Lids with bags and containers with bags

Abstract

We provide a lid with a bag that, with its simple design, effectively deters tampering and prevents damage during microwave heating. [Solution] The lid with a bag 2 comprises a lid 20 having a through hole 21 and a small bag portion 30 attached to the lid to close the through hole. The small bag portion has a small bag 31 in which an article is sealed inside, a base sheet 32 ​​joined to the small bag, a first adhesive layer 33 provided between the small bag and the base sheet, and a second adhesive layer 34 provided between the small bag and the lid. The bonding strength between the small bag and the base sheet is greater than the bonding strength between the small bag and the lid.

Description

Technical Field

[0001] The present invention relates to a lid with a pouch attached thereto. The present invention also refers to a container with a lid provided with such a pouch.

Background Art

[0002] Conventionally, it has been known to heat food that is distributed in a container that transmits electromagnetic waves in a microwave oven to warm it or perform finishing cooking. In order to prevent breakage such as rupture during the use of a microwave oven, such containers often have small holes for discharging water vapor generated when heated. However, in order to prevent mischief from the small holes during the distribution and sales stages, a sealing material is attached so as to cover the small holes.

[0003] Patent Document 1 also proposes a heat-cooking container that can be heated in a microwave oven, which can reliably degas the inside of the container and obtain a stable steaming effect after degassing. In this heat-cooking container, a through-hole provided in the lid portion is blocked with an adhesive label as a sealing material. When cooking the contents in a microwave oven, the bending rigidity of the sealing material, the thickness of the adhesive layer, the size of the through-hole, the sticking position of the sealing material, etc. are devised so that the cooking state of the contents becomes a preferable state.

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0005] Consumer preferences have diversified in recent years, and it has become common to add seasonings to cooked food to achieve a desired taste. Consequently, small packets containing seasonings are increasingly being attached to containers. In this case, it is necessary to attach the packets to a location other than the sealing material, avoiding the sealing material. This requires determining the optimal attachment location for the packets according to the shape of the container, which increases the workload whether the attachment is done manually or automatically. Furthermore, using special sealing materials increases the cost of the lid, and consequently the entire container.

[0006] Based on the above circumstances, the present invention aims to provide a lid with a bag that can achieve both the prevention of tampering and the prevention of damage during microwave heating with a simple configuration. [Means for solving the problem]

[0007] A first aspect of the present invention is a lid with a bag, comprising a lid having a through hole and a small bag portion attached to the lid to seal the through hole. The pouch portion comprises a pouch containing an article, a base sheet joined to the pouch, a first adhesive layer provided between the pouch and the base sheet, and a second adhesive layer provided between the pouch and the lid. The bonding strength between the small bag and the base sheet is greater than the bonding strength between the small bag and the lid.

[0008] A second aspect of the present invention is a bagged container comprising a bagged lid according to the first aspect and a main body having an opening and capable of containing food inside, wherein the bagged lid is attached to the main body so as to cover the opening. [Effects of the Invention]

[0009] According to the present invention, a lid with a bag can be provided that achieves both the prevention of tampering and the prevention of damage during microwave heating with a simple configuration. [Brief explanation of the drawing]

[0010] [Figure 1] This is a schematic cross-sectional view showing a bagged container according to one embodiment of the present invention. [Figure 2] This diagram shows one step in the process of using the bagged container. [Figure 3] This is a schematic cross-sectional view showing a small pouch portion according to a modified example of the present invention. [Modes for carrying out the invention]

[0011] One embodiment of the present invention will be described with reference to Figures 1 and 2. Figure 1 is a schematic cross-sectional view showing a bagged container 1 according to this embodiment. The bagged container 1 comprises a main body 10 in which food Fd is contained, and a bagged lid 2 attached to the main body 10. The bagged lid 2 has a lid 20 and a small bag portion 30 attached to the lid 20.

[0012] The main body 10 has an opening Op at the top and an internal space capable of accommodating food Fd. The material of the main body 10 is not particularly limited as long as it is transparent to electromagnetic waves, and examples include plastic and paper. The main body 10 of this embodiment has a flange 11 around the opening Op that can engage with the lid 20.

[0013] The lid 2 with a bag according to this embodiment can be attached to the main body 10 by engaging it with the flange 11. While it is preferable for the lid 20 to be transparent to make the Fd contained in the main body 10 easily visible, this is not essential. The material of the lid 20 is also not particularly limited as long as it transmits electromagnetic waves. Considering the need for transparency, plastic is preferred for the lid 20, but this is not essential, and paper such as coated paper may be used. A through-hole 21 is formed in the lid 20. In Figure 1, the through-hole is located in the center of the lid, but this is not mandatory and can be placed at any desired location while considering other markings, etc., to be provided on the bagged container 1. There are no particular restrictions on the form of the through-hole 21, and it can be determined as appropriate, such as its shape in plan view or by arranging multiple small holes in a row. With the above configuration, when the lid 20 is attached to the main body, it can generally cover the opening Op of the main body, except for the area where the through hole 21 is provided.

[0014] The small bag section 30 comprises a small bag 31 and a base material sheet 32 ​​joined to the small bag 31. The pouch 31 in this embodiment is made of plastic and contains liquid seasoning Sn inside. The base sheet 32 ​​in this embodiment is a plastic sheet and has a size that can cover the entire through hole 21 formed in the lid 20. Examples of plastics that can form the base sheet 32 ​​include polyethylene terephthalate (PET) and polypropylene (PP), and a film made of biodegradable plastic can also be used. The base sheet 32 ​​may also be formed from a non-plastic material such as water-resistant paper, PP synthetic paper, or various types of paper without a coating layer.

[0015] The base sheet 32 ​​is joined to the small bag 31 by a first adhesive layer 33 located on the first surface 32a. Furthermore, it is joined to the lid 20 by a second adhesive layer 34 located on the second surface 32b opposite to the first surface 32a, so as to cover the through hole 21. Therefore, the lid 20 to which the small bag portion 30 is attached can cover the entire opening Op of the main body 10, thereby sealing the container 1 with the bag.

[0016] The bond formed by the first adhesive layer 33 is stronger than the bond formed by the second adhesive layer 34. As a result, the small bag 31 and the base sheet 32 ​​are firmly bonded, while the small bag portion 30 can be peeled off the lid 20 relatively easily. Examples of materials for the first adhesive layer 33 and the second adhesive layer 34 that achieve this configuration include acrylic adhesives, silicone adhesives, urethane adhesives, and rubber adhesives, respectively. Furthermore, an example of a suitable bonding strength (force required for peeling) for each adhesive layer, while maintaining the above-mentioned relative strengths, is approximately 0.1N / 25mm to 30N / 25mm for the first adhesive layer 33 and approximately 0.02N / 25mm to 15N / 25mm for the second adhesive layer 34.

[0017] Although not essential to the present invention, in the container 1 with a bag according to the present embodiment, the portion where the main body 10 and the lid 20 are engaged at the peripheral edge in plan view is covered with a shrink film 40. This prevents the lid 20 from accidentally coming off the main body 10 during the distribution process or the like.

[0018] The operation during the use of the container 1 with a bag and the lid 2 with a bag according to the present embodiment configured as described above will be described. A purchaser of the container 1 with a bag, or a user such as a store clerk who has been requested by the purchaser to warm it up or the like, removes the small bag portion 30 from the lid 20 as shown in FIG. 2. At this time, since the bonding by the first adhesive layer 33 is stronger than the bonding by the second adhesive layer 34, only the small bag 31 does not come off the lid 20, and the base material sheet 32 is surely separated from the lid 20, and as a result, the through hole 21 is exposed. From the viewpoint of surely separating the base material sheet 32 from the lid 20, it is preferable that the bonding strength of the first adhesive layer 33 is 1.5 times or more the bonding strength of the second adhesive layer 34.

[0019] The user puts the lid 20 and the main body 10 with the through hole 21 exposed into a microwave oven and heats them. As the heating progresses, the temperature of the food Fd in the main body 10 rises and water vapor is generated. However, the generated water vapor is appropriately discharged outside the main body 10 through the through hole 21, so that damage such as rupture or deformation due to an increase in internal pressure is preferably suppressed.

[0020] When the heating is finished, the user takes out the lid 20 and the main body 10 from the microwave oven, opens the lid 20, and eats the food Fd while using the seasoning Sn enclosed in the small bag 31 if necessary. The shrink film 40 may be removed at an appropriate timing such as before putting it into the microwave oven or after taking it out.

[0021] As described above, the lid 2 with a bag according to the present embodiment has a simple structure that temporarily closes the through hole 21 provided in the lid 20 by the small bag portion 30, so that damage during heating using a microwave oven can be suppressed without providing a sealing material or the like having a complicated structure on the lid. Furthermore, since the through-hole 21 is covered by the small bag portion 30, it is difficult to tamper with the product through the through-hole 21, resulting in a simple configuration that simultaneously suppresses tampering and prevents damage during microwave heating.

[0022] Furthermore, since the small pouch portion 30 completely covers the through hole 21, the sealed state of the bag-attached container 1 can be ensured without covering the entire body 10 and lid with film. This sealed state can then be suitably maintained simply by placing the shrink film 40 around the periphery in plan view to cover the engagement portion between the body 10 and the lid 20. Therefore, a suitable packaging state can be established with less plastic usage.

[0023] In addition, if the base sheet 32 ​​of the small bag portion 30 is made of the above-mentioned material and is impermeable to moisture and oil, there is an advantage in that even if moisture, oil, etc. contained in the food Fd reaches the small bag portion 30 through the through hole 21, adverse effects on the small bag 31 and the seasoning Sn inside can be prevented.

[0024] Furthermore, compared to cases where a sealing material or special valve is placed in the steam vent area, it is simply a matter of placing the small bag portion 30 to cover the through-hole, thus offering greater flexibility in setting the position of the through-hole in the lid and the corresponding position for attaching the small bag portion. Therefore, the lid with a bag 2 according to this embodiment can be applied to a wide variety of container shapes and is highly versatile.

[0025] Although one embodiment of the present invention has been described above, the technical scope of the present invention is not limited to the above embodiment, and it is possible to change the combination of components, make various changes to each component, or delete them, without departing from the spirit of the present invention.

[0026] For example, the small pouch portion of the lid with a bag according to the present invention is not limited to one containing seasonings, as shown in the embodiment. Such modifications are shown below. Figure 3 is a schematic cross-sectional view showing a modified pouch portion 30A. Disposable chopsticks Cs are contained inside the pouch 31. In this way, instead of seasonings, the pouch 31 may contain various cutlery, including disposable chopsticks Cs for eating the contained food, or a wet wipe for use before eating.

[0027] In the small bag portion 30A, a part of the base sheet 32 ​​extends outside the range of the small bag 31, and the portion outside the range is visible in a plan view of the container with the bag. On the portion of the second surface 32b of the base sheet 32 ​​that extends outside the range of the small bag 31, an adhesive-killing layer 35 is formed in a predetermined pattern, and the bond between the second adhesive layer 34 and the base sheet 32 ​​is partially weakened. When the small pouch 30A with this configuration is peeled off the lid, the second adhesive layer 34 located below the adhesive-killing layer 35 does not follow the base sheet 32. As a result, the second adhesive layer 34 remains on the lid 20 in a predetermined pattern. The second adhesive layer 34 remaining in a predetermined pattern is easily visible in a plan view of the container with the pouch even when the small pouch 30A is reattached to the lid. This allows store clerks and customers to easily recognize that the small pouch 30A has already been peeled off once, and to identify any individual that may have been tampered with. This effect can be further enhanced by making the pattern of the adhesive-killing layer 35 a string of characters such as "opened," and the remaining second adhesive layer 34 can be made even more visible by increasing the transparency of the base sheet 32. It goes without saying that this type of base sheet configuration can also be applied to the embodiments described above. [Explanation of symbols]

[0028] 1 container with bag 2 bags with lids 10 Main unit 20 Lid 21 Through hole 30, 30A small bag part 31 sachet 32 Base sheet 32a Front page 32b Second side 33 First adhesive layer 34 Second Continuing Layer Fd food Op opening Sn seasoning

Claims

1. A lid having a through hole, A small pouch portion attached to the lid to seal the through hole, Equipped with, The aforementioned small pouch portion is A small bag containing items sealed inside, The base sheet joined to the aforementioned small bag, A first adhesive layer is provided between the small bag and the base sheet, A second adhesive layer is provided between the small bag and the lid, The bonding strength between the small bag and the base material sheet is greater than the bonding strength between the small bag and the lid. Lid with a bag.

2. The aforementioned item is one of the following: seasoning, cutlery, or hand towel. The lid with a bag according to claim 1.

3. The base sheet is one of the following: a plastic sheet, water-resistant paper, synthetic paper, biodegradable film, or paper. The lid with a bag according to claim 1.

4. The base sheet has portions that do not overlap with the small bag in a plan view. In the aforementioned portion, there is an adhesive-killing layer formed in a predetermined pattern between the base sheet and the second adhesive layer. The lid with a bag according to claim 1.

5. A lid with a bag according to any one of claims 1 to 4, A main body having an opening and capable of containing food inside, Equipped with, The lid with the bag is attached to the main body so as to cover the opening. Container with a bag.

Images