JP4222801B2 - Hinge cap with tamper evidence added to the top lid - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a hinge cap in which tamper evidence (hereinafter referred to as TE property) is added to an upper lid.
[0002]
[Prior art]
In the case of a cap having a structure in which a cap body is fitted and attached to the container mouth by a stopper and an upper lid hinged to the cap body, and the spout is opened by a pull ring on the top wall of the cap body. Even if the top lid is opened due to mischief, etc., the sealing performance is maintained as long as there is no spout opening due to score breakage, but if the top lid can be opened and closed freely during the distribution process, even if the spout is broken due to mischief Since it cannot be discriminated from the outside when the upper lid is closed, it is desirable that the upper lid also has TE properties. As a means for imparting such TE properties, it is generally performed to wrap the container mouth including the upper lid with a shrink film. In this case, in the container sealing process, in addition to the capping process, the shrink process is further performed. There is a problem that the number of processes increases.
[0003]
As a conventional technique for solving this problem, a cap arm is not of a structure having a sealing property, but in a hinge cap, a sealing arm (tamper) that hangs down from a lower edge of a hinge-connected upper lid. (Evident band) is provided through a breakable breakable portion, and a flange having a rigid structure and an undercut at the tip is formed at the lower end of the sealing arm, and the flange is engaged with the lower end of the peripheral wall of the cap body. It has been proposed that the upper lid cannot be opened unless the sealing arm is broken and removed so as to have a TE property (Japanese Utility Model Laid-Open No. 4-1159).
[0004]
[Problems to be solved by the invention]
In the case of the hinge cap having the TE property that has been proposed in the related art, a flange portion that is bent at a right angle is formed at the distal end portion of the sealing arm. As shown in the figure, it can be molded only with the top lid opened horizontally and the sealing arm tilted horizontally. This is because when the molding is performed with the sealing arm standing upright, the mold cannot be opened by engaging the mold when the mold is opened up and down and released. is there. Therefore, as the molding is performed with the sealing arm tilted horizontally, the mold area increases, the molding speed does not increase, which is disadvantageous for speeding up, the mold cost is increased, and the tip of the buttock is increased. Since there is an undercut, there is a problem that it is disadvantageous for die cutting after molding.
[0005]
The present invention is intended to solve the above-mentioned problems of the prior art, and in a cap having a hinge top cover, it is possible to prevent the top cover from being opened by mischief and to easily determine whether or not the top cover has been opened. without the hinge cap with excellent TE band sex lower the productivity, and can be molded without increasing the mold cost, and to provide a Hinjikya' up by adding a TE of the upper lid.
[0006]
[Means for Solving the Problems]
A hinge cap according to the present invention for solving the above-mentioned problems is a cap comprising a cap main body mounted on a container mouth and an upper lid hinged to the cap main body, and a skirt wall on the opposite side of the upper lid from the hinge coupling portion. A plate-shaped tamper evidence band extending to the lower end is integrally formed through the weakened portion, a flap is provided inside the lower end of the tamper evidence band through a thin portion, and the skirt wall hinge connecting portion A hinge cap having tamper evidence added to an upper lid, wherein a notch is formed at the lower end on the opposite side, and the flap is locked in the notch at the lower end of the skirt wall.
[0007]
Notch of the skirt wall lower end, before Symbol flap consists fitting groove having a width for fitting, fitting groove is toward the inner periphery from the outer peripheral portion in the thickness direction of the skirt wall to the flared The flap is formed in a divergent shape toward the distal end so that it can be fitted with the fitting groove, and when the flap is fitted in the fitting groove, the flap is pulled out in the outward direction. By forming the both side edges into a structure that engages with both side edges of the fitting groove, the flap can be reliably locked to the cap body with a simple structure, and a reliable TE property can be obtained.
[0008]
Further, the notch portion at the lower end of the skirt wall is formed of a fitting groove having a width for fitting the flap, and the fitting groove is engaged with both side edges of the flap fitted into the fitting groove. In order to prevent the flap from rotating downward, either side edge thereof is inclined upwardly toward the upper side, or a locking projection is provided on each side edge thereof.
[0009]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, the present invention will be described in detail with reference to the embodiments shown in FIGS.
Drawing shows the hinge cap which concerns on this embodiment, FIG.1 (a) is sectional drawing which closes an upper cover and shows the unopened state, FIG.1 (b) is the AA arrow directional view, FIG.1 (c). Fig. 1B is a view taken along the line B-B in Fig. 1B, and Fig. 1D is an enlarged view corresponding to the view taken along the line B-B in Fig. 1B of another embodiment. Yes. FIG. 2 is a cross-sectional view showing a state after molding (a state where the upper lid is not closed). A hinge cap 1 according to this embodiment includes a cap body 2 and an upper lid 3 that is hinged to the cap body and is integrally formed. The cap body 2 is attached to a container opening 45 (FIG. 5) by a stopper. It has become. The cap body 2 has a skirt wall 5 depending from the top wall 4, and an annular protrusion 6 is formed on the inner peripheral surface of the skirt wall to engage with a jaw portion 46 formed on the outer peripheral portion of the container mouth. Yes. Further, the top wall 4 has a tear wall portion 8 surrounded by a score 7 that can be easily broken, and a pull ring 9 is formed on the upper surface thereof so that the tear wall can be pulled by pulling it with a finger. The part 8 can be torn open. Further, a pour tube 10 is formed on the top surface of the top wall 4 so as to surround the tearing wall portion 8, and an inner ring 11 is formed on the bottom surface so as to be engaged with the inner peripheral surface of the container mouth. Further, in the vicinity of the outer peripheral edge of the top wall 4, an annular engaging protrusion 12 is formed that engages with an annular engaging recess 14 (FIG. 2) formed on the inner peripheral edge of the lower end of a skirt wall 18 of the upper lid 3 described later. .
[0010]
On the other hand, the upper lid 3 is connected to the upper edge of the skirt wall of the cap body 2 via a central hinge piece 15 and a pair of connecting pieces 16 formed separately on both sides, as shown in FIGS. It is hinged so that it can be opened and closed. The top lid 3 has a top wall 17 and a skirt 18, and from the inner surface of the top wall, the top lid 3 is fitted to the inner peripheral surface of the pouring cylinder 10 formed on the top wall 4 of the cap body 2, and the spout is formed. A pour tube fitting inner cylinder 19 that serves as a seal is formed so as to protrude, and a finger-hanging piece 20 is formed so as to protrude from the edge opposite to the hinge portion.
[0011]
The above-described configuration is the same as the conventional hinge cap, but the hinge cap 1 of the present embodiment is the same as the hinge cap having the above-described configuration. A TE band 21 that fulfills the above functions is provided. The TE band 21 has a plate shape curved in the width direction so as to follow the outer peripheral surface of the skirt wall of the cap body, and the base end portion of the TE band 21 is formed on the lower surface of the finger hanging piece 20 of the upper lid 3 via a weakened portion 22 that can be broken. Protrusions are formed. A thin flap 23 that can be bent inward is provided at the lower end of the TE band, and the flap 23 is engaged with a notch 30 disposed at the lower end of the skirt wall 5 of the cap body as shown in FIG. It is supposed to stop.
[0012]
When the cap is formed, as shown in FIG. 2, the TE band 21 is erected almost vertically upward on the lower surface of the finger-hanging piece 20, and the flap 23 is extended from the lower end of the TE band 21 in the longitudinal direction of the TE band. Molded in the raised state, and after mold release, with the top lid closed and fitted into the cap body, as shown in FIG. 1, the flap 23 is bent in the direction of the arrow 25 and locked to the notch 30 on the skirt wall Let By molding in such a manner, a molding die having a conventional TE band with a flat area of the die can be further reduced in size, and the manufacturing cost can be reduced. The formation of the flap 23 is not limited to the above-described mode, and for example, the flap 23 may be formed to extend upward and inward on the lower surface of the finger-hanging piece 20. Therefore, “molding in a state where the flap is raised so as to extend in the longitudinal direction of the TE band” defined in claim 4 includes molding in such a state.
[0013]
As shown in FIG. 1 (b), the flap 23 is formed so as to expand from the lower end of the TE band toward the inside, and the side edges 24, 24 are inclined so that they extend obliquely to each other. . On the other hand, the cutout portion 30 of the skirt wall to which the flap 23 is locked is formed by cutting out from the lower end of the skirt wall so as to fit and lock the flap 23, and its upper side is inward. The side edges 31, 31 are formed so as to incline toward the inside at substantially the same inclination angle as the side edges 24, 24 of the flap. Further, as shown in FIG. 1C, the side edges 31, 31 are formed such that the lower end is slightly narrower than the width of the flap and is inclined so as to expand toward the top. Therefore, when the cap is assembled, the flap 23 is elastically deformed by passing the narrow portion at the entrance of the notch 30 by closing the upper lid 3 and pushing the flap 23 in the direction of the arrow 25 shown in FIG. Mating.
[0014]
Therefore, in this state, even if the flap 23 tries to rise in the direction opposite to the arrow 25, the side edges 24, 24 of the flap engage with the side edges 31, 31 inclined upward in the notch 30. Can't wake up easily. Furthermore, the flap side edges 24 and 24 and the side edges 31 and 31 of the engaging portion 30 cannot be pulled out in a wedge shape with respect to the drawing in the direction of the arrow 26 in FIG. Therefore, if the finger is placed on the finger-hanging piece 20 of the upper lid 3 and the upper lid 3 is opened in this state, tension is applied to the TE band 21, but the flap 23 at the lower end of the TE band is engaged with the engaging portion of the skirt wall. Therefore, the upper cover 3 cannot be opened unless a tension greater than the breaking load acts on the weakened portion 22 and the portion is not broken. Therefore, the hinge cap of this embodiment has TE property with respect to the opening of the upper lid that is hinged. And in this embodiment, since it provided in the notch part of the skirt wall lower end, and locked the flap in the notch part, although there was a TE band, there was no projecting part from the skirt wall lower end part, Handling until the cap is plugged into the container and supply by a chute can be facilitated. In the above embodiment, the flaps are cut off by forming the side edges 31, 31 of the notch portion of the cap body so that the lower end is slightly narrower than the width of the flap and is inclined upwardly toward the upper end. As shown in FIG. 1 (d), the side edges 31, 31 of the notch portion of the cap body are inclined in a divergent shape toward the upper side. Locking protrusions 40 may be provided so that both side edges are formed in parallel and the flaps fitted in the notches are locked.
[0015]
Further, the hinge cap of the present embodiment has the following easy separation and disposal structure so that even if it is a stopper cap, the cap can be easily separated from the container after use and separated and discarded.
That is, as shown in FIG. 3, the skirt wall 5 of the container body 2 spans a part of the side to which the upper lid 3 is hinge-connected (about a half circumference in the embodiment shown in the figure), and the outer peripheral wall 33 at the bottom. An arc-shaped cut 34 is formed from the top surface of the top wall so as to leave the connecting portion 35 so that the inner peripheral wall portion 32 is connected, and the inner peripheral wall portion 32 and the outer peripheral wall portion 33 are doubled in the thickness direction of the skirt wall. Divided into two walls. As shown in FIG. 4, the outer peripheral wall portion 33 is provided with a breakable weakening line 36 located on both sides of the hinge connecting pieces 16 and 16 and reaching the connecting portion 35 from the upper edge of the skirt wall. In the inner peripheral wall portion 32, a weakening line 39 extends from the lower end to a position beyond the annular protrusion 6 at a position corresponding to the weakening line 36, and an outer peripheral wall portion following the hinge portion is a tear wall 37.
[0016]
In the present embodiment, as shown in FIG. 3, a longitudinal cut 38 is made from the inside into the inner peripheral wall portion 32 and the outer peripheral wall portion 33 so as to straddle the circumferential cut 34 formed in the skirt wall. The wall is thinned and becomes a weakening line 36. In addition to the longitudinal cut 38, the inner circumferential wall is made by making a longitudinal cut from the inner lower part to a position beyond the annular projection 6, thereby forming the inner circumferential wall. From the lower end to the position beyond the annular protrusion 6, the line of weakness 39 is formed thin. Therefore, when the dispensing of the content liquid from the container is completed and the container is discarded, when the upper lid 3 is opened and the upper lid 3 is pulled outward, the tear wall 37 is formed via the central hinge 15 and the hinge connecting pieces 16 and 16 on both sides. Is pulled outward and the weakening lines 36, 36 break. Next, by pulling the tear wall 37 upward, the inner peripheral wall portion 32 of the skirt wall is pulled outward from the lower end via the connecting portion 35 at the lower end, the weakening line 39 of the inner peripheral wall is broken, and the inner peripheral wall portion The hinge cap 1 can be removed from the container mouth by loosening the engagement with the container mouth and pulling it as it is. Therefore, even if it is a hinge cap, separation from the container opening after use is easy, separation disposal is promoted, and reuse of resources is promoted.
[0017]
Further, in the hinge cap of the present embodiment, an arc-shaped buffer protrusion 41 is formed on the inner week surface of the top wall 17 of the upper lid 3 on the outer side of the extraction tube and on the hinge part side. . The buffer protrusion 41 is provided in order to prevent the inner ring 11 from hitting the vicinity of the score 7 that divides the tearing wall portion at the time of assembling and capping the cap and breaking the score. By forming the inner ring 14 slightly longer than the inner ring 14 provided, it hits the top wall 4 before the inner ring at the time of plugging, so that the inner ring on the hinge connecting portion side that is most susceptible to impact at the time of plugging is directly It is possible to prevent hitting the score or its vicinity. Thereby, the score breaking accident in the cap assembling process and the stoppering process is prevented, and the yield is increased.
[0018]
The embodiments of the present invention have been described above. However, the present invention is not limited to the above-described embodiments, and various design changes can be made within the scope of the technical idea. For example, in the above-described embodiment, the hinge cap has a pull ring on the top wall of the cap body. However, the present invention does not necessarily have a pull ring, and can be applied to a hinge cap in which a spout is formed in advance. Nor. Further, the engagement means between the TE band flap and the engagement portion of the cap body does not necessarily have to form the side wall of the engagement portion and the side edge of the flap in a divergent shape as in the above-described embodiment, for example, As shown in FIGS. 1 and 2, the upper side of the locking portion formed by cutting out from the lower end of the skirt wall of the cap body is formed obliquely upward toward the inside, whereby the flap is formed in an arc shape. Therefore, when the flap 25 is bent and fitted, the flap is bent in a state exceeding the inflection point, and a deflection force that bends upward acts on the flap. From this state, the tip of the flap is lifted up. Unless it wakes up, the flap does not easily come up and return. Therefore, even if there is no engagement between the side edges, even if the finger cover piece is lifted upward to open the top cover and tension is applied to the TE band, the flap does not easily rise and return to the original state. It is possible to give a strong resistance to pulling up, break the TE band, and obtain TE properties. Alternatively, the flap may be folded into a notch and directly locked to the skirt wall by adhesion (such as heat seal or adhesive).
[0019]
【The invention's effect】
As described above, according to the first and second aspects of the present invention, in the cap having the hinge upper lid, a foldable flap is provided at the lower end of the TE band, and the flap is bent to the notch portion at the lower end of the skirt wall. The simple structure of locking allows the TE band to be securely locked to the cap body, prevents the opening of the upper lid from being tampered with, and makes it easy to determine whether the upper lid has been opened or not. In addition, after opening, the TE band can be easily removed from the container body, and a hinge cap excellent in tamper evidence of the upper lid can be obtained. In addition , since the TE band provided on the upper lid can be molded in a substantially vertical state, the flat area of the mold is not increased, and the hinge cap having TE property for opening and closing the upper lid increases the mold cost. And can be easily molded.
[Brief description of the drawings]
1A and 1B show a hinge cap according to an embodiment of the present invention, in which FIG. 1A is a cross-sectional view showing an unopened state with an upper lid closed, FIG. It is a BB arrow line view of 1 (b), and (d) is a figure equivalent to the BB arrow line view of Drawing 1 (b) of other embodiments.
FIG. 2 is a cross-sectional view of the hinge cap according to the embodiment of the present invention in a released state immediately after molding.
FIG. 3 is a plan view thereof.
FIG. 4 is a rear view of the hinge cap according to the embodiment of the present invention with the upper lid closed.
FIG. 5 is a cross-sectional view of an unopened state in which a hinge cap according to an embodiment of the present invention is plugged into a container.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Hinge cap 2 Cap main body 3 Top cover 4 Top wall 5 Skirt wall 6 Annular projection 7 Score 8 Torn wall part 9 Pull ring 10 Outlet cylinder 15 Central hinge 16 Connecting piece 17 Top wall 18 Skirt wall 19 of upper lid 19 Tube 20 Finger hanging piece 21 Tamper evidence (TE) band 22 Weakened portion 23 Flap 24 Side edge 30 Notch portion 31 Side edge 32 Inner peripheral wall portion 33 Outer peripheral wall portion 34 Notch 35 Connection portion 36 Weakened wire 37 Tear wall 38 Notch 40 Engagement Stop projection

Claims (2)

A plate-shaped tamper evidence that extends to the lower end of the skirt wall of the cap body on the opposite side of the hinge connection portion of the cap body in a cap comprising a cap body mounted on the container mouth and an upper lid hinged to the cap body A band is integrally molded through the weakened part, a flap is provided inside the lower end of the tamper evidence band through a thin part, and a notch is formed at the lower end of the skirt wall opposite to the hinge connecting part to become so engaged with the flap to the cutout portion of the skirt wall lower end,
The notch portion at the lower end of the skirt wall is formed of a fitting groove having a width to which the flap is fitted, and the fitting groove is formed so as to widen from the outer peripheral portion toward the inner peripheral portion in the thickness direction of the skirt wall. In addition, the flap is formed in a divergent shape toward the distal end so as to be fitted to the fitting groove, and when the flap is fitted in the fitting groove, A hinge cap having tamper evidence added to an upper lid, wherein both side edges engage with both side edges of the fitting groove . A plate-shaped tamper evidence that extends to the lower end of the skirt wall of the cap body on the opposite side of the hinge connection portion of the cap body in a cap comprising a cap body mounted on the container mouth and an upper lid hinged to the cap body A band is integrally molded through the weakened part, a flap is provided inside the lower end of the tamper evidence band through a thin part, and a notch is formed at the lower end of the skirt wall opposite to the hinge connecting part Then, the flap is locked in the notch at the lower end of the skirt wall ,
The cutout portion at the lower end of the skirt wall is formed of a fitting groove having a width to which the flap is fitted, and the fitting groove is engaged with both side edges of the flap fitted into the fitting groove. An upper lid characterized in that both side edges thereof are inclined in a divergent shape toward the upper side so as to prevent downward rotation of the flap, or locking projections are provided on both side edges. Hinge cap with added tamper evidence.

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