JP2019043554A - Lid structure and packaging container using the same - Google Patents

Abstract

To provide a lid structure capable of being removed with small forth and suppressing reduction of sealability using an inside plug which is not bulky even after removal, and a packaging container using the same.SOLUTION: A lid structure includes an inside plug surrounded by an annular weakened line formed on a container body, and a pull ring attached to an end edge of the inside plug. A first weakened line group composed of a plurality of weakened lines each extending onto the inside plug from a plurality of positions included in one of two divisions of the annular weakened line by a predetermined straight line passing through the pull ring and a second weakened line group composed of a plurality of weakened lines each extending onto the inside plug from a plurality of positions included in the other of the two divisions are formed so that each point where one of the plurality of positions is orthographically projected on a predetermined straight line and each point where the other of the plurality of positions is orthographically projected on the predetermined straight line are alternately arrayed.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a lid structure and a packaging container using the same.

  DESCRIPTION OF RELATED ART The packaging container which impregnates sheet-like contents, such as a face mask and a wet tissue, with liquids, such as a cleaning liquid, a cosmetic liquid, and a chemical | medical solution, and accommodates in a folded state is known. (See Patent Document 1).

  The packaging container disclosed in Patent Document 1 is a container main body having a substantially trapezoidal cross section which is formed of a synthetic resin or the like and which is open at the lower side, and a bottom where the film is fixed to the peripheral edge of the container main body by heat sealing or the like. It is comprised by the wall part and the opening-closing label which closes openably and closably the rectangular long hole-like taking-out mouth formed in the upper wall part of a container main part. The open / close label is made of a single body or a composite of a synthetic resin film, a laminate material in which a synthetic resin film is laminated on an aluminum foil, etc., and can be peeled off to the upper wall through an adhesive applied corresponding to the outer periphery of the outlet. It is stuck.

  In addition, an outlet plug (corresponding to a lid) is known which is attached to the opening of a soft packaging bag capable of containing sheet-like contents such as wet tissue to enable opening and closing of the opening (Patent Document 2) ).

  In the outlet plug disclosed in Patent Document 2, a spiral weakening line is provided in the plug for closing the opening planned portion. The user of the outlet plug can break the weakening line by pulling the pull ring attached to the inner plug, and can remove the inner plug from the outlet plug body.

JP, 2009-078828, A JP 2002-225911 A

  In the packaging container of Patent Document 1, the contents may contain a large amount of liquid such as a cleaning liquid. In such a case, when the contents are taken out, the liquid adheres to the periphery of the take-out port to lower the adhesive strength of the adhesive applied to the outer periphery of the take-out port, and the sealing performance decreases at resealing. was there.

  On the other hand, in the lid structure of Patent Document 2, although the decrease in the sealing property can be suppressed, there is a problem that it is difficult to make the opening large. That is, when a large opening is set in the lid structure of Patent Document 2, a large force is required to break the weakening line, and the removed inside plug spirally extends long and is bulky and difficult to discard. was there.

  The present invention has been made in view of such problems, and it is possible to remove with a small force, and to use a lid part structure that can suppress a drop in sealing performance using an internal plug that does not become bulky even after removal It aims at providing the used packaging container.

  One aspect of the present invention for solving the above-mentioned subject is a lid structure including a inside plug surrounded by an annular weakening line formed in a container body, and a pull ring attached to an end edge of the inside plug. A first weakening line group consisting of a plurality of weakening lines extending respectively on the inner plug from a plurality of positions included in one of the two divisions of the annular weakening line by a predetermined straight line passing through the pull ring; And a second weakening line group consisting of a plurality of weakening lines extending respectively on the inner plug from a plurality of positions included in the plurality of points, each point obtained by orthographically projecting one of the plurality of positions into a predetermined straight line, It is a lid structure which is formed so that each point which carried out orthographic projection of a position on a predetermined straight line may be located in a line by turns.

  Moreover, the other aspect of this invention is a packaging container which has said lid | cover part structure and is integrally formed with the storage structure.

  According to the present invention, it is possible to provide a lid structure that can be removed with a small force and that uses an internal plug that does not become bulky after removal, and that can suppress a reduction in sealing performance, and a packaging container using the same. .

The top view and sectional drawing which show the state which opened the opening-closing body of the packaging container provided with the cover part structure which concerns on one Embodiment of this invention The top view and sectional drawing which show the state which closed the opening-closing body of the packaging container provided with the cover part structure which concerns on one Embodiment of this invention. An enlarged sectional view of a packaging container provided with a lid structure according to an embodiment of the present invention The top view which showed the method of removing an inside stopper from the packaging container provided with the cover part structure which concerns on one Embodiment of this invention The top view and sectional drawing which show the state which closed the opening-closing body of the packaging container provided with the cover part structure which concerns on the modification of this invention.

  The packaging container 100 provided with the cover part structure which concerns on one Embodiment of this invention is demonstrated with reference to FIG. 1, FIG. FIG. 1 shows a plan view (upper view of FIG. 1) of the packaging container 100 with the open / close member 300 opened and a cross-sectional view (lower view of FIG. 1) cut along line A-A '. Moreover, the top view (upper view of FIG. 2) of the packaging container 100 of the state which closed the opening-closing body 300 in FIG. 2 and sectional drawing (lower figure of FIG. 2) cut | disconnected by B-B 'line are shown. In the following description, for the sake of convenience, the vertical direction (vertical direction of the drawing sheet in the lower diagram of FIGS. 1 and 2) when the packaging container 100 is erected is referred to as the vertical direction.

  The packaging container 100 includes a container body 200 and an open / close body 300 connected to the container body 200 by a hinge 210 which is a connecting portion provided on the container body 200. In addition, the container main body 200 and the opening-closing body 300 can be manufactured by integral molding.

<Container body>
The container main body 200 is a container provided with a storage structure for storing contents not shown. As shown to FIG. 1, FIG. 2, the container main body 200 is a box-shaped container provided with an accommodation space inside, and the lower surface is opening. The container body 200 includes, on the upper surface, a hinge 210, a recess 270, an inner plug 230 surrounded by an annular weakening line 220, and an annular wall 250 extending upward from the outer edge of the annular weakening line 220. Ru. The container body 200 can be used, for example, by storing a sheet-like content and a liquid such as a cleaning liquid in a storage space, and sealing a film at the opening of the lower surface.

(Recess)
The recess 270 is a recess in which the opening / closing body 300 substantially overlaps when the opening / closing body 300 is closed. As shown in FIG. 1, the recess 270 is formed by making a part of the upper surface of the container body 200 correspond to the shape of the opening / closing body 300 in a rectangular shape substantially at the center of the upper surface of the container body 200.

(Inside plug)
The inside plug 230 is a member that closes the opening planned portion of the container body 200. As shown in FIG. 1, the inside plug 230 is surrounded by an annular weakening line 220 formed substantially at the center of the recess 270. In the inside plug 230, a pull ring 260 is attached to the end edge of the upper surface through a column, and a weakened line group 240 composed of a plurality of weak lines (first weak line group 241 and second weak line group 242) on the lower surface It is formed.

(Ring weakening line)
The annular weakening line 220 is a weakening line that triggers the removal of the inside plug 230 from the container body 200. As shown in the upper drawing of FIG. 1, the annular weakening line 220 can be provided, for example, by forming an elliptical half cut in the recess 270. The shape of the annular weakening line 220 is not particularly limited as long as it is annular, but in consideration of the ease of taking out the contents and the ease of removal of the inner plug 230, an oval shape including an elliptical shape or a pair of arcs and a pair of straight lines The shape (track shape) or the like is preferable. The half cut of the annular weakening line 220 may be formed on the lower surface or the upper surface of the recess 270 as shown in FIGS. 1 and 2. The thickness of the annular weakening line 220 can be, for example, 0.20 mm or more and 0.30 mm or less

(Weakening line group)
The weakening wire group 240 is provided to reduce the force required to break the annular weakening wire 220 by controlling the posture of the inner plug 230 when the inner plug 230 is removed from the container body 200. The weakening line group 240 is composed of a first weakening line group 241 and a second weakening line group 242. As an example, as shown in the upper drawing of FIG. 1, the weakening wire group 240 has three straight weakening wires extending from the annular weakening wire 220 onto the plug 230 and arranged in a comb shape at predetermined intervals. The first weakening line group 241 and the second weakening line group 242 can be arranged and formed to be engaged with each other. Each of the first weakening line group 241 and the second weakening line group 242 is formed such that one end is in contact with the annular weakening line 220 and the other end is not in contact with the annular weakening line 220.

  The first weakening line group 241 and the second weakening line group 242 are not limited to the form described above. That is, for example, when the inner plug 230 is divided into two halves by an imaginary straight line L passing through the pull ring 260 and the annular weakening line 220 is also divided into two, the first weakening line group 241 becomes an annular weakening line. 220 is composed of a plurality of positions included in one of two divisions into two, and consists of a plurality of weakening lines extending respectively on the inner plug 230, and a plurality of positions of the second weakening line group 242 included in the other divided into two; Each point consists of a plurality of weakening lines extending respectively on the plug 230, and each point obtained by orthographically projecting one of the plurality of positions onto the predetermined straight line L and each point obtained by orthographically projecting the other plurality of positions onto the predetermined straight line L It should just be formed to line up alternately. The thickness of the weakened line group 240 can be, for example, 0.4 mm or more and 0.8 mm or less.

  A gate for resin filling the inner plug 230 having such a weakening wire group 240 may be provided, for example, between the pillar of the pull ring 260 and the weakening wire constituting the weakening wire group 240 closest thereto. it can. The resin filled from the gate can be filled into the plug 230 through between the weakening lines 240 and the annular weakening line 220.

(Annular wall)
The annular wall 250 is a member for contacting and engaging each of the inner ring 310 and the outer ring 320 formed on the opening / closing body 300 to seal the packaging container 100. As shown in FIG. 1 and FIG. 2, the annular wall 250 extends (rises) upward from the outer edge of the annular weakening line 220 and, as an example, is formed in an elliptical shape in plan view. FIG. 3 shows how the annular wall 250 is fitted with the outer ring 320 and the inner ring 310. FIG. 3 is an enlarged sectional view of a portion C of FIG. As shown in FIG. 3, an engagement protrusion 251 that engages with the outer ring 320 protrudes from the upper end outer peripheral surface of the annular wall 250.

<Opening body>
The opening / closing body 300 is a member connected to the container body 200 by the hinge 210 and provided openably / closably with respect to the inner plug 230. As shown in FIGS. 1 and 2, the opening / closing body 300 includes an inner ring 310 and an outer ring 320 extending (drooping) from the surface of the opening / closing body 300 facing the annular wall 250 of the container body 200. As shown in FIG. 3, the packaging container 100 can be sealed by engaging and abutting each of the inner ring 310 and the outer ring 320 with the annular wall 250. At the end opposite to the hinge 210 of the opening / closing body 300, a wave-shaped finger hook portion 330 for opening the opening / closing body 300 is provided. The user of the packaging container 100 places a finger between the concave portion 331 of the finger hook portion 330 and the concave portion 270 of the container main body 200 and then hooks the convex portion 332 of the finger hook portion 330 to open and close the opening / closing body 300. It can be lifted open.

(Inner ring)
The inner ring 310 is formed to abut on the inner circumferential surface of the annular wall 250 in a state in which the opening / closing body 300 is closed. As shown in FIG. 3, with the open / close member 300 closed, the tip of the outer peripheral surface of the inner ring 310 abuts on the inner peripheral surface of the annular wall 250, and the joint of the inner ring 310 with the open / close member 300 The inner ring 310 may be formed so as to expand outward from the surface of the opening / closing body 300 so that a gap is formed in the region surrounded by the annular wall 250.

(Outer ring)
The outer ring 320 is formed to engage with the outer circumferential surface of the annular wall 250 in a predetermined range including at least the opposite side of the hinge 210 with the open / close member 300 closed. As shown in FIG. 3, the outer ring 320 includes an engagement claw 321 protruding from the tip of the inner peripheral surface facing the annular wall 250, and the engagement claw 321 is formed on the outer peripheral surface of the annular wall 250 It engages with the protrusion 251. As shown in the upper view of FIG. 1, the engagement claws 321 are formed in a predetermined range including the opposite side of the hinge 210 of the outer ring 320. By forming the engagement claws 321 in this range, the opening and closing body 300 can be closed while being pulled in the direction opposite to the hinge 210. Therefore, even when the extension direction of the hinge 210 is set to the short direction of the inner plug 230 as in the packaging container 100, the play in the longitudinal direction of the opening / closing body 300 is suppressed to enhance the sealing property. it can.

  As shown in FIG. 3, when the open / close body 300 is closed, the distance D1 from the surface of the open / close body 300 to the position where the inner ring 310 and the annular wall 250 abut is the annular wall 250 from the surface of the open / close body 300 It is preferable to form so that it may become shorter than the distance D2 to the position which the engagement protrusion 251 and the engagement claw 321 of the outer ring 320 engage.

  By setting the heights of the inner ring 310 and the outer ring 320 so as to satisfy the above relationship (distance D1> distance D2), the tip of the annular wall 250 is sandwiched from two positions of different heights. Thereby, the tip of the annular wall 250 can be pressed toward the engagement claw 321 of the outer ring 320. Therefore, the sealing property of the packaging container 100 by the opening and closing body 300 can be enhanced as compared with the case where the tip of the annular wall 250 is sandwiched at the same height.

  Further, by setting the contact position of the inner ring 310 above the engagement position of the outer ring 320, the end of the open / close member 300 opposite to the hinge 210 is lifted upward, The closure 300 can be easily opened by releasing the engagement with the annular wall 250 with a slight force.

  Further, it is preferable that the upper end surface (top surface) of the annular wall 250 be in surface contact with the surface of the opening / closing body 300 in a state where the opening / closing body 300 is closed. By setting the annular wall 250 in this manner, the contact area between the annular wall 250 and the opening / closing body 300 is increased, and the sealing performance is enhanced. In addition, in the space surrounded by the tip of the annular wall 250, the inner ring 310, and the outer ring 320, the liquid contained in the contents forms a coating, and the sealing property can be improved. In order to obtain these effects, the width D3 of the upper end surface of the annular wall 250 is preferably 1 mm or more.

  In addition, when the open / close member 300 is changed from the open state to the closed state, the upper surface of the annular wall 250 is engaged after the engagement claws 321 of the outer ring 320 cross over the engagement projections 251 of the annular wall 250 and are engaged. Is preferably in contact with the surface of the opening / closing body 300 and then the dimensions of each portion are set such that the annular wall 250 and the end of the inner ring 310 abut.

  By setting the dimensions of each part in this manner, after the annular wall 250 is slightly tilted toward the inner ring 310 by the outer ring 320, the inner ring 310 can be made to abut from behind. Thereby, the annular wall 250 can be sandwiched between the inner ring 310 and the outer ring 320 while being elastically deformed by a series of movements. Therefore, it is possible to reliably seal the annular wall 250 with the inner ring 310 and the outer ring 320 while closing the opening / closing body 300 by a simple operation, and to improve the sealing property of the packaging container 100 by the opening / closing body 300.

(How to remove the inside plug)
Next, a method of removing the inner plug 230 will be described with reference to FIG. (A), (b), (c), (d) and (e) of FIG. 4 are partial plan views in which the inside plug 230 of the packaging container 100 is enlarged.

  The user of the packaging container 100 pulls the pull ring 260 attached to the edge of the inner plug 230 toward the other end with a predetermined force as indicated by the white arrow. The direction of this force is substantially the same as the stretching direction of the straight line L.

  Hereinafter, for convenience, the annular weakening line 220 on the left side of the figure is referred to as an annular weakening line 220a, and the annular weakening line 220 on the right side of the figure is referred to as an annular weakening line 220b. Further, the advancing point of the fracture generated in the annular weakening line 220a is referred to as a fractured part 280a, and the advancing point of the fracture generated in the annular weakened line 220b is referred to as a fractured part 280b. The plurality of weakening lines constituting the weakening line group 240 are referred to as a weakening line 240a, a weakening line 240b, a weakening line 240c, a weakening line 240d, a weakening line 240e, and a weakening line 240f from the side close to the pull ring 260.

  First, breakage of the annular weakening line 220 occurs at the end on the pull ring 260 side of the inner plug 230. Then, by further pulling on the pull ring 260, each of the broken portion 280a and the broken portion 280b simultaneously advances on the annular weakening line 220a and the annular weakening line 220b to the vicinity of the weakening line 240a as shown by the black arrows (FIG. 4) (A)).

  When the breaking portion 280b reaches the contact point between the annular weakening line 220b and the weakening line 240a, the inside plug 230 bends upward along the weakening line 240a because the weakening line 240a is formed on the lower surface. In this manner, when the broken portion 280b reaches the weakening line 240a, a force pulling the inner plug 230 from the pull ring 260 acts on the bending of the inner plug 230 along the weakening line 240a and acts on the progress of the broken portion 280b. It becomes difficult. Thereby, the fractured portion 280b once stops traveling at the point of contact with the weakening line 240a on the annular weakening line 220b.

  On the other hand, since the weakening line 240a is not in contact with the annular weakening line 220a, the fractured part 280a can advance without stopping on the annular weakening line 220a ((b) in FIG. 4).

  When the broken portion 280a reaches the contact point between the annular weakening line 220a and the weakening line 240b, the inside plug 230 bends upward along the weakening line 240b. Thus, when the broken portion 280a reaches the weakening line 240b, a force pulling the inner plug 230 from the pull ring 260 acts on the bending of the inner plug 230 along the weakening line 240b and acts on the progress of the broken portion 280a. It becomes difficult. Thereby, the fractured portion 280b once stops traveling at the point of contact with the weakening line 240b on the annular weakening line 220a.

  When both the fractured part 280a and the fractured part 280b reach the weakening line 240b and the weakening line 240a and stop the progress ((c) in FIG. 4), the breaking force of the pull ring 260 pulling the inner plug 230 is closer to the pull ring 260 Acts again on the progression of part 280b. Then, the fractured portion 280b which has started to travel again travels on the annular weakening line 220b without stopping to the weakening line 240c ((d) in FIG. 4 and (e) in FIG. 4).

  Hereinafter, although not shown in the drawings, by pulling the inner plug 230 from the pull ring 260, the broken parts 280a and the broken parts 280b are alternately advanced on the annular weakening line 220a and the annular weakening line 220b as described above. Then, by advancing the breakage portion 280a and the breakage portion 280b on all the annular weakening lines 220a and the annular weakening lines 220b, that is, by entirely breaking the annular weakening line 220, the inside plug 230 is removed from the container body 200. It can be removed.

  In addition, the order of the progress of the fractured part 280a and the fractured part 280b after the fractured part 280a passes the weakening line 240f or after the fractured part 280b passes the weakened line 240e is not particularly limited. Depending on the direction of pulling of the plug 230 from the pull ring 260, the break 280a and the break 280b proceed simultaneously to connect at the end opposite to the attached end of the pull ring 260 of the plug 230. Alternatively, only one of them may be advanced and connected by the weakening line 240e or the weakening line 240f.

  As described above, by continuing pulling on the pull ring 260, the fractured portions 280a and the fractured portions 280b advance on the annular weakening line 220 alternately. Therefore, the force required to remove the plug 230 simultaneously breaks the annular weakening line 220a and the annular weakening line 220b to simultaneously form the break 280a and the break 280b, except for reaching the first weakening line 240a. It can be smaller than in the case.

  The force required to pull the inner plug 230 by the pull ring 260 can be reduced by bringing the advancing ring weakening line 220 of the fractured portion 280 a and the broken portion 280 b closer to the direction of pulling of the inner plug 230 by the pull ring 260. Therefore, it is preferable that the pulling direction be the longitudinal direction of the annular weakening line 220, that is, the straight line L extend in the longitudinal direction of the annular weakening line 220.

  In addition, since the inside plug 230 removed from the container body 200 in this manner is bent along the weakened line group 240 and becomes compact in a roll shape, it is also suitable for reducing the volume of dust.

(Action / effect)
As described above, according to the present invention, the inner plug 230 can be removed with a small force even when a large opening is employed, as compared with the conventional structure in which the weakening line is formed spirally. . In addition, the inside plug 230 after removal is not bulky because it is rolled.

  In addition, since the opening / closing body 300 is configured to be in contact with and engaged with the annular wall 250 by the outer ring 320 including the inner ring 310 and the engagement claws 321, sealing performance is maintained and suppression of the sealing performance is suppressed. it can. Moreover, the user of the packaging container 100 can know that the packaging container 100 is securely sealed by the impact when the engaging portion is engaged.

  Further, by manufacturing the container body 200 and the opening / closing body 300 by integral molding using a resin or the like, the step of attaching the opening / closing film to the container body becomes unnecessary, so the manufacturing process can be reduced and packaging can be performed at low cost. The container 100 can be manufactured. Moreover, since the rigidity of the container main body 200 can be improved, opening and closing of the opening and closing body 300 is easy. Moreover, if it is the packaging container 100 before accommodating the content, it is possible to overlap and accommodate by closing the opening-closing body 300. FIG.

<Modification>
The connection form of the container body and the opening / closing body is not limited to the form of the packaging container 100. FIG. 5 is a plan view (upper view of FIG. 5), a cross-sectional view cut along line DD ′ (lower view of FIG. 5), and a connecting portion of the packaging container 101 according to a modification example different from the packaging container 100 in connection form. Fig. 21 shows an enlarged cross-sectional view of 211; The packaging container 101 and the packaging container 100 differ only in the form of connection between the container body and the opening / closing body. That is, in the packaging container 100, the container main body 200 and the opening / closing body 300 are integrally molded and connected by the hinge 210. On the other hand, in the packaging container 101, the container body 201 and the opening / closing body 301 are separately formed, and are connected by the connecting portion 211. Parts other than the connection part 211 of the packaging container 101 are formed similarly to the packaging container 100.

  The connecting portion 211 of the packaging container 101 is constituted by two bearing portions 290 protruding from the upper surface of the container body 201 and two rotation shafts 340 formed on the opening and closing body 301 so as to be able to be fitted to the bearing portions 290. As shown in FIG. 5, the rotary shaft 340 is rotatably fitted to the bearing portion 290, whereby the opening / closing body 301 is connected to the container main body 201 and provided so as to be openable / closable with respect to the inner plug 230.

  The present invention can be suitably used for a packaging container and its lid structure.

100, 101 packaging container 200, 201 container main body 210 hinge 211 connecting portion 220 annular weakening wire 230 inner plug 240 weakening wire group 241 first weakening wire group 242 second weakening wire group 250 annular wall 251 engagement protrusion 260 pull ring 270 recess 280a , 280b broken part 290 bearing part 300, 301 open / close body 310 inner ring 320 outer ring 321 engaging claw 330 finger hook part 331 concave part 332 convex part 340 rotation shaft

Claims (5)

A lid structure comprising: an inner plug surrounded by an annular weakening line formed in a container body; and a pull ring attached to an end edge of the inner plug,
A first weakening line group consisting of a plurality of weakening lines extending respectively onto the inner plug from a plurality of positions included in one of two divisions of the annular weakening line by a predetermined straight line passing through the pull ring;
A second weakening line group consisting of a plurality of weakening lines extending respectively on the inner plug from a plurality of positions included in the other divided into two;
The lid is formed such that each point obtained by orthographically projecting one of the plurality of positions onto the predetermined straight line and each point obtained by orthographically projecting the other plurality of positions onto the predetermined straight line are alternately arranged. Part structure.   The lid according to claim 1, wherein the annular weakening line has an oval shape or an oval shape in a plan view, and the predetermined straight line extends in a longitudinal axis direction of the oval shape or the oval shape. Part structure. An open / close member connected to the container body and provided openably and closably with respect to the inner plug;
An annular wall extending from an outer edge of the annular weakening line;
It further comprises an inner ring and an outer ring extending from the surface facing the annular wall of the opening and closing body,
With the cover closed,
The inner ring is in contact with the inner circumferential surface of the annular wall,
The outer ring is engaged in a predetermined range including an outer peripheral surface of the annular wall and at least an opposite side of a connecting portion between the container body and the opening / closing body,
The distance from the surface of the opening and closing body to the position where the inner ring and the annular wall abut is shorter than the distance from the surface of the opening and closing body to the position where the annular wall and the outer ring are engaged. ,
The lid according to claim 1, wherein when the open / close body is changed from the open state to the closed state, the annular wall and the inner ring abut on each other after the annular wall and the outer ring are engaged. Part structure.   The lid structure according to claim 3, wherein a width of an upper end surface of the annular wall is 1 mm or more.   A packaging container having the lid structure according to any one of claims 1 to 3 and integrally formed with the storage structure.

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