JP7079421B2 - Reclosed container and its manufacturing method - Google Patents

Description

The present embodiment relates to a reclosed container and a method for manufacturing the same.

Conventionally, for example, a sealed container manufactured by heat-sealing the opening of a sheet-molded container body with a lid material is known (see Patent Documents 1 and 2). In such a sealed container, the lid material is peeled off from the container body when the container is opened, so that the peeling strength of the lid material is stabilized and the opening is facilitated.

Japanese Patent No. 5082008 Special Fair 5-67508 Gazette

However, in a conventional sealed container, once the lid material heat-sealed in the container body is opened, the container body cannot be resealed using this lid material in general. For this reason, conventionally, when a sealed container is opened, the contents inside the container body are transferred to another container, or the container body is covered with a wrap or the like to protect the remaining contents, which is troublesome. Is on.

The present disclosure has been made in consideration of such a point, and an object of the present invention is to provide a reclosed container and a method for manufacturing the same, which are easy to open and can be resealed.

The reclosed container according to the present embodiment is a reclosed container, which is a bottom portion, a body portion provided on the bottom portion, a flange portion provided around the body portion, and a lid sealed to the flange portion. The flange portion comprises an inner flange portion, an outer flange portion, and a convex portion located between the inner flange portion and the outer flange portion. A cut portion and a joint portion are formed along the direction, and the inner flange portion and the outer flange portion are connected by the joint portion, and in the region where the cut portion is formed, the convex portion is an inner convex portion. And the outer convex portion, and at least one of the inner convex portion and the outer convex portion is deformed and engaged with the other.

In the reclosed container according to the present embodiment, the flange portion has an opening region and a hinge region provided at a position facing the opening region, and in the hinge region, the length of the connecting portion is another. It may be longer than the length of the joint.

In the reclosed container according to the present embodiment, the lid material may be sealed with respect to the inner flange portion by an inner sealing portion, and a part of the inner sealing portion may have a crow mouth shape in a plan view.

The method for manufacturing a reclosed container according to the present embodiment is a method for manufacturing a reclosed container, which includes a step of preparing a sheet, a bottom portion by molding the sheet, and a body portion provided on the bottom portion. By forming a flange portion provided around the body portion, forming a convex portion on the flange portion, and partially cutting the convex portion, the convex portion is formed along the circumferential direction. A step of forming a notch and a joint and separating the convex portion into an inner convex portion and an outer convex portion, a lid material is sealed to the flange portion, and the convex portion is crimped to form the notch portion. In the region where the is formed, at least one of the inner convex portion and the outer convex portion separated from each other is deformed and engaged with the other.

According to the present embodiment, the reclosed container can be resealed while having an easy-opening property.

FIG. 1 is a perspective view showing a reclosed container according to an embodiment. 2 (a) and 2 (b) are partially enlarged views of FIG. FIG. 3 is a plan view showing a reclosed container according to an embodiment. FIG. 4 is a cross-sectional view showing a reclosed container according to an embodiment (FIG. IV-IV cross-sectional view of FIG. 3). FIG. 5 is a partially enlarged cross-sectional view (VV line cross-sectional view of FIG. 3) showing a reclosed container according to an embodiment. 6 (a)-(e) are views showing a method of manufacturing a reclosed container according to an embodiment. 7 (a) and 7 (b) are views showing a method of manufacturing a reclosed container according to an embodiment. FIG. 8 is a diagram showing a process of sealing the lid material to the flange portion and crimping the convex portion. 9 (a)-(c) are views showing the operation of the reclosed container. FIG. 10 is a partially enlarged cross-sectional view showing a modified example (modified example 1) of the reclosed container. FIG. 11 is a partially enlarged cross-sectional view showing a modified example (modified example 2) of the reclosed container. FIG. 12 is a partially enlarged cross-sectional view showing a modified example (modified example 3) of the reclosed container. FIG. 13 is a plan view showing a modified example (modified example 4) of the reclosed container.

Hereinafter, one embodiment will be described with reference to the drawings. 1 to 9 are diagrams showing one embodiment.

First, the outline of the reclosed container according to the present embodiment will be described with reference to FIGS. 1 to 5. In the present specification, "upper" and "lower" mean upper and lower parts of the reclosed container 10 in a state where the bottom portion 20 is directed downward in the vertical direction (FIGS. 1 and 3), respectively.

The reclosed container 10 shown in FIGS. 1 to 5 stores the contents C (see FIGS. 6 and 7) as described later, and after taking out the stored contents C, it is resealed (reclosed) by the lid material 50. ) It is possible. Such a reclosed container 10 includes a bottom portion 20, a body portion 25 provided on the bottom portion 20, a flange portion 30 provided around the body portion 25, and a lid material 50 sealed to the flange portion 30. I have. Of these, the bottom portion 20, the body portion 25, and the flange portion 30 constitute a container body 15 integrally molded into a sheet.

The bottom portion 20 has a central bottom portion 21 and a grounding portion 22 located around the central bottom portion 21. The central bottom portion 21 is raised above the ground contact portion 22 (on the flange portion 30 side) and has a substantially flat surface. The grounding portion 22 is a surface that is grounded to the horizontal plane when the reclosed container 10 is placed on the horizontal plane. The ground contact portion 22 is formed in an annular shape over the entire circumference around the central bottom portion 21. The outer circumference of the bottom portion 20 has a substantially quadrangular shape in which four corners are rounded in a plan view. Of the four rounded corners having a substantially quadrangular shape, the corner on the opening region 41 side, which will be described later, has a smaller radius of curvature than the other three corners.

The body portion 25 extends vertically between the bottom portion 20 and the flange portion 30, and has a substantially quadrangular horizontal cross section with four rounded corners. An opening 26 for storing and taking out the content C is formed at the upper end of the body portion 25. Further, the body portion 25 has a tubular shape whose width gradually narrows from the flange portion 30 side (upper side) to the bottom portion 20 side (lower side), and the area of the horizontal cross section thereof is from the flange portion 30 side. It gradually becomes smaller toward the bottom 20 side. However, the shape of the body portion 25 is not limited to this, and may have a cylindrical shape such as a cylindrical shape, an elliptical tubular shape, or a polygonal tubular shape. Further, the area of the horizontal cross section of the body portion 25 may be substantially uniform from the flange portion 30 side to the bottom portion 20 side.

A stack rib 27 is provided on the outside of the body portion 25. The stack rib 27 is an upper portion (flange portion 30 side) of the body portion 25, and is formed at each of the four corner portions of the body portion 25. The stack rib 27 is integrally formed with the body portion 25, and projects outward from the outer surface of the body portion 25. The stack rib 27 serves to prevent the container bodies 15 from sticking to each other when a plurality of empty container bodies 15 are stacked, making it difficult to separate the container bodies 15 individually.

The flange portion 30 is formed over the entire peripheral edge of the opening 26 of the body portion 25, and extends horizontally from the upper end of the body portion 25. The flange portion 30 has a substantially quadrangular shape with four rounded corners in a plan view. The flange portion 30 has an inner flange portion 31, an outer flange portion 32, and a convex portion 33 located between the inner flange portion 31 and the outer flange portion 32. The flange portion 30 may be inclined with respect to the horizontal plane.

Further, in the corner portion of the flange portion 30, there are an opening region 41, a hinge region 44 provided at a position facing the opening region 41, and two intermediate regions 42 located between the opening region 41 and the hinge region 44. , 43, respectively. The opening region 41 and the hinge region 44 are respectively located at a pair of corner portions on the diagonal line of the flange portion 30. The two intermediate regions 42 and 43 are located at other pairs of corners on the diagonal of the flange portion 30, respectively.

The opening area 41 is an area that is gripped and opened by the user when the lid material 50 is opened (initial opening, reopening). In the opening region 41, the flange portion 30 is formed in a tab shape, and the width (horizontal distance) thereof is the widest in the flange portion 30. Further, the hinge region 44 is located on the opposite side of the opening region 41 with respect to the body portion 25. The hinge region 44 is a portion that becomes the center of rotation of the lid member 50 in a hinge shape when the lid member 50 is opened and closed. In the hinge region 44, the lid material 50 and the inner flange portion 31 are maintained in a state of being adhered to each other not only before the lid material 50 is initially opened but also after the lid material 50 is initially opened.

The inner flange portion 31 is located inside the flange portion 30 in the plane direction (on the body portion 25 side), and is formed in an annular shape over the entire peripheral edge of the flange portion 30. The inner flange portion 31 is adjacent to the opening 26 on the inner side thereof and adjacent to the convex portion 33 on the outer side thereof.

The inner flange portion 31 is provided with an inner sealing portion 46, and the lid material 50 is sealed to the inner flange portion 31 by the inner sealing portion 46. The inner sealing portion 46 is a sealing portion in which the lid material 50 is peeled off from the inner flange portion 31 when the lid material 50 is initially opened. The inner seal portion 46 is formed in an annular shape over the entire circumference of the inner flange portion 31, and has a substantially quadrangular shape with four corners rounded in a plan view along the opening 26. In the opening region 41, a part of the inner sealing portion 46 protrudes from the inside to the outside in an acute angle shape, and a ruling pen-shaped opening start portion 47 is formed in a plan view. The opening start portion 47 is a portion of the inner sealing portion 46 that is first opened when the lid material 50 is initially opened. Since the opening start portion 47 has a ruling pen shape, when the lid material 50 is initially opened, the user's force is concentrated on the tip of the opening start portion 47, and the lid material 50 can be easily initially opened. can.

The width (horizontal distance) of the inner sealing portion 46 is substantially constant over the entire circumference, and can be appropriately set according to the strength required for the initial opening of the lid material 50. In this case, the width of the inner seal portion 46 is narrower than the width of the outer seal portion 48 described later. Further, the inner seal portion 46 is formed at a distance from both the outer circumference of the opening 26 and the inner circumference of the convex portion 33. As a result, when the lid material 50 is initially opened, the inner seal portion 46 is selectively peeled off, while the outer seal portion 48 is not peeled off, and the lid material 50 is adhered to the outer flange portion 32. maintain. In FIGS. 1 to 3, the inner seal portion 46 is indicated by a alternate long and short dash line.

The outer flange portion 32 is located on the outside of the flange portion 30 (the side far from the body portion 25), and is formed in an annular shape over the entire peripheral edge. The outer flange portion 32 is adjacent to the convex portion 33 on the inner side thereof. The outer circumference of the outer flange portion 32 has a substantially quadrangular shape with four rounded corners in a plan view. Of the four rounded corners having a substantially quadrangular shape, the corner on the opening region 41 side has a smaller radius of curvature than the other three corners. As a result, the area of the outer flange portion 32 is wider on the opening region 41 side than the other regions, making it easier for the user to grip the opening region 41 when opening the lid material 50. Further, on the outer peripheral edge of the outer flange portion 32, a bent portion 34 that bends downward over the entire circumference is formed.

The outer flange portion 32 is provided with an outer seal portion 48, and the lid material 50 is sealed to the outer flange portion 32 by the outer seal portion 48. When the lid material 50 is initially opened, the outer seal portion 48 is separated from the inner flange portion 31 by integrating the lid material 50 and the outer flange portion 32 without peeling from the outer flange portion 32. It is a seal part. The outer seal portion 48 is provided over substantially the entire outer flange portion 32 excluding the bent portion 34. Not limited to this, the outer seal portion 48 may be provided in a part of the outer flange portion 32.

The convex portion 33 is located between the inner flange portion 31 and the outer flange portion 32. The convex portion 33 is formed in a groove shape over the entire peripheral edge of the flange portion 30, and has a substantially quadrangular shape in which four corner portions are rounded in a plan view. The convex portion 33 is adjacent to the inner flange portion 31 on the inner side thereof, and is adjacent to the outer flange portion 32 on the outer side thereof. In this case, the convex portion 33 projects downward (toward the bottom 20 side) and has a substantially semicircular shape in a vertical cross-sectional view. However, the present invention is not limited to this, and the convex portion 33 may protrude upward (opposite the bottom portion 20). Further, the width (horizontal distance) of the convex portion 33 is substantially constant over the entire circumference, but the width of the convex portion 33 is not limited to this, and the width of the convex portion 33 may be different in a part of the circumferential direction.

The convex portion 33 is formed with a plurality of notched portions 35 and a plurality of connecting portions 36, 36a along the circumferential direction. In this case, the cut portion 35 and the connecting portions 36, 36a are formed alternately in the circumferential direction.

The cut portion 35 is a through hole that penetrates the convex portion 33 in the thickness direction (vertical direction), and has an elongated groove shape along the circumferential direction. Further, each cut portion 35 has a longer circumferential length than each of the connecting portions 36 and 36a. Each cut portion 35 is formed in a side of a substantially quadrangle constituting the convex portion 33 and a corner portion of the substantially quadrangle constituting the convex portion 33 (opening region 41, hinge region 44, intermediate region 42, 43), respectively. .. In the present embodiment, the cut portion 35 is located substantially at the center of the convex portion 33 in the width direction.

The connecting portions 36 and 36a are made of small pieces that connect the inner flange portion 31 and the outer flange portion 32 to each other. In the flange portion 30, the inner flange portion 31 and the outer flange portion 32 are connected only by a plurality of connecting portions 36, 36a. Of the plurality of connecting portions 36, 36a, the connecting portion 36 excluding the pair of connecting portions 36a, which will be described later, is destroyed by the user when the lid material 50 is initially opened. As a result, the outer flange portion 32 and the lid member 50 are integrally separated from the inner flange portion 31. The connecting portions 36 and 36a are formed over the entire thickness direction (vertical direction) of the convex portion 33, and are arranged at intervals (cut portions 35) along the circumferential direction. Each connecting portion 36 is arranged on each side of a substantially quadrangle constituting the convex portion 33. Further, the connecting portions 36 and 36a are not formed in the opening region 41 and the intermediate regions 42 and 43 among the substantially quadrangular corner portions constituting the convex portion 33. On the other hand, a pair of connecting portions 36a are provided in the vicinity of the hinge region 44. The length of the pair of connecting portions 36a in the circumferential direction is longer than the length of the other connecting portions 36 in the circumferential direction. By increasing the circumferential length of the connecting portion 36a located in the vicinity of the hinge region 44, when the lid material 50 is initially opened, the pair of connecting portions 36a are not destroyed and serve as a hinge. Fulfill. As a result, the lid material 50 can be rotated around the hinge region 44, and the container body 15 can be reclosed by the lid material 50.

As shown in FIG. 5, in the region where the cut portion 35 is formed, the convex portion 33 is separated into an inner convex portion 37 connected to the inner flange portion 31 and an outer convex portion 38 connected to the outer flange portion 32. ing. Further, the inner convex portion 37 has an outer end portion 37a, and the outer convex portion 38 has an inner end portion 38a. The outer end portion 37a of the inner convex portion 37 faces the inner end portion 38a of the outer convex portion 38.

As shown in FIG. 5, the inner convex portion 37 is deformed and engages with the outer convex portion 38. Specifically, the inner convex portion 37 is crimped upward and crushed in the height direction (vertical direction). On the other hand, the outer convex portion 38 is not crushed and maintains its original shape. Therefore, the height H1 (distance in the vertical direction) of the inner convex portion 37 is lower than the height H2 of the outer convex portion 38. Further, the outer end portion 37a of the inner convex portion 37 has moved to the outside from the original position (the position before being crimped as shown by the virtual line). Therefore, the outer end portion 37a of the inner convex portion 37 overlaps the inner end portion 38a of the outer convex portion 38, and the inner convex portion 37 and the outer convex portion 38 are engaged with each other. Therefore, after the lid material 50 is initially opened, the container body 15 can be resealed by the lid material 50 by re-engaging the inner convex portion 37 and the outer convex portion 38.

In the present embodiment, the inner convex portion 37 is deformed only in the opening region 41 of the convex portions 33. However, the present invention is not limited to this, and the inner convex portion 37 may be deformed over the entire circumference of the convex portion 33, or may be deformed in a part in the circumferential direction. However, in order to facilitate resealing of the container body 15 after the initial opening of the lid material 50, it is preferable that the inner convex portion 37 is deformed at least in the opening region 41. Further, in the present embodiment, the inner convex portion 37 is deformed and engaged with the outer convex portion 38, but the present invention is not limited to this, and at least one of the inner convex portion 37 and the outer convex portion 38 is used. Should be deformed and engaged with the other. Specifically, the outer convex portion 38 may be deformed and engaged with the inner convex portion 37, and both the outer convex portion 38 and the inner convex portion 37 may be deformed and engaged with each other. Is also good.

The lid material 50 covers the opening 26 of the body portion 25 and serves to protect the contents C housed in the container body 15. The lid material 50 is made of a film that can be flexibly deformed, and is adhered to the inner flange portion 31 and the outer flange portion 32 in the inner seal portion 46 and the outer seal portion 48, respectively. Further, the lid material 50 corresponds to the shape of the outer peripheral edge of the flange portion 30, and has a substantially quadrangular shape in which four corner portions are rounded in a plan view. The lid material 50 may have the same planar shape as the outer peripheral edge shape of the flange portion 30, and may have a planar shape slightly larger or smaller than this.

Next, the dimensions of each component of the reclosed container 10 will be described with reference to FIGS. 4 and 5.

As shown in FIG. 4, when the overall width of the reclosed container 10 is W1, the width of the opening 26 is W2, and the overall height of the reclosed container 10 is H3, for example, W1 = 50 mm or more and 200 mm or less, W2. = 40 mm or more and 160 mm or less, H3 = 25 mm or more and 100 mm or less.

When the width of the flange portion 30 is W3, the width of the inner flange portion 31 is W4, the width of the convex portion 33 is W5, and the width of the outer flange portion 32 is W6, for example, W3 = 6 mm or more and 25 mm or less. W4 = 2 mm or more and 8 mm or less, W5 = 2 mm or more and 8 mm or less, and W6 = 2 mm or more and 8 mm or less. Further, when the height of the convex portion 33 is H4, for example, H4 = 0.5 mm or more and 2 mm or less can be set.

As shown in FIG. 5, when the width of the inner seal portion 46 is W7, the thickness of the lid material 50 is T1, and the thickness of the body portion 25 is T2, for example, W7 = 1 mm or more and 4 mm or less, T1 = 20 μm or more and 100 μm. Hereinafter, T2 = 0.3 mm or more and 1.2 mm or less can be set.

Next, the materials of the container body 15 and the lid material 50 will be described.

The container body 15 forms (sheet molding) a single-layer sheet such as a thermoplastic resin such as PP (polypropylene), A-PET (amorphous polyethylene terephthalate), PS (polystyrene) or a multilayer sheet containing a barrier layer such as EVOH. It was produced by this. When the container body 15 is made of a multilayer sheet, the container body 15 is, for example, (i) PP (polypropylene) layer / EVOH layer / PP layer, (ii) PP layer in order from the outer layer side to the inner layer side of the body portion 25. It may have a layer structure such as / EVOH layer / PP layer / Easy peel layer. In this case, the multilayer sheet may be a co-pressed film or a multilayer laminated film. Further, the container body 15 may be (semi) transparent or opaque. Further, the container body 15 may be colored (a colored sheet may be used).

The lid material 50 can be a laminated film composed of at least two layers including a base film and a sealant film. The lid material 50 is, for example, (i) PET (polyethylene terephthalate) layer / ONY (biaxially stretched nylon) layer / easy peel layer, (ii) PET layer / easy peel layer, etc., in order from the outer layer side to the inner layer side. It may have a layer structure. Further, the lid material 50 may be (semi) transparent or opaque.

Next, a method for manufacturing the reclosed container 10 will be described with reference to FIGS. 6 to 8.

First, a plate-shaped single-layer or multi-layer sheet 16 constituting the container body 15 is prepared (FIG. 6A).

Next, the plate-shaped sheet 16 is heated, and the heated sheet 16 is placed on the female mold 61. Next, the sheet 16 is pushed into the female mold 61 to a certain extent using the plug 62, and then the inside of the female mold 61 is evacuated to shape the sheet 16 into the shape of the female mold 61 (FIG. 6 (b). )). By forming the sheet 16 in this way, a container body 15 having a predetermined shape can be obtained. In this case, the container main body 15 has a bottom portion 20, a body portion 25 provided on the bottom portion 20, and a flange portion 30 provided around the body portion 25. The flange portion 30 is formed with a convex portion 33 that projects downward.

Subsequently, by partially cutting the convex portion 33 of the flange portion 30 of the container main body 15 using the cutting tool 63, a plurality of cut portions 35 are formed along the circumferential direction of the convex portion 33 (FIG. 6 (c). )). At this time, connecting portions 36 and 36a are formed between the cut portions 35 adjacent to each other in the circumferential direction. As a result, the convex portion 33 is separated into the inner convex portion 37 and the outer convex portion 38 via the notch portion 35.

Next, the unnecessary margin 64 located around the flange 30 of the container body 15 is cut and removed over the entire circumference (FIG. 6 (d)).

Subsequently, the content C is stored inside the container body 15 (FIG. 6 (e)). Examples of such contents C include lumpy, granular, powdery or liquid foods.

Next, the lid material 50 wound in a roll shape is prepared, and the lid material 50 is unwound from the roll 65. After that, the lid material 50 is sealed to the flange portion 30 of the container body 15 (FIG. 7A). At the same time, the convex portion 33 is crimped, and in the region where the cut portion 35 is formed, the inner convex portion 37 is deformed and engaged with the outer convex portion 38.

During this time, as shown in FIG. 8, the heated seal head 66 located above is lowered, and the flange portion 30 and the lid member 50 are pressed by the bucket 67 and the seal head 66 located below. As a result, the lid material 50 and the inner flange portion 31 are heat-sealed in the inner seal portion 46, and the lid material 50 and the outer flange portion 32 are heat-sealed in the outer seal portion 48. Further, the bucket 67 has a bucket recess 68 at a position corresponding to the outer convex portion 38. The bucket 67 selectively crimps the inner convex portion 37 of the convex portion 33, and the inner convex portion 37 is crushed. On the other hand, since the outer convex portion 38 is housed in the bucket concave portion 68, deformation is avoided. In this way, the inner convex portion 37 is deformed in the upper direction and the outer direction and overlaps with the outer convex portion 38, so that the inner convex portion 37 and the outer convex portion 38 are engaged with each other.

Then, by cutting and removing an unnecessary portion of the lid material 50 located around the flange portion 30, a reclosed container 10 having the container body 15 and the lid material 50 can be obtained (FIG. 7 (b)). The content C is stored in the reclosed container 10.

Next, the operation of the present embodiment having such a configuration will be described with reference to FIGS. 9 (a)-(c).

First, the reclosed container 10 is initially opened. At this time, the user grips the outer flange portion 32 located in the opening region 41 and pulls it upward (FIG. 9A).

At this time, the lid member 50 and the outer flange portion 32 are pulled up integrally, so that the engagement between the outer convex portion 38 and the inner convex portion 37 is released (FIG. 9 (b)). At this time, the inner seal portion 46 is selectively peeled off, and the lid material 50 is removed from the inner flange portion 31. On the other hand, in the outer sealing portion 48, the lid material 50 remains sealed to the outer flange portion 32. As described above, a ruling pen-shaped opening start portion 47 is formed in the inner sealing portion 46 in the opening region 41. As a result, the user's force is concentrated on the tip of the opening start portion 47, and the initial opening of the lid material 50 can be easily started.

Next, by further pulling up the lid member 50 and the outer flange portion 32, the connecting portion 36 of the convex portion 33 is sequentially broken in the circumferential direction, and the outer flange portion 32 is gradually separated from the inner flange portion 31. On the other hand, in the vicinity of the hinge region 44, a pair of long connecting portions 36a are provided. Therefore, the pair of connecting portions 36a are not broken, and the connection between the outer flange portion 32 and the inner flange portion 31 is maintained in the hinge region 44. As a result, in the hinge region 44, the lid material 50 remains in the container body 15, and the lid material 50 is in an open state with respect to the container body 15 centering on the hinge region 44.

Next, the user takes out the content C in the container body 15, and then reseals the container body 15 with the lid material 50. At this time, the user first grips the integrated lid member 50 and the outer flange portion 32, and moves the lid member 50 and the outer flange portion 32 in the direction of closing the opening 26 of the container body 15. As a result, the lid member 50 and the outer flange portion 32 rotate about the hinge region 44. Then, in the opening region 41, the outer convex portion 38 gets over the inner convex portion 37, and the outer convex portion 38 reengages with the inner convex portion 37 (FIG. 9 (c)). As a result, the lid material 50 and the outer flange portion 32 are fitted to the inner flange portion 31, and the lid material 50 is attached so as to cover the container body 15. In this way, the container body 15 is resealed by the lid material 50 to prevent foreign matter and the like from entering the container body 15, and the contents C are protected.

Then, if necessary, the lid material 50 and the outer flange portion 32 are pulled up again to restart the container body 15. In this case, by pulling up the lid member 50 and the outer flange portion 32 as a unit, the engagement between the outer convex portion 38 and the inner convex portion 37 is released, and the lid member 50 and the outer flange portion 32 are centered on the hinge region 44. It rotates and the opening 26 is released. By repeating such operations, the container body 15 can be reopened and reclosed repeatedly.

As described above, according to the present embodiment, in the region where the cut portion 35 is formed, the convex portion 33 is separated into the inner convex portion 37 and the outer convex portion 38, and the inner convex portion 37 is deformed. , Engages with the outer convex portion 38. As a result, the lid material 50 is pulled up to initially open the reclosed container 10, the lid material 50 is closed, and the outer convex portion 38 on the lid material 50 side is engaged with the inner convex portion 37 on the inner flange portion 31 side. , The container body 15 can be resealed. Therefore, even if the content C remains in the container body 15 after the reclosed container 10 is initially opened, the content C in the container body 15 can be transferred to another container, or the container body 15 can be wrapped with a wrap or the like. You can save the trouble of covering. As described above, the reclosed container 10 has an easy-opening property and is easy to reseal.

Further, according to the present embodiment, the flange portion 30 has an opening region 41 and a hinge region 44 provided at a position facing the opening region 41, and the length of the connecting portion 36a in the hinge region 44. Is longer than the length of the other joints 36. As a result, when the lid material 50 is pulled up and the reclosed container 10 is initially opened, the connecting portion 36a is not broken in the hinge region 44, and the lid material 50 can be easily opened and closed around the hinge region 44.

Further, according to the present embodiment, the lid material 50 is sealed with respect to the inner flange portion 31 by the inner sealing portion 46, and a part of the inner sealing portion 46 is the opening start portion 47 having a ruling pen shape in a plan view. It has become. As a result, when the reclosed container 10 is initially opened, the force for pulling up the lid material 50 is concentrated on the tip portion of the ruling pen shape, so that the lid material 50 can be easily peeled off from the inner flange portion 31.

(Modification example)
Next, various modifications of the reclosed container will be described with reference to FIGS. 10 to 13. 10 to 13 are views showing various modifications of the reclosed container. In FIGS. 10 to 13, the same parts are designated by the same reference numerals and detailed description thereof will be omitted.

(Modification 1)
FIG. 10 shows the reclosed container 10A according to the first modification. In FIG. 10, the convex portion 33 of the flange portion 30 is separated into an inner convex portion 37 and an outer convex portion 38, and the inner convex portion 37 is deformed and engaged with the outer convex portion 38. In this case, the width Wa of the inner convex portion 37 is wider than the width Wb of the outer convex portion 38. In this case, since the outer convex portion 38 is large, the inner convex portion 37 on the lid material 50 side is likely to be caught by the outer convex portion 38. As a result, when the container body 15 is resealed by the lid material 50, the inner convex portion 37 can be easily fitted to the outer convex portion 38.

(Modification 2)
FIG. 11 shows the reclosed container 10B according to the modified example 2. In FIG. 11, the convex portion 33 of the flange portion 30 is separated into an inner convex portion 37 and an outer convex portion 38, and both the inner convex portion 37 and the outer convex portion 38 are deformed to form the inner convex portion 37 and the outer convex portion 37. The portions 38 are engaged with each other. In this case, at the time of manufacturing the reclosed container 10, both the inner convex portion 37 and the outer convex portion 38 are crimped by using the bucket 67 having no concave portion formed on the upper surface, and the inner convex portion 37 and the outer convex portion 38 are crushed. As a result, the inner convex portion 37 and the outer convex portion 38 can be engaged with each other.

(Modification 3)
FIG. 12 shows the reclosed container 10C according to the modified example 3. In FIG. 12, the convex portion 33 of the flange portion 30 is separated into an inner convex portion 37 and an outer convex portion 38, and both the inner convex portion 37 and the outer convex portion 38 are deformed to form the inner convex portion 37 and the outer convex portion 37. The portions 38 are engaged with each other. In this case, the height H5 of the convex portion 33 is higher than that of the embodiment shown in FIGS. 1 to 9, and the height H5 of the convex portion 33 is 1. It is 0 times or more, and is, for example, 4 mm or more and 8 mm or less in a crimped state. As described above, since the height of the convex portion 33 is high, when the convex portion 33 is crimped by using the bucket 67, the inner convex portion 37 and the outer convex portion 38 are easily deformed, whereby the inner convex portion is easily deformed. The 37 and the outer convex portion 38 can be more firmly engaged with each other.

(Modification example 4)
FIG. 13 shows the reclosed container 10D according to the modified example 4. In FIG. 13, the bottom portion 20 and the opening portion 26 have a planar circular shape. The horizontal cross section of the body portion 25 has a circular shape, and the diameter thereof gradually decreases from the flange portion 30 toward the bottom portion 20. The flange portion 30 is formed in an annular shape in the intermediate regions 42 and 43 and the hinge region 44. On the other hand, the flange portion 30 is formed in a tab shape in the opening region 41, and its width (horizontal distance) is the widest in the flange portion 30.

It is also possible to appropriately combine a plurality of components disclosed in the above-described embodiments and modifications as necessary. Alternatively, some components may be deleted from all the components shown in the above embodiments and modifications.

10 Reclosed container 15 Container body 20 Bottom 25 Body 26 Opening 30 Flange 31 Inner flange 32 Outer flange 33 Convex 35 Notch 36, 36a Connecting part 37 Inner convex part 38 Outer convex part 41 Opening area 42 Intermediate area 43 Intermediate area 44 Hinge area 46 Inner seal part 47 Opening start part 48 Outer seal part 50 Cover material

Claims (4)

It ’s a reclosed container,
At the bottom,
The body provided on the bottom and the body
A flange portion provided around the body portion and a flange portion
A lid material sealed on the flange portion is provided.
The flange portion has an inner flange portion, an outer flange portion, and a convex portion located between the inner flange portion and the outer flange portion.
A notch and a joint are formed in the convex portion along the circumferential direction, and the inner flange portion and the outer flange portion are connected by the joint portion.
In the region where the notch is formed, the convex portion is separated into an inner convex portion and an outer convex portion, and at least one of the inner convex portion and the outer convex portion is deformed and engaged with the other. And
A reclosed container including a portion in which the height of one of the inner convex portion and the outer convex portion is lower than the height of the other in the state before the initial opening . The flange portion has an opening region and a hinge region provided at a position opposite to the opening region, and in the hinge region, the length of the joint portion is longer than the length of the other joint portion. The reclosed container according to claim 1. The reclosed container according to claim 1 or 2, wherein the lid material is sealed with respect to the inner flange portion by an inner sealing portion, and a part of the inner sealing portion has a crow mouth shape in a plan view. It is a manufacturing method of a reclosed container.
The process of preparing the sheet and
By forming the sheet, a bottom portion, a body portion provided on the bottom portion, and a flange portion provided around the body portion are formed, and a convex portion is formed on the flange portion. ,
By partially cutting the convex portion, a cut portion and a connecting portion are formed in the convex portion along the circumferential direction, and the convex portion is separated into an inner convex portion and an outer convex portion. ,
The lid material is sealed to the flange portion, the convex portion is crimped, and at least one of the inner convex portion and the outer convex portion separated from each other is deformed in the region where the notch portion is formed. With the process of engaging with the other ,
A method for manufacturing a reclosed container, which comprises a portion in which the height of one of the inner convex portion and the outer convex portion is lower than the height of the other in the state before the initial opening .

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