JPS6340746B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a structure for taking out the contents of a can or other container filled with a beverage liquid or the like and sealed. BACKGROUND OF THE INVENTION It is well known that cans and other containers for filling and sealing beverages and other articles are sometimes configured as easy-open containers that can be easily opened.

Such containers generally have a tab material riveted to a lid on which a score is formed, and when taking out the contents, the tab material is pulled up and the can lid etc. is torn from the score to open the drinking spout. Make a hole in the object, lid, or container body in advance for taking out the contents, and then cover this hole with a tab material, etc., and peel off the tab material when taking out the contents. It is configured to open a hole for taking out the contents.

However, in such easy-open containers, there is a risk that the torn pieces and tab material may be separated from the container and discarded after opening, polluting the environment, and there is a need for the development of a technology to counter this problem.

This invention was made in view of the above circumstances, and even after opening the content outlet, the tab material does not separate from the container and remains on the container, thus protecting the environment. It is an object of the present invention to provide a structure for taking out contents of a container without fear of contamination.

Corresponding to this purpose, the contents removal portion structure of the container of the present invention includes a base material in which a hole for a contents removal port and a hole for attaching a tab member are formed adjacently;
an inner lining material that is adhered to the inner surface of the base material to close the hole for the content extraction port and the hole for attaching the tab material; and the content extraction port on the outer surface of the base material. and a tab material that is positioned so as to cover the hole for the contents removal port and the hole for attaching the tab material, and is attached to the inner adhesive material through the hole for the content outlet and the hole for attaching the tab material, By pulling up the tab material, the inner adhesive material is broken along the edge of the content extraction hole to open the content extraction hole; In a parallel projection plane, the maximum length of the edge portion of the edge of each of the holes that is perpendicular or almost perpendicular to the line of action of the force that pulls up the tab material is longer than that of the hole for the content outlet. It is characterized in that the hole for attaching the material is larger.

The details of this invention will be explained below with reference to the drawings showing one embodiment.

In FIGS. 1 and 2, reference numeral 1 denotes a beverage cup container. The beverage cup container 1 has a container body 2 with an open top end and a lid 3 that is attached to the top end of the container body 2 to close the open top end. It consists of. This lid 3 is formed with a drinking spout 4 which is a mouth for taking out contents. The structure of the spout 4 is particularly shown in detail in FIGS. 3 and 4. That is, a drinking spout 6 is formed through the base material 5 constituting the lid 3, and a tab material attachment hole 7 is formed adjacent to the drinking spout 6 through the base material 5.
The spout 6 and the tab material attachment hole 7 are aligned in the peeling direction 9 of the tab material 8, which is a straight line in plan view, and the tab material attachment hole 7 is located behind the spout 6. The drinking spout 6 and the tab material attachment hole 7 are closed by an inner lining material 11 stuck to the inner surface of the base material 5. Further, a tab material 8 is stacked on the outer surface of the base material 5, and this tab material 8 is thermally welded to the inner lining material 11 through the drinking spout 6 and the tab material attachment hole 7.

In the drinking spout 4 configured in this way,
When taking out the liquid contents, when the tab material 8 is pulled up, the tab material 8 rises and peels off from the base material 5, but the inner lining material 11 welded to the tab material 8 also accompanies the tab material 8. It tries to rise, breaks at the spout 6, and the spout 6 opens. However, even if the tab material 8 is further pulled up and the spout 6 is completely opened, the tab material 8 and the lining material 11, which are stuck together at the tab material attachment hole 7 while sandwiching the base material 5, cannot be attached to the tab material. Separation does not occur in the hole 7 for the following reason, and therefore the tab material 8 does not separate from the base material 5.

In this way, on the other hand, the inner patch material 11 is placed at the spout 6.
In this invention, the inner lining material 11 is not allowed to break and the tab material 8 is peeled off in the tab material mounting hole 7, and the opening of the spout 6 is allowed. The force required to destroy the inner adhesive material 11 is applied to the inner adhesive material 11 at the drinking spout 6.
This is because it is designed to be greater than the force required to destroy it.

In order to make the force required to destroy the inner lining material 11 in the tab material attachment hole 7 larger than the force required to destroy the inner lining material 11 in the drinking spout 6, the structure of the inner lining material 11 and the Although it is conceivable to partially change the strength or various other means, this is achieved here by configuring the structure of the spout portion 4 as described below.

That is, as shown in FIG. 3, the maximum widths L2 and L1 of the drinking spout 6 and the tab material mounting hole 7 in the direction perpendicular to the peeling direction 9 of the tab material 8, which forms a straight line in plan view, are as follows.
Let L1>L2.

In the spout part 4 having such a configuration, when removing the liquid contents by pulling the tab member 8 to peel it off, the pulling force is first applied to the starting end a of the spout 6. The initial opening is formed there. Next, when the tab material 8 is continuously pulled up, the force required for pulling it up acts concentratedly on the part b along the edge of the spout 6, and the broken point gradually moves backward in the peeling direction in plan view, and the broken part gradually moves to the rear in the peeling direction in plan view. The rear end c of the spout 6 is reached, and the opening of the drinking spout 6 is thereby completed. When the tab material 8 is pulled up further, the tab material 8 continues to peel off, but the peeling occurs at the starting end d of the tab material mounting hole 7.
Peeling stops when reaching this point.

The reason is as follows.

The tensile force on the tab material 8 acts intensively on the portion along the edge of the spout 6, and the load point moves sequentially to the starting end a, the middle b, and the final end c, but in any case. A point where an imaginary line perpendicular to the peeling direction in a plan view intersects with the edge of the spout 6 (for example,
The lining material 11 is easily destroyed because it acts intensively on parts a, b, and c, and the breaking stress generated there is extremely large. However, since the starting end d of the tab material mounting hole forms a straight line perpendicular to the peeling direction in plan view, the tensile force acts in a distributed manner on that line, and therefore the breaking stress generated in this part is the same as that at the spout 6. , and it is difficult to destroy the lining material 11. Therefore, when the tab material 8 is pulled up, even if the lining material 11 is broken at the drinking spout 6 and opened, the tab material attachment hole 7 is not broken, and the tab material 8 is separated from the base material 5. There's nothing to do.

According to the results of the experiment, as shown in FIG.
In this case, the greatest force required to break the inner patch 11 appears at the d part, but the latter is much larger than the former, and it is therefore clear that the above effect is fully exerted. There is.

Furthermore, even if the spout 6 does not have an elliptical shape as shown in the figure, but instead has a rectangular shape with sides perpendicular to the peeling direction in plan view, the maximum width L2 is greater than the maximum width L1 of the tab material mounting hole 7. Since the breaking stress is larger at the spout 6 for the same tensile force, separation of the tab member 8 can be prevented while allowing the spout 6 to open as described above.

Although the above description is an embodiment in which the present invention is applied to the contents outlet portion of a cup container, the present invention is not limited to the above embodiment and can be applied to various types of containers. FIG. 8 shows an embodiment in which the present invention is applied to a straw insertion portion of a standing pouch. A tab material attachment hole 27 is formed through the pouch base material 25, and both holes 25, 27 are closed with a tab material 8 and an inner lining material 11 from the front and back of the pouch base material 25. Figures 3 to 6
It is the same as shown in the figure.

As is clear from the above explanation, according to this invention, the torn pieces and tab material do not separate from the container after the content outlet is opened, and are therefore discarded separately from the container, polluting the environment. It is possible to obtain a structure of an easy-to-open container for taking out the contents without fear of the contents being removed.

In particular, in this invention, a hole for a content outlet and a hole for attaching a tab are formed adjacent to each other in the base material, and a tab material and an inner lining material are pasted through the hole for a content outlet to attach the contents. The tab material is attached to the hole for the content outlet, and the same tab material and inner lining material are pasted through the hole for the tab attachment to attach the tab material to prevent separation. The properties of the two adhesion parts, the adhesion for attaching the tab material and the adhesion for preventing separation, are the same, reducing restrictions on the selection of materials used and increasing the number of steps in the adhesion process. To facilitate the manufacture of container lids without causing any damage.

Moreover, the mounting strength for preventing separation of the tab material can be easily adjusted by simply selecting the shape of the tab mounting hole.

[Brief explanation of drawings]

Fig. 1 is a plan view of the cup container, Fig. 2 is a front view of the cup container, Fig. 3 is a plan view of the contents outlet, Fig. 4 is an enlarged cross-sectional view of the negative part in Fig. 3, and Fig. 5 6 is a plan view of the contents outlet portion with the drinking spout opened, and FIG. 6 is the − in FIG.
FIG. 7 is a graph showing changes in peeling force, and FIG. 8 is a front view showing the standing pouch. 1... Beverage cup container, 2... Container body, 3
... Lid, 4 ... Drinking spout, 5 ... Base material, 6 ... Drinking spout, 7 ... Tab material installation hole, 8 ... Tab material, 9
... peeling direction, 11 ... inner patch material, 21 ... standing pouch, 24 ... straw insertion part,
25...Pouch base material, 26...Straw insertion hole, 27...Tab material attachment hole.

Claims (1)

[Claims] 1. A base material in which a hole for a content outlet and a hole for attaching a tab material are formed next to each other, and a hole for a content outlet and a tab member attached to the inner surface of the base material. an inner lining material that closes the hole for attaching the material;
It is located on the outer surface of the base material so as to cover the hole for the content outlet and the hole for attaching the tab material, and is pasted to the inner adhesive material through the hole for the content outlet and the hole for attaching the tab material. and a tab material attached to the material, and by pulling up the tab material, the inner lining material is destroyed along the edge of the content extraction hole, and the content extraction hole is opened. The maximum value of the length of the edge of each hole that is perpendicular or substantially perpendicular to the line of action of the force that pulls up the tab material in a projection plane parallel to the base material is A structure for taking out contents of a container, characterized in that the hole for attaching the tab material is larger than the hole for taking out the contents.