JP2000255648A - Container for microwave oven - Google Patents

Abstract

PROBLEM TO BE SOLVED: To appropriately discharge the steam generated in heat cooking from a container by providing a plurality of small holes in a lid of a container in which a frozen food is stored, attaching a label to cover them, and applying a masking agent to a part of an adhesive layer of the label so that the small holes are not completely sealed. SOLUTION: A plurality of small holes 3 are provided in a lid 2 to seal a container body 1, and a label 4 is attached thereto to cover them. An adhesive layer is provided on a back side of a base material of the label 4, and a masking agent is applied thereto. The masking agent is applied in a plurality of straight lines, curved lines or in a lattice so that a part thereof reaches an edge portion of the label 4, and the label 4 is attached to the lid 2 so that at least a part of a masking agent applied portion is lapped on the small holes 3. When the cooking is achieved, and the steam pressure in the container 1 is increased, the steam leaking from the small holes 3 is discharged from the edge portion of the label 4 through the masking agent applied portion weak in adhesion.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a technology of a container for a microwave oven capable of discharging generated steam from a container when heating and cooking frozen foods, chilled foods and the like stored in the container.

[0002]

2. Description of the Related Art When a frozen food or a chilled food stored in a sealed container is heated by a microwave oven, the vapor pressure in the container increases, and the container may be broken, hot air may be blown out, or the heated contents may be scattered. It is a danger. In order to solve this problem, a method has been devised in which a part of the container is cut before heating to promote the discharge of steam, or a method in which a part of the container is opened when the vapor pressure increases to eject steam. .

[0003]

As described above, in the case of a container in which a specific portion needs to be cut before cooking, there is a possibility that a cautionary note may be overlooked, heating may occur, or an accident may occur due to erroneous operation. In addition, when the vapor pressure in the container is increased, a special mechanism is required to open a part of the container to eject the steam, so that the cost is increased and fine adjustment of the ejection is not easy. An object of the present invention is to solve such a conventional problem.

[0004]

In the microwave oven container according to the present invention, a plurality of small holes are provided in a lid of a container storing frozen foods, chilled foods and the like, and a label is attached so as to cover the small holes. A masking agent is applied to a part of the adhesive layer of the label so as to reach the periphery of the label from the small hole so that the small hole is not completely sealed.

[0005] The steam generated when the above-structured container is heated by a microwave oven is gradually discharged through the small holes and the masking agent applied portion. That is, it is possible to heat and cook in a microwave as it is without opening the container storing the frozen food or the chilled food.

[0006]

Embodiments of the present invention will be described with reference to the drawings. As shown in FIGS. 1 (a) and 1 (b), a plurality of small holes 3 are provided in a lid 2 for sealing a container body 1, and a label 4 is attached so as to cover the small holes. As the cover 2, a material obtained by laminating a heat-fusible resin on a plastic film, synthetic paper, or the like is used.

FIG. 2A shows an embodiment of the small hole 3 in which a large number of linear cuts (slits) are provided. (B) shows another embodiment. That is, the small hole 3 is formed of a straight line, a curve, or a circle, and may be a cross, a small circle, a polygon, or a star.

FIG. 3A shows the structure of the label 4.
An adhesive layer 5 is provided on the back side of the base material 6 (the surface in contact with the lid 2).
And a masking agent is applied thereon. As the base material 6 of the label 4, a film such as polyester or polypropylene, synthetic paper, paper, or the like is used, and the surface of the base material 6 is printed 8. The masking agent is non-adhesive and is stably applied on the adhesive layer. For example, varnish, silicone, paint, printing ink, and other resins are used.

As shown in FIG. 3B, the masking agent is applied in the form of a plurality of straight lines, curves or lattices so that a part thereof reaches the edge of the label 4. Thereby, the adhesive strength of the adhesive layer 5 can be adjusted.

The label 4 is attached to the lid 2 such that at least a part of the masking agent application section 7 overlaps the small hole 3. Therefore, a large number of cuts are provided as the small holes 3 as shown in FIG. 2A, and the masking agent applied in a lattice shape is preferable because the small holes 3 and the masking agent application portion 7 are surely overlapped.

The label 4 thus formed is normally flat and almost in close contact with the lid 2, but when the vapor pressure in the container 1 increases, the vapor leaking from the small holes 3 causes the masking agent coating portion having a weak adhesive force to be applied. The label 7 is discharged from the edge of the label 4.
At this time, the amount of the masking agent applied is adjusted so that the space through which the steam passes and the discharge of the steam is promoted.

The form of the label 4 is arbitrary, such as a corner, a circle, and an ellipse, but is a size that covers at least all the small holes 3 of the lid 2.

There is a case where an adhesive is not applied to one end of the back surface of the label 4 or a masking agent is applied on the adhesive to provide a knob 9 as a non-adhesive portion. By peeling off the label 4, the vapor can be easily discharged. Further, when the label 4 and the lid 2 are made of different materials, it is easy to separate the label 4 and separate and discard it.

[0014]

When cooking frozen foods, chilled foods and the like stored in the container of the present invention, the container can be processed as it is in a microwave oven without any special pretreatment, so that the handling is simple. It is easy and economical to manufacture.

[Brief description of the drawings]

FIG. 1 (a) Part of a cross-sectional view of the lid of the container (b) Perspective view showing a state where the label is attached to the lid

FIG. 2 (a) An example of a lid provided with the small holes (b) Examples of embodiments of other small holes

FIG. 3 (a) Part of a cross-sectional view of the label (b) A diagram showing an example of an application mode of a masking agent on the label

[Explanation of symbols]

 1. Container 2. Lid 3. Small holes 4. Label 5. Adhesive layer 6. Base material 7. Masking agent application section 8. Printing 9. Picking

Claims (1)

[Claims] A label (4) for covering a small hole (3) on a lid (2) of a container body (1) provided with a plurality of small holes (3).
The label (4) has an adhesive layer (5) on the back side of the substrate (6), and a part of the adhesive layer (5) reaches the periphery of the label from the small hole (3). Characterized in that the masking agent (7) is applied as described above.