JPH09226755A - Paper container for liquid with plug - Google Patents

Abstract

PROBLEM TO BE SOLVED: To easily separate and remove a tap part from a container main body when a paper container for liquid with the plug made of plastic for liquid packaging, is recovered after being sorted, recycled or disposed after usage. SOLUTION: In a hole-provided part A0 of a paper container main body A for liquid, being formed of a composite sheet for which a synthetic resin film layer is affixed on the front and rear surface sides of a paper base material sheet layer, the pour-out port part of a plug part B being formed of a pour-out port part 11 and a flange part 12, is fitted, and by affixing the internal surfaces of a superposed part of the internal surface of the container main body A and the upper surface of the flange part 12, the plug part is attached. Then, an extension plate 13 which is extended from the outer periphery of the flange part 12 to the outside, is continuously attached between the affixed part of the internal surface of an upper plate A1 of the container main body and a hut-sealing part A2 , and at the leading end of the extension plate 13, a pull tab 14 protruding from the upper end of the hut-sealing part A2 , is provided.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a liquid paper container made of a composite sheet mainly composed of paper for liquid packaging and a synthetic resin film, and more specifically, it is attached to the container body in consideration of the recyclability of the container. The present invention relates to a liquid paper container with a stopper in which the plastic stopper part can be easily separated from the container body.

[0002]

2. Description of the Related Art A conventional container body of a liquid paper container with a spigot is formed as a container for liquid packaging by a composite sheet in which a synthetic resin film or an aluminum foil is attached to the front and back surfaces of a paper base sheet. ing.

There are various forms of the container body,
Generally, the top of the container body is provided with a spout for spouting the filled and packed liquid contents (spout and a cap for covering the spout). Is generally provided with a spout portion and a flange portion, on the outer surface of the container body,
Alternatively, the mouth plug is inserted from the inside of the container so as to project to the outer surface, and the flange portion is attached and attached to the inner surface of the container.

Since the above-mentioned stopper is usually made of plastic by molding, when the container body is discarded after the container is used, only the plastic stopper is separated and removed from the container body. It is necessary to separately recycle only the container mainly made of paper.

[0005]

However, the operation of separating the stopper from the container body for the above reprocessing treatment is
When trying to remove the spout from the state of the container as it was, it could not be easily separated and required time and labor.

According to the present invention, when a liquid paper container with a spout for liquid packaging as described above is subjected to a separate collection process, a recycling process or a disposal process after use, a composite sheet mainly composed of a paper base sheet is used. Another object of the present invention is to make it possible to separate and remove the plastic plug portion from the formed container body more easily than before.

[0007]

DISCLOSURE OF THE INVENTION According to the present invention, the inside of a perforated portion A _{O of} a liquid paper container body A formed by a composite sheet in which at least a synthetic resin film layer is attached to the front and back sides of a paper base sheet layer. By inserting the spout portion 11 of the spout portion B formed by the spout portion 11 and the flange portion 12 and adhering the superposed inner surface of the inner surface of the container body A and the upper surface of the flange portion 12 to each other. The extension plate 13 to which the spout part B is attached and which extends outward from the outer periphery of the flange part 12 is continuously provided along the inner surface of the upper plate A ₁ of the container body A and the bonding between the palm bonding part A _2. attached Te, a spout with a liquid feed container, characterized in that the distal end portion of the extension up plate 13 provided with a pull tab 14 projecting from the upper end of the rafter bonded portion a _2.

Further, the present invention provides the liquid paper container with a stopper according to the above invention, wherein the container body A is provided with the flange portion 12
Alternatively, it is a liquid paper container with a stopper in which a half cut 21 is cut along the inside or outside of the area where the extension plate 13 is attached.

Further, in the present invention, in the liquid paper container with a stopper according to the present invention, the half cut 21 is cut into the container body A from the sticking surface side where the plug portion B is stuck. A liquid paper container with a spout.

The present invention also relates to the liquid paper container with a stopper according to the above invention, wherein the half-cut 21 is cut only in the paper base sheet layer of the container body A. .

[0011]

BEST MODE FOR CARRYING OUT THE INVENTION

[Overall Outline Description of Container] A liquid paper container with a spout of the present invention, as shown in the overall external perspective view of the container of FIG. 1, is made of a synthetic resin film mainly composed of a paper base sheet for liquid packaging. Container body A formed of laminated composite sheets
(For example, a gable top type) and a plastic plug portion B made of polyethylene resin or polyethylene terephthalate resin or a blended resin thereof attached to the inner surface of the top plate A ₁ (top portion) of the container body A.
It is composed of The spout part B is provided with a cap part C such as a separate cap or an integrated cap so that the cap part can be capped.

As shown in FIG. 1, the spout B has a spout 11 and a flange 12 having an appropriate shape such as a circular shape or a polygonal shape (a portion projecting outward from the lower portion of the spout 11). And the upper surface of the flange portion 12 on the container body A
Is integrally attached to the inner surface of the upper plate A ₁ by an adhesive or heat fusion.

A capping portion C such as a cap is screwed or fitted to the spout 11 from the outside so that the cap can be capped.

[Regarding the composite sheet of the container body] The composite sheet forming the outer surface plates (square tube-shaped four side plates, bottom plate, etc.) such as the top plate A ₁ that constitutes the container body A with a stopper is It is not particularly limited except that it is composed of at least a paper base sheet and one or a plurality of synthetic resin film layers laminated on both sides thereof. For example, as a synthetic resin film layer, a polyethylene film layer (or Polyethylene terephthalate film layer)
May be laminated, and, if necessary, an aluminum foil layer, a polyethylene terephthalate film layer, and a polyethylene layer may be laminated in this order on one of the polyethylene film layers corresponding to the inner surface side of the container body A.

The composite sheet forming the container body A may have various laminated structures other than the above, and is not particularly limited in the present invention.

FIG. 1 is an overall external perspective view for explaining an embodiment of a liquid paper container with a stopper according to the present invention, and FIG. 2 is a partial side sectional view thereof.

[Embodiment 1] As shown in the drawing, the spout B is provided with a spout 11 and a flange 12 having an appropriate shape such as a circular shape or a polygonal shape (extending outward from the lower portion of the spout 11). The upper surface of the flange portion 12 is integrally attached to the inner surface of the upper plate A ₁ of the container body A by an adhesive or heat fusion.

The spigot portion B is formed by inserting the spout portion 11 from the inner surface side of the container body A into an opening portion A _O which is preliminarily formed in the upper surface plate A ₁ and has a circular shape, for example. 12
The upper surface of the container on the inner surface of the upper plate A ₁ of the container body A,
The overlapped inner surface is adhered over the entire circumference of the flange portion 12.

The flange portion 12 is provided with an extension plate 13 which is continuously extended on a part of the outer periphery thereof, and a pull tab 14 is provided at a tip end portion of the extension plate 13.

The extension plate 13 is attached along the inner surface of the top plate A ₁ , and a part of the extension plate 13 on the tip end side is the upper end of the pair of top plates A ₁ , A ₁ facing each other. Of the extension heat-sealing seal portion (top seal portion), which is loaded along the inner surface of the overlapping sticking portion A _{2 in} the overlapping portion and is sandwiched and attached at the time of top sealing. The tip portion is made to project from the upper end portion of the above-mentioned palm-attached portion A ₂ and is provided as a pull tab 14.

The extension plate 13 is formed on the joint pad A ₂
Other than the above, it may be in a non-adhered state or may be releasably attached to the inner surface of the upper surface plate A ₁ .

FIG. 3 (a) is an overall perspective view showing an example of the mouth plug portion B, and FIG. 3 (b) is a side sectional view thereof, showing a hole portion 11a for pouring out liquid contents. The spout 11 provided, the flange 12, the extension plate 13, and the pull tab 14 at the tip thereof are shown.

As shown in the figure, the flange portion 12 is thicker than the extension plate 13, and the extension plate 13 is relatively long, but the thicknesses of the flange portion 12 and the extension plate 13 are as follows. If necessary, the thickness may be set to the same level, the extension plate 13 may be a film having flexibility, and the flange 12 and the extension plate 13 may be formed. The shape is not particularly limited in the present invention.

[Embodiment 2] A liquid paper container with a stopper according to the present invention has a container body A similar to that of Embodiment 1 above.
And a plug portion B, but as shown in FIG.
Either the flange portion 12 of the spout portion B or the extension plate 13 or both of the flange portion 12 and the extension portion 13 are attached to the container body A in the area where the flange body 12 is attached, or outside the area. A half cut 15 (may be a perforated cut) having a shape that follows the outer shape of the plate 13 is cut. The half cut 15 has a continuous line shape, an intermittent line shape, a dotted line shape, or the like.

The half cut 15 is cut, for example, from the inner surface side of the container body A to which the spout portion B is adhered, and at least to the surface layer portion of the inner surface or the surface layer portion thereof. And is cut into the intermediate layer portion.

Alternatively, the half cut 15 is cut only in the paper base sheet layer which is an intermediate layer mainly as the thickness of the container body A.

[About separation and removal of the container body and the plug part]
The liquid paper container with a stopper of the present invention, when not in use,
For example, by peeling off the top seal part of the facing upper surface plates A ₁ and A ₂ of the joint sticking part A ₂ and opening the upper surface plates A ₁ and A ₁ to the left and right to open the closed upper part of the container body A. To do.

Subsequently, the protruding pull tab 14 on the inner surface of the upper plate A ₁ is pulled to the inner surface side, and the entire flange portion 12 and the plug portion B continuous with the extension plate 13 are pulled from the inner surface of the container body A. By peeling it off, the spigot part B is removed from the container body A.
More separated and removed.

In the case of the above-mentioned container in which the half cut 15 is cut, the stopper B can be separated and removed from the container main body A along the half cut 15.

[0030]

EFFECT OF THE INVENTION The liquid paper container with a spout of the present invention does not require a great deal of time and labor as in the conventional case when it is unnecessary after use and is separately collected and recycled or processed for disposal. , It is possible to separate and remove the plastic plug part from the main body of the paper base sheet by pulling up the flange part with a relatively easy operation, and after the use, separate collection process, recycling process and disposal process In this case, the processing operation can be facilitated.

[Brief description of drawings]

FIG. 1 is a perspective view of the entire appearance of a liquid paper container with a stopper according to the present invention.

FIG. 2 is a partial side sectional view of an upper portion of the liquid paper container with a stopper according to the present invention.

FIG. 3 (a) is an overall perspective view of a stopper part attached to a liquid paper container with a stopper according to the present invention, and FIG. 3 (b) is a side sectional view thereof.

[Explanation of symbols]

A ... Container body A _O ... Opening part (hole part) A ₁ ... Outer plate B ... Plug part C ... Cover part 11 ... Spout part 11a ... Hole part 12 ... Flange part
13 ... Extension plate 14 ... Pull tab 15 ... Half cut

Claims (4)

[Claims] 1. A paper substrate sheet layer at least synthetic resin film liquid sheet formed by laminating a composite sheet layer container body A of the hole portion A in the _O spout 11 on front and back surfaces of the
The spout portion 11 of the plug portion B formed by the flange portion 12 and the inner surface of the container body A and the flange portion 12 are inserted.
The spout part B is attached by pasting the inner surface of the upper part of the container and the inner surface of the upper plate A ₁ of the container body A and A stopper which is continuously attached along the bonding between the sticking portions A ₂ and has a pull tab 14 protruding from the upper end portion of the above-mentioned palm-sticking sticking portion A ₂ at the tip of the extension plate 13. Liquid paper container with. 2. A half cut 15 is cut into the container body A along the inside or outside of the area where the flange portion 12 and / or the extension plate 13 are attached.
A liquid paper container with a stopper as described. 3. The liquid paper container with a stopper according to claim 2, wherein the half cut 15 is cut into the container main body A from the side of the sticking surface on which the plug portion B is stuck. 4. The half cut 15 is formed in the container body A.
The liquid paper container with a stopper according to claim 2, which is carved only on the paper base sheet layer.