JP2015085954A - Inner fitting packaging container with tamper-proof structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an inner fitting packaging container with a tamper-proof structure which can exhibit excellent sealability in the unopened state as well as in resealing, prevent tampering effectively, and is easy to manufacture and handle.SOLUTION: A lid body 2 as a separate component is fitted into a container body 1, and an inner surface of a lid fitting wall part 23 of the lid body 2 is brought into close contact with an inner surface of a body fitting wall part of the container body 1. In a body flange part of the container body 1, a guard wall part 15 standing upward for guarding an outer edge of a lid flange part 24 from the outside is formed over the entire periphery except a passage part 41 so that the lid flange part 24 cannot be picked up. A lid knob piece 25 is extended to the outside through the passage part 41 and overlapped to an upper side of a body knob piece 42, and the body knob piece 42 and lid knob piece 25 are fixed to each other by an adhesive tape 30 that prohibits re-fixing.

Description

  The present invention relates to an internal fitting packaging container of a type in which a lid body is internally fitted to a container main body, and has a structure for preventing unauthorized tampering.

  In a packaging container composed of a container body and a lid formed of a synthetic resin sheet, the lid is fitted inside the container body when the container is covered with the lid to close the opening of the container body. Some have an internal fitting structure in which the closed state is maintained by joining. The thing provided with this inner fitting structure has the advantage that it is easy to reseal even after the lid is opened.

  As for the packaging container having such an internal fitting structure, the following Patent Document 1 has been proposed. The packaging container described in the following Patent Document 1 has a plurality of engaging protrusions protruding inwardly on the inner surface of the opening edge of the container body at intervals in the circumferential direction, and the lid is locked by the engaging protrusions. This is the configuration. However, the lid is configured to be locked by a plurality of engaging protrusions, and the outer surface of the lid and the inner surface of the container main body are not in close contact with each other, so that the sealing and sealing properties are poor. There's a problem.

  Moreover, this packaging container aims at easy opening of a cover body in an internal fitting type. For this reason, a structure is adopted in which a tab horizontally extending outwardly on the outer edge of the lid flange portion of the lid body rises along the inner surface of the container body when the lid body is fitted to the container body. In this way, when the knob piece rises upward, the knob piece can be easily picked and the lid can be easily opened.

  However, in such a packaging container, since the tab is raised upward and can be easily picked and opened, for example, when the packaging container is arranged in a store or the like and displayed on the display, the lid body is intentionally removed from the container body. It is difficult to discover that such unauthorized tampering has occurred if the contents are easily tampered with and the contents are tampered with and then closed again. Moreover, even if it is not intentional, since the knob piece stands up and stands out, there is a possibility that, for example, the knob piece is picked in an interest and the lid body is inadvertently removed.

  Therefore, it is provided with an internal fitting structure excellent in hermetic sealability, and once opened, the trace remains clearly in the packaging container so that it can be easily found. The present applicant has already proposed a packaging container having a tamper-proof structure (Patent Document 2 below).

  In this packaging container, a body-fitting wall portion having a reverse taper shape as a whole is provided around the opening edge of the container body toward the upper side, and the inner surface of the packaging container is a seal surface (fitting surface) over the entire circumference. The cover body is also provided with a reverse-fitting-shaped lid fitting wall portion that faces the outside toward the lower side correspondingly, and the outer surface is configured as a sealing surface over the entire circumference. Yes. Then, when closing the lid, when the lid is pressed downward toward the opening of the container body, the lid fitting wall enters the inside of the body fitting wall of the container body, and the lid fitting wall The outer surface of the container is in close contact with the inner surface of the body fitting wall portion while pressing the inner surface of the body fitting wall portion to the outside, thereby sealing the opening of the container body. Therefore, an excellent hermetic sealability can be obtained. Moreover, since the opening part of a container main body can be sealed again by resealing, even when the accommodated food etc. remain, it can be resealed repeatedly in the state with high sealing performance.

  Further, the container body and the lid body are integrated with each other via a connecting portion, and the connecting portion is provided with an easily breaking portion for dividing the connecting portion, and the easily breaking portion when opening the lid. The container body and the lid body are made discontinuous by breaking, and the lid body is removed from the container body. Therefore, if the easily broken portion is broken by mischief, the fact that the easily broken portion is broken by the broken break can be easily found on the visual level.

  As described above, the packaging container already proposed by the present applicant is excellent in hermetic sealing and can effectively prevent unauthorized tampering. In order to do so, the container body and the lid body are integrally thermoformed through the connecting portion, and then the easily breakable portion is processed in the connecting portion, and then the container body and the lid body in the connected state are formed. It is difficult to punch the sheet from the sheet in a batch, and it is difficult to punch the container body and the lid from the sheet all together without shifting. Special manufacturing equipment was required.

  Furthermore, since an easily breakable portion is provided at the connecting portion that connects the container body and the lid, the easily breakable portion is easily broken when an external force is applied to the container body and the lid. Care must be taken not to break the easily breakable part at times.

  In addition, there also exists a structure which heat-seals a sheet-like cover body to the upper surface of the flange part of a container main body like the container of the following patent document 3. However, although this container can provide high sealing performance when it is not opened, it cannot be resealed once opened, and is not suitable for applications that require high sealing performance even when resealed. is there.

  In the container described in Patent Document 4 below, the peripheral edge of the container main body and the peripheral edge of the lid body are provided with protruding edges that are fitted to each other to seal the opening of the container main body, and the container main body and the lid Each of the body has a configuration in which a knob is provided in a protruding manner. However, since the outer edge of the lid is located on the entire outer periphery of the container body, the lid can be moved upward by hooking the outer edge of the lid with a nail or the like at a place other than the knob. It is also possible to open it by pulling it up, and it is not configured to be opened only from a specific location. Nor can unauthorized tampering be prevented.

JP 2008-24338 A JP 2011-102128 A JP 2013-209145 A Japanese Patent Laid-Open No. 10-264951

  Therefore, the present invention has been made in view of the above-mentioned conventional problems, and it is possible to obtain an excellent hermetic sealing property not only in an unopened state but also in a re-sealing, effectively preventing unauthorized tampering, and manufacturing. Another object of the present invention is to provide an inner fitting packaging container with a tamper-proof structure that is easy to handle.

  The present invention has been made to solve the above-mentioned problem, and the inner fitting packaging container with a tamper-proof structure according to the present invention is a container body thermoformed from a synthetic resin sheet separately from each other, and A container for inner fitting and wrapping, in which the lid is internally fitted to the container body, and the container body has a reverse-tapered body fitting wall portion whose inner circumference is a sealing surface; A main body flange portion formed on the outer side of the main body fitting wall portion; and a main body knob piece extending outward from the outer edge of the main body flange portion. A main body flange portion, comprising: a tapered lid fitting wall portion; a lid flange portion formed on the outside of the lid fitting wall portion; and a lid knob piece extending outward from the outer edge of the lid flange portion. The outer edge of the lid flange part so that the outer edge of the lid flange part cannot be picked up. A guard wall portion that rises upward to guard is formed over the entire circumference except for the passage portion, and the lid knob piece extends outward through the passage portion and overlaps the upper side of the main body knob piece. The body knob piece and the lid knob piece are fixed to each other by fixing means that cannot be fixed again.

  In the inner-fitting wrapping container having this configuration, the container main body and the lid body are configured separately, so that manufacture and handling are easy. Further, an inner fitting structure is employed that includes a reverse-tapered body fitting wall portion whose entire inner circumference is a sealing surface and a reverse-tapered lid fitting wall portion whose outer circumference is a sealing surface. Therefore, the outer surface of the lid fitting wall is in close contact with the inner surface of the body fitting wall and the opening of the container body is sealed, and can be easily resealed even after opening. However, the same high sealing performance as in the unopened state can be obtained.

  The main body flange portion is formed with a guard wall portion around the entire circumference except for the passage portion, and the outer edge of the lid flange portion is guarded from the outside by the guard wall portion. Therefore, even if it is going to pick up the outer edge of a lid flange part in places other than a lid picking piece, it is guarded by a guard wall part and cannot be picked up. In other words, the lid has a structure that can be opened only from a specific portion called a lid knob, and cannot be opened from a location other than the lid knob.

  On the other hand, a main body knob piece is also provided in the container main body, and the lid knob piece extends outward through a passage portion which is a portion where the guard wall portion is not formed, and overlaps the upper side of the main body knob piece. When opening the packaging container, for example, pick the main body with the fingertip of one hand, pick the lid with the other hand, and pull the two up and down to remove the lid from the container main body. However, since the main body knob piece and the lid knob piece are fixed to each other by a fixing means that cannot be re-fixed, they cannot be opened unless both are fixed. Therefore, if the fixing of the main body picking piece and the lid picking piece is released in an attempt to open with mischief, the main body picking piece and the lid picking piece cannot be fixed again, and the opening mark remains clearly in the packaging container. become. That is, the fact that it has been opened can be easily found by the visual level. In particular, since the main knob and the lid knob protrude outside the packaging container and are in a conspicuous state, it is possible to easily visually check whether both are fixed and whether the packaging container has been opened. it can. When the lid is closed, the separate lid is strongly pressed against the container body from above to fit inside, but at that time, the lid is positioned in the circumferential direction with respect to the container body by aligning the lid knob. This can be easily performed, and the main body knob piece and the lid knob piece can be easily overlapped.

  In particular, the fixing means that cannot be re-fixed is preferably an adhesive tape that cannot be re-attached, and the opening tab can be easily fixed to the lid with a simple configuration.

  Further, it is preferable that one of the main body knob piece and the lid knob piece is provided with a protrusion for preventing the close contact between the opposing surfaces toward the other opposing surface. Can be opened by pulling up and down.

  As described above, in the inner-fitting packaging container with a tamper-proof structure according to the present invention, the container main body and the lid body are separate structures, and therefore, manufacture and handling are easy. Moreover, since the outer surface of the lid fitting wall portion of the lid body is in close contact with the inner surface of the main body fitting wall portion of the container main body, it is excellent by resealing not only in an unopened state but also after opening. A hermetic seal is obtained. Therefore, even when the contained food or the like remains, it can be re-sealed and used. Further, the outer edge of the lid flange portion is guarded by the guard wall portion except for the portion of the lid knob piece, so that the lid can be opened only from a specific portion called the lid knob piece, and the lid knob protruding to the side Since the piece and the main body picking piece are fixed to the lid by a fixing means that cannot be re-fixed, in the unlikely event that the main body picking piece and the lid picking piece are released due to mischief, the trace will be clear It remains and can be easily visually confirmed, and therefore tampering can be effectively prevented.

The perspective view which shows the closed state of the container for inner fitting packaging in one Embodiment of this invention. The top view which shows the closed state of the packaging container. (A) is the principal part end view of the location in which the main body pick piece and the lid pick piece are not formed in the packaging container, and (b) is the main pick piece and the lid pick piece formed in the packaging container. It is principal part sectional drawing of the location. It is principal part sectional drawing of the inner fitting packaging container in other embodiment of this invention, Comprising: (a) shows the main body knob piece and the lid knob piece in the state before sticking an adhesive tape, (b) Indicates a main body knob piece and a lid knob piece in a state before opening with an adhesive tape attached.

  Hereinafter, an inner fitting packaging container with a tamper proof structure according to an embodiment of the present invention will be described with reference to FIGS. The inner fitting packaging container in the present embodiment is capable of accommodating various kinds of foodstuffs, and is formed separately from the container body 1 having an opening on the upper surface and the container body 1. And a lid 2 configured to be resealable by internal fitting to the container main body 1 so as to close the opening. Both the container body 1 and the lid body 2 are formed by thermoforming a synthetic resin sheet. Therefore, when a non-foamed sheet is used as the synthetic resin sheet, the inner surface and the outer surface are in principle a front-rear integrated relationship. If the inner surface is convex, the corresponding portion of the outer surface is concave. The foodstuffs to be contained are not particularly limited, but foodstuffs containing moisture such as salads and cut fruits are suitable, and an internal fitting structure is adopted, so that foodstuffs containing liquids such as moisture are contained. However, it is difficult for the liquid to spill on the way home. Moreover, it is suitable also for the use which heat-cooks with a microwave oven as a heat resistant container.

  The container body 1 preferably has a substantially circular shape in plan view, and in the present embodiment, an example of a substantially circular shape in plan view is exemplified. The container main body 1 includes a substantially circular bottom surface (not shown), a main body side wall that rises upward from the periphery of the bottom surface, and a main body flange that extends outward from the upper end of the main body side wall. Part. The bottom surface portion is substantially circular, and the main body side wall portion has a cylindrical shape as the diameter gradually increases upward, but various ribs may be provided on the bottom surface portion and the main body side wall portion. The main body flange portion extends from the upper end of the main body side wall portion to the side, and is formed over the entire circumference.

  A main body fitting wall portion 10 is formed over the entire circumference at the upper end portion of the main body side wall portion. The main body fitting wall portion 10 is formed in a reverse taper shape whose diameter is reduced inward toward the upper side, and a lid fitting wall portion 23 of the lid body 2 described later is fitted therein. In addition, the reverse taper shape should just be diameter-reduced inward toward the upper side as a whole, and may become partially perpendicular | vertical. The main body fitting wall portion 10 becomes a continuous sealing surface that is not interrupted all around the inner surface, and the outer surface of the lid fitting wall portion 23 of the lid body 2 is in close contact therewith. That is, the inner surface of the main body fitting wall portion 10 and the outer surface of the lid fitting wall portion 23 become an annular seal surface. A supporting surface portion 11 extending substantially horizontally from the lower end of the main body fitting wall portion 10 to the inside is formed on the lower side of the main body fitting wall portion 10, and is formed on the lower side of the supporting surface portion 11. The side wall main portion 12 extends downward from the inner edge of the support surface portion 11. A tapered chamfered portion 13 whose diameter increases toward the upper side is formed on the upper side of the main body fitting wall portion 10, and a main body flange portion is extended above the main body fitting wall portion 10 via the chamfered portion 13. It is preferable. That is, it is preferable because the chamfered portion 13 is formed at the boundary portion between the main body fitting wall portion 10 and the main body flange portion, so that the lid body 21 can be easily fitted. Thus, the main body side wall part can be set as the structure provided with the side wall main part 12, the support surface part 11, the main body fitting wall part 10, and the chamfering part 13 in an order from the bottom.

  A guard protrusion 40 is formed on the upper surface of the main body flange portion. The guard protrusion 40 is positioned so as to go around the outer side of the lid flange portion 24 described later, and projects so as to guard the outer edge of the lid flange portion 24 from the outside so that the outer edge of the lid flange portion 24 cannot be picked up. It is installed. The protruding height of the guard protrusion 40 upward is required to be higher than at least the upper surface of the lid flange portion 24. Preferably, even if the packaging container is bent, the lid flange The height of the portion 24 is set so that the outer edge of the portion 24 does not float above the guard protrusion 40. Furthermore, it is preferable that the lid flange portion 24 is fitted inside the guard protrusion 40 without a gap.

  The guard protrusion 40 is formed over the entire circumference except for a part. The portion where the guard protrusion 40 is not formed is a slight part of the entire circumference, and therefore the guard protrusion 40 is generally C-shaped in plan view. A lid knob 25 described later passes through a portion where the guard protrusion 40 is not formed and extends outward. A portion where the guard protrusion 40 is not formed will be referred to as a passage portion 41. The guard ridge 40 is formed on the entire circumference except for the passage portion 41. By providing the passage portion 41 at one place, the guard ridge 40 has a substantially C shape in a plan view, and the guard ridge 40 has a circumferential direction ( A length between the both ends is the passage portion 41.

  The width | variety of the channel | path part 41 shall be a thing which can extend the outer side through the cover knob | piece piece 25 mentioned later through there. Preferably, the width of the passage portion 41 is slightly larger than the width of the lid knob piece 25, and at least the outer edges of the lid flange portion 24 on both the left and right sides of the lid knob piece 25 are picked by inserting fingertips from the passage portion 41. The gap between the end of the guard protrusion 40 and the side edge of the lid knob 25 is small so that it cannot be raised.

  Thus, by providing the guard protrusion 40 on the upper surface of the main body flange portion, the main body flange portion is an area inside the guard protrusion 40 and is guarded from the upper end of the chamfered portion 13 toward the outside. A flange main portion 14 that extends substantially horizontally to the ridge 40, a guard wall portion 15 that rises upward from the outer edge of the flange main portion 14 to form the inner side surface of the guard ridge 40, and an upper end of the guard wall portion 15 For example, a ridge top surface portion 16 that extends substantially horizontally and forms the top surface of the guard ridge 40, and extends downward from the outer edge of the ridge top surface portion 16 to the outside of the guard ridge 40. And a skirt wall portion 17 constituting the side surface.

  The flange main portion 14 is provided to support the lid flange portion 24. The guard wall portion 15 rises to guard the outer edge of the lid flange portion 24, and is preferably configured so that the lid flange portion 24 fits inside. Accordingly, the lower portion 15b of the guard wall portion 15 is slightly larger in diameter than the upper portion 15a, and the upper portion 15a is slightly smaller in diameter than the outer edge of the lid flange portion 24, or the guard wall portion 15 is reduced in diameter toward the upper side. A reverse taper shape is preferred.

  The ridge top surface portion 16 is the highest portion in the container body 1, and it is preferable to form a twill knurled eye or the like for preventing slippage on the upper surface. Although the height of the lower end of the skirt wall part 17 is arbitrary, it is preferable to make it substantially the same height as the flange main part 14.

  In addition, it is preferable that the edge part 18 is extended in the lower end of the skirt wall part 17 toward the outer side. The edge portion 18 is a portion serving as an outer edge of the main body flange portion, and thus constitutes a portion serving as the outermost peripheral edge of the container body 1. It is preferable that the height of the edge portion 18 is substantially constant over the entire circumference. Moreover, it is preferable that the edge part 18 is provided over the perimeter, and the main body flange part can be effectively reinforced by the edge part 18 of the perimeter. The edge portion 18 is preferably provided substantially horizontally. Further, it is preferable to form a concavo-convex shape on the upper surface of the edging portion 18 by performing fine concavo-convex processing and embossing at the same time when the container body 1 is thermoformed. It is preferable to form in a waveform shape such as a trapezoidal wave. For example, by forming ridges and valleys along the inner and outer directions of the container body 1, that is, the width direction of the rim portion 18 alternately and continuously in the circumferential direction on the upper surface of the rim portion 18, an uneven shape is formed on the upper surface of the rim portion 18. Can be formed. The uneven shape on the upper surface of the border 18 can be formed by various knurled eyes such as flat knurled eyes and twill knurled eyes, and particularly formed by twill knurled eyes so as not to slip. Is preferred.

  The end surface of the edge portion 18 is a sheet cutting surface cut by a cutting blade at the time of sheet forming. By forming an uneven shape on the upper surface of the edge portion 18, the upper edge line (upper contour line) of the sheet cutting surface is formed. Corresponding to the uneven shape on the upper surface of the edging portion 18, a wavy shape is formed so as to wave up and down in a side view (or a front view). In this way, the upper edge line of the edge portion 18 has a wave shape when viewed from the side, so that the fingertip that touches the container can be protected and the strength of the edge portion 18, that is, the strength of the sheet edge can be improved. Therefore, it is possible to effectively prevent tearing starting from the outer edge of the edge portion 18. Therefore, it is preferable that the embossed edge portion 18 is formed on the entire circumference of the main body flange portion. The uneven shape on the upper surface of the edge portion 18 may be formed so as to be continuous from the edge portion 18 to the skirt wall portion 17. The lower surface of the edging portion 18 may be a flat surface, but it is preferable to form an uneven shape on the lower surface corresponding to the unevenness of the upper surface.

  And the main body picking piece 42 which will be picked when opening is extended in the predetermined location of the outer edge of a main body flange part toward the outer side. The main body knob 42 is formed at one location corresponding to the passage portion 41 in the entire circumference of the outer edge of the main body flange portion. That is, the main body knob piece 42 is located outside the passage portion 41 and extends from the flange main portion 14 via the passage portion 41. The main body knob 42 is preferably formed at substantially the same height as the flange main portion 14, and preferably constitutes the same plane continuous from the flange main portion 14 via the passage portion 41. The shape, protrusion length, width, and the like of the main body knob 42 are arbitrary, but it is preferable to have the same shape as the lid knob 25 of the lid 2 described later. The main body knob piece 42 may be subjected to various types of anti-slip processing.

  Next, the configuration of the lid body 2 will be described. The lid 2 has a structure that fits inside the container body 1 and has a shape corresponding to the container body 1, that is, a substantially circular shape in plan view. The lid body 2 includes a lid top surface portion 20, a lid side wall portion 21 extending downward from the periphery of the lid top surface portion 20, and a groove bottom portion 22 extending substantially horizontally, for example, outward from the lower end of the lid side wall portion 21. The lid fitting wall portion 23 extending upward from the outer edge of the groove bottom portion 22 and the lid flange portion 24 extending outward from the upper end of the lid fitting wall portion 23 can be provided.

  The lid top surface portion 20 is substantially circular in plan view, and its height is arbitrary. For example, the height of the lid top surface portion 20 may be substantially the same as the lid flange portion 24, or may be lower than the lid flange portion 24. You may make it enlarge the accommodation space of a content. Thus, the configuration of the region inside the lid fitting wall portion 23 is arbitrary, and the lid top surface portion 20 is a flat configuration extending substantially horizontally from the lower end of the lid fitting wall portion 23 toward the inside. May be. In the configuration in which the lid side wall portion 21 is provided, an annular groove portion is formed outside the lid top surface portion 20. An inner side surface of the groove portion is a lid side wall portion 21, an outer side surface of the groove portion is a lid fitting wall portion 23, and a bottom surface of the groove portion is a groove bottom portion 22. The groove bottom 22 preferably contacts the support surface 11 of the container body 1 and is supported thereby.

  The lid fitting wall portion 23 is a portion that is fitted into the main body fitting wall portion 10 of the container main body 1 and is in close contact therewith. The lid fitting wall portion 23 is formed in a reverse taper shape corresponding to the main body fitting wall portion 10 and having a diameter reduced inward and inclined toward the upper side. In addition, the reverse taper shape should just be diameter-reduced inward toward the upper side as a whole, and may become partially perpendicular | vertical. The lid fitting wall portion 23 is a continuous sealing surface that is not interrupted all around the outer surface, and the outer surface of the lid fitting wall portion 23 has a slightly larger diameter than the inner surface of the main body fitting wall portion 10. For this reason, the outer surface of the lid fitting wall portion 23 presses the inner surface of the main body fitting wall portion 10 outward and comes into close contact. The contact between the main body fitting wall 10 and the lid fitting wall 23 may be a line contact that makes contact with a line over the entire circumference, or a surface that makes contact with a belt-like surface over the whole circumference. The contact may be a single contact or a plurality of contacts in the height direction. In any case, the main body fitting wall portion 10 and the lid fitting wall portion 23 are in contact with each other over the entire circumference to form an annular tight seal portion, and the opening of the container main body 1 is sealed by the lid body 2. Is done.

  The lid flange portion 24 is located above and overlaps the flange main portion 14 of the main body flange portion, and is preferably placed on the flange main portion 14 and supported by the flange main portion 14. The lid flange portion 24 has a shape corresponding to the flange main portion 14 in a plan view, and thus has an annular shape with a predetermined width together with the flange main portion 14. It is preferable to provide an uneven pattern for preventing slippage on the upper and lower surfaces of the lid flange portion 24.

  A lid knob 25 is provided at a predetermined position on the entire outer periphery of the lid flange portion 24 so as to extend outward. As described above, the lid knob piece 25 passes through the passage portion 41 of the main body flange portion in the closed state, extends outward, and overlaps the upper side of the main body knob piece 42 positioned outside the passage portion 41; Become. The shape of the lid knob 25 is arbitrary, but is preferably the same shape as the main knob 42. In other words, it is preferable that the main body knob piece 42 and the lid knob piece 25 have the same width, and the distal end of the main body knob piece 42 and the distal end of the lid knob piece 25 are in the same position in the closed state. One of the main body knob 42 and the lid knob 25 may be smaller than the other. Further, similarly to the main body knob piece 42, various kinds of anti-slip processing may be applied to the lid knob piece 25.

  The main body knob piece 42 and the lid knob piece 25 that are overlapped in the vertical direction are fixed to each other by fixing means that cannot be fixed again. The fixing portion is arbitrary, but it is preferable to fix the tip portions of the main body knob piece 42 and the lid knob piece 25 to effectively prevent the two from separating vertically.

  The fixing means is also optional, and may be any adhesive tape, adhesive, or heat seal fixing such as a point seal that cannot be fixed again once it has been released. It is preferable to use an adhesive tape 30 that cannot be attached. As a configuration of the pressure-sensitive adhesive tape 30 that cannot be reattached, a laminated configuration in which a release layer is provided between the sheet base material and the adhesive layer can be representatively used. In this configuration, the pressure-sensitive adhesive tape 30 is attached to the adherend by an adhesive layer made of a pressure-sensitive adhesive on the back surface, but once the pressure-sensitive adhesive tape 30 is peeled from the adherend, the adhesive layer is bonded. The sheet base material and the adhesive layer are separated by peeling with the release layer with a force smaller than the strength. While the adhesive layer remains on the adherend, the sheet base material is separated from the adherend, and thus the adhesive tape 30 cannot be reattached. The release layer is broken in the layer and divided, or remains on the adherend together with the adhesive layer. The release layer can be, for example, a printing layer made of an ultraviolet curable ink, and the release layer may be a layer in which a resin binder and a powder filler are mixed, and further, uniaxial stretching containing an inorganic filler. It may be a thin film such as a polypropylene film.

  The case where the adhesive tape 30 which cannot be reattached is used is shown in FIGS. For example, the adhesive tape 30 can be attached in a folded manner so that the main body tab 42 and the lid tab 25 are sandwiched up and down. . That is, the adhesive tape 30 is folded in two so that one end 30a of the adhesive tape 30 is positioned on the upper surface of the lid knob 25 and the other end 30b of the adhesive tape 30 is positioned on the lower surface of the main knob 42. . Moreover, as shown in FIGS. 1-3, the direction of the adhesive tape 30 can be made into the direction along the extension direction of the main body knob | pick piece 42 and the cover knob | pick piece 25. As shown in FIG. Both end portions 30a, 30b of the adhesive tape 30 face the base end side of the main body knob piece 42 and the lid knob piece 25, that is, the center side of the packaging container, and the folded portion 30c of the adhesive tape 30 is the main body knob piece 42 and the lid knob. If it sticks so that it may be located in the front-end | tip part side of the piece 25, the adhesive tape 30 can be easily attached from the radial direction outer side of the packaging container. The width of the pressure-sensitive adhesive tape 30 is also arbitrary. Preferably, the width of the pressure-sensitive adhesive tape 30 is wider than the width of the main body knob piece 42 and the cover knob piece 25, and a portion where the back surfaces of the double-folded pressure-sensitive adhesive tape 30 are bonded to each other is provided. To. Thus, by providing a portion where the back surfaces of the adhesive tape 30 in a folded state are bonded to each other, a more reliable fixed state can be obtained. However, the width of the adhesive tape 30 may be the same as the widths of the main body knob 42 and the lid knob 25, or conversely, it may be narrower than the main knob 42 and the lid knob 25. Further, even when the width of the adhesive tape 30 is wider than the width of the main body knob piece 42 and the lid knob piece 25, the back surfaces of the adhesive tape 30 are respectively arranged on the left and right sides of the main body knob piece 42 and the lid knob piece 25. It is good also as an aspect which provides the part which the back surfaces of the adhesive tape 30 adhere | attach only in any one of right-and-left both sides other than the aspect which provides the part which adheres.

  In addition, you may stick the adhesive tape 30 along the direction which cross | intersects the extending direction of the main body tab 42 and the lid tab 25. For example, when sticking the adhesive tape 30 along the direction orthogonal to the extending direction of the main body knob piece 42 and the lid knob piece 25, it is attached to one of the left and right sides of the main body knob piece 42 and the lid knob piece 25. The main body knob piece 42 and the lid knob piece 25 are sandwiched and fixed by the adhesive tape 30 so that the folded portion 30c of the adhesive tape 30 is positioned and the both end portions 30a and 30b of the adhesive tape 30 are positioned on the other side.

  FIG. 3B shows a form in which the main body knob piece 42 and the lid knob piece 25 are in close contact with each other. However, the opposing surfaces of the main body knob piece 42 and the lid knob piece 25 are in close contact with each other. You may employ | adopt the structure which prevents. For example, a protrusion may be provided on the upper surface of the main body knob piece 42 or the lower surface of the lid knob piece 25 to prevent the two from sticking to each other. For example, as shown in FIG. 4A, a projection 26 is formed on the lower surface of the lid knob 25 downward, and the projection 26 abuts on the upper surface of the body knob 42 so that the lid knob 25 is removed. You may make it space apart from the piece 42 upwards. Although the formation location of the protrusion 26 is arbitrary, for example, a location slightly distant from the distal end to the proximal end side as shown in FIG. 4 is preferable. If the main body knob piece 42 and the lid knob piece 25 are fixed by the adhesive tape 30, the tip portions of the two can be brought close to each other as shown in FIG. 4B, and the gap between the two is adhered. The cover 30 can be covered and concealed, but if the adhesive tape 30 is removed, the tip of the lid knob 25 is restored and rotated upward with the protrusion 26 as a fulcrum by the retained elasticity of the sheet. ) Again to be separated from the main knob 42 again. If the projection 26 is formed in this way so that a gap is formed between the main body knob piece 42 and the lid knob piece 25, the lid knob piece 25 can be easily separated from the main body knob piece 42 and opened. it can.

  The container body 1 and the lid body 2 as described above are formed by so-called sheet molding. Sheet molding includes, for example, vacuum forming, pressure forming, vacuum pressure forming, double-sided vacuum forming, hot plate forming and the like, and in any case, it is formed by thermoforming a synthetic resin sheet. Here, examples of the synthetic resin sheet include a polyester resin such as polyethylene terephthalate, a styrene resin such as polystyrene, a sheet composed of a polyolefin resin such as polypropylene and polyethylene, and a stretched sheet obtained by stretching these. It is done. In addition, a synthetic resin foam sheet obtained by foaming the above-described synthetic resin, or a laminated sheet obtained by appropriately laminating a synthetic resin film thereon can also be used. A transparent sheet is preferable because the contents are highly visible. Examples of the transparent sheet include a sheet composed of the various synthetic resins described above and a stretched sheet obtained by stretching these. In addition, the synthetic resin sheets used for the container body 1 and the lid body 2 may be the same as or different from each other.

  As described above, the packaging container according to the present embodiment has a separate configuration in which the container body 1 and the lid body 2 are not connected to each other. Therefore, manufacture and transportation are easy, and handling is also possible. Easy. And since the lid fitting wall part 23 of the cover body 2 fits inside the main body fitting wall part 10 of the container main body 1 and adheres over the entire circumference, the opening of the container main body 1 is sealed. High sealing performance can be obtained. In particular, since the packaging container is substantially circular in plan view, a uniform sealing pressure can be obtained over the entire circumference, and high sealing performance can be easily ensured. Further, even after opening, if it is resealed, an excellent hermetic sealability can be obtained again. For example, even when the stored food or the like remains, it can be repeatedly resealed and used. Further, when the lid is closed, the separate lid 2 is strongly pressed against the container main body 1 from above and is fitted inside. At this time, the lid knob piece 25 is aligned with the passage portion 41 so that the lid 2 is attached to the container main body 1. Positioning in the circumferential direction can be easily performed, whereby the main body knob piece 42 and the lid knob piece 25 can be easily overlapped.

  In the closed state, the outer edge of the lid flange portion 24 excluding the lid knob 25 is guarded from the outside by the guard wall portion 15 (guard projection 40), so that the outer edge of the lid flange portion 24 is picked with a fingertip. Even if it is lifted and opened, it is guarded by the guard wall 15 and cannot be picked up. In particular, when the outer edge of the lid flange portion 24 is fitted inside the guard wall portion 15, the lid flange portion in addition to the inner fitting between the main body fitting wall portion 10 and the lid fitting wall portion 23. 24 also has a double internal fitting structure in which it is fitted inside the guard wall 15, so that the closed state becomes even more reliable. As described above, the lid 2 has a structure that can be opened only from a specific portion of the lid knob 25 and cannot be opened from other portions.

  The lid knob 25 extends outwardly through the passage 41 and overlaps the upper side of the main knob 42, and the main knob 42 and the lid knob 25 are fixed to each other by a non-refixable fixing means. Therefore, it cannot be opened unless the fixing is released. Therefore, if the fixing of the main body picking piece 42 and the lid picking piece 25 is released in an attempt to open by mischief, the main body picking piece 42 and the lid picking piece 25 cannot be fixed again, and the packaging container Will leave clear marks of opening. That is, the fact that it has been opened can be easily found by the visual level. In particular, since the main body knob piece 42 and the lid knob piece 25 protrude to the outside of the packaging container and are in a conspicuous state, it is easily visually confirmed whether or not both are fixed and whether the packaging container is opened. And tampering can be effectively prevented. In particular, if the non-refixable adhesive tape 30 is used as a non-refixable fixing means, the lid knob piece 25 and the main body knob piece 42 can be easily fixed without using complicated equipment.

  In addition, you may form in the cover body 2 the vapor | steam discharge part for discharging | emitting a vapor | steam outside at the time of the heating by a microwave oven. The vapor discharge part is preferably provided on the lid top surface part 20, but may be provided on the lid side wall part 21. The configuration of the steam discharge portion is arbitrary, and can be a through-hole or a U-shaped cut, for example.

  In this embodiment, the packaging container is substantially circular in plan view, but may be substantially rectangular in plan view. However, by using a packaging container having a substantially circular shape in plan view, the adhesion force between the body fitting wall 10 and the lid fitting wall 23 is likely to be uniform over the entire circumference in the closed state. High hermetic sealability is obtained.

DESCRIPTION OF SYMBOLS 1 Container main body 2 Lid body 10 Main body fitting wall part 11 Support surface part 12 Side wall main part 13 Chamfering part 14 Flange main part 15 Guard wall part 15a Upper part 15b Lower part 16 Projection top surface part 17 Skirt wall part 18 Edge part 20 Lid surface part 21 Lid side wall part 22 Groove bottom part 23 Lid fitting wall part 24 Lid flange part 25 Lid knob piece 26 Protrusion 30 Adhesive tape (fixing means)
30a One end part 30b The other end part 30c Folding part 40 Guard protrusion 41 Passage part 42 Main body knob

Claims (3)

A container body and a lid body that are thermoformed separately from each other from a synthetic resin sheet, and the lid body is an inner fitting packaging container that is fitted inside the container body,
The container body includes an inverted tapered main body fitting wall portion whose entire inner surface is a sealing surface, a main body flange portion formed outside the main body fitting wall portion, and an outer edge extending from the outer edge of the main body flange portion. A main body knob provided,
The lid includes a reverse taper-shaped lid fitting wall portion whose outer periphery is a sealing surface, a lid flange portion formed outside the lid fitting wall portion, and an outer edge extending from the outer edge of the lid flange portion. Provided with a lid picking piece,
A guard wall that rises upward to guard the outer edge of the lid flange from the outside is formed around the entire circumference of the body flange so that the outer edge of the lid flange cannot be picked up. And
The lid knob piece extends outward through the passage and overlaps the upper side of the main knob piece,
An inner fitting packaging container with a tamper-proof structure, wherein the main body gripping piece and the lid picking piece are fixed to each other by a fixing means that cannot be fixed again.   The inner fitting packaging container with a tamper-proof structure according to claim 1, wherein the fixing means that cannot be re-fixed is an adhesive tape that cannot be re-attached.   The tampering prevention according to claim 1 or 2, wherein one of the main body gripping piece and the lid picking piece is provided with a protrusion for preventing adhesion between the opposing faces of the two facing the other opposing face. Structured inner packaging container.

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