JP2013147292A - Package - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a package that can achieve long term food preservation, prevent the rupture thereof when heating/cooking with a microwave oven, and which can be easily opened by the consumer after heating/cooking.SOLUTION: The package 1 is formed of: a lid body 6; and a container 2 including side surfaces, a bottom surface, an opening formed on the side opposite to the bottom surface, and a flange part 3 provided on the peripheral edge of the opening and projecting toward the outer circumference. At the flange part 3, the lid body 6 and the container 2 are tightly sealed with a belt-like or linear adhesion part. A notch 5 is formed at the flange part 3 toward the center of the container.

Description

  The present invention relates to a package suitable for cooking in a microwave oven that can store food. More specifically, the present invention can store food for a long period of time and is optimal for cooking in a microwave oven that can be heated and cooked with a microwave oven without opening the seal. It relates to a package.

  In recent years, with the spread of microwave ovens, development of microwave-compatible foods that are heated or cooked in a microwave oven has been actively conducted. Along with this, microwave oven packaging for packaging foods that are compatible with microwave ovens is required to be able to withstand heating and cooking in a microwave oven as well as the transport and storage functions required for general trays and containers. It is becoming.

  When cooking and cooking in a microwave oven, the internal pressure of the package rises due to water vapor generated from the food, the package bursts and the food splashes, contaminates the microwave oven, or burns the human body There is a risk of harm.

  For this reason, before the food stored in the package is heated / cooked in the microwave, the internal pressure of the package does not increase by partially opening the package or opening a hole in the package. Thus, a method for preventing the package from bursting has been taken. However, such a method is time-consuming, and since most of the water vapor generated by heating is discharged out of the package, the steaming effect of the food by the water vapor is reduced.

  In order to eliminate the drawbacks of the conventional packaging body, various packaging bodies for cooking in a microwave oven have been developed that prevent the packaging body from bursting during heating and cooking in a microwave oven.

  For example, in order to prevent the internal pressure in the package from rising when heating / cooking in a microwave oven, the internal steam is configured to be degassed outside to prevent the package from bursting (see below) (See Patent Document 1) and the strength of the seal between the container and lid of the package, and when the internal pressure in the package rises, the part with weak seal strength is peeled off. What has been prevented (see Patent Document 2 below) is known.

Utility Model Registration No. 3060599 Japanese Unexamined Patent Publication No. 09-221177

  However, in the device described in Patent Document 1, since the portion where the internal vapor is degassed to the outside is not sealed, it cannot be used for food for long-term storage, When heating and cooking with a microwave oven, the internal pressure does not increase, so that a sufficient steaming effect and temperature increase cannot be obtained, and the taste of the food after cooking falls.

  Further, the invention described in the above-mentioned Patent Document 2 is also a packaging in which a portion with low sealing strength does not exist because a portion with low sealing strength peels off naturally during long-term storage, or a portion with low sealing strength has poor sealing performance. Compared to the case of using a body, the storage period is shortened.

  As a result of various studies to solve the problems of the prior art in the microwave oven cooking package as described above, the inventors have devised the shape of the container part, so that the interior of the package is more than the conventional one. The food can be stored for a long time, and the packaging can be prevented from rupturing during heating and cooking without requiring tedious work when heating and cooking using a microwave oven. The present inventors have found that the consumer can easily open the package, and have completed the present invention.

  That is, the present invention can store food for a long period of time, and when heating / cooking in a cooking device using a microwave such as a microwave oven, it is being heated / cooked without requiring troublesome work from the consumer. It is an object of the present invention to provide a package that can be heated and cooked in a microwave oven that can prevent the package from being ruptured, and that allows the consumer to easily open the package after heating and cooking.

  In order to achieve the above object, the packaging body of the present invention is provided with a lid, a side surface, a bottom surface, an opening formed on the side facing the bottom surface, and a peripheral edge of the opening to project to the outer peripheral side. A container having a lid, wherein the lid and the container are sealed with a band-shaped or linear adhesive portion in the collar, and the collar includes a container of the container. A cut portion is formed toward the center.

  With the above configuration, when the food in the package of the present invention is heated and cooked with a microwave oven, moisture evaporates and the container and the lid expand, and when the internal pressure exceeds a predetermined level, the vicinity of the cut portion As a result, the lid and the container peel off. This is because in the package of the present invention, the deformation of the adhesive portion in the vicinity of the cut portion is larger than that of other adhesive portions, and an excessive force acts. Therefore, according to the packaging body of the present invention, when heating and cooking in a microwave oven, a predetermined internal pressure can be ensured and can be easily peeled off from the cut portion, and when the internal pressure becomes higher than that, the lid body Since the container and the container are peeled off, the package can be prevented from being ruptured and can be easily opened at the peeled place. Furthermore, since the container and the lid are sealed with a band-like or linear adhesive part, the foodstuff in the package can be stored for a long period of time.

  Moreover, in the package of this invention, it is preferable that the recessed part is formed in the direction which goes to the bottom face of the said container from the intersection of the said notch part and the said side surface on the side surface of the said container.

  By forming the concave portion on the side surface of the container, deformation near the cut portion becomes larger when the container is deformed. Therefore, the container and the lid body are easily peeled off at the cut portion when the internal pressure becomes larger than a predetermined internal pressure.

  Moreover, in the package of this invention, it is preferable that the width | variety of the said collar part in the said notch part is 20 to 50% of the width | variety of the said collar part.

  If the width of the collar portion at the cut portion is too short, there is a possibility that it will peel off naturally. Moreover, when too long, even if an internal pressure rises, it will be hard to peel. For this reason, the width | variety of the collar part in an incision part shall be 20% or more and 50% or less of the width | variety part of a collar part, and a container and a cover body will peel when internal pressure rises, maintaining sufficient adhesive strength. It can be set as a package that is easy to do.

  In the package of the present invention, it is preferable that a plurality of the cut portions are formed.

  Since a plurality of cut portions are formed, the burden on each cut portion is reduced, and the lid body does not peel from the container until the internal pressure becomes considerably high. For this reason, even if an item that needs to be heated while enclosing the internal pressure at a certain level or higher is enclosed, the package does not rupture during heating, and the consumer can easily open after heating and cooking. Can do.

  Moreover, in the package of this invention, it is preferable that the shape of the said notch part is V shape, U shape, U shape, semicircle shape, and trapezoid shape by planar view.

  Moreover, in the package of this invention, it is preferable that the shape of the said container is any of square shape, rectangular shape, circular shape, and elliptical shape by planar view.

It is an external appearance perspective view of the package which concerns on 1st Embodiment of this invention. 2A is a plan view of the package according to the first embodiment of the present invention, and FIG. 2B is a partially enlarged view of IIA in FIG. 2A. 3A is a front view of the package according to the first embodiment of the present invention before heating, FIG. 3B is a front view of the package according to the first embodiment of the present invention during heating, and FIG. 3C is the first view of the present invention. It is a front view of the state where a part of lid was exfoliated during heating of the package concerning an embodiment. It is a top view which shows the state to which the internal pressure during heating of the package which concerns on 1st Embodiment of this invention is added. FIG. 5A is a plan view of a package according to the second embodiment of the present invention, and FIG. 5B is a partially enlarged view of VA in FIG. 5A. 6A is a front view of the package according to the second embodiment of the present invention before heating, FIG. 6B is a front view of the package according to the second embodiment of the present invention during heating, and FIG. 6C is a second view of the present invention. It is a front view in the state where the top seal peeled off during heating of the package concerning an embodiment. 7A is an enlarged view of the VIIA portion in FIG. 6A, FIG. 7B is an enlarged view of the VIIB portion in FIG. 6B, and FIG. 7C is an enlarged view of the VIIC portion in FIG. It is a top view in process of heating of the package which concerns on 2nd Embodiment of this invention. FIG. 9A is a plan view of a package according to a third embodiment of the present invention, and FIG. 9B is an enlarged view of a portion IXA in FIG. 9A. It is a top view of the package concerning a modification of the present invention. 11A to 11D are plan views of a package according to another modification of the present invention.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. However, the embodiment shown below exemplifies a package for embodying the technical idea of the present invention, and is not intended to specify the present invention as the package described herein. The invention is equally applicable to other embodiments within the scope of the claims.

[First embodiment]
Initially, the structure of the package concerning 1st Embodiment is demonstrated with reference to FIG.1 and FIG.2. 1 is an external perspective view of the package according to the first embodiment of the present invention, FIG. 2A is a plan view of the package according to the first embodiment of the present invention, and FIG. 2B is an enlarged view of a portion IIA of FIG. 2A. FIG.

  The packaging body 1 of 1st Embodiment has the substantially rectangular parallelepiped shape which has the bottom face 2a and the side surfaces 2b-2e standingly arranged from the peripheral part of the bottom face 2a, and the surface facing the bottom face 2a is opened. The container 2 and the lid 6 that closes the opening of the container 2 are formed.

  In each of the side surfaces 2b to 2e of the container 2, a flange 3 protruding toward the outer periphery is formed on the side located on the opening side of each side surface. The lid 6 is made of a transparent laminated film, and is attached to the upper surface of the opening of the container 2 so as to cover the entire opening of the container 2. The part where the collar part 3 and the lid 6 are in contact is bonded by heat welding, and the inside of the package 1 is in a sealed state. Since the method of heat welding is a known method, its detailed description is omitted. The lid 6 may be a single layer film instead of a laminated film.

  The member used for the container 2 should just be a member which permeate | transmits a microwave, is water-resistant, and has high flexibility. In addition, it is preferable that the material is made of a material having low thermal conductivity because the risk of burning when the package 1 is taken out from the microwave oven after heating and cooking is suppressed. Examples of the member that satisfies the above conditions include polypropylene resin, polyethylene resin, mixed resin of polypropylene resin and polyethylene resin, polyethylene terephthalate resin, polystyrene resin, and polylactic acid resin.

  The member used for the lid body 6 is a single member as long as it is a member that transmits microwaves and at least a portion that opposes the container 2 can be thermally welded to the container 2 and is formed of a flexible member. Even if it consists of a member of these, it may consist of a member of a multilayered structure. For example, at least a portion facing the container 2 includes polyester resin, polyamide resin, polyethylene resin, polyethylene terephthalate resin, polypropylene resin, polystyrene resin, polylactic acid resin, polyvinyl chloride resin, polychlorinated resin. Vinylidene resins, polycarbonate resins, and the like can be used.

  In the packaging body 1 of the first embodiment, at least one concave portion 4 is provided on the side surface of the container 2 toward the central direction of the container 2. Thus, a V-shaped cut portion 5 is provided at a position corresponding to the concave portion 4. The recess 4 is located at the approximate center of the side surface.

  Next, with reference to FIG. 3, FIG. 4, the effect | action at the time of heating and cooking the package which concerns on 1st Embodiment of this invention with a microwave oven is demonstrated. 3A is a front view before heating the package according to the first embodiment of the present invention, FIG. 3B is a front view during heating of the package according to the first embodiment of the present invention, and FIG. FIG. 4 is a plan view showing a state in which an internal pressure is applied during heating of the packaging body according to the first embodiment of the present invention, and FIG. 4 is a front view of the packaging body according to the first embodiment during the heating of the packaging body. .

  As shown in FIG. 3A, when the packaging body 1 of the present embodiment is placed in a microwave oven and heating / cooking is started, the liquid enclosed in the packaging body 1 is vaporized, so that the internal pressure in the packaging body 1 is increased. Ascend and the lid 6 expands as shown in FIG. 3B. At this time, the container 2 also expands, a force acts in the direction of the arrow shown in FIG. 4, and the shape of the container 2 is deformed. At this time, force acts in the direction in which the cut portion 5 formed in the collar portion of the container 2 is crushed. Since the microwave from the microwave oven is easily focused on the corner of the container 2, the concave portion 4 and the cut portion 5 have higher energy than others and are likely to be hotter than other portions. Therefore, in combination with the shape change of the container 2, the adhesion between the container 2 and the lid body 6 is easily peeled in the vicinity of the recess 4.

  Thereafter, when the internal pressure in the container 2 becomes higher than a predetermined value, as shown in FIG. 3C, the bonded portion between the container 2 and the lid body 6 is peeled in the vicinity of the concave portion 4, and gas is released from the peeled portion to the outside. Since it ejects, the package 1 can be prevented from bursting.

  As shown in FIG. 2B, the width W2 of the flange 3 in the cut portion 5 is shorter than the width W1 of the flange 3. By making the width W2 of the flange portion 3 in the cut portion 5 shorter than the width W1 of the flange portion 3, shape deformation in the vicinity of the concave portion 4 is likely to occur due to pressure from the inside. However, if the width W2 of the flange portion 3 in the cut portion 5 is shorter than 2 mm, the adhesive strength in the vicinity of the cut portion 5 is lowered, and the lid body 6 may be peeled from the container 2 naturally. Since the width W1 of the heel part 3 is usually 8 to 10 mm, if the width W2 of the heel part 3 in the cut portion 5 is 20% or more of the width W1 of the heel part 3, sufficient adhesive strength is maintained. can do.

  In addition, when the width W2 of the flange portion 3 in the cut portion 5 is too long, a shape change in the vicinity of the concave portion 4 is difficult to occur. Therefore, it is preferable that the width W1 of the flange 3 in the cut portion 5 is 50% or less of the width W1 of the flange 3. In this embodiment, the width of W1 is 8 mm and the width of W2 is 4 mm.

[Second Embodiment]
Next, the configuration of the package according to the second embodiment will be described with reference to FIGS. 5 and 6. 5 is a plan view of the package according to the second embodiment of the present invention, FIG. 6A is a front view of the package according to the second embodiment of the present invention before heating, and FIG. 6B is the second embodiment of the present invention. FIG. 6C is a front view of a state in which the top seal is peeled off during heating of the package according to the second embodiment of the present invention. Moreover, the same code | symbol is provided about the structure similar to 1st Embodiment, and description is abbreviate | omitted.

  The packaging body 1B according to the second embodiment of the present invention is different from the packaging body of the first embodiment in that the cut portion 51 formed in the flange portion 3 of the container 2 is a slit. By making the structure of the cut portion into a slit, it is only necessary to cut a part of the collar portion of the container having the same shape as that of the conventional package, so that it is not necessary to produce a unique mold. In addition, the relationship between W1 and W2 in FIG. 5B is the same as the relationship between W1 and W2 in FIG. 2B of the package 1 according to the first embodiment.

  Next, with reference to FIGS. 6-8, the effect | action at the time of heating and cooking the package which concerns on 2nd Embodiment of this invention with a microwave oven is demonstrated. 6A is a front view before heating the package according to the second embodiment of the present invention, FIG. 6B is a front view during heating of the package according to the second embodiment of the present invention, and FIG. FIG. 7A is an enlarged view of the VIIA portion in FIG. 6A, FIG. 7B is an enlarged view of the VIIB portion in FIG. 6B, and FIG. 7C is a view of the state in which the top seal is peeled off during heating of the package according to the second embodiment. FIG. 8 is an enlarged view of the VIIC portion in 6C, and FIG. 8 is a plan view showing a state in which an internal pressure is applied during heating of the package according to the second embodiment of the present invention. 6 to 8, the same reference numerals are given to the same components as those in the first embodiment, and the description thereof is omitted.

  As shown to FIG. 6A, when the package 1 of this embodiment is put in a microwave oven and a heating and cooking are started, the liquid enclosed in the package 1 will vaporize, and the internal pressure in the package 1 will be increased. As shown in FIG. 6B, the lid body 6 expands. Further, the container 2 also expands and deforms into a spherical shape as shown in FIG. Microwaves from the microwave oven tend to focus at the corners, and the recesses 4 and the cuts 5 have higher energy than others and are likely to be hotter than other parts. Therefore, in combination with the shape change of the container 2, the adhesion between the container 2 and the lid body 6 is easily peeled in the vicinity of the recess 4. Further, a force acts in the direction in which the cut portion 5 is crushed, and as shown in FIG. 6C, the flange portion 3 separated by the cut portion 5 overlaps, and one of the flange portions 3 is displaced upward, and the lid 2 is removed from the container 2. Peels off.

  When the internal pressure becomes higher than a predetermined value, as shown in FIG. 6C and FIG. 7C, the adhesion between the container 2 and the lid body 6 is peeled off above the cut portion 5, and gas is blown out to the outside. The rupture of the body 1B can be prevented.

[Third Embodiment]
Next, with reference to FIG. 9, the structure of the package concerning 3rd Embodiment of this invention is demonstrated. 9A is a plan view of a package according to the third embodiment of the present invention, and FIG. 9B is an enlarged view of a portion IXA in FIG. 9A.

  The packaging body 1 </ b> C according to the third embodiment of the present invention is provided with a slit 51 </ b> C at a portion of the cut portion 5 </ b> C formed in the flange portion 3 of the container 2 that is most biting inside the container 2. By combining the cut portion 5C and the slit 51C, the cut portion 5C portion is easily deformed when the internal pressure is increased without reducing the adhesive strength of the flange portion 3, thereby preventing the package 1C from being ruptured more reliably. can do.

[Modification]
Next, with reference to FIG. 10, FIG. 11, the structure of the package concerning the modification of this invention is demonstrated. 10 is a plan view of a package according to a modification of the present invention, and FIGS. 11A to 11D are plan views of the package according to another modification of the present invention.

  The cut portion provided in the package of the present invention may be provided not only at one location on the side but also at multiple locations, one on each side, as in the package of the modification shown in FIG. When provided in a plurality of places, the force applied to each cut portion is dispersed, and the lid and the container are peeled off with a weaker force. By adopting such a configuration, the packaging of the present invention can be used even when sealing ingredients that do not need to be pressurized during heating or cooking, or when sealing ingredients that have low adhesion and do not need long-term storage. The body can be used.

  Further, the shape of the cut portion 5E provided in the package of the present invention is not only a V shape in plan view, but also a U shape or a U shape as shown in FIG. A semicircular shape or a trapezoidal shape may be used. Further, the shape of the package is not limited to a square shape in plan view, but may be a rectangular shape, a circular shape, an elliptical shape, or the like as shown in FIGS. 11B to 11D.

DESCRIPTION OF SYMBOLS 1 Package 2 Container 3 Gutter part 4 Recessed part 5 Cut part 6 Lid

Claims (6)

A lid,
A container having a side surface, a bottom surface, and an opening formed on a side facing the bottom surface, and a flange provided on a peripheral edge of the opening and projecting to the outer peripheral side;
A package in which the lid and the container are sealed with a band-shaped or linear adhesive portion in the collar portion,
The packaging body, wherein a cut portion is formed in the collar portion toward the center of the container.   The packaging body according to claim 1, wherein a concave portion is formed on a side surface of the container in a direction from an intersection of the cut portion and the side surface toward a bottom surface of the container.   The package according to claim 1, wherein the width of the flange in the cut portion is 20% or more and 50% or less of the width of the flange.   The package according to claim 1, wherein a plurality of the cut portions are formed.   The package according to claim 1, wherein the shape of the cut portion is any one of a V shape, a U shape, a U shape, a semicircular shape, and a trapezoidal shape in plan view.   The package according to claim 1, wherein the container has a square shape, a rectangular shape, a circular shape, or an elliptical shape in plan view.

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