JPH0644816Y2 - Paper container - Google Patents

Description

[Detailed Description of the Invention] [Industrial field of application] This school plan relates to a paper container for containing milk and the like.

[Conventional technology]

Conventionally, as this type of paper container, a paper container called a Goebeltop is often used. This Goebel top type paper container has a prismatic shape, and the upper part is folded into a gable roof shape and heat-sealed, and the folding part on one gable side is opened like a spread and the gable side plate. It was configured to open and open.

[Problems to be solved by the device]

However, when the folded part of this Goebel top type paper container is opened, the upper seal part of the gable side plate remains sealed with the upper seal part of the eaves side plate. However, there has been a disadvantage that the upper seal portion of the wife side plate has to be peeled off with a nail or the like, which makes the opening operation complicated.

Therefore, it has been an issue to develop a Gobel-top type paper container that is easy to open without lowering the sealing property.

[Means for Solving the Problems]

The present invention has been made in consideration of the above-mentioned problems, and the upper part is folded into a gable roof shape and heat-sealed. In a Gobel-top type paper container configured to cause the side plate to open, a folding part side edge and a folding part lower edge and a part of the folding part lower edge of the corrugated side plate on the inner surface of the paperboard. A front half cut that does not reach is provided so that the surface layer surrounded by the top half of the front half cut and the folded part can be peeled off, and a back half cut that does not reach the surface of the paperboard is attached to the inner surface of the paperboard corresponding to the surface layer. Provided in a width direction of the side plate, when the folding part is opened, to provide a paper container characterized in that it is configured to peel off the surface layer half having a portion that extends downward from the lower edge of the folding part, the above-mentioned problem To It is intended to consumption.

[Action]

In the present invention, the back half cut on the inner surface side of the paperboard corresponds to the surface layer part provided for delamination at the front half cut, and the part with the back half cut is thinly connected by peeling off the surface layer part. Appearing in a state, or the back half itself appears,
It is possible to raise the wife side plate from this back half cut part. Further, since the folded portion is heat-sealed, the half surface of the surface layer portion having a portion that extends downward from the lower edge of the folded portion is peeled off when the spread portion is opened, and the portion that extends downward is formed as a tab for peeling off the remaining half surface. Will be done.

〔Example〕

Next, the present invention will be described in detail based on the embodiment shown in FIGS. 1 to 6.

In the figure, reference numeral 1 denotes a Gobel-top type paper container, and a paperboard constituting the paper container is formed by laminating a plurality of materials. Then, one folding part 2 of this paper container 1 which is opened
2 has a front half-cut 3 and a back half-cut 4, and the front half-cut 3 and the back half-cut 4 are put in advance in a carton state before the sleeve is assembled as shown in FIG.

The front half-cut 3 is provided so as not to reach the inner surface of the paperboard from the surface of the paperboard, and passes from one end of the upper sealing portion 5a of the end side plate 5 to one side edge of the folding portion 2 and the lower edge of the folding portion 2. And is continuous from the center of the lower edge of the folded portion 2 in a substantially V-shape so that a part thereof extends below the folded portion. The vertical line portion 3a of the front half-cut 3 is substantially located at the boundary with the eaves side plate 6 that is connected to the end side plate 5, and the other end of the horizontal line portion 3b is the boundary with the other eaves side plate 6. It is located on the line (folded ruled line). The portion surrounded by the front half 3 is provided as a surface layer 7 that can be easily peeled off, and the half surface of the surface layer 7 is peeled off from the V-shaped portion 3c continuous with the horizontal line portion 3b as described later. The tabs 8 are sometimes provided so as to be connected to the surface layer portion (folded ruled lines are not shown in the drawing because the folded ruled lines and the half-cut lines overlap each other).

On the other hand, the back half-cut 4 is inserted straight from the inner surface of the paperboard corresponding to the surface layer portion 7 so as not to reach the surface of the paperboard. In the embodiment shown in FIG. And is provided almost at the full width of the wife side plate 5.

In the figure, 9 is a release agent, which is applied on the surface of the paperboard of the folding part 2 so that the upper edge of the application area covers the back half cut part and does not include both sides of the folding part. It is also applied to the corresponding portions of the left and right eaves side plates 6 facing the application area at the time of matching.

Then, the carton containing the front half-cut 3 and the back half-cut 4 is assembled as a sleeve, and at the time of heat sealing after filling and folding the contents, in the folding part 2, the upper seal part 5a and the upper seal part 5a are joined together. The upper seal portion 6a of the eaves side plate 6 and the upper seal portion 6a of the eaves side plate 6 are welded to each other. Note that the release agent application region does not weld even if heat and pressure are applied by heat sealing.

As shown in FIG. 3, when opening the unfolded portion, when the folded portion 2 is opened, the upper and side portions of the surface layer portion are welded to each other. 7 starts delamination, and when it is fully opened, the half surface of the surface layer portion 7 is peeled off. The V-shaped portion 3c is located on the vertical line portion 3a side from the center, and when the half surface of the surface layer portion 7 is peeled off, the lower surface of the folded portion 2 is also peeled off in a triangular shape, and the surface portion 7 is cut off. The dubs 8 arranged in series are formed.

As described above, since the back half-cut 4 corresponds to the inside of the surface layer portion, if the tab 8 is pulled and the surface layer portion 7 is peeled off, the layer not reached by the back half-cut 4 appears in a thin state, That is, the back half section 4 appears in a connected state,
After that, by pushing the end side plate 5 from the width direction, the thin film covering the back half-cut 4 is easily cut, and the end side plate 5 is raised and opened.

The upper edge of the release agent application area is not limited to the above-mentioned embodiment. For example, the upper edge position is shown by 9a in FIG. 2, and the application is made so as to approach the upper edge side of the upper seal portion 5a. The upper edge of the application area of the eaves side plate corresponding to the area can be similarly raised. Further, as shown in FIG. 4, both sides of the back half-cut 4 may be raised so as to be continuous with the upper end of the upper seal portion.

Further, in the above-mentioned embodiment, as shown in FIG. 5, the front half-cut 3 and the back half-cut 4 are inserted into the paper board a so that a thin layer covering the back half-cut 4 remains when the surface layer 7 is peeled off. As shown in FIG. 6, if the back half-cut 4 is inserted into the surface layer 7 as shown in FIG. 6, the back half-cut 4 itself or at least a part of it will appear when the surface layer 7 is peeled off. Can also be configured.

[Effect of device]

As described above, according to the present invention, the upper part is folded into a gable roof shape and heat-sealed, and the heat-sealed fold portion on one of the gable sides is opened in a spread manner to raise the gable side plate. In a Gobel top type paper container configured to be opened, a side edge of a folding part of a board surface of the end side plate, a lower edge of the folding part, and a front half cut that does not reach the inner surface of the paperboard partly from the lower edge of the folding part. The front half-cut and the top layer surrounded by the upper edge of the folded part are provided so that they can be peeled off, and the back half cut that does not reach the surface of the paperboard is provided on the inner surface of the paperboard corresponding to the surface layer. When the folding part is opened, the half surface of the surface layer part having a portion downward from the lower edge of the folding part is peeled off. With pull peeled, results in a tab is formed on one side of the surface layer portion peeling the pull, it is possible to get a good large tabs of consuming fingers. Then, after the simple work of peeling off the surface layer portion with the tab, the end side plate is easily opened by pushing it from the side, and the opening operation becomes extremely easy. In addition, when making a paper container, you can make a front half cut and a back half cut when you put the folding ruled line in the carton, and without lowering the carton production efficiency, a paper container that is easy to open but has a high sealing property It is easy to obtain and has excellent practical effects.

[Brief description of drawings]

FIG. 1 is an explanatory view showing an embodiment of a paper container according to the present invention,
FIG. 2 is an explanatory view showing a carton in one embodiment, and FIG.
The figure is an explanatory view showing a state in which the folded part is opened, FIG. 4 is an explanatory view showing another way of inserting the back half-cut, and FIG. 5 is a way of inserting the front half-cut and the back half-cut in one embodiment. FIG. 6 is an explanatory diagram showing another example of how to insert the front half-cut and the back half-cut. 1 …… Paper container 2 …… Folding part 3 …… Front half-cut 4 …… Back half-cut 5 …… Wife side plate 7 …… Surface layer 8 …… Tab

Claims (1)

[Scope of utility model registration request] 1. A Gobel top having a structure in which an upper part is folded into a gable roof shape and heat-sealed, and a heat-sealed fold portion on one of the gable sides is opened in a double-spread shape to cause the gable side plate to open. In a paper container of a mold, the front edge of the folding side sheet, the front edge of the folding portion, the lower edge of the folding portion, and the lower edge of the folding portion and a part of the lower edge of the folding portion, which does not reach the inner surface of the paperboard, are inserted. And the folding part is provided so that the surface layer part surrounded by the upper edge can be peeled off, and a back half cut that does not reach the surface of the paperboard is inserted in the width direction of the wife side plate on the inner surface of the paperboard corresponding to the surface layer part. The paper container characterized in that the half surface of the surface layer portion having a portion extending downward from the lower edge of the folded portion is peeled off when the sheet is opened.