010] Therefore, the objective of this invention is to create a lid material that can be attached to the opening of a paper container using a laminated sheet without a metal layer, without curling, and to obtain a highly productive sheet. [Means for solving the problem]

[0011] The lid of the present invention is a lid that is adhered to the opening of a cup container and has holes appearing during heating to allow steam venting, and at least comprises a first layer made of polyethylene terephthalate from the outside, a second layer made of paper through an adhesive to the first layer, a third layer made of polyethylene, a fourth layer made of polyethylene terephthalate, a fifth layer made of a sealant through an adhesive to the fourth layer, and is composed of such a multilayer sheet, where the polyethylene terephthalate film of the first layer has a vertical thermal shrinkage rate of 0.05 percent or more and 0.20 percent or less, and weight the weight ratio of the second layer with respect to the whole is 50 percent or more and 70 percent or less, and it is characterized by such a lid.

Advantages of the Invention

[0012] The lid of the present invention can prevent the curling of the sheet by setting the vertical thermal shrinkage rate of the first layer film made of polyethylene terephthalate from the outside to be 0.05 percent or more and 0.20 percent or less, and stipulating that the ratio of the thickness of the second layer is 50 percent or more and 70 percent or less. By using this lid material, the productivity of the sheet is high and stable filling becomes possible.

Brief Description of the Drawings

[0013] [Figure 1] It is a view of an embodiment of a lid using the lid of the present invention, seen from its front and back surfaces. [Figure 2] It is an embodiment of a container with a lid using the lid of the present invention fused, showing a longitudinal sectional view of its state during filling and its partial enlarged view, and a longitudinal sectional view of the state where the steam vent hole part is opened and its partial enlarged view. [Figure 3]In an embodiment of the lid of the present invention, the image shows a partially enlarged cross-sectional view showing the configuration near the drainage hole of the lid, and a partially enlarged cross-sectional view showing the lid with the drainage hole open. [Figure 4] This is a longitudinal cross-sectional view showing one example of an embodiment of a container with a fused lid according to the present invention, illustrating the process before cooking and during heating, when the water inside the container boils and the steam inside the container opens the drain lid to release the steam. [Figure 5] This is an example of an embodiment of a container with a fused lid according to the present invention, showing a plan view illustrating the process of removing the peeling portion covering the drain hole after cooking, and a longitudinal cross-sectional view illustrating the process of draining the hot water inside the container through the drain hole. [Modes for carrying out the invention]

[0014] The lid of the present invention will be described in detail below with reference to the figures. Figure 1 shows an example of an embodiment of the lid of the present invention, viewed from its front and back surfaces. The lid of this invention is used for cooked food in a container that is heated by induction heating immediately before consumption. The hot water is then drained from the container so that the cooked food remains inside. After that, the lid is peeled off and the container is fully opened before consumption. Figure 1-1 is a view of the lid from the front side, and Figure 1-2 is a view of the lid 1 from the back side. The lid 1 has a substantially circular outer shape that conforms to the circular (or polygonal, such as a rectangle) opening edge of the container. The lid 1 consists of an easily peelable region 2 that covers the drainage hole and a closed region 3 that does not peel off during cooking.

[0015] The easily peelable region 2 has an easily peelable layer 48 between the layers of the laminated sheets that make up the lid 1. Within the easily peelable region 2, an adhesive portion 23 without the easily peelable layer 48 is provided, and in the area surrounding the adhesive portion 23 within the easily peelable region with the easily peelable layer 48, a drainage hole 22 is formed by a drainage hole half-cut line 221, with a depth from the back side to the easily peelable layer 48.

[0016] Furthermore, the surface layer of the easily peelable region 2 is formed by providing an easily peelable region outline half-cut line 21 along the outer periphery of the easily peelable region 2, extending from the surface to the easily peelable layer.

[0017] Furthermore, outside the easily peelable region 2, a pull tab 24 is provided attached to the surface layer 11 that peels off when the drainage hole 22 is opened. The pull tab 24 is shaped to protrude outward from the outer shape of the fused portion of the container to which the lid 1 is fused, and a pull tab half-cut line 241 is provided at the base of the pull tab 24 to a depth from the back side to the easily peelable layer 48. Looking at the back side of Figure 1-2, you can see the drain hole half-cut line 221 and the pull tab half-cut line 241.

[0018] In addition, the outer shape of the lid 1 is provided with a gripping portion 13 for grasping the entire lid 1 when peeling it off the container, positioned sufficiently far from the easy-peel area 2 and protruding outward from the outer shape of the container. The gripping portion 13 does not have a half-cut around its periphery.

[0019] Figure 2 shows an example of an embodiment of a container 5 to which the lid 1 of the present invention has been fused. Figure 2-1 is a vertical cross-sectional view showing the state during filling, with a partially enlarged view of the vicinity of the easily peelable region 2 where the drainage holes 22 are formed. As shown in the magnified view, the drain hole half-cut line 221 surrounds the adhesive portion 23 within the easily peelable region where the easily peelable layer 48 is absent, and cuts from the inside of the container up to the easily peelable layer 48. Furthermore, the outer half-cut line 21 of the easily peelable area cuts from the surface side to the easily peelable layer 48, and the pull tab half-cut line 241 also cuts from the inside to the easily peelable layer 48. From this, it can be seen that the easily detachable region 2 can be easily removed.

[0020] Figure 2-2 is a vertical cross-sectional view showing the state with the drain hole 22 opened, and a magnified view of that section. The easily detachable region 2 has detached and separated from the lid 1. At this time, in the adhesive portion 23 within the easily peelable area, the inner layer 2 remains adhered to the outer layer without peeling, and the drain hole 22 portion is peeled off together with the pull tab 24, so that the drain hole 22 can be opened.

[0021] Figure 3-1 is a partially enlarged cross-sectional view showing the configuration near the drain hole 22 of the lid. The lid material 10 that constitutes the lid consists of a first layer 41 made of polyethylene terephthalate from the outside, A first adhesive layer 42 is interposed between the first layer 41 and the second layer 43 made of paper, A third layer 44 made of polyethylene, The fourth layer 45 is made of polyethylene terephthalate, The fourth layer 45 is connected to the fifth layer 47, which consists of a sealant, via the second adhesive 46. It consists of a multilayer sheet, and in the easily peelable region 2, an easily peelable layer 48 is coated in a pattern between the third layer 44 and the fourth layer 45.

[0022] Figure 3-2 is a partially enlarged cross-sectional view showing the lid with the drainage holes opened. In the easily peelable region 2, an easily peelable layer 48 is applied in a pattern between the third layer 44 and the fourth layer 45. When the pull tab is pulled up, the surface layers 11 from the first layer 41 to the third layer 44, which are outside the easily peelable layer 48, peel off from the lower layers 12 from the fourth layer 45 to the fifth layer 47. At this time, near the adhesive portion 23 within the easily peelable region where the easily peelable layer 48 is absent, a drainage hole 22 is formed by the drainage hole half-cut line 221 surrounding the adhesive portion 23 within the easily peelable region, resulting in a container that can drain excess water while preventing the food inside from spilling out.

[0023] Figure 4 shows an example of an embodiment of a container with a fused lid according to the present invention, and Figure 4-1 is a longitudinal cross-sectional view showing the state before heating. In this embodiment, the container 5 contains the food to be cooked 6 and water, soup, etc. 61. Here, the water, soup, etc. 61 inside the container is packaged in a breakable packaging bag 62 that breaks open when heated in a microwave oven. Instead of water, soup, etc. 61, it is also acceptable to use high-hydration foods that contain a lot of water, such as frozen foods.

[0024] Figure 4-2 is a longitudinal cross-sectional view showing the process of heating a container 5, which has a lid 1 fused to it, with food 6 and water / soup 61 inside, in a microwave oven, causing the water inside the container to boil and the steam inside the container to open one end of the drain lid and release the steam. When the water inside container 5 boils and the steam 63 increases the air pressure inside container 5, the lid 1 bulges up, and the peeling portion 20 near the drain hole 22, which is the easiest to peel off, lifts up and peels off, releasing the steam 63 inside the container to the outside of container 5, and cooking is performed while maintaining a constant air pressure inside container 5.

[0025] Figure 5 is a longitudinal cross-sectional view showing an example of an embodiment of a container 5 to which the lid 1 of the present invention is fused, illustrating the process of draining the hot water from inside the container through a drain hole after cooking. Figure 5-1 shows the process of peeling off the peeling section 20 to expose the drainage holes 22. Simply by pulling up the pull tab 24 and peeling off the partially peeled portion 20, the lower layer that was blocking the drain hole 22 can be removed while still adhered to the peeled portion 20, and the drain hole 22 will be exposed.

[0026] Figure 5-2 shows the process of tilting the container 5, which has a drain hole 22, to drain the hot water from inside the container. The size of the drainage holes 22 is set to an appropriate shape and size depending on the size and shape of the food being heated, so that excess water, oil, and boiling water are drained out. After this, you can simply grasp the handle 13 to peel the lid 1 from the container 5, add seasonings and other ingredients, and mix, and the dish can be eaten immediately.

[0027] <Prototype Example> The following prototype lids were created and their feasibility for production was examined.

[0028] <Materials used in the prototype example> The lid material that forms the lid is the configuration without the release layer shown in Figure 3. From the outside, as the first layer, various polyethylene terephthalate films, 12 μm thick. The second layer is glued, The third layer has a basis weight of 65, 79.1, 127.9, 180, and 230 g / m². 2 Five types of paper, The fourth layer was made of 20 μm low-density polyethylene, which was extruded as a sandwich polyethylene using a T-die during exturamination and then bonded together. The fifth layer is a 12μm polyethylene terephthalate film. The sixth layer was an adhesive, and the seventh layer was a 30 μm thick sealant film. Of these, the first and third layers use different materials, while the other layers have the same composition.

[0029] Here, for the first layer of polyethylene terephthalate film (12 μm), the thermal shrinkage rate was measured separately in the flow direction (MD direction) and the perpendicular direction (TD direction).

[0030] Furthermore, the basis weight of the third layer of paper was measured, and the weight ratio of the paper used in the lid material to the total weight of the lid material was determined as the paper content ratio and confirmed as a percentage.

[0031] <Prototype Example 1> As the outermost layer, the first layer, a 12 μm polyethylene terephthalate film with a thermal shrinkage rate of 0.38% in the flow direction (MD direction) and 0.1% in the vertical direction (TD direction) is used. The third layer has a basis weight of 65 g / m². 2 I used this paper.

[0032] <Prototype Example 2> The outermost layer, the first layer, uses the same film as in prototype example 1, and the third layer has a basis weight of 79.1 g / m². 2 The paper used was [paper name].

[0033] <Prototype Example 3> The outermost layer, the first layer, uses the same film as in prototype example 1, and the third layer has a basis weight of 127.9 g / m². 2The paper was used.

[0034] <Prototype Example 4> For the first layer which is the outermost layer, the same film as in Prototype Example 1 was used, and for the third layer, paper with a basis weight of 180 g / m 2 was used.

[0035] <Prototype Example 5> For the first layer which is the outermost layer, the same film as in Prototype Example 1 was used, and for the third layer, paper with a basis weight of 127.9 g / m 2 was used.

[0036] <Prototype Example 6> As the first layer which is the outermost layer, a 12-μm polyethylene terephthalate film with a heat shrinkage rate of 0.61% in the flow direction (MD direction) and 0.1% in the perpendicular direction (TD direction) was used, and for the third layer, paper with a basis weight of 65 g / m 2 was used.

[0037] <Prototype Example 7> For the first layer which is the outermost layer, the same film as in Prototype Example 6 was used, and for the third layer, paper with a basis weight of 79.1 g / m 2 was used.

[0038] <Prototype Example 8> For the first layer which is the outermost layer, the same film as in Prototype Example 6 was used, and for the third layer, paper with a basis weight of 127.9 g / m 2 was used.

[0039] <Prototype Example 9> For the first layer which is the outermost layer, the same film as in Prototype Example 6 was used, and for the third layer, paper with a basis weight of 180 g / m 2 was used.

[0040] <Prototype Example 10> For the first layer which is the outermost layer, the same film as in Prototype Example 6 was used, and for the third layer, paper with a basis weight of 127.9 g / m 2 was used.

[0041] <Prototype Example 11> As the outermost layer, the first layer, a 12 μm polyethylene terephthalate film with a thermal shrinkage rate of 0.48% in the flow direction (MD direction) and 0.2% in the vertical direction (TD direction) is used. The third layer has a basis weight of 65 g / m². 2 The paper used was [paper name].

[0042] <Prototype Example 12> The outermost layer, the first layer, uses the same film as in prototype example 11, and the third layer has a basis weight of 79.1 g / m². 2 The paper used was [paper name].

[0043] <Prototype Example 13> The outermost layer, the first layer, uses the same film as in prototype example 11, and the third layer has a basis weight of 127.9 g / m². 2 The paper used was [paper name].

[0044] <Prototype Example 14> The outermost layer, the first layer, uses the same film as in prototype example 11, and the third layer has a basis weight of 180 g / m². 2 The paper used was [paper name].

[0045] <Prototype Example 15> The outermost layer, the first layer, uses the same film as in prototype example 11, and the third layer has a basis weight of 127.9 g / m². 2 The paper used was [paper name].

[0046] <Prototype Example 16> As the outermost layer, the first layer, a 12 μm polyethylene terephthalate film with a thermal shrinkage rate of 0.47% in the flow direction (MD direction) and 0.24% in the vertical direction (TD direction) is used. The third layer has a basis weight of 65 g / m². 2 The paper used was [paper name].

[0047] <Prototype Example 17> The outermost layer, the first layer, uses the same film as in prototype example 16, and the third layer has a basis weight of 79.1 g / m². 2 The paper used was [paper name].

[0048] <Prototype Example 18> The outermost layer, the first layer, uses the same film as in prototype example 16, and the third layer has a basis weight of 127.9 g / m².2 The paper used was [paper name].

[0049] <Prototype Example 19> The outermost layer, the first layer, uses the same film as in prototype example 16, and the third layer has a basis weight of 180 g / m². 2 The paper used was [paper name].

[0050] <Prototype Example 20> The outermost layer, the first layer, uses the same film as in prototype example 16, and the third layer has a basis weight of 127.9 g / m². 2 The paper used was [paper name].

[0051] <Evaluation Method> <Curl Measurement Method> Ten lid pieces for each prototype were pressed into shape using a press die to create an outer diameter of φ163 as shown in Figure 1, and these were used to form the lids. For curl measurement, the lid was placed on a surface plate, and the highest point of the curvature was measured with a height gauge. Here, a curl towards the back side was considered positive, and a curl towards the front side was considered negative. When the curl was on the positive side, the measurement was taken with the front side facing downwards.

[0052] <Method for evaluating the appearance of seals> A lid was placed on a cup container with a diameter of φ158 mm, and five lids were sealed at a time using an up-and-down type heat sealing machine. The sealing conditions were 180°C and 2 kg / cm². 2 The fusion time was then extended by 0.5 seconds increments until it was 1 second longer than the time it took for the fusion to begin. After sealing, the fused lid was visually inspected to check for any deformation, ensure the sealant was uniformly fused, and verify that no foaming or other issues had occurred near the seal.

[0053] <Evaluation Results> <Curl measurement results> If the lid curls (minus) outwards, the edges of the lid become rounded, causing sealant to adhere to the seal bar and preventing the entire lid from being pressed evenly against the cup container. Therefore, this design was deemed unacceptable. Similarly, if the curl on the back side is less than 1mm, it is likely to be considered defective, so it was given a △ rating. As a result, if the thermal shrinkage rate of the first layer polyethylene terephthalate film exceeded 0.2% in the vertical direction (TD direction), it resulted in negative curling and was evaluated as unacceptable. Furthermore, even with a lid where the thermal shrinkage rate of the first layer polyethylene terephthalate film was 0.2% in the vertical direction (TD direction) and the paper-based composition rate was 45%, the curling was negative, resulting in a rejection. Even if a method of pre-correcting the curl using a de-curler is employed, the curl-correcting effect will be small and minimal in a lid with a low paper content. Furthermore, even with a high paper content, if the thermal shrinkage rate of the first layer polyethylene terephthalate film is 0.2% in the vertical direction (TD direction), the curl is +1mm, which is just barely enough to ensure stable production.

[0054] <Seal appearance measurement results> The container was sealed with a lid, and the only visible abnormality was foaming. Foamed lids were found in lids with a paper content of 74%. This is thought to be because, with a high paper content, the paper is thicker, absorbing more moisture, and also has high heat insulation properties. As a result, it takes longer for heat to conduct to the sealant surface, and consequently, the high temperature persists for a longer period. This causes the absorbed moisture to boil, resulting in foaming and a bubbling effect.

[0055] The results are shown in the table. From the table, it is necessary to manufacture the lid under the following conditions. In other words, the thermal shrinkage rate of the first layer polyethylene terephthalate film shall be less than 0.2% in the vertical direction (TD direction). However, if the polyethylene terephthalate film of the first layer 41 has a vertical thermal shrinkage rate of less than 0.05 percent, sufficient curl suppression effect on the opposite side cannot be obtained. Therefore, the polyethylene terephthalate film for the first layer 41 is to be a film with a vertical thermal shrinkage rate of 0.05 percent or more and 0.20 percent or less. Based on the evaluation results, the paper conversion rate will be set in the range of 50 percent to 70 percent.

[0056] [Table 1]

[0057] As described above, the lid of the present invention has a vertical thermal shrinkage rate of 0.20 percent or less for the first layer of polyethylene terephthalate film. Furthermore, the ratio of the second layer to the total thickness is 50 percent or more and 70 percent or less. This allows for stable production and the creation of lids with high suitability for filling machines. Because these lids lack a metal layer, they do not ignite or burn when heated in a microwave oven. This means that even frozen foods requiring drainage holes can be heated and cooked immediately without the need to add boiling water separately, offering significant advantages to this invention. [Explanation of Symbols]

[0058] 1········Lid 11... Surface layer 12...Lower layer 13·······Grip part 2...Easy peel area 20········Peeling section 21·······Easily peelable area half-cut line 22·······Drainage holes 221······Drain hole half-cut line 23. Adhesive area within the easily peelable region 24.. Pull tab 241······Pull tab half-cut line 3......Closed area 41·······First layer (polyethylene terephthalate) 42·······First Adhesive 43... Second layer (paper) 44·······Third layer (polyethylene) 45·······Fourth layer (polyethylene terephthalate) 46...Second adhesive layer 47.....Fifth layer (sealant) 48·······Easily peelable layer 5. Container (cup container) 51·······Opening 6... Food for cooking 61·······Water, soup, etc. 62·······Breakable packaging bags 63......Water vapor, etc.

Claims

1. A lid that is attached to the opening of a cup container and has an easily peelable region in which holes appear when heated, allowing steam to escape, It consists of at least a multilayer sheet comprising, from the outside, a first layer made of polyethylene terephthalate, a second layer made of paper with an adhesive in between the first layer, a third layer made of polyethylene, a fourth layer made of polyethylene terephthalate, and a fifth layer made of sealant with an adhesive in between the fourth layer. A lid characterized in that the first layer of polyethylene terephthalate film has a thermal shrinkage rate in the vertical direction of the film of 0.05 percent or more and 0.20 percent or less, and the weight ratio of the second layer to the total weight is 50 percent or more and 70 percent or less.

2. A lid in which drainage holes are revealed by partially peeling off the surface layer of the cup container lid, Near the easily peelable region near the drainage hole, an easily peelable layer is provided between the third and fourth layers. An adhesive portion within the easily peelable region is provided, which does not have an easily peelable layer. The lid according to claim 1, characterized in that it has a drain hole die-cut portion provided in the easily peelable region around the adhesive portion within the easily peelable region, to a depth from the back side to the easily peelable layer.

3. The lid according to claim 2, characterized in that the easily peelable region is formed by providing a cut along the outer periphery of the easily peelable region, with a depth from the front side to the easily peelable layer.

4. The lid according to claim 2 or 3, characterized in that, at the outer periphery of the container fused portion near the drain hole, a pull tab is formed at its base with a slit extending from the back side to the easily peelable layer, for gripping when removing the surface layer of the easily peelable region from the lid during opening.

5. In a cup container having a lid attached to the opening that has an easily peelable region where holes appear when heated, allowing steam to escape, Having the lid according to claim 1 or 2, A food storage container for cooking, characterized in that it contains water or cooking soup inside a cup container, and has a packaging bag inside that has a fragile part that can be broken when heated by dielectric heating.

6. In a cup container having a lid attached to the opening that has an easily peelable region where holes appear when heated, allowing steam to escape, Having the lid according to claim 1 or 2, A food storage container for prepared foods, characterized by storing high-hydration foods inside the cup container and preserving them by freezing.

Images