JP2017013821A - Spout cap equipped with film - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enable easy breakage of a film.SOLUTION: A spout cap 10 comprises: a closing plate 11 which closes a mouth of a container body, and on which an annular weakened line 22 is formed; a pillar section 26 which is so provided on an outer peripheral edge part of a removal part 25 of the closing plate 11 surrounded by the weakened line 22 as to be projected upward on the opposite container body side along a cap shaft O direction; a pull ring 27 which is provided continuously with the pillar section 26; and a film 12 which is firmly attached to an undersurface of the closing plate 11 which is directed downward on the container body side along the cap shaft O direction. The film 12 is provided with a notch 32 which exposes a portion of the weakened line 22 adjacent to the pillar section 26 downwards.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a dispensing cap.

  Conventionally, a pouring cap described in Patent Document 1 below is known. The dispensing cap closes the mouth portion of the container body, and extends along the cap axial direction to the closing plate in which the annular weakening line is formed and the outer peripheral edge of the removal portion surrounded by the weakening line of the closing plate. The column part projecting upward on the side opposite to the container body side, the pull ring continuously connected to the column part, and the closing plate are fixed to the lower surface facing down on the container body side along the cap axial direction. And a film.

Japanese Utility Model Publication No. 4-106252

  However, in the conventional pouring cap, it is difficult to break the film when the pull ring is pulled up to break the weakening line and open the closing plate. If the film remains in the opening without being broken, the dispensing of the contents may be hindered.

  This invention is made | formed in view of the situation mentioned above, Comprising: It aims at making a film easy to fracture | rupture.

In order to solve the above problems, the present invention proposes the following means.
The pouring cap according to the present invention closes the mouth of the container body, and on the outer peripheral edge of the closing plate formed with an annular weakening line and the removal portion surrounded by the weakening line of the closing plate. A column portion projecting upward on the side opposite to the container body along the cap axial direction; a pull ring continuously provided on the column portion; and the closure plate on the container body side along the cap axial direction. A pouring cap comprising a film fixed to a lower surface facing downward, wherein the film is provided with a notch for exposing a portion of the weakening line adjacent to the pillar portion downward. It is characterized by that.

  In this case, when pulling up the pull ring to break the weakening line and opening the closing plate, first, a portion of the weakening line adjacent to the column portion and exposed from the notch portion (hereinafter referred to as “adjacent portion”) is broken. Start to be. Then, the weakening line is further broken while the removal portion is pulled up together with the pull ring and the column portion. At this time, a tearing force can be applied from the adjacent portion side to the peripheral portion of the cutout portion in the film, and the peripheral portion of the film can be started to break smoothly. Therefore, by further pulling up the pull ring, it becomes possible to propagate the rupture of the film along the weakening line from the peripheral portion, and the film can be smoothly broken along the weakening line.

  The film may be provided with a notch that extends from the notch in the circumferential direction of the weakening line.

  In this case, since the notch part is provided in the film, the peripheral part of the notch part in the film can be easily broken easily.

  A pair of the notches may be provided from the notches toward both sides in the circumferential direction.

  In this case, since a pair of notches are provided, the peripheral edge of the notch in the film can be more easily broken.

  The film may be a resin gas barrier film.

  In this case, since the film is a resin-made gas barrier film, for example, the permeation of oxygen in the pouring cap can be effectively suppressed.

  According to the present invention, the film can be easily broken.

It is a top view of the state where the extraction cap concerning one embodiment of the present invention was developed. It is an AA cross-sectional arrow view shown in FIG. It is a bottom view of the extraction | pouring cap shown in FIG. It is a top view of the film which comprises the extraction | pouring cap shown in FIG. It is a top view of the film which comprises the extraction cap which concerns on one modification of this invention.

Hereinafter, a dispensing cap 10 according to an embodiment of the present invention will be described with reference to the drawings.
As shown in FIGS. 1 to 4, the dispensing cap 10 according to the present embodiment includes a closing plate 11 that closes a mouth portion of a container body (not shown), and a film 12 disposed on the closing plate 11. ing. In the illustrated example, the dispensing cap 10 includes a bottomed cylindrical cap body 13 that is fitted into the mouth portion of the container body, and a mounting tube 14 that is externally fitted to the mouth portion of the container body, and is closed. The plate 11 is the bottom of the cap body 13. The pouring cap 10 is mainly formed of a resin material by injection molding (insert molding) using the film 12 as an insert product.

  The cap body 13 and the mounting cylinder 14 are disposed coaxially with the common shaft. Hereinafter, this common axis is referred to as a cap axis O, and the opening 13a side (anti-container main body side) of the cap body 13 along the cap axis O direction is referred to as an upper side, and the closing plate 11 side (container body side) is referred to as an upper side. The lower side. Further, in a plan view viewed from the cap axis O direction, a direction orthogonal to the cap axis O is referred to as a radial direction, and a direction around the cap axis O is referred to as a circumferential direction.

  The dispensing cap 10 includes an enclosure cylinder 15 that encloses the mounting cylinder 14 from the outside in the radial direction, a lid body 16 that opens and closes an opening 13a (spout port) of the cap body 13, and the lid body 16 and the enclosure cylinder 15. And a hinge portion 17 to be connected. In the following, the direction passing through the hinge portion 17 in the radial direction is referred to as the front-rear direction, the hinge portion 17 side is referred to as the rear side in the front-rear direction, and the opposite side of the hinge portion 17 sandwiching the cap shaft O in the radial direction. Is called the front side. A direction orthogonal to the front-rear direction in plan view is referred to as a left-right direction.

  A radial gap is provided between the inner peripheral surface of the surrounding cylinder 15 and the outer peripheral surface of the mounting cylinder 14. The lower end portion of the front end portion of the surrounding cylinder 15 is connected to the lower end portion of the mounting cylinder 14 via a first connecting piece 18 having a strength that is difficult to break. Of the lower end portion of the surrounding cylinder 15, the portion excluding the portion where the first connecting piece 18 is disposed is a plurality of breakable second portions disposed at the lower end portion of the mounting cylinder 14 at intervals in the circumferential direction. The two connecting pieces 19 are connected.

Here, the central portion of the cap main body 13 in the direction of the cap axis O and the upper end portion of the mounting cylinder 14 are connected via the connecting cylinder 20. The connecting cylinder 20 is placed on the upper end opening edge of the mouth of the container body.
The lid body 16 is formed in a top cylinder shape, and the connecting cylinder 20 is detachably fitted in the open end portion thereof. On the top wall portion of the lid body 16, a seal cylinder 21 is slidably fitted into the cap body 13 (inside the opening 13 a).

  A weakening line 22 extending in an annular shape is formed in the closing plate 11. The weakening line 22 extends continuously over the entire circumference in the circumferential direction. The weakening line 22 has a circular shape in a plan view as viewed from the cap axis O direction, and is arranged coaxially with the cap axis O.

  The weakening line 22 is formed by the annular groove 23 and the thin portion 24. The annular groove 23 is disposed coaxially with the cap axis O on the lower surface of the closing plate 11, and a portion of the closing plate 11 located between the upper surface of the closing plate 11 and the bottom surface of the annular groove 23 is the thin portion 24. Has been. The groove width of the annular groove 23 gradually decreases from the lower side toward the upper side, and the longitudinal sectional view of the annular groove 23 has a triangular shape that protrudes upward.

  A column portion 26 projects upward from the outer peripheral edge portion of the removal portion 25 surrounded by the weakening line 22 in the blocking plate 11, and a pull ring 27 is connected to the upper end portion of the column portion 26. Yes. The column portion 26 is disposed at the rear end portion of the removal portion 25. The pull ring 27 is disposed on the inner side in the radial direction of the cap body 13 and projects forward from the upper end of the column part 26. The pull ring 27 has an annular shape in the plan view and is disposed coaxially with the cap axis O.

An annular convex portion 28 protruding downward is provided on the outer peripheral edge portion of the lower surface of the closing plate 11. The size of the annular protrusion 28 in the cap axis O direction is smaller than the size of the closing plate 11 in the cap axis O direction.
The film 12 is fixed to the lower surface of the closing plate 11. The film 12 is disposed on the lower surface of the closing plate 11 at a portion located on the inner side in the radial direction than the annular convex portion 28. The film 12 has a circular shape in the plan view and is disposed coaxially with the cap axis O. The outer peripheral edge of the film 12 is located on the outer side in the radial direction from the weakening line 22.

The upper surface of the film 12 is fixed to the lower surface of the closing plate 11 over the entire surface. A portion of the film 12 that overlaps the weakening line 22 and the cap axis O direction enters the annular groove 23 and is fixed to a wall surface that forms the annular groove 23.
The film 12 is provided with a positioning portion 31. The positioning portion 31 is a concave portion (notch) provided in the film 12, and when the film 12 is inserted into a mold (not shown), it is fitted into a convex portion provided in the mold, Positioned within the mold.

  In the present embodiment, the film 12 is provided with a notch 32 that exposes a portion of the weakening line 22 adjacent to the column 26 downward. The notch 32 is provided at the rear end of the film 12 and exposes a portion of the weakening line 22 that is adjacent to the column portion 26 from the rear (hereinafter referred to as “adjacent portion 22 a”). The film 12 covers the entire portion of the weakening line 22 except for the adjacent portion 22a.

  The notch 32 is formed in a strip shape that forms an arc extending in the circumferential direction, and is formed symmetrically in the circumferential direction (left-right direction). The notch 32 crosses the adjacent portion 22a of the weakening line 22 in the radial direction and opens from the outer peripheral edge of the film 12 toward the outer side in the radial direction, while the notch 32 has a radially inner side. Is located radially inward of the weakening line 22. The end edge is located on the inner side in the radial direction with respect to the surface located on the outer side in the radial direction in the column portion 26, and the notch portion 32 is at least a part of the connecting portion with the column portion 26 in the closing plate 11. Is exposed downward.

  The film 12 is provided with a notch 33 extending from the notch 32 in the circumferential direction (the circumferential direction of the weakening line 22). The cut portion 33 is disposed in the vicinity of the weakening line 22 and overlaps at least a part of the weakening line 22 in the cap axis O direction. In the present embodiment, the cut portion 33 is formed in a triangular shape that protrudes outward in the circumferential direction in the plan view, and the apex angle of the cut portion 33 is disposed on the weakening line 22. A pair of notches 33 are provided from the notch 32 toward both sides in the circumferential direction.

The film 12 is, for example, a resin having a barrier property that regulates transmission of gas (oxygen, carbon dioxide, etc.), moisture such as moisture, light such as ultraviolet rays, odor components of contents, and the like. Depending on the case, it is selected as appropriate including the single layer structure or the laminated structure.
For example, when exhibiting a barrier property against gas, a nylon resin or an ethylene vinyl alcohol copolymer resin may be mentioned. Particularly when exhibiting an oxygen barrier property, a metaxylenediamine-based nylon or ethylene vinyl alcohol is used. An oxygen-absorbing resin based on a copolymer resin or the like, or a resin in which an iron-based oxygen absorbing material is kneaded into an olefin resin or the like can be used. Further, for example, when exhibiting a barrier property against moisture, a cyclic polyolefin-based resin can be used, and when exhibiting a light-shielding property against ultraviolet rays or the like, a resin layer or a colored resin layer containing an ultraviolet absorber can be used. It is done.

  Here, in the present embodiment, a resin gas barrier film is employed as the film 12. The film 12 has a three-layer laminated structure. The material of each layer of the film 12 is, in order from the lower layer to the upper layer, linear low density polyethylene (LLDPE), ethylene-vinyl alcohol copolymer (EVOH), and linear low density polyethylene. ing. That is, the film 12 includes an intermediate layer formed of EVOH sandwiched between a lower layer and an upper layer formed of LLDPE. The thickness of each layer of the film 12 is 30 μm, 12 μm, and 50 μm in order from the lower layer to the upper layer. That is, the film 12 is thicker in the order of the intermediate layer, the lower layer, and the upper layer.

  As described above, according to the dispensing cap 10 according to the present embodiment, when the pull ring 27 is pulled up to break the weakening line 22 and open the closing plate 11, first, the adjacent portion 22 a of the weakening line 22 is broken. Start to be. Then, the weakening line 22 is further broken while the removal portion 25 is pulled up together with the pull ring 27 and the column portion 26. At this time, a tearing force can be applied to the peripheral edge of the notch 32 in the film 12 from the adjacent portion 22a side, and the peripheral edge of the film 12 can begin to break smoothly. Therefore, by further pulling up the pull ring 27, it becomes possible to propagate the breaking of the film 12 from the peripheral portion along the weakening line 22, and the film 12 can be smoothly broken along the weakening line 22. it can.

Moreover, since the notch part 33 is provided in the film 12, the peripheral part of the notch part 32 in the film 12 can be made easy to fracture | rupture smoothly.
Furthermore, since a pair of the notches 33 are provided, the peripheral edge of the notch 32 in the film 12 can be more easily broken.
In addition, in this embodiment, since the film 12 is a resin-made gas barrier film, the permeation | transmission of oxygen in the extraction cap 10 can be suppressed effectively, for example.

  The technical scope of the present invention is not limited to the above embodiment, and various modifications can be made without departing from the spirit of the present invention.

  In the said embodiment, although the notch part 32 has opened to the outer periphery of the film 12, this invention is not limited to this. For example, as shown in FIG. 5, the notch 32 does not have to open to the outer peripheral edge of the film 12.

  The cut portion 33 is not limited to the configuration shown in the embodiment. For example, the notch 33 may be provided limitedly from the notch 32 toward one side in the circumferential direction. Further, the cut portion 33 may not be triangular in plan view.

In the said embodiment, although the weakening line 22 and the removal part 25 are exhibiting circular shape (perfect circle shape) in the said planar view, this invention is not limited to this. For example, the weakening line 22 and the removal unit 25 may have an elliptical shape or a rhombus shape that is long in the front-rear direction in the plan view.
The weakening line 22 is not limited to the configuration shown in the embodiment. For example, the weakening line 22 can be formed by perforations.

  In addition, it is possible to appropriately replace the constituent elements in the embodiment with known constituent elements without departing from the spirit of the present invention, and the above-described modified examples may be appropriately combined.

10 pouring cap 11 closing plate 12 film 22 weakening line 25 removal part 26 column part 27 pull ring 28 annular convex part 32 notch part 33 notch part O cap shaft

Claims (4)

While closing the mouth of the container body, a closing plate formed with an annular weakening line,
A column part projecting toward the upper side on the side opposite to the container body along the cap axial direction on the outer peripheral edge of the removal part surrounded by the weakening line of the closing plate,
A pull ring connected to the column part;
In the closing plate, a pouring cap comprising a film fixed to a lower surface facing downward which is a container main body side along the cap axial direction,
The pouring cap characterized by the said film being provided with the notch part which exposes the part adjacent to the said pillar part below among the said weakening lines.   The pouring cap according to claim 1, wherein the film is provided with a cut portion extending from the cutout portion in a circumferential direction of the weakening line.   The dispensing cap according to claim 2, wherein a pair of the cut portions are provided from the cut portion toward both sides in the circumferential direction.   The pouring cap according to any one of claims 1 to 3, wherein the film is a resin gas barrier film.

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