JP2014009002A - Heating container - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a heating container with excellent operability without the necessity of opening an opening of a container body before heating.SOLUTION: A heating container 1 includes a container body 2 which is formed into a bottomed cylindrical shape and in which a content is stored, and a sheet body 3 detachably closing an upper end opening 2a of the container body 2. The sheet body 3 includes an inner layer 3A facing the inside of the container body 2, an outer layer 3B facing the outside of the container body 2 and an intermediate layer 3C disposed between the inner layer 3A and the outer layer 3B. In the inner layer 3A and the outer layer 3B, notches 3a and 3b are separately formed to mutually differentiate positions along an opening surface of the upper end opening 2a of the container body 2 and reach boundary surfaces with the intermediate layer 3C. The notches 3a and 3b pass through the intermediate layer 3C, and the inner layer 3A, the outer layer 3B and the intermediate layer 3C in a portion located between the notches 3a and 3b with each other in the plan view of the sheet body 3 are laminated in a freely peelable manner.

Description

  The present invention relates to a heating container.

  2. Description of the Related Art Conventionally, a container body that contains contents therein and has a bottomed cylindrical shape, and a sheet body that removably closes an opening of the container body are provided, and a part of the sheet body is opened. What peels from a part and heats the contents with the container main body with a microwave oven is known. Further, in order to avoid an increase in pressure during heating, for example, as shown in Patent Document 1 below, a container body and a lid that closes the opening of the container body are provided, and pressure is released to the lid. A heating container having a function is known.

JP 2011-93576 A

However, in the above-described conventional heating container, there is a possibility that the internal pressure of the container body will increase unless at least a part of the sheet body is peeled off from the container body and the opening is opened before heating.
Moreover, in the heating container in which the pressure release function is provided in the lid, the configuration is complicated, and there is a possibility that the design may be restricted or the cost may be increased.

  The present invention has been made in view of such circumstances, and there is no need to open the opening of the container body before heating, and a heating container that can have excellent operability is provided. The purpose is to provide.

In order to achieve the above object, the present invention provides the following means.
A heating container according to the present invention is formed in a bottomed cylindrical shape, and includes a container body in which contents are accommodated, and a sheet body that removably closes an opening of the container body. The sheet body includes an inner layer facing the inside of the container body, and an outer layer facing the outside of the container body, and the inner layer and the outer layer have an opening surface of the opening of the container body. The incisions reaching the interface between the two layers are formed separately from each other at different positions, and the sheet body is located between the notches formed in the inner layer and the outer layer in plan view. The inner layer and the outer layer in the portion are laminated so as to be peelable.
In addition, a heating container according to the present invention is formed in a bottomed cylindrical shape, and includes a container main body in which contents are accommodated, and a sheet body that removably closes an opening of the container main body. A heating container, wherein the sheet body includes an inner layer facing the inside of the container body, an outer layer facing the outside of the container body, and an intermediate layer disposed between the inner layer and the outer layer. The inner layer and the outer layer have different incisions reaching the interface with the intermediate layer at different positions along the opening surface of the opening of the container body, and at least of these incisions. At least one of the inner layer and the outer layer in a portion that passes through the intermediate layer and is located between the cuts formed separately in the inner layer and the outer layer in the plan view of the sheet body When The intermediate layer, is characterized in that it is laminated releasably.

  According to the heating container of the present invention, when the pressure in the container body is increased by heating, this pressure is passed through the notch formed in the inner layer, and at least the interface between the inner layer and the outer layer, or at least the inner layer and the outer layer. It can exert between one side and an intermediate | middle layer, and can peel both. As a result, in the plan view of the sheet body, the cuts communicate with each other through the peeled interface of the portions located between the cuts separately formed in the inner layer and the outer layer, and the internal pressure of the container body is externally Released. Thereby, the pressure in a container main body can be released outside a container, and an internal pressure raise can be prevented.

  In the heating container according to the present invention, it is preferable that the cuts in the inner layer and the outer layer are arranged in parallel to each other and at a constant interval in a plan view.

  In this case, in the sheet body, the portion located between the cuts can be easily peeled over the entire area as described above, and the peeled portions can be prevented from being partially concentrated.

  According to the heating container according to the present invention, the sheet body can be delaminated from the cut formed in the sheet body by the internal pressure of the container body, and the internal pressure of the container body can be released. Therefore, it is not necessary to keep the opening portion open, and excellent operability can be achieved.

It is a sectional side view of the heating container by embodiment of this invention. It is the AA arrow line view shown in FIG. 1, Comprising: It is the figure which looked at the heating container which abbreviate | omitted the cover body from upper direction. It is an expanded sectional side view which shows the principal part of the heating container of FIG. FIGS. 4A and 4B are side cross-sectional views for explaining the operation of the heating container according to the present embodiment in a region B shown in FIG. 3, in which FIG. FIG.

  Hereinafter, an embodiment of a heating container according to the present invention will be described with reference to the drawings.

  As shown in FIG. 1, the heating container 1 of the present embodiment is formed in a bottomed cylindrical shape, and includes a container body 2 in which the contents W are accommodated, and an upper end opening 2 a of the container body 2. A sheet body 3 (see FIG. 2) that is detachably closed and a lid body 4 that is detachably attached to the container body 2 are provided.

  In addition, the center axis | shaft of each container main body 2 and the cover body 4 is located on a common axis. In the present embodiment, this common axis is referred to as a central axis O, and a direction orthogonal to the central axis O is a radial direction. Moreover, let the cover body 4 side be upper side along the central axis O, and let the bottom part 2b side of the container main body 2 be lower side. In addition, as an example of the contents W, FIG. 1 illustrates a liquid food or food material.

The container body 2 is open at the top and includes a bottom 2b and a body 2c. In addition, the trunk | drum 2c of this embodiment is formed in the cylindrical shape. An annular flange 2d extending outward in the radial direction is connected to the upper end opening 2a of the body 2c.
In addition, you may form this container main body 2 using the various shaping | molding methods using the metal mold | die which is not illustrated, for example, injection molding, thermoforming (sheet molding), compression molding, etc.

The lid 4 is a member that covers the upper end opening 2 a of the container body 2, is formed in a cylindrical shape with a top plate 4 a, and a peripheral wall 4 b. Out of the top plate 4 a, the outer peripheral edge 4 c is located below the others and is disposed on the flange 2 d of the container body 2. The peripheral wall 4b extends downward from the outer peripheral edge of the outer peripheral edge 4c. On the inner peripheral surface of the peripheral wall portion 4b, an annular engaging convex portion 4d protruding inward in the radial direction is formed. The lid 4 is detachably attached to the upper end opening 2a of the container body 2 by engaging the engaging projection 4d with the flange 2d.
The lid 4 can be molded by various methods such as injection molding, thermoforming (sheet molding), compression molding, and the like, similar to the container body 2.

  As shown in FIGS. 1 and 3, the sheet body 3 is a sheet (film) having a circular shape in plan view, and is stacked on the flange portion 2 d so as to cover the opening of the upper end opening portion 2 a of the container body 2. . The sheet body 3 seals the inside of the container body 2 by bonding the outer peripheral edge portion to the upper surface of the flange portion 2d. For the adhesion by the seal portion, various methods such as thermocompression bonding and adhesive may be used. In addition, the lid body 4 is covered with the upper end opening portion 2a of the container body 2 by engaging the engagement protrusion 4d with the flange portion 2d in a state where the opening of the container body 2 is closed by the sheet body 3. It is worn.

  The sheet body 3 includes an inner layer 3A facing the inside of the container body 2, an outer layer 3B facing the outside of the container body 2, and an intermediate layer 3C disposed between the inner layer 3A and the outer layer 3B. Yes.

  The inner layer 3A and the outer layer 3B are formed with a first notch 3a and a second notch 3b that reach at least the interface with the intermediate layer 3C by making the positions along the opening surface of the upper end opening 2a of the container body 2 different from each other. Each of these cuts 3a and 3b penetrates the intermediate layer 3C. The first cut 3 a and the second cut 3 b extend in parallel with each other at a constant interval, and are located on the inner side in the radial direction from the outer peripheral edge of the sheet body 3. In the illustrated example, the first cut 3 a and the second cut 3 b are located on the inner side in the radial direction from the inner peripheral surface of the upper end opening 2 a of the container body 2.

  As shown in FIG. 1 and FIG. 3, a portion of the sheet body 3 that is located between the cuts 3 a and 3 b that are separately formed in the inner layer 3 </ b> A and the outer layer 3 </ b> B in the plan view (hereinafter, a region between the cuts). The inner layer 3A and the outer layer 3B in 3c and the intermediate layer 3C are laminated so as to be peelable. In addition, the inner layer 3A and the outer layer 3B and the intermediate layer 3C other than the inter-cut region 3c may be peelable or may not be peelable by welding, fusion, adhesion, or the like. As shown in FIG. 2, the incision region 3 c is disposed at a position away from the central axis O in plan view.

  According to the present embodiment, when the inner layer 3A and the outer layer 3B in the inter-cut region 3c are separated from the intermediate layer 3C, the first cut 3a and the second cut 3b communicate with each other through the inter-cut region 3c, and the container The exhaust passage 3d (the exhaust passage 3d (the external space R between the sheet body 3 and the lid body 4) communicates with the outside of the sheet body 3 and allows the gas G generated in the container body 2 to escape to the external space R. 4) is formed.

In the present embodiment, the inner layer 3A and the outer layer 3B are formed in advance, arranged in a stacked state, and a material for forming the molten intermediate layer 3C is poured between them to form the intermediate layer 3C. To do. At this time, the inner layer 3A, the outer layer 3B, and the intermediate layer 3C are separable by selecting materials that are incompatible with the material forming the intermediate layer 3C and the material forming the inner layer 3A and the outer layer 3B. A sheet body 3 laminated (in a pseudo-adhered state) is obtained. In this case, for example, the outer layer 3B is formed of a polyethylene terephthalate (PET) film or sheet, the inner layer 3A is formed of an unstretched polypropylene (CPP) film or sheet, and the intermediate layer 3C is extruded in a molten state. (PE).
Since at least one of the inner layer 3A and the intermediate layer 3C or the outer layer 3B and the intermediate layer 3C may be laminated so as to be peelable, the other may be bonded with a compatible material.

According to the heating container 1 by this embodiment demonstrated above, there exist the following effects. Here, the case where the heating container 1 is heated is demonstrated.
In the heating container 1 according to the present embodiment, when the gas G such as water vapor is generated from the contents W by heating as shown in FIG. 1 and the internal pressure of the container body 2 is increased, the pressure is changed to that shown in FIG. As shown in FIG. 3, the first cut 3a formed in the inner layer 3A can be applied between the outer layer 3B and the intermediate layer 3C to separate the both 3B and 3C.

  That is, as shown in FIG. 4 (b), when the separation in the inter-cut region 3c reaches the second cut 3b, the cuts 3a and 3b communicate with each other between the outer layer 3B and the intermediate layer 3C. An exhaust passage 3d is formed, and the gas G in the container body 2 is discharged to the external space R through the exhaust passage 3d, and the internal pressure of the container body 2 is released to the outside. In this case, the inner layer 3A and the intermediate layer 3C are not peeled off. Thereby, the pressure in the container main body 2 can be released to the outside of the container, and an increase in internal pressure can be prevented. The gas G may not be generated.

  Further, in the heating container 1 of the present embodiment, as described above, the outer layer 3B and the intermediate layer 3C are not limited to being peeled off, but the inner layer 3A and the intermediate layer 3C are peeled off in the inter-cut region 3c. There is also. In this case, the pressure of the container body 2 can be exerted between the inner layer 3A and the intermediate layer 3C through the first cut 3a to separate the both 3A and 3C, and cut between the layers 3A and 3C. An exhaust passage 3d that communicates between 3a and 3b is formed. In this case, the outer layer 3B and the intermediate layer 3C are not peeled off.

  Further, since the cuts 3a and 3b of the inner layer 3A and the outer layer 3B are arranged in parallel with each other at a constant interval in a plan view, the inter-cut region 3c of the sheet body 3 is peeled as described above. This is advantageous in that it can be easily performed and the peeled portions can be prevented from being partially concentrated.

  The technical scope of the present invention is not limited to the above embodiment, and various modifications can be made without departing from the spirit of the present invention.

For example, in the above embodiment, the cuts 3a and 3b are provided in one place in each of the inner layer 3A and the outer layer 3B, but a plurality of cuts may be provided in each layer 3A and 3B, or the cuts in each layer 3A and 3B may be provided. The number may be different. For example, the inner layer 3A can be cut at one place, and the outer layer 3B can be cut at two places on both sides of the first cut 3a on the inner layer 3A side in plan view.
Further, the positions of the cuts and the intervals between the cuts (the width dimension of the inter-cut region 3c) can be set as appropriate. For example, it is also possible to adjust the internal pressure in the container body 2 by the interval between the cuts. When the time until the internal pressure of the container body 2 is released to the outside is lengthened, the internal pressure between the cuts depends on the time. What is necessary is just to widen a space | interval.

  It is possible to make the part other than the inter-cut region 3c peelable or impossible. Further, by keeping the adhesive force between the layers in the inter-cut region 3c smaller than the adhesive force between the layers in other portions, only the inter-cut region 3c can be peeled first, and the exhaust passage can be efficiently performed. 3d can be formed.

Further, in the present embodiment, both the first cut 3a and the second cut 3b penetrate the intermediate layer 3C, but it is sufficient that at least one of the first cut 3a and the second cut 3b penetrates the intermediate layer 3C. That is, the other notch which does not penetrate the intermediate layer 3C is configured to penetrate only the inner layer 3A or the outer layer 3B. In this case, delamination proceeds at the interface with the intermediate layer on the side that does not penetrate the intermediate layer 3C in the thickness direction.
Furthermore, in the above embodiment, the inner layer, the outer layer, and the intermediate layer are each configured as a single layer, but each layer may be configured to include a plurality of films.

  Furthermore, in the present embodiment, the sheet body 3 has a three-layer structure of the inner layer 3A, the outer layer 3B, and the intermediate layer 3C, but it is also possible to have two layers of the inner layer 3A and the outer layer 3B. In this case, in the inner layer and the outer layer, the positions along the opening surface of the opening of the container main body are made different from each other, and cuts reaching the interface between the two layers are formed separately, and both of the portions located between the cuts are both formed. It suffices if the layers are laminated so as to be peelable.

  Moreover, in the said embodiment, although the container main body 2 was made into cylindrical shape, as long as it is a bottomed cylinder shape, you may make it a cross-sectional elliptical shape or a cross-sectional angular shape. At this time, the shape of the lid 4 may be appropriately changed according to the shape of the container body 2.

  Further, in the above embodiment, the lid 4 is detachably attached to the upper end opening 2 a of the container body 2 by engaging the engagement protrusion 4 d of the lid 4 with the flange portion 2 d of the container body 2. However, the present invention is not limited to this case. For example, the lid body 4 may be detachably attached by screwing the lid body 4 to the container body 2, or the lid body 4 may not be provided.

  In addition, in the range which does not deviate from the meaning of this invention, it is possible to replace suitably the component in above-mentioned embodiment with a well-known component, and you may combine the above-mentioned modification suitably.

DESCRIPTION OF SYMBOLS 1 Heating container 2 Container main body 2a Upper end opening part 3 Sheet body 3A Inner layer 3B Outer layer 3C Middle layer 3a First cut 3b Second cut 3c Area between cuts 3d Exhaust passage 4 Lid G gas O Central axis R External space W Contents

Claims (3)

A container body that is formed into a bottomed cylindrical shape and that contains contents therein,
A sheet body that detachably closes the opening of the container body;
A heating container comprising:
The sheet body includes an inner layer facing the inside of the container body, and an outer layer facing the outside of the container body,
In the inner layer and the outer layer, the positions along the opening surface of the opening of the container main body are different from each other, and a cut reaching the interface between both layers is formed separately.
Of the sheet body, in the plan view, the inner layer and the outer layer in a portion located between the cuts separately formed in the inner layer and the outer layer are laminated in a detachable manner. Heating container. A container body that is formed into a bottomed cylindrical shape and that contains contents therein,
A sheet body that detachably closes the opening of the container body;
A heating container comprising:
The sheet body includes an inner layer facing the inside of the container body, an outer layer facing the outside of the container body, and an intermediate layer disposed between the inner layer and the outer layer,
The inner layer and the outer layer have different incisions reaching the interface with the intermediate layer at different positions along the opening surface of the opening of the container body, and at least one of these incisions Through the middle layer
Of the sheet body, in the plan view, at least one of the inner layer and the outer layer in a portion located between the cuts separately formed in the inner layer and the outer layer and the intermediate layer are detachable. A heating container characterized by being laminated on.   The heating container according to claim 1 or 2, wherein the cuts in each of the inner layer and the outer layer are arranged in parallel to each other at a constant interval in a plan view.

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