JP2019151337A - Container and container with lid - Google Patents

Abstract

To provide a low-cost lidded container, which enables stable re-sealing, and a container for the use.SOLUTION: A container 15A has a circular inner flange 30, formed as projecting outward from the fringes of the opening 17, a circular outer flange 40, formed as projecting outward from the periphery of the inner flange, and flange joints 50 and 51, connecting the inner flange 30 and the outer flange 40 as breakable in the circumferential direction between the two flanges. When the connection is broken at flange joint 50 and the outer flange 40 is separated from the inner flange 30, at least either of the broken part of the inner flange 30 or the outer flange 40 forms a protrusion so that the inner flange 30 and the outer flange 40 become engageable with each other.SELECTED DRAWING: Figure 3

Description

  The present invention relates to a container and a container with a lid using the same. For example, a container in which an opening for taking in and out contents such as food is formed, and a lid for covering the opening is provided in the container. And a lidded container.

  Various types of containers with lids that can be re-sealed even once opened have been proposed. For example, a lidded container described in Patent Document 1 includes a resin molded body container and a lid made of a resin film. The container has a storage portion having an opening on the upper surface, and a flange portion protruding outward from the upper edge of the storage portion, and the flange portion is provided with a protrusion protruding in the radial direction from the outer peripheral end. ing. An annular frame is attached to the lower surface of the lid, and an engaging claw is provided on the frame from the upper wall facing the lower surface of the lid. The frame is injection-molded integrally with the container, and the lower end of the engaging claw and the protrusion are connected via a film. The lid is thermally bonded to the upper surface of the frame body and the upper surface of the flange portion. When the lid is opened, the lid is peeled off from the flange portion and opened integrally with the frame body. When the lid is closed, the engaging claw elastically deforms in the horizontal direction and engages with the protrusion of the container in the vertical direction. Thereby, the container with a lid after opening can be resealed.

Special table 2014-502588 gazette

  However, according to the lidded container described in Patent Document 1, the engaging claw is elastically deformed in the horizontal direction and engages with the protrusion in the vertical direction. It becomes difficult to engage. If the thickness of the engaging claw is increased in order to solve this problem, the cost of the lidded container is increased.

  This invention is made | formed in view of such a condition, The objective is to provide the container with a lid | cover which can be stably resealed and is low-cost, and its use.

To achieve the above object, the container of the first invention is a container in which an opening is formed,
An annular inner flange portion formed so as to protrude outward from the periphery of the opening;
An annular outer flange portion formed so as to protrude outward from the periphery of the inner flange portion;
A flange connecting portion that connects the inner flange portion and the outer flange portion so as to be breakable along a circumferential direction therebetween,
When the outer flange portion is separated from the inner flange portion by breaking at the flange connecting portion, a protrusion is generated at at least one of the inner flange portion and the outer flange portion, and the inner flange portion And the outer flange portion can be engaged with each other.

  The container of the second invention is the container according to the first invention, wherein a plurality of the flange connecting portions are formed between the inner flange portion and the outer flange portion, and a slit is formed between the flange connecting portions. Is formed along the circumferential direction.

The container of the third invention is the container according to the second invention, wherein the outer peripheral portion of the outer flange portion is positioned above the inner flange portion and can be displaced to the same height as the inner flange portion by elasticity. Yes,
When the outer flange portion is separated from the inner flange portion by breaking at the flange connecting portion, a pair of the inner flange portion and the outer flange portion that can be engaged with each other at portions facing each other through the slit. An engagement piece is formed.

  In the container of the fourth invention according to the second or third invention, the inner flange portion and the outer flange portion have a substantially rectangular shape having a curved corner portion and two linear portions adjacent thereto. The slit is located at one corner of the substantially rectangular shape, and the flange connecting portion is located between the corner and the two straight portions.

  The container of the fifth invention is characterized in that, in the fourth invention, at least the slits located at the corner portions have a wavy shape and are located along a straight line or a curve.

  A container of a sixth invention is the container according to the fourth invention, wherein a plurality of slits having a linear shape or a curved shape are located at least in the corner portion, and the flange connecting portion is provided between the slits located in the corner portion. Is located.

  The container according to a seventh aspect of the present invention is the container according to any one of the fourth to sixth aspects, wherein an opening tab that serves as a knob when separating the outer flange portion from the inner flange portion by breaking at the flange connecting portion. It is provided at a corner where the slit is located.

  The container of the eighth invention is the container according to any one of the fourth to seventh inventions, wherein the slit is located at a diagonal portion of the corner portion where the slit is located, and the diagonal portion and 2 adjacent thereto. The hinge part which consists of the said flange connection part is each located between two linear parts, It is characterized by the above-mentioned.

  A container according to a ninth aspect is the resin molded body according to any one of the first to eighth aspects, wherein the inner flange portion, the outer flange portion, and the flange connecting portion are integrally formed. It is characterized by.

The container of the tenth invention is a container in which an opening is formed,
An annular inner flange portion formed so as to protrude outward from the periphery of the opening;
An annular outer flange portion formed so as to protrude outward from the periphery of the inner flange portion;
A plurality of flange connecting portions that connect the inner flange portion and the outer flange portion so as to be breakable by a plurality of slits formed along a circumferential direction therebetween;
As an integrally formed resin molded body,
The inner flange portion and the outer flange portion form a substantially rectangular shape having curved corner portions, and at least one of the plurality of slits is located at one corner portion of the substantially rectangular shape, Flange connecting portions located at both ends of the slit are arranged symmetrically with respect to the substantially rectangular diagonal line,
An opening tab that serves as a knob for separating the outer flange portion from the inner flange portion by breaking at the flange connecting portion is provided at a corner portion where the slit is located.

A container with a lid of an eleventh invention is a container according to any one of the first to tenth inventions, a lid bonded to the inner flange portion and the outer flange portion so as to cover the opening, With
When the outer flange portion is separated from the inner flange portion due to breakage at the flange connecting portion, the lid is separated from the inner flange portion together with the outer flange portion to be in an opened state.

  According to the present invention, since the inner flange portion and the outer flange portion can be effectively engaged by breaking at the flange connecting portion, the container with a lid that can be stably resealed and is low-cost and the container used therefor Can be realized.

The assembly perspective view which shows schematic structure of the container with a lid | cover of 1st-4th embodiment. The disassembled perspective view which shows schematic structure of the container with a lid | cover of 1st-4th embodiment. The top view which shows the container of 1st Embodiment. The top view which shows the container of 2nd Embodiment. The top view which shows the container of 3rd Embodiment. The top view which shows the container of 4th Embodiment. FIG. 7 is a cross-sectional view taken along line A-A ′ in FIGS. 3 to 6. The expanded sectional view which shows the B section of FIG. The expanded sectional view which shows the lid | cover adhesion state in the B section of FIG. 7, an open state, and a reseal state. The enlarged plan view which shows the specific example of the state before and behind opening of the opening tab vicinity in 1st Embodiment. The enlarged plan view which shows the specific example of the state before and behind opening of the opening tab vicinity in 2nd Embodiment. The enlarged plan view which shows the specific example of the state before and behind opening of the opening tab vicinity in 3rd Embodiment. The enlarged plan view which shows the specific example of the state before and behind the opening tab vicinity in 4th Embodiment. The expanded sectional view which shows the specific example of the lid | cover adhesion state of the opening tab vicinity in the 1st-4th embodiment, an opening state, and a resealed state.

  Hereinafter, a container according to an embodiment of the present invention, a container with a lid using the same, and the like will be described with reference to the drawings. In addition, the same code | symbol is mutually attached | subjected to the part which is the same in each embodiment etc., and the corresponding part, and duplication description is abbreviate | omitted suitably.

  The assembly perspective view of FIG. 1 and the exploded perspective view of FIG. 2 show a schematic configuration of the lidded container 10 according to the first to fourth embodiments. As shown in FIG. 2, the container 10 with a lid includes a container 15 in which an opening 17 for taking in and out contents is formed, and a lid 20 for covering the opening 17. The container 15 has a storage portion 16 in which contents are stored, an annular inner flange portion 30 formed so as to protrude outward from the periphery of the opening portion 17, and an outer periphery protruding from the periphery of the inner flange portion 30. And an annular outer flange portion 40 formed on the surface. The contents to be stored in the storage unit 16 are not particularly limited, and examples thereof include solid and semi-solid foods such as sugar beet, confectionery, nuts, dried fruits, and miso.

  The container 15 is a resin molded body made of a thermoplastic resin such as polypropylene (PP), and is formed thin by a molding method such as injection molding or vacuum molding. The lid 20 is made of a resin film and has a thermal adhesive layer on one side. The lid 20 is thermally bonded to the entire upper surfaces of the inner flange portion 30 and the outer flange portion 40 by the thermal bonding layer. Therefore, the storage part 16 containing the contents can be sealed by thermally bonding the lid 20 to the inner flange part 30 and the outer flange part 40. The lid 20 is not limited to a resin film, and may be a multilayer base material in which layers made of paper, metal foil or the like are combined, and an adhesive may be used in place of the thermal adhesive layer. Moreover, when a gas barrier property is required, an aluminum foil layer or a vapor deposition film layer may be provided as an intermediate layer of the lid 20.

  The opening 17, the inner flange portion 30, and the outer flange portion 40 have a substantially rectangular shape having a curved corner portion and two linear portions adjacent to the corner portion (here, a substantially square shape is assumed). , They are almost similar to each other. An opening tab 41 serving as a knob at the time of opening is formed at one corner portion so as to protrude outward from the edge of the outer flange portion 40. Since the lid 20 is thermally bonded also to the opening tab 41, when the outer flange portion 40 is separated from the inner flange portion 30 with the opening tab 41 together with the lid 20, the lidded container 10 is in an opened state, which will be described later.

  3 to 6 show containers 15A to 15D according to the first to fourth embodiments. A cross-sectional view taken along line A-A ′ of FIGS. 3 to 6 is shown in FIG. 7, and a portion B of FIG. 7 is enlarged and shown in FIG. 8. The containers 15A to 15D shown in FIGS. 3 to 8 show the container 15 shown in FIGS. 1 and 2 in detail. That is, the container 15 described above is an outline of the configuration common to the containers 15A to 15D.

  As shown in FIGS. 3 to 6, the storage portion 16 of the containers 15 </ b> A to 15 </ b> D has a bottom wall 18 formed in a substantially rectangular shape that is substantially similar to the opening 17. In the center of the bottom wall 18, as shown in FIG. 7, a substantially rectangular protruding portion 19 protruding upward (on the opening 17 side) is formed to improve the strength of the storage portion 16.

  As shown in FIGS. 3 to 6, the containers 15 </ b> A to 15 </ b> D include a plurality of slits 60 </ b> A to 60 </ b> D and 61 to 63 and a plurality of flange coupling portions 50 to 50 between the inner flange portion 30 and the outer flange portion 40. 52 are formed. That is, the containers 15A to 15D have the inner flange portion 30, the outer flange portion 40, and the flange connecting portions 50 to 52 as integrally formed resin molded bodies.

  A plurality of slits 60A to 60D, 61 are formed along the circumferential direction between the flange connecting portions 50, 51. Thereby, the flange connection parts 50 and 51 are the states which connect the inner flange part 30 and the outer flange part 40 so that fracture | rupture is possible along the circumferential direction between them. Further, the flange connecting portion 52 constitutes a hinge portion described later by the slit 62 and the slits 63 cut.

  The containers 15A and 15B are each provided with two flange connection portions 50, and the containers 15C and 15D are each provided with four flange connection portions 50. In the containers 15A to 15D, four flange connecting portions 51 are provided. The container 15A is provided with one slit 60A, and the container 15B is provided with one slit 60B. The container 15C is provided with three slits 60C, and the container 15D is provided with three slits 60D. In the containers 15A to 15D, six slits 61 are provided, and one slit 62 is provided. Further, in the containers 15A to 15D, two flange connecting portions 52 that constitute the hinge portion are provided, and four slits 63 that constitute the flange connecting portion 52 are provided. In any of the containers 15A to 15D, the slits 60A to 60D, 61 to 63 and the flange connecting portions 50 to 52 are symmetrical with respect to the diagonal line DL passing through the opening tab 41 in the substantially rectangular inner flange portion 30 and outer flange portion 40. Has been placed.

  The flange connection portions 50 to 52 are provided at both ends of the slits 60 </ b> A to 60 </ b> D, 61, and 62. For example, the slits 60 </ b> A to 60 </ b> D are located at one of the substantially rectangular corner portions formed by the inner flange portion 30 and the outer flange portion 40, and the flange connection is made between the corner portion and two adjacent linear portions. The part 50 is located. In the containers 15C and 15D, in the slits 60C and 60D positioned at one of the substantially rectangular corner portions, the flange connecting portion 50 is also positioned between the slits 60C and 60D. That is, the flange connection part 50 is located at both ends of the slits 60A to 60D. On the other hand, the slit 62 is located at the diagonal part of the slits 60A to 60D, and the flange connecting part 52 constituting the hinge part is located between the diagonal part and the two linear parts adjacent thereto. Yes.

  As shown in FIG. 8, a recess 35 is formed by the outer peripheral portion of the inner flange portion 30 and the inner peripheral portion of the outer flange portion 40. As shown in FIGS. 3 to 6, slits 60 </ b> A to 60 </ b> D and 61 to 63 and flange connecting portions 50 to 52 are disposed in the recess 35. On the inner flange portion 30, a protruding portion 31 is formed along the inner periphery of the recess 35 for thermal bonding of the lid 20 and reinforcement of the inner flange portion 30. The protruding portion 31 has a convex shape upward (FIG. 8), and has a rectangular shape similar to the opening 17 (FIGS. 3 to 6). A concave portion 35 is continuously formed on the outer periphery of the protruding portion 31, and an outer peripheral portion of the outer flange portion 40 is continuously formed on the outer periphery of the concave portion 35.

  As shown in FIG. 8, the outer flange portion 40 is inclined so that the outer peripheral portion is positioned upward, and the width W of the concave portion 35 is larger than the depth D (W> D). Since the depth D is small, the recess 35 can be easily formed when the container 15 is molded. In addition, the inclination angle β of the side wall 42 on the outer peripheral side of the recess 35 is larger than the inclination angle γ of the outer peripheral portion of the outer flange portion 40. Accordingly, the outer flange portion 40 can be displaced to the same height as the inner flange portion 30 with moderate elasticity.

  Here, the flange connection part 50 and the slits 60A to 60D that are characteristic of the containers 15A to 15D will be described. As described above, the inner flange portion 30 and the outer flange portion 40 form a substantially rectangular shape having a curved corner portion and two linear portions adjacent to the corner portion. In the substantially rectangular shape, an opening tab 41 is arranged at one of the corner portions of the curved shape, and the slits 60A to 60D are located at the corner portions. And the flange connection part 50 is located at least between the corner | angular part and said two linear part, respectively.

  In the container 15 </ b> A (FIG. 3), the slit 60 </ b> A located at the corner where the unsealing tab 41 is arranged has a wavy shape and is straight (a straight line perpendicular to the diagonal DL passing through the unsealing tab 41). Located along. The flange connecting portion 50 is located on both sides of the slit 60A (that is, between the slit 61). In the container 15B (FIG. 4), the slit 60B located at the corner where the unsealing tab 41 is disposed has a wavy shape and is positioned along a curve. The flange connecting portion 50 is located on both sides of the slit 60B (that is, between the slit 61).

  In the container 15C (FIG. 5), three slits 60C having a linear shape (a linear shape perpendicular to the diagonal line DL passing through the opening tab 41) are positioned at the corner portion where the opening tab 41 is disposed, The flange connecting portion 50 is located on both sides of the three slits 60A (that is, between the slits 61) and between the slits 60C. In the container 15D (FIG. 6), three slits 60D having a curved shape are located at the corner where the opening tab 41 is disposed, and both sides of the three slits 60D (that is, between the slits 61). And the flange connection part 50 is located between slits 60D.

  The slits 60 </ b> A to 60 </ b> D are formed in a wavy line shape or a straight line shape by cutting the resin sheets constituting the containers 15 </ b> A to 15 </ b> D with one or a plurality of wave blades or straight blades. And the flange connection part 50 located in the both sides of slit 60A-60D is formed by the blade stopper at the time of making a cut in a resin sheet. The slits 61 to 63 are also formed by cutting with a blade corresponding to each shape, and the flange connecting portions 51 and 52 are formed by the blade stopper at that time.

  As described above, the opening tab 41 serving as a knob at the time of opening is formed on the outer flange portion 40 at the corner portion where the slits 60A to 60D are located. The flange connecting portions 50 and 51 are formed to have a circumferential length that can be broken by manual separation. On the other hand, since the flange connection part 52 located near the diagonal of the opening tab 41 has a larger circumferential length (interval between the slits 63) than the flange connection parts 50 and 51, it is difficult to break by manual separation. It has become. Therefore, when the flange connecting portions 50 and 51 are broken with the opening tab 41, the separation of the outer flange portion 40 from the inner flange portion 30 can be easily stopped by the flange connecting portion 52.

  The lid 20 and the outer flange portion 40 can be opened and closed by turning with the flange connecting portion 52 as a hinge portion, and the inner flange portion 30 is in an opened state by locking the outer flange portion 40 at the slit 62 portion. Holding is possible. At this time, since the flange connecting portion 52 is easily plastically deformed even when twisted, the unsealed state is stably maintained. Thereby, high convenience can be obtained.

  The slit 63 forming the flange coupling portion 52 is bent inward from one end of the slits 61 and 62 and extends substantially perpendicular to the diagonal line DL passing through the opening tab 41. That is, the two opposing slits 63 are arranged substantially parallel to each other, and an angle α at which the slit 63 intersects the slit 62 is formed at an acute angle. By forming the angle α at an acute angle so that the four slits 63 approach each other in parallel, the flange connecting portion 52 can be twisted more easily.

  Four ribs 32 are provided between the two flange connecting portions 52. The rib 32 opens to the upper surface side (the lid 20 side) of the inner flange portion 30 and protrudes to the back surface side thereof. Further, the planar shape of the rib 32 is formed as an ellipse whose longitudinal direction is arranged in a direction toward the approximate center of the container 15 (a direction parallel to the diagonal line DL). By providing the rib 32 having such a shape, the outer flange portion 40 and the concave portion 35 are hardly elastically deformed in the vertical direction. For this reason, it is possible to prevent the flange connecting portion 52 from being lowered due to the elasticity of the concave portion 35 at the time of opening, and to reliably twist the flange connecting portion 52 as a hinge portion.

  In FIG. 9, the cover adhesion state (sealed state), the unsealed state, and the resealed state in part B of FIG. 7 are shown in an enlarged manner. In FIG. 9, (A) shows the container 10 with the lid in which the lid 20 is thermally bonded to the containers 15A to 15D, (B) shows the container 10 with the lid in the opened state, and (C). Shows the re-sealed container 10 with a lid.

  Since the containers 15A to 15D are formed thin, the outer peripheral portion of the outer flange portion 40 is positioned above the inner flange portion 30 (FIG. 8) and is displaced to the same height as the inner flange portion 30 due to elasticity. It is possible (FIG. 9A). When the lid 20 is disposed on the container 15 so as to cover the opening 17 and heated while pressing the lid 20 so that the outer flange portion 40 and the inner flange portion 30 are at the same height, the thermal adhesive layer of the lid 20 As shown in FIG. 9A, the lid 20 is thermally bonded to the protruding portion 31 of the inner flange portion 30 and the outer peripheral portion of the outer flange portion 40 at the bonding portions 34 and 44. Thereby, the storage part 16 containing the contents is in a sealed state, and the lid 20 is held in a state of being biased upward by the outer flange part 40. Although the thermal adhesive layer is provided on the entire lower surface of the lid 20, only the adhesive portions 34 and 44 which are thermal adhesive portions are shown in FIG.

  When the opening tab 41 (FIGS. 1 to 6) of the container 10 with a lid (FIGS. 1 and 9A) is pinched and pulled, the flange connecting portion 50 between the slits 60 </ b> A to 60 </ b> D and 61 (FIGS. 3 to 6). , 51 are broken, and the adhesive portion 34 (FIG. 9A) is peeled off, and the lidded container 10 is opened (FIG. 9B). In other words, the outer flange portion 40 is opened integrally with the lid 20, and the unsealed state in which the flange connecting portion 52 can be rotated using the hinge portion 52 is maintained. As a result, the contents in the storage unit 16 can be taken out. It is preferable that the diagonal line DL direction passing through the opening tab 41 is the opening direction. If the opening tab 41 is pulled along the diagonal line DL passing through the opening tab 41, stable opening can be performed.

  When the outer flange portion 40 is separated from the inner flange portion 30 by breaking at the flange connecting portions 50 and 51 (FIGS. 3 to 6), the engaging pieces 33 and 43 are moved as shown in FIG. It is formed. 9B shows the AA ′ line cross section (FIGS. 3 to 6) of the slit 61, but the engagement pieces 33 and 43 having the same cross section are also formed in the slits 60A to 60D as will be described later. Formed (FIGS. 10 to 13). That is, the inner flange portion 30 and the outer flange portion 40 form a pair of engagement pieces 33 and 43 that can be engaged with each other at portions facing each other through the slits 60A to 60D and 61 (FIG. 9B). At this time, the urging force of the outer flange portion 40 is released, and the tip of the engagement piece 43 is displaced to the inner peripheral side. Although the engagement piece 43 rotates around the inner peripheral end of the outer flange portion 40, since the depth D (FIG. 8) of the recess 35 is small, the displacement amount of the engagement piece 43 in the horizontal direction is also small. .

  When the outer tab 40 and the lid 20 are closed again by pinching the opening tab 41, the engagement piece 43 is elastically deformed in the vertical direction as shown in FIG. Engage with 33 in the vertical direction. Thereby, since the lid | cover 20 and the outer flange part 40 are hold | maintained at the inner flange part 30, the reseal of the container 10 with a lid | cover is achieved. Even if the containers 15 </ b> A to 15 </ b> D are formed thin, the inner flange portion 30 and the outer flange portion 40 can be engaged at the time of resealing, so that resealing at a low cost can be realized. Further, although the engagement piece 43 is loosely locked to the engagement piece 33, such loose locking may be a problem if the contents do not need to be sealed (lightweight, solid, semi-solid, etc.). Reseal without any possible.

  In the containers 15A and 15B (FIGS. 3 and 4), since the slits 60A and 60B have a wavy line shape, the engagement pieces 33 and 43 formed by breaking at the flange connecting portion 50 also have a wavy line shape. become. At the time of resealing, a slight misalignment occurs in the lateral relative position between the inner flange portion 30 and the outer flange portion 40. Therefore, the corrugated peak portions of the engagement pieces 33 and 43 are engaged with each other in the vertical direction. Become. Accordingly, the engagement pieces 33 and 43 can be more reliably and stably re-sealed.

  When performing opening after resealing, the opening tab 41 may be pinched and pulled in the same manner as when opening. Since the engaging pieces 33 and 43 are positioned symmetrically with respect to the diagonal line DL passing through the opening tab 41, if the opening tab 41 is pulled along the diagonal line DL, the opening after resealing is performed more stably. It is possible. As described above, since the horizontal displacement of the engagement piece 43 is small, the engagement width between the engagement piece 43 and the engagement piece 33 is small. Therefore, opening after resealing can be easily performed. Moreover, since the recessed part 35 is shallow (W> D), the engagement width of the engagement piece 43 and the engagement piece 33 can be made small at the time of resealing. Therefore, similarly to the above, it is possible to easily perform opening after resealing.

  10 to 13 show enlarged specific examples of the state before and after opening in the vicinity of the opening tab 41 in the first to fourth embodiments. 10 to 13, (A) shows the inner flange portion 30 and the outer flange portion 40 in a state where the lid 20 is thermally bonded to the containers 15A to 15D (sealed state), and (B) to (D). Shows the inner flange portion 30 and the outer flange portion 40 in an opened state. When the opening tab 41 shown in (A) is pulled to break the flange connecting portion 50, as shown in (B) to (D), it protrudes into at least one of the inner flange portion 30 and the outer flange portion 40. 53 and 54 are generated. At this time, as described above, a pair of engaging pieces 33 and 43 that can be engaged with each other are also formed at portions facing each other through the slits 60A to 60D.

  When the flange connecting part 50 is broken, the state of the broken part is divided into three types shown in (B) to (D). 10 to 13, in the case of (B), a protrusion 53 is generated at the broken portion of the inner flange portion 30, and a protrusion 54 is generated at the broken portion of the outer flange portion 40, and in the case of (C), the inner flange portion is formed. In the case of (D), the notch 55 and the outer flange portion 40 are formed in the broken portion of the inner flange portion 30. Protrusions 54 are generated at the broken portions.

  In any of the types (B) to (D) in FIG. 10 to FIG. 13, the formed protrusions 53 and 54 facilitate the engagement between the inner flange portion 30 and the outer flange portion 40, and thus more stable. Can be resealed. As the engagement between the inner flange portion 30 and the outer flange portion 40, for example, the engagement (B) between the projection 53 and the projection 54, the engagement (B, C) between the projection 53 and the engagement piece 43, and the projection 54, for example. And engagement (B, D) with the engagement piece 33.

  In the containers 15 </ b> A and 15 </ b> B (FIGS. 10 and 11), the slits 60 </ b> A and 60 </ b> B have a wavy shape, and thus the protrusions 53 and 54 are easily engaged with the engagement pieces 33 and 43. Further, in the containers 15C and 15D (FIGS. 12 and 13), since a plurality of flange connection portions 50 are provided, the engagement with the engagement pieces 33 and 43 is facilitated by the generated protrusions 53 and 54. . Therefore, in both cases, more stable resealing is possible.

  The flange connecting portions 50 located at both ends of the slits 60 </ b> A to 60 </ b> D are arranged symmetrically with respect to the diagonal line DL (FIGS. 3 to 6) passing through the opening tab 41. In this arrangement, if the unsealing tab 41 is pulled along the diagonal line DL, the forces applied to the flange connecting portions 50 are equalized, so that the protrusions 53 and 54 are likely to occur. As a result, the engagement is facilitated by a slight shift in the lateral relative position between the inner flange portion 30 and the outer flange portion 40. For the same reason, it is preferable that the flange connecting portions 50 are arranged in a direction perpendicular to the diagonal line DL as in the containers 15A to 15C. Further, when the flange connecting portion 50 is positioned at both ends of the slits 60A and 60C extending in the direction perpendicular to the diagonal line DL passing through the opening tab 41, the protrusions 53 and 54 are easily caught on the engaging pieces 33 and 43. , More stable re-sealing becomes possible.

  The width of the flange connecting portion 50 (in other words, the distance between the blade stoppers) is preferably 0.5 to 0.8 mm. By forming the flange connecting portion 50 with a width of 0.5 to 0.8 mm, the protrusions 53 and 54 in which the ease of engagement and the ease of opening are balanced are easily generated.

  Polypropylene is preferable as the material for the containers 15A to 15D. When polypropylene is used, there is a merit that the protrusions 53 and 54 are likely to be generated at the time of breakage, and the flange connecting portion 52 easily functions as a hinge portion. Examples of the material on which the protrusions 53 and 54 are likely to occur include a multilayer sheet (PP / EVOH / PP) when barrier properties are required, and A-PET (unstretched amorphous PET) when transparency is required. Is mentioned.

  FIG. 14 is an enlarged view of a specific example of the lid adhering state (sealed state), the opened state, and the resealed state in the vicinity of the opening tab 41 in the first to fourth embodiments, similar to FIG. In FIG. 14, (A) shows the container 10 with a lid in which the lid 20 is thermally bonded to the containers 15A to 15D, (B) shows the container 10 with the lid in an opened state, and (C) Shows the re-sealed container 10 with a lid.

  When the opening tab 41 (FIGS. 10 to 13) is pinched and pulled, the flange connecting portion 50 between the slits 60 </ b> A to 60 </ b> D (FIG. 14A) is broken to generate protrusions 53 and 54, and the engagement piece 33. , 43 and peeling of the adhesive portion 34 (FIG. 14A) occur, and the lidded container 10 is opened (FIG. 14B). The state of the broken portion of the flange connecting portion 50 is the type of (B) in FIGS. 10 to 13, and a protrusion 53 is generated at the broken portion of the inner flange portion 30, and the broken portion of the outer flange portion 40 is A protrusion 54 is generated.

  When the outer tab 40 and the lid 20 are closed again by pinching the opening tab 41, the engagement piece 43 is elastically deformed in the vertical direction as shown in FIG. Engage with 33 in the vertical direction. At this time, not only the engagement between the engagement piece 33 and the engagement piece 43, but also the engagement between the protrusion 53 and the protrusion 54, the engagement between the protrusion 53 and the engagement piece 43, and the protrusion 54 and the engagement piece 33 Can also be engaged. Thereby, the more stable reseal becomes possible.

  According to each embodiment described above, when the outer flange portion 40 is separated from the inner flange portion 30 by the breakage at the flange connecting portion 50, at least one of the inner flange portion 30 and the outer flange portion 40 is broken. Protrusions 53 and 54 are formed on the inner flange 30, thereby enabling effective engagement between the inner flange portion 30 and the outer flange portion 40. Therefore, by using the containers 15A to 15D, it is possible to realize a low-cost container 10 with a lid that can be stably resealed.

DESCRIPTION OF SYMBOLS 10 Container with lid | cover 15,15A-15D Container 16 Storage part 17 Opening part 18 Bottom wall 19 Projection part 20 Lid 30 Inner flange part 31 Projection part 32 Rib 33 Engagement piece 34 Adhesion part 35 Concave part 40 Outer flange part 41 Opening tab 42 Side wall 43 Engagement piece 44 Adhesion part 50-52 Flange connection part 53, 54 Protrusion 55, 56 Notch 60A-60D, 61-63 Slit DL Diagonal line

Claims (11)

A container having an opening formed therein,
An annular inner flange portion formed so as to protrude outward from the periphery of the opening;
An annular outer flange portion formed so as to protrude outward from the periphery of the inner flange portion;
A flange connecting portion that connects the inner flange portion and the outer flange portion so as to be breakable along a circumferential direction therebetween,
When the outer flange portion is separated from the inner flange portion by breaking at the flange connecting portion, a protrusion is generated at at least one of the inner flange portion and the outer flange portion, and the inner flange portion And the outer flange portion can be engaged with each other.   A plurality of the flange connecting portions are formed between the inner flange portion and the outer flange portion, and a slit is formed along the circumferential direction between the flange connecting portions. The container according to claim 1. The outer peripheral portion of the outer flange portion is located above the inner flange portion, and can be displaced to the same height as the inner flange portion by elasticity,
When the outer flange portion is separated from the inner flange portion by breaking at the flange connecting portion, a pair of the inner flange portion and the outer flange portion that can be engaged with each other at portions facing each other through the slit. The container according to claim 2, wherein an engagement piece is formed.   The inner flange portion and the outer flange portion form a substantially rectangular shape having a curved corner portion and two linear portions adjacent to the corner portion, and the slit is located at one corner portion of the substantially rectangular shape. The container according to claim 2 or 3, wherein the flange connecting portion is located between the corner portion and the two straight portions.   The container according to claim 4, wherein at least the slits located at the corner portions have a wavy shape and are located along a straight line or a curved line.   The container according to claim 4, wherein a plurality of slits having a linear shape or a curved shape are located at least in the corner portion, and the flange connecting portion is located between the slits located in the corner portion.   The opening tab used as a knob at the time of isolate | separating the said outer flange part from the said inner flange part by the fracture | rupture in the said flange connection part is provided in the corner | angular part in which the said slit is located. The container according to any one of 6.   The slit is also located at the diagonal portion of the corner portion where the slit is located, and the hinge portion comprising the flange connecting portion is located between the diagonal portion and two adjacent linear portions. The container according to any one of claims 4 to 7.   The container according to any one of claims 1 to 8, wherein the container is a resin molded body in which the inner flange portion, the outer flange portion, and the flange connecting portion are integrally formed. A container having an opening formed therein,
An annular inner flange portion formed so as to protrude outward from the periphery of the opening;
An annular outer flange portion formed so as to protrude outward from the periphery of the inner flange portion;
A plurality of flange connecting portions that connect the inner flange portion and the outer flange portion so as to be breakable by a plurality of slits formed along a circumferential direction therebetween;
As an integrally formed resin molded body,
The inner flange portion and the outer flange portion form a substantially rectangular shape having curved corner portions, and at least one of the plurality of slits is located at one corner portion of the substantially rectangular shape, Flange connecting portions located at both ends of the slit are arranged symmetrically with respect to the substantially rectangular diagonal line,
An opening tab serving as a knob for separating the outer flange portion from the inner flange portion by breaking at the flange connecting portion is provided at a corner portion where the slit is located. A container according to any one of claims 1 to 10, and a lid bonded to the inner flange portion and the outer flange portion so as to cover the opening,
The lid is separated from the inner flange portion together with the outer flange portion when the outer flange portion is separated from the inner flange portion by breaking at the flange connecting portion, and the lid is opened. Attached container.

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