JP2015044610A - Extraction stopper made of synthetic resin - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enable the whole of an extraction stopper made of synthetic resin to be removed from a container sufficiently easily without using an implement after the content of a container is consumed by improving an extraction stopper made of synthetic resin (2) which is adaptable for a paper container (34) where a discharge hole (40) is formed and has a discharge cylinder part (4), a flange part (6) and a closing part (8) is formed.SOLUTION: A closing part is formed to have a hinge part (14) extending from a base edge (20), a closing main part (16) extending by succeeding the hinge part to cover a discharge cylinder part, a gripping part (18) extending above from the closing main part from a folding edge (28) with the closing main part connected to the discharge cylinder part via a breakable start end thin wall connection part (26). A breakable start end thin wall part (10) having a breakable start end marginal part (10a) and an extension part (10b) extending beyond the outside at both sides of the base edge from both side ends of this breakable start end marginal part.

Description

  The present invention relates to a synthetic resin pouring stopper that is applied to a paper container in which a discharge hole is formed. More specifically, the discharge tube portion, and a flange portion and a flange portion extending from the outer peripheral edge of the lower end of the discharge tube portion. A synthetic resin pouring stopper having a closure portion extending from a base edge connected to the upper surface and closing the discharge cylinder portion, the collar portion being joined to the container and the discharge cylinder portion being communicated with the discharge hole of the container About.

  In the following Patent Document 1, as a synthetic resin pouring stopper applied to a paper container in which a discharge hole is formed, a discharge cylinder part, and a flange part extending from the lower peripheral edge of the discharge cylinder part, And a closing part connected to the outer peripheral surface of the upper end of the discharge tube by a flexible connecting piece (curved arm). The closing portion extending over the upper surface of the discharge tube is connected to the inner peripheral surface of the upper end of the discharge tube via a breakable thin-walled connection portion. The closing part is also provided with a gripping part. The flange portion is joined to the outer surface or the inner surface of the container, and the discharge cylinder portion is communicated with the discharge hole of the container. When consuming the contents of the container, grip the gripping part and force the closure part away from the discharge cylinder part to break the breakable thin-walled connection part and separate the closure part from the discharge cylinder part to discharge. Open the tube.

  Further, in Patent Document 2 below, in a synthetic resin pouring tap applied to a paper container in which a discharge hole is formed, an annular score is arranged on a collar part joined to the container, and the contents of the container When the container is discarded after consumption, the above-mentioned annular score may be broken and the synthetic resin pouring stopper may be left in the container with the region outside the above-mentioned annular score in the buttock being detached from the container. It is disclosed that it can be configured.

No. 7-18588 JP 2011-131898 A

  Thus, with regard to the collection of containers that have consumed the contents, so-called separate collection has recently been strongly demanded from the viewpoint of environmental conservation or resource reuse. The tap cannot fully satisfy such a demand. The synthetic resin pouring tap disclosed in Patent Document 1 does not take into account separation from the container, and cannot meet the demand for separate collection. On the other hand, the synthetic resin pouring stopper disclosed in the above-mentioned Patent Document 2 breaks off the annular score formed on the collar as described above, thereby detaching a corresponding portion of the synthetic resin pouring stopper from the container. can do. However, the portion outside the annular score in the buttocks remains without being removed from the container, and therefore the demand for separate collection cannot be fully met.

  The present invention has been made in view of the above-mentioned facts, and its main technical problem is to improve a synthetic resin pouring stopper applied to a paper container in which a discharge hole is formed, and the contents of the container. So that the entire plastic spout can be easily removed from the container without the need for tools, etc., so that the demand for separate collection can be fully satisfied. To do.

  As a result of intensive studies, the inventor has found that the closing portion is a hinge portion extending from the base edge, a closing main portion extending after the hinge portion and covering the discharge cylinder portion, and a folded edge connected to the closing main portion. And the closure main part is connected to the discharge cylinder part via a breakable thin-walled connection part, and the collar part is provided outside the base edge. Forming a breakable thin wall portion having a break starting edge extending along the base edge and an extending portion extending from both sides of the break starting edge to the outside of the both sides of the base edge, It has been found that the main technical problem can be achieved.

That is, according to the present invention, as a synthetic resin pouring stopper that achieves the main technical problem, a synthetic resin pouring stopper that is applied to a paper container in which a discharge hole is formed,
A discharge cylinder part, a flange part extending from the outer periphery of the lower end of the discharge cylinder part, and a closing part extending from a base edge connected to the upper surface of the flange part,
The closing portion includes a hinge portion extending from the base edge, a closing main portion extending subsequent to the hinge portion and covering the discharge cylinder portion, and a closing main portion from a folded edge connected to the closing main portion. The closed main part is connected to the discharge cylinder part via a breakable thin-walled connection part,
The flange includes a break start edge extending outside the base edge along the base edge, and an extending portion extending from both side ends of the break start edge to the outside of both side edges of the base edge A breakable thin portion is formed,
The outer peripheral edge of the lower surface or the upper surface of the flange is joined to the outer surface or the inner surface of the container, and the discharge cylinder is communicated with the discharge hole of the container.
A synthetic resin pouring tap is provided.

  Preferably, a cylindrical protruding piece extending into the discharge cylinder portion is formed on the lower surface of the closing main portion of the closing portion, and an outer peripheral surface of the cylindrical protrusion piece and an inner peripheral surface of the discharge cylinder portion are It is connected by the breakable thin-walled connecting portion. It is preferable that the extending end portion of the grip portion is connected to the upper surface of the closed main portion by a breakable connecting piece. Conveniently, the gripping part includes a ring-shaped part on which a finger can be hung. In a preferred embodiment, a synthetic resin film is laminated on at least the outer surface of the paper container, and the flange is joined to the container by welding the outer peripheral edge of the lower surface of the flange to the outer surface of the container. ing. The flange portion is rectangular, the base edge is straight, the breakable thin portion formed in the flange portion is a channel shape, and both the break start end edge portion and the extension portion are both Conveniently linear. The folded edge preferably extends parallel to the base edge.

  In the synthetic resin pouring tap of the present invention, when consuming the contents of the container, the gripping part of the closing part is pulled to force the closing main part away from the discharge cylinder part, and the thin-wall connection that can be broken The part is broken and the discharge cylinder part is opened, thus allowing the contents of the container to be poured out through the discharge cylinder part. After consuming the contents of the container, the gripping part is pulled to break the breakable thin part formed in the collar part, and the gripping part is further pulled to pull the outer peripheral edge part on the lower surface or upper surface of the collar part and the container. And the entire synthetic resin pouring tap is detached from the container, and the paper container and the synthetic resin pouring tap are separated to enable complete separation and collection. Since the rupture of the breakable thin wall portion starts from a portion located near the base edge and outside thereof, the stress can be concentrated effectively at the required portion at the start, and can be performed sufficiently easily. it can. In addition, when the joint between the peripheral portion of the lower surface or the upper surface of the flange portion and the container is broken, the peripheral region of the flange portion is separated from other portions by the breakage of the breakable thin-walled portion so that it can be easily bent. In addition, the fracture of the joint is initiated locally from the edge located on the opposite side of the base where the stress is concentrated and can therefore be carried out sufficiently easily.

The slope view which shows suitable embodiment of the pouring tap comprised according to this invention. The front view of the pouring tap shown in FIG. The top view of the pouring tap shown in FIG. The bottom view of the pouring tap shown in FIG. The left view of the pouring tap shown in FIG. The right view of the pouring tap shown in FIG. Sectional drawing of the pouring tap shown in FIG. The slope view which shows the state at the time of opening the state which attached the pouring stopper shown in FIG. 1 to the paper container, and opening the pouring stopper. The slope view which shows the behavior at the time of releasing the pouring stopper shown in FIG. 1 from a paper container.

  Hereinafter, a preferred embodiment of a synthetic resin pouring tap constructed according to the present invention will be described in more detail with reference to the accompanying drawings.

  Referring to FIGS. 1-7, particularly FIGS. 1 and 7, the entire construction constructed in accordance with the present invention is number 2 which can be integrally injection molded from a suitable synthetic resin such as polyethylene or polypropylene. The pouring tap shown includes a discharge cylinder part 4, a collar part 6 and a closing part 8.

  As clearly understood by referring to FIG. 4, the discharge tube portion 4 has a hexagonal tube shape that is somewhat flat in the left-right direction in FIG. 4, and its lower end edge is directed upward in the right direction in FIG. 7. Accordingly, the axial length of the discharge cylinder portion 4 is gradually decreased toward the right in FIG. The discharge cylinder portion 4 is not limited to such a shape, and can be formed into an appropriate cylinder shape such as a cylindrical shape, an elliptical cylinder shape, or a square cylinder shape if desired.

  The flange 6 extends from the outer peripheral edge at the lower end of the discharge cylinder 4, and as is apparent from FIGS. 1, 3, and 4, in the illustrated embodiment, the outer periphery of the flange 6 is rectangular. It is important that the brim portion 6 is formed with a breakable thin portion 10. In the illustrated embodiment, the breakable thin-walled portion 10 has a channel shape (U-shape) as a whole, a breakage start edge portion 10a that extends linearly along a base edge to be described later of the closing portion 8, and this breakage. And extending portions 10b extending linearly from both side ends of the starting end edge portion 10a through the outside of both side ends of the base edge described later. If desired, the breaking start edge portion 10a and / or the extending portion 10b of the breakable thin-walled portion 10 can be curved. The thin breakable portion 10 is defined by forming a groove on the lower surface of the flange portion 6. If desired, the breakable vortex portion 10 can be defined by forming a groove on the upper surface of the flange portion 6. In the illustrated embodiment, in addition to the groove defining the breakable thin portion 10, auxiliary grooves 12 extending along both sides of the groove are also formed. The auxiliary groove 12 has an effect that the breakable thin portion 10 is broken when an ultrasonic wave is applied to weld the required portion of the spout 2 to the required portion of the container as described later. Prevent it.

  The closing part 8 includes a hinge part 14, a closing main part 16 and a gripping part 18. In the illustrated embodiment, as clearly understood by referring to FIG. 7 in conjunction with FIG. 1, the hinge portion 14 is relatively thin and upwards from the base edge 20 connected to the upper surface of the flange portion 6. Next, it extends in a substantially semicircular shape. The base edge 20 advantageously extends linearly in a direction perpendicular to the plane of the paper in FIG. The closed main part 16 extends to the left in FIG. 7 following the hinge part 14 and covers the discharge cylinder part 4. A cylindrical projecting piece 22 projecting into the discharge cylinder portion 4 is formed on the lower surface of the closed main portion 16 having a substantially rectangular shape. The cylindrical protruding piece 22 has a hexagonal cylindrical shape corresponding to the shape of the discharge cylindrical portion 4, and an annular ridge 24 is formed on the outer peripheral surface thereof. As clearly shown in FIG. 7, the outer peripheral surface of the cylindrical projecting piece 22 is connected to the upper end portion of the inner peripheral surface of the discharge cylindrical portion 4 through the ruptureable thin-walled connecting portion 26 over the entire periphery. Thus, the upper end of the discharge cylinder portion 4 is closed by the closing main portion 16. The gripping part 18 extends somewhat upward from the folded edge 28 connected to the closure main part 16 and then extends to the right in FIG. 7 and thus above the closure main part 16. The folding edge 28 preferably extends in a straight line parallel to the base edge 20 (and thus in a direction perpendicular to the paper surface in FIG. 7). In the illustrated embodiment, the gripping portion 18 has a ring-shaped portion 30 on which a finger can be hung. The extending end portion of the gripping portion 18, and hence the lower surface of the extending end portion of the ring-shaped portion 30, is connected to the upper surface of the closing main portion 16 via an elongated breakable connecting piece 32. The lower end portion of the breakable connecting piece 32 is gradually narrowed.

  If the description is continued with reference to FIG. 8 together with FIGS. 1 to 7, the spout 2 as described above can be advantageously applied to the paper container 34 having the top wall of a substantially isosceles triangle shape. The top wall of the illustrated container 34 has an upright protruding piece 36 extending upward in the central region thereof, and has inclined walls 38 on both sides of the upright protruding piece 36. One of the inclined walls 38 (the inclined wall on the front side in FIG. 8) is formed with a discharge hole 40 (FIG. 9 g) that has a shape corresponding to the cross-sectional shape of the discharge tube portion 4 of the spout 2. ing. It is convenient that an appropriate synthetic resin film that allows welding of the spout stopper 2 is laminated on at least the outer surface of the paper forming the container 34. As for the spout 2, the lower surface of the flange 6, preferably only the outer peripheral region (the region marked with a large number of points in FIG. 4) outside the breakable thin portion 10, is appropriately applied by ultrasonic welding. By welding to the outer surface of one of the inclined walls 38 of the container 34 by the above means, the discharge cylinder portion 4 of the spout 2 is aligned with the discharge hole 40 formed on one side of the inclined wall 38. It is done. As can be clearly seen from FIG. 8 a, the spout 2 is advantageously positioned and welded so that the base edge 20 is located on the upright protruding wall 36 side of the container 34. If desired, instead of welding the lower surface of the flange 6 of the spout 2 to one outer surface of the inclined wall 38 of the container 34, the upper surface of the flange 6 of the spout 2 is connected to the inclined wall 38 of the container 34. (In this case, the discharge tube portion 4 and the closing portion 8 of the spout 2 extend out of the container 34 through the discharge hole 40 formed in one of the inclined walls 38). Will do).

  Referring mainly to FIG. 8, when consuming the contents of the container 34, the ring-shaped portion 30 in the grasping portion 18 of the spout 2 is hooked with a finger to force upward, and the breakable connecting piece 32. Is separated from the upper surface of the closed main portion 16 (FIG. 8b). Next, the ring-shaped portion 30 is further forced upward, and the closed main portion 16 of the closed portion 8 is gradually moved upward from the left end side in FIG. 7 is gradually broken from the left to the right in FIG. 7, and thus the cylindrical protruding piece 22 is detached from the discharge cylinder 4 to open the discharge cylinder 4 (FIGS. 8c and d). ). After that, the ring-shaped portion 30 is further forced upward and rearward (rightward in FIG. 7), and the upright protruding piece 36 of the container 34 is accommodated between the closed main portion 16 and the grip portion 18 of the grip portion 8, The closed main portion 16 is maintained in a state separated from the discharge cylinder portion 4 (FIG. 8e). Thus, after the discharge cylinder part 4 is opened, the contents can be poured out through the discharge cylinder part 4 by holding the container 34 and tilting it appropriately. After the required amount of content has been poured out, the closed main part 16 is returned to its original state together with the gripping part 18 of the closed part 4, and the closed main part 16 is further pressed downward to some extent so that the cylindrical protruding piece 22 is inserted into the discharge cylinder 4. Thus, the annular ridge 24 (FIG. 7) formed on the outer peripheral surface of the cylindrical protruding piece 22 is brought into close contact with the inner peripheral surface of the discharge cylindrical portion 4, and the discharge cylindrical portion 4 is temporarily sealed.

  Mainly referring to FIG. 9, after all the contents of the container 34 are consumed, a finger is placed on the ring-shaped portion 30 to force the gripping portion 18 forward (leftward in FIG. 7) and upward. Then, the breaking start edge portion 10a of the breakable thin portion 10 formed in the flange portion 6 is broken, and then the extended portion 10b of the breakable thin portion 10 is broken (FIGS. 9b to 9d). The rupture of the breakable thin portion 10 is started sufficiently from the rupture start edge portion 10a located close to the base edge 20 of the closing portion 8 where the stress is concentrated, and therefore can be performed easily and smoothly. it can. Next, the ring-shaped portion 30 is forced upward and rearward (rightward in FIG. 7), thereby joining the back surface of the flange 6 and the outer surface of the inclined wall 38 of the container 34 rearwardly (rightward in FIG. 7). ), And the dispensing plug 2 is detached from the container 34, thus allowing the container 34 and the dispensing plug 2 to be discarded separately (FIGS. 9e to 9g). The fracture of the joint between the lower surface of the collar 6 and the outer surface of the inclined wall 38 of the container 34 starts from the front edge (the left edge in FIG. 7) where the stress is concentrated, and also the peripheral area of the collar 6 Since it is started after it has been separated from the other parts and is therefore easily deflectable, it can be carried out easily and smoothly.

2: Discharge tap 4: Discharge tube 6: Cage 8: Blocking portion 10: Breakable thin portion 14: Hinge portion 16: Blocking main portion 18: Holding portion 20: Base edge 22: Cylindrical protruding piece 26: Breaking Possible thin-walled connection portion 28: Folded edge 30: Ring-shaped portion 32: Breakable connection piece 34: Container 40: Discharge hole

Claims (7)

Use a synthetic resin pouring stopper that is applied to a paper container with a discharge hole.
A discharge cylinder part, a flange part extending from the outer periphery of the lower end of the discharge cylinder part, and a closing part extending from a base edge connected to the upper surface of the flange part,
The closing portion includes a hinge portion extending from the base edge, a closing main portion extending subsequent to the hinge portion and covering the discharge cylinder portion, and a closing main portion from a folded edge connected to the closing main portion. The closed main part is connected to the discharge cylinder part via a breakable thin-walled connection part,
The flange includes a break start edge extending outside the base edge along the base edge, and an extending portion extending from both side ends of the break start edge to the outside of both side edges of the base edge A breakable thin portion is formed,
The outer peripheral edge of the lower surface or the upper surface of the flange is joined to the outer surface or the inner surface of the container, and the discharge cylinder is communicated with the discharge hole of the container.
A synthetic resin pouring tap.   A cylindrical projecting piece extending into the discharge cylinder portion is formed on the lower surface of the closure main portion of the closure portion, and the outer peripheral surface of the cylindrical projection piece and the inner peripheral surface of the discharge cylinder portion can be broken. The synthetic resin pouring tap according to claim 1, which is connected by a thin-walled connecting portion.   3. The synthetic resin pouring tap according to claim 1, wherein the extending end portion of the grip portion is connected to the upper surface of the closed main portion by a breakable connecting piece.   The synthetic resin pouring tap according to any one of claims 1 to 3, wherein the grip portion includes a ring-shaped portion on which a finger can be hung.   A synthetic resin film is laminated on at least the outer surface of the paper container, and the flange is joined to the container by welding the outer peripheral edge of the lower surface of the flange to the outer surface of the container. To 4. The synthetic resin pouring tap according to any one of items 1 to 4.   The flange portion is rectangular, the base edge is straight, the breakable thin portion formed in the flange portion is a channel shape, and both the break start end edge portion and the extension portion are both The synthetic resin pouring tap according to any one of claims 1 to 5, which is linear.   The synthetic resin pouring tap according to any one of claims 1 to 6, wherein the folded edge extends in parallel with the base edge.

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