JPH0144585B2 - - 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 advance for taking out the contents of the object or lid, 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 content extraction part structure of the container of the present invention includes a base material having a hole for the content extraction port, and a material that is attached to the inner surface of the base material to allow the content extraction part to be removed. an inner patch that closes the mouth hole;
a tab material located on the outer surface of the base material so as to cover the hole for the content extraction port, and affixed to the inner adhesive material through the hole for the content extraction port, the tab material is configured to destroy the inner adhesive material and open the hole for the content outlet by pulling up the inner adhesive material, and the hole for the content outlet includes:
The edge of the rear end portion in the direction in which the tab material is pulled up is substantially perpendicular to the direction, and the length of the edge of the rear end portion is larger than the length of the edge of the front end portion. It is said that

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. This drinking spout 6 is closed by an inner lining material 11 stuck to the inner surface of the base material 5. Moreover, 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 patch material 11 through the drinking spout 6.

In the drinking spout 4 configured in this way,
When taking out the liquid contents, when the tab material 8 is pulled up in the peeling direction 9, the tab material 8 rises and is peeled off from the base material 5, but the inner lining material 11 welded to the tab material 8 is also removed from the tab material. Trying to rise along with 8,
The edge portion of the drinking spout 6 is broken and the drinking spout 6 is opened. However, after the spout 6 opens, the tab material 8
Even if the tab material 8 and inner lining material 11 are pulled up further,
does not peel off at the rear end of the spout 6 for the following reason, and therefore the tab material 8 does not separate from the base material 5. In this way, the rear end 1 of one drinking spout 6
The inner lining material 11 is destroyed in any part other than 2 and allows the opening of the drinking spout 6, while the inner lining material 11 is not destroyed and the tab material 8 is not peeled off at the rear end portion 12. In this invention, the tab material 8
The force required to destroy the inner lining material 11 at any part of the drinking spout 6 except for the rear end in the lifting direction is smaller than the force required to destroy the inner lining material 11 at the rear end 12. This is because it is configured as follows.

The force required to destroy the inner lining material 11 at any part of the drinking spout 6 except for the rear end in the pulling direction of the tab material 8 is the inner lining material 11 at the rear end 12.
In order to configure the inner adhesive material 11 with a force smaller than the force required to destroy it, it is possible to partially change the structure or strength of the inner adhesive material 11, or use various other means. This is achieved by configuring the structure of the mouth portion 4 as described below. That is, as shown in FIG. 3, the width L1 of the spout 6 in the direction perpendicular to the peeling direction 9 of the tab material 8, which forms a straight line in plan view, increases from the tip a toward the rear end 12. . Starting point a to intermediate point b
Until (width 2) is reached, the width L is kept constant, or gradually increased, or the change in the width L is made small,
Further, between the intermediate point b and the rear end portion 12 (width L1), the width L is rapidly increased so that L1>L2. Therefore, the slope of the line forming the edge of the spout 6 is large between the midpoint b and the rear end c.

In the spout part 4 having such a configuration, when removing the liquid contents, when trying to pull 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 here. Next, when the tab material 8 is continuously pulled up, the force required for pulling it up acts in the tangential direction of the edge of the spout 6, and the fracture point gradually moves backward in the peeling direction in plan view, and finally, as shown in FIGS. As shown in FIG. 6, the middle point b of the spout 6 is reached, and the opening of the spout 6 is thereby completed. Further, when the tab material 8 is continuously pulled up, the slope of the tangent to the spout 6 is steep between the intermediate point b and the rear end 12, and the tangential component of the pulling force becomes small, so that the inner lining material The fracture resistance of 11 increases, making it difficult to peel off the tab material 8, or it can be felt that the peeling operation is nearing completion. Finally, when the peeling of the tab material 8 reaches the rear end portion 12, the peeling stops. The reason is as follows. The tensile force against the tab material 8 is the drinking spout 6.
In the section, the force is concentrated on the part along the edge, and the load point moves sequentially to the starting end a, middle b, and end 12, but in each case, the imaginary line perpendicular to the peeling direction in plan view is swallowed. The inner lining material 11 is easily destroyed because it acts concentratedly on the points that intersect with the edges of the mouth 6 (for example, parts a and b), and the breaking stress generated there is extremely large. However, the rear end 12
forms a straight line c-c 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 c-c is the same as that in other parts a in the spout 6. ,b becomes smaller than
It is difficult to destroy the inner patch material 11. Therefore, when the tab material 8 is pulled up, even if the inner lining material 11 is broken at points a-b of the spout 6 and opened, the rear end 1
2 (straight line c-c), no breakage occurs and the tab material 8 does not separate from the base material 5.

According to the results of the experiment, as shown in FIG. 7, the largest force required to break the inner patch 11 at the spout 6 appears at the c-c portion, which is greater than the force required to break the inner patch 11 between a and b. It has become clear that it is much larger and therefore fully exhibits the above effects.

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. This straw insertion hole 26 is formed through the hole 26.
From the front and back of the pouch base material 25, tab material 8, inner adhesive material 1
1, and the structure of this straw insertion portion 24 is the same as that shown in FIGS. 3 to 6.

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.

[Brief explanation of drawings]

Fig. 1 is a plan view of the cup container, Fig. 2 is an explanatory cross-sectional view of the minus part in Fig. 1, Fig. 3 is a plan view showing the contents outlet, and Fig. 4 is an enlarged cross-section of the - part in Fig. 3. Figure 5 is a plan view of the content outlet with the spout open, Figure 6 is an enlarged cross-sectional view of the minus part in Figure 5, Figure 7 is a graph showing changes in peeling force, and FIG. 8 is a front view of the standing pouch. 1... Beverage cup container, 2... Container body, 3
...Lid, 4... Drinking spout, 5... Base material, 6... Drinking spout, 8... Tab material, 9... Peeling direction, 11...
Inner patch material, 21...Standing pouch, 24
... Straw insertion part, 25 ... Pouch base material, 2
6... Straw insertion hole.

Claims (1)

[Claims] 1. A base material in which a hole for a content outlet is formed, an inner lining material stuck to the inner surface of the base material to close the hole for the content outlet, and a and a tab material located on the outer surface to cover the hole for the content extraction port and stuck to the inner adhesive material through the hole for the content extraction port, and the tab material can be pulled up. Therefore, the inner adhesive material is destroyed to open the hole for the content extraction port, and the edge of the rear end portion of the tab material in the pulling direction is 1. A structure for dispensing contents of a container, wherein the structure is substantially perpendicular to the direction, and the length of the edge of the rear end portion is larger than the length of the edge of the front end portion.