JP4745749B2 - Spout - Google Patents

Description

  The present invention relates to a spout that is used by being welded to a pouch-like package or the like, and more specifically, a dress that is prevented from unintentional damage due to an external impact or the like and that is excellent in productivity. It is a type, and relates to a spout excellent in opening operation and resealability.

A spout for welding to a pouch-shaped package and pouring the contents in the package to the outside is generally a two-piece type that is formed by combining a reseal cap formed separately (for example, Patent Document 1). Etc.) and a one-piece type resin (for example, Patent Document 2) are known.
Since the one-piece type spout is formed by integral molding of resin, it does not require a combination of reseal caps as compared with the two-piece type, and is excellent in productivity. Such a one-piece type spout can pour the contents by manually breaking the breakable weakened part formed in the pouring part and removing the tip of the pouring part to form a spout. It is used in repackaging packaging containers that are used by transferring them to other containers mainly containing detergent or shampoo.

JP 2002-104453 A JP 2002-29552 A

However, since the weakened part provided in the one-piece type spout is formed so that it can be easily broken by hand, there is a concern that the weakened part may be broken during distribution of the product, and the contents are poured out. It is desirable to take measures to prevent breakage except when doing so.
In one-piece type spouts, as described above, the spout is formed by hand-breaking the tip of the spout, but the size of the spout (particularly the diameter) is reduced from the point of the content spout. Has a limit, and there is a problem that it is not easy to break the tip of the pouring part, that is, to break the weakened part by hand.

Accordingly, an object of the present invention is to provide a one-piece type spout in which breakage other than the use of the breakable weakened portion formed in the pouring portion is prevented and the weakened portion can be easily broken by hand. is there.
Another object of the present invention is to provide a one-piece type spout having excellent resealability.

According to the present invention, a top plate portion and a skirt portion, a weld portion that is welded and fixed to a packaging material at the skirt portion, an annular side wall formed on the top plate portion of the weld portion, and a pouring portion composed of a top surface, and A spout formed by integral molding of a rotatable U-shaped guard member hinged to two places on the top plate part directly or via a base so as to straddle the pouring part. An annular breakable weakened portion is formed on the annular side wall of the protruding portion, and an annular side wall near the top surface above the breakable weakened portion and a reseal portion made of the top surface are formed. A breakable bridging portion connected to the guard member is formed on the top surface, and the reseal portion is formed so as to be able to fit into a spout formed by breakage of the weakened portion. Is the position of the guard member in the rotational direction Engaging portion is formed, in a state where the guard member is fitted to the spout is removed is resealing unit, wherein the engaging projections engageable with the engaging portion is formed Spout is provided.

According to the spout of the present invention, on the breakable weakened portion of the spout portion, and this rib extending in the axial direction so as to straddle the weakening in the position in the rotational direction side of the guard member is formed, Is preferred.

  The spout of the present invention is a one-piece type that is excellent in productivity, and the tip of the pouring part that is removed at the time of opening is also continuously formed on the guard member, so that unintended weakening of the weakened part is prevented. ing. Furthermore, the tip of the pouring part can be easily and reliably broken by hand, and the opening operation is excellent. Further, the reseal portion can be fixed by the guard member, and the resealed state can be kept stable.

In the spout of the present invention, a U-shaped guard comprising two rotatable vertical members hinged to the top plate part directly or via a base part and one horizontal member connecting the vertical members. It is an important feature that the member is provided so as to straddle the pouring portion, and the upper end of the pouring portion is continuous with the lower surface of the horizontal member of the guard member. As a result, the pouring part is continuous with the top plate part at the bottom and the guard member at the top and is fixed at the top and bottom, so that the pouring part can easily move even when subjected to impacts from the side during distribution etc. Therefore, it is effectively prevented that the breakable weakened portion formed in the extraction portion is unexpectedly broken.
That is, in the present invention, since the U-shaped guard member composed of two vertical members and one horizontal member connecting the vertical members is fixed to the top plate portion so as to straddle the pouring portion, In order to break the weakened part that can break the pouring part, it is necessary to first rotate the guard member so as to break the bridging part formed between the top surface of the pouring part and the lower surface of the guard member. Even when the spout receives an impact or the like, the weakened portion of the extraction portion is not easily broken.

  In addition, after breaking the bridging portion formed between the top surface of the extraction portion and the lower surface of the guard member, the guard member is tilted to the top plate portion side, and the weakened portion that can break the extraction portion is broken, as described later. In addition, it is possible to provide a reseal function by forming a part of the removed pouring part (reseal part) so that it can be fitted into the pouring port formed in the pouring part. . Particularly in a preferred aspect of the present invention, the guard member and the reseal portion can be engaged and fixed in a state where a part of the removed pouring portion (reseal portion) is fitted to the spout, so that the reseal portion is stabilized. It has excellent resealability.

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.
FIG. 1 is a view showing an example of the spout of the present invention, (A) is a top view, (B) is a front view, the right half shows a cross section, and (C) is a side view, and the right half. Indicates a cross section. 2 is a perspective view of the spout shown in FIG. 1, FIG. 3 is a perspective view showing a state in which the guard member of the spout shown in FIG. 1 is rotated, and FIG. 4 is a spout shown in FIG. FIG. 5 is a perspective view illustrating a state in which the weakened portion is broken and the reseal portion is separated, FIG. 5 is a perspective view for explaining a reseal method in the spout shown in FIG. 1, and FIG. It is a perspective view which shows the state by which the spout to show was resealed.
The spout indicated as a whole by 1 generally comprises a welded portion 2, a pouring portion 10 and a guard member 20.

In the spout of the present invention shown in FIGS. 1 to 3, the welded portion 2 includes a top plate portion 3 and a skirt portion 4, and the skirt portion 4 is welded and fixed to the packaging material 30. Ribs 5 are formed on the outer surface of the skirt portion 4. In addition, an opening 6 that is continuous with the extraction portion 10 is formed at substantially the center of the top plate portion 3.
Moreover, the extraction | pouring part 10 consists of the cyclic | annular side wall 11 formed in the circumference | surroundings of the opening part 6 formed in the top plate part 3 of the welding part 2, and a top | upper surface, and the weakened part 12 which can be fractured | ruptured at the upper end of the cyclic | annular side wall 11 A reseal portion 13 is formed through the. The weakened portion 12 is formed with a rib 14 extending in the axial direction so as to straddle the weakened portion 12 on the rotational direction side of the guard member 20 in order to improve the strength of the weakened portion 12.

  The reseal portion 13 has engaging portions 15a and 15b that can be engaged with engaging projections formed on the guard member 20 described later on the side surface of the guard member 20 in the rotation direction, and the upper end of the reseal portion. Is formed with a fitting portion 17 that can be fitted into the spout 16 formed after the weakened portion 12 is broken. The fitting portion 17 has a cylindrical portion 17a having an outer diameter substantially the same as the inner diameter of the spout 16 and a frustoconical engagement that is slightly larger in diameter than the cylindrical portion 17a and can be engaged with the inner surface of the pouring portion. The joint portion 17b is formed in combination.

The guard member 20 is composed of two vertical members 21a and 21b and one horizontal member 22 connecting the vertical members 21, and is provided on the lower end of the vertical members 21a and 21b and the top plate portion 3 of the welded portion. It is integrally molded via a hinge 24 formed between the base 23 and the lower surface of the horizontal member 22 via the tip of the engaging portion 17b (top surface) of the extraction portion 10 and a breakable bridging portion 18. Are continuously formed as a single piece. Engaging protrusions 26a and 26b for engaging with the protruding portions 15a and 15b of the pouring portion after resealing are formed in the recess 25 at the position on the pouring portion side of the vertical members 21a and 21b of the guard member. Yes.
Moreover, in this aspect, the rib 27 is formed in the edge part of the vertical member 21 and the horizontal member 22 of a guard member, and without reducing the mechanical strength of a guard member by forming this rib 27, It is possible to reduce the basis weight of the resin used.
The guard member 20 can rotate around the hinge 24 when the bridge portion 18 formed between the lower surface of the horizontal member 22 of the guard member and the engaging portion 17b is broken (see FIG. 3).

As shown in FIG. 3, the weakened portion 12 can be broken by holding the reseal portion 13 in a state where the bridging portion 18 is broken and the guard member is rotated and tilted to the top plate portion 3 side. When the weakened portion 12 is broken, the reseal portion 13 above the weakened portion 12 is separated from the spout as shown in FIG.
Next, as shown in FIG. 5, the separated reseal portion 13 is resealed by fitting the fitting portion 17 to the spout 16 with the fitting portion 17 turned upside down so that the fitting portion 17 is on the spout side. . At this time, the reseal portion 13 is fitted to the spout 16 in a state rotated 90 ° from the state before separation so that the engaging portions 15a and 15b are positioned on the vertical members 21a and 21b side of the guard member. Thereafter, by rotating the guard member 20 to the vertical position with respect to the top plate portion 3, the engaging portions 15a and 15b are positioned in the recess 25 of the guard member and engaged with the engaging protrusions 26a and 26b. As a result, the guard member 20 is fixed, and the reseal portion 13 is also fixed by the guard member 20. The reseal portion 13 cannot be removed unless the guard member is rotated, and resealability is ensured (see FIG. 6). .

FIG. 7 shows a state in which the spout 1 of the present invention is applied to the standing pouch 30, and the skirt portion 4 of the welded portion 2 is used by being welded and fixed to the heat seal portion 31 of the pouch 30.
As a packaging material to which the spout of the present invention is applied, in addition to a flexible pouch as shown in FIG. 7, it is applied to various packaging materials such as a plastic bag such as an infusion container and a carton container such as a milk pack. be able to. These packaging materials preferably have a multilayer structure having a layer made of a resin that can be thermally welded to the spout as the innermost layer, and other layers are appropriately formed according to the type of contents.

The spout of the present invention is not limited to the specific examples described above, and various modifications can be made.
For example, in the specific examples shown in FIGS. 1 to 7, the guard member is hinge-connected to the top plate portion via the base portion, but of course, the guard member may be directly hinge-connected to the top plate portion.
Further, the reseal portion 13 of the extraction portion 10 shown in FIGS. 1 to 7 has a separate fitting portion 16 near the top surface, but the outer diameter of the reseal portion can be increased without providing the fit portion. It can be resealed to match the inner diameter of the spout.

The cross-sectional shape of the welded portion is not limited to the one shown in the figure, and various shapes can be adopted as long as it can adhere to the packaging material such as a substantially diamond shape with good adhesion. In addition, it is preferable to form ribs or the like in the skirt portion of the welded portion in order to improve the weldability, but it is not necessary to form it.
Further, the cross-sectional shape of the spout at the weakened portion of the annular side wall is not limited to a perfect circle as in the specific examples shown in FIGS. 1 to 7. For example, the long axis is perpendicular to the horizontal member of the guard member. The oval shape in which is formed may be used. As a result, unintended weakening can be prevented from breaking.
Further, the engagement between the reseal portion and the vertical member at the time of reseal is not limited to the embodiment shown in FIGS. 1 to 7, and various embodiments can be adopted as long as the reseal portion and the guard member can be engaged.

The spout of the present invention can be easily joined to the packaging material by using a resin that can be bonded to the packaging material by heat welding such as polyethylene or polypropylene.
The spout can be molded by injection molding using such a resin.

It is a figure which shows an example of the spout of this invention, (A) is a top view, (B) is a front view, A right half shows a cross section, (C) is a side view, A right half shows a cross section. . It is a perspective view of the spout shown in FIG. It is a perspective view which shows the state which rotated the guard member of the spout shown in FIG. It is a perspective view which shows the state which the weakened part of the spout shown in FIG. 1 was fractured | ruptured, and the reseal part isolate | separated. It is a perspective view for demonstrating the resealing method in the spout shown in FIG. It is a perspective view which shows the state by which the spout shown in FIG. 1 was resealed. It is a perspective view which shows the state in which the spout shown in FIG. 1 was applied to the standing pouch.

Explanation of symbols

1 spout, 2 welds, 3 top plate, 4 skirt, 5 ribs, 6 openings,
7 annular protrusion, 10 pouring part, 11 annular side wall, 12 weakened part, 13 reseal part,
14 ribs, 15 engaging parts, 16 spouts, 17 fitting parts, 18 bridging parts,
20 guard members, 21 vertical members, 22 horizontal members, 23 base portions, 24 hinge portions,
25 recesses, 26 engaging protrusions, 27 ribs.

Claims (2)

A welding portion comprising a top plate portion and a skirt portion, the welding portion being welded and fixed to the packaging material at the skirt portion, a pouring portion comprising an annular side wall and a top surface formed on the top plate portion of the welding portion, and straddling the pouring portion In this way, a rotatable U-shaped guard member hinged to two places on the top plate part directly or via a base part is a spout formed by integral molding, and on the annular side wall of the pouring part Is formed with an annular breakable weakened portion, an annular side wall near the top surface above the breakable weakened portion, and a reseal portion composed of the top surface. A breakable bridging portion connected to the guard member is formed, and the reseal portion is formed so as to be able to fit into a spout formed by breaking the weakened portion, and the reseal portion has a rotation direction of the guard member The engaging part is formed at the side position. The guard members in a state of being fitted to the spout is removed is resealing unit, spout, characterized in that the engaging projections engageable with the engaging portion is formed. The spout according to claim 1, wherein a rib extending in the axial direction is formed on the weakening portion of the pouring portion that can be broken, so as to straddle the weakening portion at a position on the rotation direction side of the guard member.

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