JPH0115630Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a paper container that can be completely sealed and opened in an elegant manner, and more specifically, a flange whose upper surface is formed by the outer circumference of the container is provided at the opening of the cylindrical container, and The present invention relates to a paper container characterized in that a protruding part having a flat surface on the upper surface is provided on a part of the upper surface of the flange, and a half-cut line is bored on the outside of the protruding part.

As shown in FIG. 1, conventional paper containers of this type generally have a flange 2 formed by rolling the opening wall of the container 1 outward and then bending the entire container horizontally outward and pressing it. Flange 2 welded to the lid
Since the upper surface of the container 1 is continuous with the inner circumferential surface of the container 1, there is a drawback that when the lid is removed, the inner surface of the container is damaged together with the flange.

In order to improve the above-mentioned conventional drawbacks, the present inventor devised paper containers having structures as shown in FIGS. 2 to 7, but these containers also had the following drawbacks.

That is, the one shown in FIGS. 2A and 2B has an anti-adhesive layer 3 interposed on the flange 2, but the one in FIG. is a combination of an anti-adhesive agent 3 and a cut line 5, but since the outside of the half cut line 5 adheres to the lid, the cut line has no effect.In the case of the one in Figure 4, the half cut line 5 is on both sides, so The task of configuring this is difficult, the fifth
6 and 6 have a protruding part 6 protruding from the center of the surface of the flange 2, and a half-cut line 5 is bored on both sides or one side of the protruding part 6, but even though it is easy to peel off from the lid, it is difficult to seal. There is a drawback that the strength of the box is unstable and insufficient.Furthermore, in the case shown in Fig. 7, the half-cut line 5 is provided on the outside, which is one step lower, so it is easy to open and the sealing strength is satisfactory, but it is difficult to peel off the lid. There was a drawback that the inner coating layer of the container 1 was damaged when

The paper container according to the present invention relates to a completely new technology developed in view of the drawbacks of the conventional art.

To specifically explain one embodiment of the paper container according to the present invention with reference to the drawings, in Figs. A flange 7 is formed by horizontally bending the bent end of the flange 7 on the upper surface, and then a partially raised protrusion 8 is formed on the upper surface of the flange 7 by pressing. A half cut line 5 is formed on the outside of 8.

As mentioned above, in the paper container according to the present invention, contrary to conventional containers, the upper surface of the flange 7 is constituted by the outer circumferential surface of the container 1, so even if the lid completely welded to the flange 7 is peeled off, the container remains intact. The effect is that there is no fear of damaging the resin layer inside the container 1, and furthermore, as shown in FIGS. When the anti-adhesive layer 9 is formed using an ink containing silicone or the like, and a polyethylene layer 10 is applied on top of the anti-adhesive layer 9, as shown in FIG. 4 to flange 7 of container 1
When peeled from the polyethylene layer 10, the polyethylene layer 10 is peeled off more easily than the anti-adhesive layer 9, the polyethylene layer 10 is cut along the half-cut line 5, and the whole is peeled off easily and cleanly in an extremely stable state. As shown in FIG. 12, the structure shown in FIG. 11 has a polyethylene layer 10 and an anchor coat layer 1 on the outer surface of the blank board
1. It is also possible to replace it with one in which an aluminum layer 12 and a polyethylene layer 13 are laminated in this order, and a polyethylene layer 14 is laminated on the inner surface of the blank board A.

Since the paper container according to the present invention has the above-mentioned structure, the lid that has been tightly attached to the opening of the container can be easily and stably peeled off from the half-cut line of the flange, and the upper surface of the flange can be removed easily and stably. Since it is made up of the outer surface of the container, there are no peeling scratches on the inner surface of the container, and it is even more effective when the above-mentioned anti-adhesive layer is applied to the outer surface of the blank board. It is something that you have.

[Brief explanation of the drawing]

FIGS. 1 to 7 are explanatory diagrams of a conventional container and an improved version thereof, FIGS. 8 and 9 are explanatory diagrams of the present container, and FIGS. 10 to 13 are explanatory diagrams of other examples. A is a blank plate, 1 is a container, 2 and 7 are flanges, 4 is a lid, 5 is a half-cut line, 6 and 8 are protrusions, 9 is an anti-adhesive layer, and 10, 13, and 14 are polyethylene layers.

Claims (1)

[Claims for Utility Model Registration] (1) A flange is provided at the opening of a cylindrical container by bending the container so that the outer peripheral surface of the container becomes the upper surface at the flange portion, and a stepped shape is provided on the horizontal surface of the upper surface of the flange. 1. A paper container characterized by having a protruding part and having a half-cut line punched on the outside of the protruding part. (2) The above-mentioned cylindrical container is composed of a paper layer and a plastic layer such as polyethylene, and there is a gap between the plastic layer and the paper layer from the joint with the body to the half-cut line, with the protrusion of the flange of the container in between. The paper container according to claim 1, which is characterized by having an anti-adhesive layer provided thereon. (3) Claim 1 of the utility model registration, which is characterized in that the cylindrical container is constructed by sequentially laminating an aluminum layer and a plastic layer on the outer surface of the paper layer.
Paper containers listed in section.