JP5452172B2 - container - Google Patents

Description

  The present invention relates to a container.

  Normally, when a container containing contents such as liquid or solid food or foodstuffs is heated with a microwave oven, the water in the contents evaporates to generate gas (water vapor), increasing the internal pressure of the container End up. If this internal pressure exceeds a predetermined pressure, problems such as removal of the lid of the container will occur. In view of this, a container is known in which the internal pressure can be appropriately released out of the container (see Patent Document 1).

In this container, a thin film portion is formed on the container body. A plurality of tongue pieces that can be bent by slits are formed in the thin portion. The tongue pieces are bent so that the inside and outside of the container are blocked from communicating with each other.
According to this container, when the internal pressure rises and reaches a predetermined pressure, the plurality of tongue pieces are bent so that the inside and outside of the container communicate with each other, thereby releasing the pressure inside the container and reducing the internal pressure. Is possible.
When the internal pressure is reduced, the plurality of tongue pieces are restored to their original state by their own restoring force, and the communication between the inside and outside of the container is blocked.

Registered Utility Model No. 3144711

  However, in the conventional container described above, the tongue piece bends when the internal pressure reaches a predetermined pressure, so that the internal pressure is rapidly reduced. Therefore, the internal pressure fluctuates greatly, and it is difficult to perform heating while suppressing the fluctuation of the internal pressure as much as possible.

  This invention is made | formed in view of such a situation, The objective is to provide the container which can release a pressure out of a container, suppressing the fluctuation | variation of an internal pressure.

In order to achieve the above object, the present invention provides the following means.
(1) A container according to the present invention includes a container body that is formed in a bottomed cylindrical shape, and in which contents are stored, and a top plate in which a discharge hole that discharges gas is formed. A lid that is detachably attached to the opening, a plurality of convex portions formed by printing on the top plate, and the top plate so as to cover the discharge hole and the plurality of convex portions. Of the plurality of convex portions, an outer edge portion positioned further radially outward than the outermost convex portion located on the outer edge portion side of the top plate is sealed along the outer periphery with respect to the top plate . The outermost convex portion is provided continuously with the peripheral wall of the ridge extending in the circumferential direction so as to face the circumferential wall at an interval, and outward in the radial direction. A pair of outflow walls extending, and an outer edge portion of the sheet body in a region sandwiched between the pair of outflow walls. Part on the seal is formed non-sealed portion has been released, defining an outlet for discharging the said gases released by the non-sealing portion and the top plate Te, wherein a plurality of said protrusions The sheet body and the top plate define a flow path that guides the gas discharged from the discharge hole to the outlet, and the flow path has at least a flow direction of the gas discharged from the discharge hole. It is characterized in that it is led to the outlet while changing once .

  In the container according to the present invention, when gas is generated from the contents by heating or the like, this gas is discharged from the discharge hole and then flows between the top plate and the sheet body. Here, a flow path defined by the convex portion, the sheet body, and the top plate is formed between the top plate and the sheet body. Therefore, the gas discharged from the discharge hole is guided to the outlet while flowing through this flow path, and then discharged to the outside from the outlet. Thereby, the pressure in the container can be released to the outside of the container, and an increase in the internal pressure can be prevented.

  In particular, since the gas flows using a narrow flow path defined by the convex portion, the sheet body, and the top plate, this gas is subjected to flow resistance and is slowly discharged from the outlet. Therefore, unlike the conventional case, it is possible to suppress the internal pressure from rapidly decreasing. That is, the pressure can be released outside the container while suppressing the fluctuation of the internal pressure. Therefore, it is easy to maintain the pressure in the container at a constant level, and it is difficult to affect the contents due to pressure fluctuation.

In addition, the flow passage is formed so as to change the flow direction of the gas at least once when the gas discharged from the discharge hole is guided to the outlet. Therefore, the gas is subjected to flow resistance by changing the flow direction, so that the speed is further reduced and the gas is slowly discharged from the outlet over time.
Accordingly, it is possible to more effectively suppress the internal pressure from rapidly decreasing, and to release the pressure to the outside of the container while suppressing fluctuations in the internal pressure as much as possible.

(2) The container according to the present invention is characterized in that, in the container according to the present invention, the discharge hole is formed at substantially the center of the top plate.

  In the container according to the present invention, since the discharge hole is formed at substantially the center of the top plate, a sufficient distance can be secured between the discharge hole and the outlet, and the outlet is connected to the outer edge of the sheet body. Regardless of where they are formed, it is easy to form a flow path between them, and the degree of freedom in designing the flow path can be improved.

(3) In the container according to the present invention, the container according to the present invention is characterized in that a plurality of the outlets are formed along the outer periphery of the sheet body.

  In the container according to the present invention, since a plurality of outlets are formed, gas can be discharged from the plurality of outlets evenly and efficiently. Therefore, even when the internal pressure rapidly increases, the pressure can be released out of the container while suppressing fluctuations in the internal pressure as much as possible.

  According to the container according to the present invention, the pressure can be released to the outside of the container while suppressing the fluctuation of the internal pressure. Therefore, it is easy to maintain the pressure in the container at a constant level, and it is difficult to affect the contents due to pressure fluctuation.

It is a half longitudinal section showing an embodiment of a container concerning the present invention. It is the figure which looked at the container shown in FIG. 1 from upper direction. It is sectional drawing to which some containers shown in FIG. 1 were expanded. It is the figure which expanded the area | region A shown in FIG. It is a top view which shows the modification of the container which concerns on this invention. It is a top view which shows another modification of the container which concerns on this invention.

Hereinafter, embodiments of a container according to the present invention will be described with reference to FIGS. 1 to 6.
As shown in FIGS. 1 to 3, the container 1 of the present embodiment includes a container body 2 in which contents W are stored, a lid body 3 that is detachably attached to the container body 2, and a lid body 3. And a sheet body 4 stacked on the top plate.

FIG. 1 is a longitudinal half sectional view of the container 1. FIG. 2 is a view of the container 1 shown in FIG. 1 as viewed from above. However, in FIG. 2, it has shown in the state which permeate | transmitted the sheet | seat body 4. FIG. FIG. 3 is an enlarged cross-sectional view of the container body 2 shown in FIG.
The central axes of the container body 2 and the lid body 3 are located on a common axis. In the present embodiment, this common axis is referred to as a central axis O, a direction orthogonal to the central axis O is a radial direction, and a direction that goes around the central axis O is a circumferential direction. Moreover, let the cover body 3 side be an upper side along the central axis O, and let the bottom part 2a side of the container body 2 be a 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 formed in a bottomed cylindrical shape having an open top, and includes a bottom portion 2a and a trunk portion 2b. In addition, the trunk | drum 2b of this embodiment is formed in the cross-sectional circle shape. An annular flange portion 2c extending outward in the radial direction is connected to the upper end portion of the body portion 2b.
The container body 2 is formed using various molding methods using a mold (not shown), such as injection molding, thermoforming (sheet molding), compression molding, and the like.

The lid 3 is a member that covers the opening of the container body 2 and seals the contents W, and includes a top plate 3a and a peripheral wall 3b. The lid 3 is formed by using various molding methods using a mold (not shown), like the container 2.
The top plate 3a is a member having a circular shape in plan view, the outer edge portion of which is formed in a size that overlaps the flange portion 2c of the container body 2, and the peripheral wall portion 3b is formed so as to extend downward along the outer edge portion. Has been. On the inner peripheral surface of the peripheral wall portion 3b, an annular engagement convex portion 3c protruding inward in the radial direction is formed. The lid 3 is detachably attached to the opening of the container body 2 by engaging the engaging projection 3c with the flange 2c.

At the center of the top plate 3a, a discharge hole 10 for discharging the gas G generated in the container 1 and flowing between the top plate 3a and the sheet body 4 is formed so as to penetrate the top plate 3a. On the top plate 3a, a convex portion 11 is formed in which a resin material or the like (ink, paint, etc.) is thickened by printing.
At this time, the convex portion 11 of the present embodiment is not locally projected, but is formed in a convex line that has a bank shape with the projections continuously connected. If it demonstrates in detail, the convex part 11 will be formed in the planar view C shape extended in the circumferential direction so that the discharge hole 10 might be enclosed. Then, the convex portions 11 having a C shape in a plan view are continuously arranged with a certain interval toward the outer side in the radial direction while changing the direction by 180 degrees around the central axis O (the central axis O is concentric). As many lines as possible).
The outermost convex portion 11 has a pair of C-shaped peripheral walls 11a surrounding the convex portion 11 on the inner side and a pair of both ends of the peripheral walls 11a that extend outward in the radial direction. And an outflow wall 11b.

  The sheet body 4 is a thin sheet (film) having a circular shape in a plan view formed of a flexible material that is not easily torn, and is stacked on the top plate 3a so as to cover the discharge hole 10 and the convex portion 11 described above. ing. At this time, the sheet body 4 is formed to have a larger diameter than the outermost convex portion 11. And the outer edge part of the sheet | seat body 4 located in radial direction outer side from this convex part 11 of this outermost periphery is sealed with respect to the top plate 3a along the outer periphery (shaded area | region shown by the arrow S of FIG. 2) ). Specifically, it is sealed using thermocompression bonding or an adhesive.

  However, as shown in FIG.2 and FIG.4, a part of outer edge part of the sheet | seat body 4 becomes the non-seal part 4a of the state by which the seal | sticker was released. Specifically, the seal is released in a region sandwiched between the pair of outflow walls 11b. FIG. 4 is an enlarged view of the area A shown in FIG. The non-sealed portion 4a and the top plate 3a define an outlet 12 through which the gas G discharged from the discharge hole 10 flows out.

As shown in FIGS. 1 to 4, the convex portion 11, the top plate 3 a, and the sheet body 4 define a flow passage 13 that guides the gas G discharged from the discharge hole 10 to the outlet 12. .
Therefore, according to the flow passage 13 of the present embodiment, as shown in FIG. 2, after the gas G released from the discharge hole 10 has flowed radially outward, it is allowed to flow about half a circumference in the circumferential direction, and thereafter It is designed so that it can be led to the outlet 12 while changing the flow direction of the gas G in a complicated manner, such as flowing in the radially outward direction again, and then flowing in the circumferential direction about half a circle.

Next, the case where the container 1 mentioned above is heated with a microwave oven etc. is demonstrated.
In this case, first, as shown in FIG. 1, a gas G such as water vapor is generated from the contents W by heating, and the internal pressure in the container 1 begins to increase. However, the gas G is discharged from the discharge hole 10 formed in the top plate 3 a as shown in FIG. 3 and flows between the top plate 3 a and the sheet body 4. As shown in FIG. 2, the gas G is guided to the outlet 12 while flowing along the flow path 13 defined by the convex portion 11, the sheet body 4, and the top plate 3a, It is discharged from the outlet 12 to the outside. Thereby, the pressure in the container 1 can be released out of the container 1, and an increase in the internal pressure can be prevented.

In particular, since the flow passage 13 of this embodiment is a narrow flow passage defined by the convex portion 11, the sheet body 4, and the top plate 3a, the gas G is slowly discharged from the outlet 12 due to flow resistance. Is done. Therefore, unlike the conventional case, it is possible to suppress the internal pressure from rapidly decreasing. That is, the pressure can be released out of the container 1 while suppressing fluctuations in the internal pressure.
Moreover, when the gas G is guided to the outlet 12, the outlet passage 13 is formed so as to guide the gas G to the outlet 12 while changing the flow direction of the gas G in a complicated manner. That is, after the gas G is discharged from the discharge hole 10, it flows radially outward, then flows about half a circumference in the circumferential direction, and then flows again radially outward, and so on. The direction is changed while sequentially repeating the flow in the circumferential direction and the flow in the circumferential direction, and the flow is guided to the outlet 12.
Therefore, the gas G is subjected to flow resistance by changing the flow direction, so that the speed is further reduced and is slowly discharged from the outlet 12 over time. Therefore, the pressure can be released out of the container 1 while suppressing the fluctuation of the internal pressure as much as possible.

  Thus, according to the container 1 of the present embodiment, the pressure can be released to the outside of the container 1 while suppressing the fluctuation of the internal pressure as much as possible, the pressure inside the container 1 can be easily maintained constant, and is caused by the pressure fluctuation. It is difficult to affect the contents W.

  By the way, although the convex part 11 is formed on the top plate 3a of the lid 3, the convex part 11 can be easily formed by printing after the lid 3 is formed by injection molding or the like. Therefore, when producing the lid 3 of the present embodiment, it is not necessary to change the mold, and it can be easily produced with the same mold as the conventional one. Therefore, the container 1 can be manufactured without taking time and cost increase of the container 1 can be prevented.

  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 container body 2 has a circular cross section, but may have an elliptical cross section or an angular cross section as long as it has a bottomed cylindrical shape. At this time, the shape of the lid 3 may be appropriately changed in accordance with the shape of the container body 2.

  Moreover, in the said embodiment, the structure which attached the cover body 3 to the container body 2 so that attachment or detachment was possible by engaging the engagement convex part 3c of the cover body 3 with the flange part 2c of the container body 2. However, the present invention is not limited to this case. For example, the lid 3 may be detachably attached by screwing the lid 3 to the container 2.

Moreover, in the said embodiment, although the discharge | release hole 10 was formed in the center of the top plate 3a, the position of the discharge | release hole 10 is not restricted to a center, You may form in any position of the top plate 3a. The number of discharge holes 10 is not limited to one, and a plurality of discharge holes 10 may be formed.
However, when one discharge hole 10 is formed, it is preferable to form the discharge hole 10 at the center of the top plate 3a as described above. In this way, a sufficient distance between the discharge hole 10 and the outlet 12 can be secured, and the flow passage 13 is formed between the two regardless of where the outlet 12 is formed on the outer edge of the sheet body 4. Therefore, the degree of freedom in designing the flow passage 13 can be improved.

Moreover, the pattern of the convex part 11 is not limited to the said embodiment, A design change can be suitably carried out according to the objective. In particular, the flow passage 13 is preferably formed so as to guide the gas G to the outlet 12 while changing the flow direction of the gas G at least once.
For example, as shown in FIG. 5, arc-shaped convex portions 20 extending in the circumferential direction may be formed, and the convex portions 20 may be regularly arranged in the circumferential direction and the radial direction to form the flow passage 21. In FIG. 5, the sheet body 4 is shown in a transparent state.
Even in this case, the flow direction of the gas G from the discharge hole 10 toward the outlet 12 can be changed while being sequentially repeated in the radially outer direction and the circumferential direction. Therefore, even in this case, the same effects can be obtained.
At this time, as shown in FIG. 5, four outlets 12 may be formed along the outer periphery of the sheet body 4 at equal intervals (90 degrees around the central axis O). Thus, by forming a plurality of outlets 12, the gas G can be discharged from these outlets 12 evenly and efficiently. Therefore, even when the internal pressure increases rapidly, the pressure can be released out of the container 1 while suppressing fluctuations in the internal pressure as much as possible.

  When a plurality of outlets 12 are formed, the number of outlets 12 is not limited to four, and may be two or three, or five or more. However, as the number of outlets 12 is larger, the sealing performance of the sheet body 4 is inferior.

Moreover, as shown in FIG. 6, the convex part 30 may be formed so that the flow path 31 is formed by the linear path 31a extending in the radial direction and the circumferential path 31b extending in the circumferential direction. In FIG. 6, the sheet body 4 is shown in a transparent state.
Even in this case, since the flow direction of the gas G discharged from the discharge hole 10 can be guided to the outlet 12 at least once, the pressure is released to the outside of the container 1 while suppressing the fluctuation of the internal pressure. be able to. Accordingly, similar effects can be achieved.

  Moreover, a convex part is not restricted to the protruding item | line connected to the bank shape, The shape which protruded locally may be sufficient. Even in this case, it is possible to form a flow path that leads to the outlet 12 while changing the flow direction of the gas G at least once.

  Furthermore, an annular wall portion surrounding the periphery of the discharge hole 10 may be formed on the top plate 3a, and a convex portion may be formed on the radially outer side of the wall portion. That is, you may form the flow path containing a convex part on the radial direction outer side of a wall part. In this case, after the gas G discharged from the discharge hole 10 gets over the wall portion, the gas G flows into the flow passage and is guided to the outlet by the flow passage. In particular, in this case, since the flow of the gas G can be effectively suppressed by the wall portion, the speed of the gas G can be reduced before reaching the flow path, and the fluctuation of the internal pressure is further suppressed. Is possible.

G ... Gas W ... Contents 1 ... Container 2 ... Container body 3 ... Lid 3a ... Top plate 4 ... Sheet body 4a ... Non-seal part 10 ... Release hole 11, 20, 30 ... Convex part 12 ... Outlet port 13, 21 , 31 ... flow passage

Claims (3)

A container body that is formed in a bottomed cylindrical shape and contains contents therein;
A lid having a top plate formed with a discharge hole for releasing gas, and detachably attached to the opening of the container body;
A plurality of convex portions formed by printing on the top plate;
It is overlapped on the top plate so as to cover the discharge hole and the plurality of convex portions, and more radially outward than the outermost convex portion located on the outer edge side of the top plate among the plurality of convex portions. An outer edge portion located at a position along the outer periphery of the top plate, and a sheet body,
The outermost convex portion is a circumferential wall of a ridge extending in the circumferential direction, a pair of outflow walls that are continuous with the circumferential wall so as to face each other at an interval in the circumferential direction, and extend radially outward. With
A non-seal portion in which the seal is partially released in a region sandwiched between the pair of outflow walls is formed on the outer edge portion of the sheet body, and the non-seal portion and the top plate are discharged. Defining an outlet for the gas to flow out;
The plurality of convex portions, the sheet body, and the top plate define a flow passage that guides the gas released from the discharge hole to the outlet .
The said flow path guides to the said outflow port, changing the flow direction of the said gas discharge | released from the said discharge hole at least once . The container according to claim 1 ,
The said discharge hole is formed in the approximate center of the said top plate, The container characterized by the above-mentioned. The container according to claim 1 or 2 ,
A plurality of the outlets are formed along the outer periphery of the sheet body.

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