JP5700163B1 - Heat seal container, food in heat seal container, and heat seal container manufacturing apparatus - Google Patents

Abstract

A lid can be resealed after opening at low cost. A heat seal container 10 includes a container body 20 having a flange portion 23 projecting outward from an upper end portion of a housing portion for housing an object to be packaged, and a lid that covers the housing portion and is thermally welded to the flange portion 23. A body 30. The flange portion 23 is formed with a cut 27 that can separate the inner peripheral side and the outer peripheral side of the container body 20. The notch 27 of the flange part 23 has a protruding notch part 28, and the notch part 28 is formed with engagement pieces 29 </ b> A and 29 </ b> B on both sides of the notch part 27. The engagement pieces 29 </ b> A and 29 </ b> B are separated by cutting the notch 27, and the lid 30 is opened from the container body 20. At the time of resealing, the container body 20 is covered with the lid 30, the other engagement piece 29B is placed on one engagement piece 29A, and when the engagement piece 29A is pressed, the engagement piece 29A disengages the engagement piece 29B. Ride over and engage to reseal the lid 30 to the container body 20. [Selection] Figure 6

Description

  The present invention relates to a heat sealing container, a food containing a heat sealing container, and a manufacturing apparatus for a heat sealing container, in which a film-like lid is thermally welded to an opening of a container main body that accommodates an item to be packaged.

When storing food or the like, a sealed container is widely used in order to prevent the juice or liquid of the food stored from the unopened container from leaking. The sealed container is attached to the opening of the container main body that accommodates the packaged object by heat-sealing a lid that closes the opening in a sealed state.
As one type of such a sealed container, there is a heat seal container in which a film-like lid is thermally welded around the opening of the container body. In such a heat-sealed container, in a state where an article to be packaged is accommodated in the container body, the opening is covered with a film-like lid, and the outer peripheral portion of the opening and the lid are heat-welded. When opening the container, the outer periphery of the lid is grasped and peeled off from the container body. Thereby, a container main body and a cover body fracture | rupture in the part welded thermally, and a container can be opened.

  Patent Document 1 discloses a configuration of a container in which a flange portion with perforations is formed around the opening of a container body, and a lid is put on the flange portion and thermally welded. And the structure which cuts | disconnects a flange part along this perforation at the time of opening, and opens the flange part and lid body of the outer peripheral side of a perforation is integrated is disclosed.

  Patent Document 2 discloses a simple peel in which cuts are formed in an inner layer and an outer layer along a flange portion on the outer peripheral side of an opening of a container body formed by laminating a multilayer film composed of inner and outer layers on a film-like lid. Containers have been proposed. When opening the container, the multilayer film is peeled off along the inner layer and outer layer incisions of the flange part, and the flange part of the container body is cut integrally with the cover body, so that the cover part of the flange part is attached. A configuration that can be opened is disclosed.

Japanese Patent No. 5082008 Japanese Patent Publication No. 5-67508

  However, depending on the type of package, gas (for example, nitrogen, carbon dioxide (carbon dioxide), oxygen, or a mixture thereof) may be filled. However, in conventional heat seal containers, the sealing performance is low and the flange portion is not filled. The gas filled from the perforation may leak. In addition, after the lid was opened, the heat-welded part was peeled off, so that the lid could not be resealed (reclosed). Therefore, it is troublesome for the user to save the packaged item such as food left uneaten after opening the heat-sealed container, because it takes time to move the packaged item to another container. Another problem was that another container had to be cleaned after use.

  In addition, the lid can be closed by adhering the lid to the flange portion of the container body. However, if the juice or liquid such as food contained in the container adheres to the adhesive portion, the adhesiveness is increased. It has the disadvantage of being easily damaged and unsanitary.

  The present invention has been made in view of such circumstances, and is a low-cost, high-sealing container after heat-sealing, and a heat-sealing container and heat that can reliably re-seal the lid after opening It is an object of the present invention to provide a food product in a sealed container and a manufacturing apparatus for a heat sealed container.

The heat seal container according to the present invention includes a container body having an accommodating portion that opens upward and accommodates an object to be packaged, and a flange portion that projects from an upper end portion of the accommodating portion to the outer peripheral side, A heat seal container provided with a lid thermally welded to a flange portion, wherein a bulge portion is formed in the flange portion so as to be curved downwardly in a semicircular cross section, and substantially in the center of the bulge portion. a cut and detachable to the inner peripheral side and the outer periphery side of the container main body formed to a, the inner and outer peripheries of the engaging piece engageable with each other by separating the cut in the bulge portion When re-sealing, the inner and outer engagement pieces separated by the notch are brought into contact with each other up and down so that they are engaged with each other by changing the vertical position. and characterized in that so as to That.
According to the present invention, the sealing property of the container after heat sealing is high, and leakage of gas (for example, nitrogen, carbon dioxide (carbon dioxide), oxygen, or a mixture thereof) filled according to the type of packaged object, It is possible to prevent liquid leakage, etc. from the packaged items contained therein, and when opening a sealed container, the bulging part of the flange part along the notch and the inner peripheral side and outer peripheral side of the container main body together with the lid Disconnect. Then, the outer peripheral side of the flange part and the lid body are opened as a single body, and it becomes possible to take out the article to be packaged in the accommodating part of the container body through the opening. In order to close the lid again after opening, the inner peripheral side and the outer peripheral side engagement pieces formed on both sides are engaged with each other by closing the opening of the container body with the lid and sandwiching the cut. Thereby, the lid can be resealed to the container body.

In the heat seal container according to the present invention, one or a plurality of the engaging portions may be formed in a part of the flange portion in the circumferential direction.
The container body can be resealed by covering the lid and engaging one or more engaging portions.

Moreover, in the heat seal container by this invention, you may make it have a part in which the notch | incision is not formed in a part of the circumferential direction of a flange part.
Even if the flange part is separated into the inner peripheral side and the outer peripheral side at the notch part and the cover body is opened by leaving a part that does not form a cut in the circumferential part of the flange part, the cover body and the flange part are It will be in the state connected with the container main body in the part in which the notch | incision is not formed. Accordingly, the portion where the lid is connected to the container body is caused to function like a hinge, the lid is easily opened and closed, and the lid is not separated from the container body.

Further, in the heat seal container according to the present invention, the flange portion is formed along the outer peripheral edge portion of the housing portion and protrudes toward the lid body, and is formed along the outer peripheral side of the protrusion portion. A recessed groove portion that is recessed downward is formed, and a bulging portion including the cut and the engaging portion may be formed in the recessed groove portion.
In this way, by forming the ridge portion on the outer peripheral edge portion of the housing portion, it is possible to prevent the liquid of the object contained in the housing portion of the container main body from spilling, and to separate the lid at the concave groove portion. Resealing can be repeated.

In the heat-sealed container according to the present invention, a reinforcing part that suppresses deformation of the side part may be formed on the side part of the container main body.
As a result, even when a load is applied to the container main body when the lid is opened or when the lid is resealed, the outer peripheral side surface of the container main body is prevented from being deformed, and the engagement portion is engaged / disengaged. be able to.

A heat-sealed container manufacturing apparatus according to the present invention is any one of the above-described heat-sealed container manufacturing apparatuses, a means for supplying a container main body in which an article to be packaged is accommodated, and a supplied container main body And a means for arranging the lid so as to close the housing portion and a means for thermally welding the lid body to the flange portion of the outer peripheral portion of the housing portion.
According to the present invention, a container body provided with a flange portion, a notch, and an engaging portion is supplied, and an object to be stored is accommodated in the container body, covered with a lid, and thermally sealed to the flange portion. Heat seal containers can be manufactured. And it can reseal with an engaging part, even after cut | disconnecting a cover body and cut | disconnecting from a container main body.

Further, the food in a heat-sealed container according to the present invention includes a container main body having an accommodating portion that opens upward and accommodates food as an article to be packaged, a flange portion that projects from the upper end of the accommodating portion to the outer peripheral side, and an accommodating portion. A swelled portion that is heat- sealed in a heat-sealed container , and has a bulging portion that is curved in a substantially semicircular cross section toward the lower side in the flange portion , and a bulging portion An incision formed at substantially the center of the container body so as to be separable into an inner peripheral side and an outer peripheral side of the container main body, and an engagement between the inner peripheral side and the outer peripheral side that can be engaged with each other by separating the cut at the bulging portion Engaging portions that form pieces, and at the time of resealing, the engaging pieces on the inner peripheral side and the outer peripheral side separated by the notch are brought into contact with each other in the vertical direction so as to switch the upper and lower positions to each other. this was so as to engage The features.
Heat-sealing containers food product according to the present invention, after removal of the food a notch formed in the flange portion is separated cut open, to encapsulate the remaining food in the container body, covered with a lid at the opening of the container body Then, it can be resealed by engaging the engagement pieces on the inner peripheral side and the outer peripheral side of the flange portion. And at the time of reuse, the lid can be opened again by separating the engagement pieces of the flange portion, and the food remaining in the container body can be taken out.

  According to the heat sealing container, the food in the heat sealing container, and the manufacturing apparatus for the heat sealing container according to the present invention, the container after heat sealing is high in low cost and simple configuration, and the lid is opened. Later, the lid of the heat seal container can be easily and reliably resealed by the engaging portion. Moreover, the lid body which can be resealed is realizable by forming an engaging part in a flange part, and it is not necessary to prepare another lid body.

It is a perspective view showing the whole heat seal container composition in a 1st embodiment of the present invention. It is an AA line longitudinal cross-sectional view of the heat seal container shown in FIG. It is the B section expanded sectional view of the flange part shown in FIG. It is a bottom view of a heat seal container in a 1st embodiment of the present invention. FIG. 5 is a cross-sectional view taken along the line CC of FIG. 4 showing the engaging portion of the heat seal container in the first embodiment of the present invention, and (a) is a cross-sectional view showing the engaging portion in a state before cutting is cut. b) is a cross-sectional view showing the engaging portion in a state where the cut is cut off. It is a figure which shows the re-sealing process of the engaging part of a heat seal container in 1st Embodiment of this invention, (a) is the state which the engagement pieces contacted when resealing after opening (B) is sectional drawing which shows the reseal state which engaged the engagement pieces. It is a bottom view which shows the modification of the heat seal container in 1st Embodiment of this invention. The heat seal container in 2nd Embodiment of this invention is shown, and it is the DD sectional view taken on the line of FIG. It is the E section expanded sectional view of the heat seal container shown in FIG. It is a bottom view of a heat seal container in a 2nd embodiment of the present invention. It is the FF sectional view taken on the line of FIG. 10 which shows the engaging part of a heat seal container.

Hereinafter, with reference to an accompanying drawing, the form for carrying out the manufacture device of the heat seal container by the present invention, its food in a container, and a heat seal container is explained.
(First embodiment)
A heat seal container 10 according to a first embodiment of the present invention will be described with reference to FIGS. As shown in FIGS. 1 and 2, the heat seal container 10 according to the present embodiment includes a container main body 20 and a lid 30, and an object such as food is accommodated inside the container main body 20. The lid 30 is sealed by heat welding.

As shown in FIGS. 2 to 4, the container body 20 is made of resin and has, for example, a rectangular shape in plan view. The container main body 20 includes a rectangular bottom plate portion 21, an outer peripheral side surface portion (side surface portion) 22 that rises upward from the entire outer periphery of the bottom plate portion 21, and an outer peripheral side of the container main body 20 from an upper end portion 22 t of the outer peripheral side surface portion 22. And a flange portion 23 that protrudes from the top are integrally formed. The container main body 20 is a bottomed open container opened upward by a bottom plate portion 21 and an outer peripheral side surface portion 22, and an accommodation portion 24 for accommodating an object to be packaged such as food is formed therein.
In addition, on each outer peripheral side surface portion 22 that forms four surfaces, a reinforcing convex portion (reinforcing portion) 22r that protrudes outward from the container body 20 is formed. The reinforcing convex portion 22r is formed so as to protrude in a substantially V-shape or U-shape so that its width gradually increases from the bottom to the top. Due to this reinforcing convex portion 22r, deformation of the outer peripheral side surface portion 22 in the out-of-plane direction is suppressed, and its strength is increased.

In the flange portion 23, a concave groove portion 25 that is continuous in the circumferential direction along the opening of the container body 20 is formed at a position extending from the upper end portion 22 t of the outer peripheral side surface portion 22 to the outer peripheral side. As shown in FIG. 3, the recessed groove portion 25 includes a pair of side wall portions 25 a that extend orthogonally downward from the flange portion 23 in a cross-sectional view, and a bottom plate portion 25 b provided between the pair of side wall portions 25 a and 25 a, The cross section is substantially U-shaped.
Such a recessed groove portion 25 is formed continuously with the flange portion 23 along three sides of the four sides of the substantially rectangular opening of the container body 20 having a rectangular shape in plan view. In addition, the concave groove portion 25 forms a convex ridge portion 26 that protrudes upward on the inner peripheral side of the opening of the container body 20 with respect to the concave groove portion 25 in the flange portion 23.

  Moreover, in the bottom plate part (bottom part) 25b of the groove part 25, a cut 27 is formed in the groove width direction central part along the direction in which the groove part 25 continues, for example. This notch 27 has a perforation having, for example, a V-shaped groove formed in the thickness direction of the bottom plate portion 25b of the concave groove portion 25 or a long slit penetrating the bottom plate portion 25b of the concave groove portion 25 in the thickness direction. A number of cuts are formed at small intervals along the direction in which the groove portions 25 are continuous.

  Further, as shown in FIG. 4, the flange portion 23 is formed with a notch portion 28 including a protruding portion protruding downward in a part of the concave groove portion 25 formed along the three sides of the container body 20. Yes. In this embodiment, the notch part 28 is formed in the center part of the side facing the one side 23z of the flange part 23 in which the concave groove part 25 is not formed.

As shown in FIG. 5A, in the notch portion 28, the bottom plate portion 25b of the concave groove portion 25 is formed with a bulging portion 28b bulging downward in a substantially semicircular cross section. The bulging portion 28 b can be divided into two in the groove width direction of the concave groove portion 25 by the cuts 27. The bulge portion 28b forms engagement pieces (engagement portions) 29A and 29B that can be engaged with each other on one side and the other side of the cut 27 as described later.
As shown in FIG. 5 (b), the engaging pieces 29A and 29B have an L-shaped cross section composed of the side wall portion 25a and the bottom plate portion 25b of the concave groove portion 25, and the outer peripheral portion of the flange portion 23 is outward. By bending, the engaging pieces 29A and 29B can be elastically deformed in a direction in which they are separated from each other.

  The lid 30 is a film made of a heat-weldable resin material. In the flange part 23, it is heat welded to the heat weld part 23n of the outer peripheral side rather than the recessed groove part 25. As shown in FIG. Here, as shown in FIG. 4, a tab portion 23 t that protrudes from one corner of the flange portion 23 to the outer peripheral side is formed, and a tab portion 30 t having the same shape that overlaps the tab portion 23 t is also formed on the lid 30. ing. The tab portions 23t and 30t may be formed at a plurality of corners, or the tab portions 23t and 30t may be formed only on one of the flange portion 23 and the lid 30.

Next, the manufacturing method by the manufacturing apparatus of the heat seal container 10 according to the present embodiment will be described. First, a resin sheet is press-molded on the upstream side of the production line of the heat seal container 10 or the resin sheet is formed into a formwork. The container body 20 is molded by being sucked by a vacuum (suction) device from a suction port provided below the mold. Next, after containing an object to be packaged such as food in the container body 20 in the middle stage of the packaging line, the container body 20 containing the object to be packaged such as food is supplied to the downstream side of the packaging line. A lid 30 made of a resin film is placed so as to close the opening of the housing portion 24.
In addition, in the case of the manufacturing apparatus of the heat seal container 10 that does not include the mechanism for forming the container body 20, the container body 20 in which an article to be packaged such as food is stored is supplied to the downstream side of the packaging line. And a cover 30 (cover film) made of a resin film so as to close the opening of the storage portion 24 of the container main body 20 in which the article to be packaged supplied from the container supply means is stored. It may be.
Next, the heat seal container 10 can be manufactured by heat-welding the lid 30 to the flange portion 23 on the outer peripheral side of the accommodating portion 24 in the container main body 20 by heat welding means. At this time, the top surface of the ridge 26 is also thermally welded to the lid 30. As a result, in the heat seal container 10, the accommodating portion 24 of the container body 20 is hermetically or liquid-tightly sealed by the lid body 30.

Moreover, by thermally welding the film-like lid body 30 to the flange portion 23 of the container body 20, the lid body 30 is thermally contracted and the container body 20 is pulled inward, and the engagement pieces 29 </ b> A and 29 </ b> B of the notch portion 28. They are compressed and in contact with each other, and have high strength.
In addition, when many heat-sealing containers 10 are continuously packaged, it is possible to use, for example, a heat-sealing packaging device disclosed in Japanese Patent Application Laid-Open No. 2012-236615.

In use, in order to open the sealed heat-sealed container 10, the tab body 23 t is grasped while the container body 20 is fixed, and pulled up together with the lid 30. Then, the flange part 23 of the container main body 20 to which the lid body 30 is thermally welded is cut along the cuts 27. Thereby, the cover body 30 opens and it will be in an open state. At this time, as shown in FIG. 5B, the heat welded portion 23 n on the outer peripheral side of the notch 27 in the flange portion 23 is integrated with being welded to the lid body 30. The engagement pieces 29A and 29B are separated from each other by the notch 27 in the notch portion 28.
With the lid 30 opened in this manner, the lid 30 is integrated while being thermally welded to the flange portion 23 of the container body 20 on one side 23z where the notch 27 is not formed. Therefore, even if the lid 30 is opened, the lid 30 is not separated from the container body 20.

  In the state in which the lid 30 is opened, a protruding ridge 26 projecting upward is formed on the outer peripheral edge of the container 24 of the container body 20. Thereby, it is possible to prevent the juice or liquid such as food stored in the storage unit 24 from leaking out of the storage unit 24.

  Next, in order to reseal (reclose) the lid 30 after the lid 30 is opened, the engagement pieces 29A and 29B of the notch portion 28 may be engaged with each other. That is, as shown in FIG. 6A, the opening of the container body 20 is closed by the lid body 30, and the engagement piece 29 </ b> B of the lid body 30 is placed on the engagement piece 29 </ b> A of the container body 20. Next, while pressing the outer peripheral portion of the lid body 30 and the flange portion 23 welded to the lid body 30, the engaging piece 29 </ b> A of the notch portion 28 is pressed upward against 29 </ b> B of the lid body 30. Then, as shown in FIG. 6 (b), the engagement piece 29A gets over the engagement piece 29B and is switched up and down, and the engagement piece 29B on the outer peripheral side is fitted below the engagement piece 29A on the inner peripheral side. The engaging pieces 29A and 29B are engaged with each other. The lid 30 after opening is in a resealed state closed by the container main body 20 by the engaging pieces 29A and 29B engaged with each other.

Thereafter, in order to reopen the lid 30, the flange 23 welded to the lid 30 is opened to the outside, so that the engagement piece of the notch portion 28 of the container body 20 as shown in FIG. Since the other engagement piece 29B of the flange portion 23 welded to the lid 30 is separated to the outside with respect to 29A, the engagement of the engagement pieces 29A and 29B is released. Thereby, the cover body 30 can be resealed.
When the lid 30 is resealed, the engagement piece 29B of the lid 30 is placed under the engagement piece 29A of the container body 20, and the engagement piece 29B is pressed upward against the engagement piece 29A. Then, the engagement pieces 29A and 29B may be engaged and resealed.

As described above, according to the heat seal container 10 according to the present embodiment, when the sealed heat seal container 10 is opened, the flange portion 23 is formed along the notch 27 on the inner peripheral side and the outer peripheral side of the container main body 20. By separating, the lid body 30 can be opened while being integrated with the heat welded portion 23n of the flange portion 23, and the packaged item in the accommodating portion 24 of the container body 20 can be taken out.
In addition, in order to reseal the lid 30 with the food remaining after opening in the container main body 20, the opening of the container main body 20 is closed with the lid 30 and the engagement pieces 29 </ b> A and 29 </ b> B are connected to each other. After making it contact | abut up and down, it can mutually engage and reseal by changing in the up-and-down position by pushing.
Therefore, according to the heat seal container 10 according to the present embodiment, it can be resealed by providing the notch portion 28 in the notch 27 of the flange portion 23 of the container body 20 to form the engagement pieces 29A and 29B. There is no need to prepare a body lid. Therefore, the lid 30 of the heat seal container 10 can be reliably resealed after opening at low cost.

  Moreover, since it was set as the structure which does not form the cut 27 in the circumferential direction part of the flange part 23, even if it cuts off the cover body 30 from the container main body 20 in the part of the cut 27, the part which does not form the cut 27 (side 23z) Thus, the container body 20 is connected. Accordingly, the portion where the lid 30 is connected to the container main body 20 is caused to function like a hinge, the lid 30 can be easily opened and closed, and the lid 30 can be prevented from being separated from the container main body 20. .

In addition, since the ridges 26 are formed on the outer peripheral edge portion of the storage portion 24, the liquid of an object to be stored such as food stored in the storage portion 24 of the container body 20, or a filled gas (for example, nitrogen, Carbon dioxide (carbon dioxide), oxygen, or a mixture thereof can be prevented from spilling (leaking) into the groove 25 and the outside.
Moreover, since the reinforcement convex part 22r was formed in the outer peripheral side surface part 22 of the container main body 20, the intensity | strength of the outer peripheral side surface part 22 improved, even if it applies a load at the time of opening the lid body 30 or resealing the lid body 30 It can suppress that the outer peripheral side surface part 22 of the container main body 20 deform | transforms. Therefore, the opening / closing operation of the lid 30 can be performed easily and reliably.

  In addition, the heat seal container by this invention is not limited to embodiment mentioned above, The structure of the said embodiment can be substituted or changed suitably unless it deviates from the summary of this invention. In the following, modifications and other embodiments of the heat seal container according to the present invention will be described, but the same or similar parts and parts as those of the above-described embodiment will be described using the same symbols.

(Modification of the first embodiment)
In the said 1st Embodiment, although the ditch | groove part 25 and the notch 27 were formed along three sides of the four sides of the container main body 20 of planar view rectangle, it is not restricted to this.
FIG. 7 is a bottom view showing a modification of the heat seal container according to the first embodiment.
As shown in FIG. 7, the groove portion 25, the ridge portion 26, and the notch 27 may be continuously formed over the entire circumference of the flange portion 23 of the container body 20 that is rectangular in plan view.
In the above-described embodiment, the notch portion 28 is provided only at the central portion of one side of the concave groove portion 25, but the present invention is not limited to this. For example, as shown in FIG. 7, notch portions 28 may be provided at each corner of the container body 20.

(Second Embodiment)
Next, a heat seal container 40 according to a second embodiment of the present invention will be described with reference to FIGS.
In the said 1st Embodiment, although the ditch | groove part 25 was formed in the flange part 23, in the heat seal container 40 by this 2nd embodiment, as shown in FIGS. The part 23 was formed in a flat plate shape.

  Moreover, in the heat seal container 40 according to the present embodiment, the flange portion 23 is formed with cuts 37 along the direction in which the flange portion 23 continues. As the cut 37, a perforation having, for example, a V-shaped groove formed in the thickness direction of the flange portion 23 or a slit penetrating the flange portion 23 in the thickness direction is small along the direction in which the flange portion 23 continues. You may form the cut | interruption etc. which form many at intervals.

Moreover, as shown in FIG. 10, in the container main body 50 having a quadrangular cross section, notches 38 are respectively formed in a part of the flanges 23 formed on the four sides. In the example shown in FIG. 10, the notch portion 38 is formed at the center of each of the four sides of the flange portion 23.
As shown in FIG. 11, a bulging portion 38 b bulging downward in a substantially semicircular cross section is formed in the notch portion 38 provided in the flange portion 23 on each side. The bulging portion 38 b can be divided into two in the width direction of the flange portion 23 by the notch 37. The bulging portion 38b constitutes engaging pieces (engaging portions) 39A and 39B that can be engaged with each other on one side and the other side of the cut 27 as described later.

  In order to open the sealed heat seal container 40 according to this embodiment, the tab portion 23t formed on the outer peripheral portion of the flange portion 23 and the tab portion 30t of the lid body 30 are grasped and pulled upward. Then, the flange portion 23 of the container main body 50 is cut along the cut 37. At this time, the heat-welded portion 23 n on the outer peripheral side of the notch 37 in the flange portion 23 is integrated while being welded to the lid body 30. Further, in the notch portion 38, the engagement pieces 39A and 39B are separated by a notch 37.

In order to reseal (reclose) the lid 30 after opening the lid 30, the engagement pieces 39A and 39B of the notch portion 38 are engaged with each other. That is, similar to the reseal step shown in FIG. 6, the lid 30 is closed and the outer engagement piece 39B is placed on the inner engagement piece 39A. Next, when the engagement piece 39A of the notch 38 is pressed upward while pressing the lid 30 and the container main body 50, the inner engagement piece 39A gets over the outer engagement piece 29B and the vertical position is switched. The outer peripheral engagement piece 39B is fitted below the inner peripheral engagement piece 39A, and the engagement pieces 39A and 39B are engaged with each other.
Thereby, the lid 30 after opening can be resealed.

  Thereafter, in order to re-seal the lid 30, if the flange 23 welded to the outer peripheral portion of the lid 30 is opened outward and upward, the outer peripheral engagement piece 39 </ b> B becomes the inner peripheral engagement piece. The engagement pieces 39A and 39B are disengaged from each other apart from 39A. Thereby, the cover body 30 can be resealed.

As described above, according to the heat seal container 40 according to the second embodiment, since the flange portion 23 of the container body 50 has a flat plate shape, heat welding with the film-like lid body 30 at the time of manufacture is more reliably widened. Since it can be performed over the area, it is relatively easy to manufacture and can be sealed with high strength.
Moreover, in order to re-seal after opening, since the flange portion 23 of the container body 50 and the outer peripheral portion of the lid body 30 are both flat, the flange portion 23 and the lid body 30 of the container body 50 can be held with one hand. By sandwiching and pressing the engagement pieces 39A and 39B that are in contact with each other in the vertical position, the vertical positions can be easily switched and engaged to reseal.
Therefore, compared with the said 1st Embodiment, the heat seal container 40 can be manufactured at lower cost, and the operation | work of resealing is still easier.

(Other embodiments)
In addition, the manufacturing apparatus of the heat seal container of this invention, the food with a heat seal container, and a heat seal container is not limited to each above-mentioned embodiment demonstrated with reference to drawings, Various modifications can be considered. .
For example, in each of the above embodiments, the container body 20 has a rectangular shape in plan view, but the shape in plan view is not limited in any way, and may be any shape such as a circular shape in plan view, an elliptical shape, a polygonal shape, etc. It may be.
Moreover, you may set arbitrary numbers about the position of the notch parts 28 and 38, the number of installation, etc. FIG.
Furthermore, although the reinforcement convex part 22r restrained the deformation | transformation to the out-of-plane direction of the outer peripheral side part 22 of the container main body 20, the reinforcement convex part 22r does not necessarily need to be provided.

10, 40 Heat seal container 20, 50 Container body 21 Bottom plate 22 Outer peripheral side (outer peripheral side)
22t Upper end 22r Reinforcement convex part (reinforcement part)
23 flange part 23L edge 24 accommodation part 25 concave groove part 25b bottom plate part (bottom part)
26 ridge 27 cuts 28, 38 notches 29A, 29B, 39A, 39B engaging pieces (engaging portions)
30 lid

Claims (6)

A container main body having an accommodating portion that opens upward and accommodates an article to be packaged, and a flange portion that projects from the upper end of the accommodating portion to the outer peripheral side;
A heat sealing container comprising: a lid body that covers the housing portion and is thermally welded to the flange portion;
A bulging portion that is curved in a substantially semicircular cross section toward the lower side in the flange portion ;
A notch that is formed in the approximate center of the bulging portion and can be separated into an inner peripheral side and an outer peripheral side of the container body;
An engagement portion that forms an engagement piece on an inner peripheral side and an outer peripheral side that can be engaged with each other by separating the cut at the bulging portion ;
When re-sealing, the inner and outer peripheral engagement pieces separated by the notch are brought into contact with each other in the vertical direction so that the vertical positions are switched and engaged with each other. Heat seal container.   2. The heat seal container according to claim 1, wherein one or a plurality of the engaging portions are formed in a part in a circumferential direction of the flange portion.   The heat-sealed container according to claim 1, wherein the flange portion has a portion where the cut is not formed in a part of the circumferential direction of the flange portion. On the flange portion, a ridge portion that is formed along the outer peripheral edge portion of the housing portion and protrudes toward the lid body,
A groove formed along the outer peripheral side of the ridge and recessed downward is formed,
The bulge part provided with the said notch and the said engaging part is formed in the said groove part, The heat seal container as described in any one of Claim 1 to 3 characterized by the above-mentioned. It is a manufacturing apparatus of the heat seal container according to any one of claims 1 to 4,
Means for supplying the container body in which an article to be packaged is stored;
Means for arranging a lid so as to block the accommodating portion of the supplied container body;
Means for heat-welding the lid to the flange portion of the outer periphery of the housing portion;
An apparatus for producing a heat-sealed container, comprising: A container main body having a housing portion that opens upward and contains food as an article to be packaged, and a flange portion that projects from the upper end of the housing portion to the outer peripheral side;
A food sealed in a heat-sealed container comprising: a lid body that plugs the housing portion and is thermally welded to the flange portion;
A bulging portion that is curved in a substantially semicircular cross section toward the lower side in the flange portion ;
A notch that is formed in the approximate center of the bulging portion and can be separated into an inner peripheral side and an outer peripheral side of the container body;
An engagement portion that forms an engagement piece on an inner peripheral side and an outer peripheral side that can be engaged with each other by separating the cut at the bulging portion ;
When re-sealing, the inner and outer peripheral engagement pieces separated by the notch are brought into contact with each other in the vertical direction so that the vertical positions are switched and engaged with each other. Food in heat-sealed containers.

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