JPH0716590Y2 - Paper liquid container - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention relates to a container for storing milk, juice and the like, and particularly to a liquid container made of paper called a gobel top.

[Prior Art] This type of liquid storage container has a top portion formed like a gable-shaped roof, and when the liquid storage container is opened, the seam at one end of the sealing portion joined to the gas palm is removed. At the same time, peel off to the central part of the sealing part and push the folding piece into a flat state, and further push back both ends of the upper part of the folding piece to push it out so that the center of the upper edge is pushed out, and then continue to Both ends are peeled off to completely peel off the adhesive layer of the folded piece, and both ends of the folded piece are closed so that the center portion is triangularly projected to form a spout.

[Problems to be Solved by the Invention] When opening the liquid container as described above, the peeling work of pushing out the center of the upper edge of the folding piece should be smooth unless the sealing portion is completely peeled off to the central portion. It is often the case that people use their fingers to force them to pry open. This is not only unsanitary, but also the center part of the upper edge of the folding piece is torn, which makes the pouring work difficult. Even if the folded piece is smoothly peeled off, a part of the peeled adhesive layer is attached to the upper edge of the folded piece, which gives a feeling of being unclean.

In order to prevent such a defect, a slit is provided on the upper part of the folding piece serving as the spout (for example, Japanese Utility Model Laid-Open No. 52-62224).
However, the slits are discontinuous and the positions of the slits are not appropriate, so that satisfactory results cannot always be obtained.

The present invention has been made with the object of technically solving the above-described various conventional problems.

[Means for Solving the Problem] As a means for solving the problem, the present invention provides a thermal adhesive plastic film laminated paper container having a gable top with an openable and closable spout serving as the spout. On the outer surface side of the upper end portion of the folding piece 4, both ends are sandwiched between the adhesive layers 4a and the non-adhesive layer 4b is formed, and the non-adhesive layer 4b has a substantially horizontal U-shape serving as the upper edge of the spout. Mold half-cut L
Is formed from the front side, and an adhesive layer 4c is formed on the inner surface side of the upper end portion of the folding piece 4 with a constant width, and the half cut M is displaced along the lower edge thereof in relation to the half cut L and the back side is formed. It is made up of the following.

[Function] In forming the spout, if the folding piece is expanded and both ends thereof are closed, delamination occurs along the half-cut, and the part can be cut to form the spout, and The edges are in a clean state without the dust of the adhesive layer attached.

[Embodiment] Hereinafter, the present invention will be described in detail with reference to the illustrated embodiment.

Reference numeral 1 is a side plate that constitutes the container body. Four side plates are arranged side by side, and a pair of top plates 2 and 3 and folding pieces 4 and 5 that form the top of the container are alternately arranged at their upper edges. Has been done. Such a blank is integrally molded with a heat-adhesive plastic film laminated paper as in the conventional case. 6 is a glue margin provided on one edge. Sealing pieces 2a and 3a are formed on the upper edges of the top plates 2 and 3 so as to be bonded to each other in a palm-like manner. The part sandwiched between the adhesive layers is formed on the non-adhesive layer 4b by applying a release varnish, and a substantially horizontal U-shaped half-cut L which is the upper edge of the spout is formed on the non-adhesive layer part from the front side. Has been done. Also, this folding piece 4
On the inner surface side of the upper end of the adhesive layer 4c is formed with a constant width,
A half-cut M is formed along the lower edge thereof from the back side (inner surface side) with a slight displacement in relation to the half-cut L.

The paper container according to the present invention is formed as described above, and the gluing margin 6 is adhered to the end of the side plate 1 on the opposite side of the gluing margin to form a rectangular tube-shaped container body, and the folding piece is also provided. The gabled tops can be formed by folding in 4 and 5 and adhering the sealing pieces 2a and 3a of the top plates 2 and 3 in a palmed-up state. At this time, only the both ends of the outer surface of the upper end of the folding piece 4 are self-bonded to each other by the adhesive layer 4a.

In order to open this paper container, first remove the seam of one end of the sealing part and the seam of the folding piece 4 which are joined in a palm-like state as in the conventional case, and reach the center of the sealing part. It is peeled off and the folding piece 4 is pushed and spread in a flat state. Next, when both ends of the folding piece 4 are narrowed and the central portion thereof is pushed out, as shown in FIG. 7, delamination occurs at the upper end of the folding piece 4 due to the half cuts L and M on the front and back sides, and the half cut is made. A triangular spout with L as the top edge can be formed. The upper edge of this spout is extremely clean because no adhesive layer is attached to either the front or back.

Further, since the inner surface side of the non-adhesive layer 4b of the folding piece 4 is adhered to the inner surface side of the sealing pieces 2a and 3a, delamination occurs when the spout is formed as described above. It will remain as it is with the part. In addition, in order to reseal the liquid as the content after being poured out, the folding piece 4 may be returned to the original state by folding the pouring port as in the conventional case.

[Effects of the Invention] As described above, according to the present invention, when opening a Gobel-top type liquid container made of paper, both ends of the folding piece serving as a spout are closed so that the upper edge of the half-section is cut off. Since the spout to be formed is formed, the opening work is very easy, and since the peeling residue of the adhesive layer does not adhere to the upper edge of the spout, it has an excellent effect such as being extremely clean. Play.

[Brief description of drawings]

FIG. 1 is a development view of essential parts of a paper container according to the present invention, FIG. 2 is a perspective view of a top part of an assembled paper container, and FIG. 3 is an explanatory view showing a bonding state of the top part. FIG. 5 is a perspective view of the top portion when the folding piece is expanded, FIG. 5 is an explanatory view showing the state of the top portion at that time, and FIG. 6 is a front view of the folding piece, and FIG.
The figure is a perspective view of the top when the spout is formed, and FIG. 8 is an explanatory view showing the state of the top at that time. 1 ... Side plate, 2, 3 ... Top plate 4 ... Folding piece, 4a ... Adhesive layer 4b ... Non-adhesive layer, 4c ... Adhesive layer 5 ... Folding piece, 6 ... Glue margin L, M ... … Half cut

Claims (1)

[Scope of utility model registration request] 1. A thermo-adhesive plastic film laminated paper container having a gable top with an openable / closable spout, and both ends of the outer surface of the upper end of the folding piece 4 serving as the spout are adhesive layers 4a. The part sandwiched between is the non-adhesive layer
The non-adhesive layer 4b is formed with a substantially horizontal U-shaped half-cut L as the upper edge of the spout from the front side, and the inner surface side of the upper end of the folding piece 4 has a constant width. 4c is formed, and a half cut M is formed along the lower edge thereof from the back side with a slight shift in relation to the half cut L.