WO1980002410A1

WO1980002410A1 - Easy-to-open closure for container

Info

Publication number: WO1980002410A1
Application number: PCT/JP1979/000116
Authority: WO
Inventors: K Tanuichi
Original assignee: K Tanuichi
Priority date: 1979-05-09
Filing date: 1979-05-09
Publication date: 1980-11-13

Abstract

Easy-to-open closure for container in which a closure may be pried and teared by the use of an opening piece such as a metal coin or the like. It comprises a special structure allowing a safe securing of the closure body and opening piece after opening. The closure is further provided with a vent for preventing any hazard caused by the internal pressure prevailing in the container upon opening.

Description

Specification

Easy opening container lid

Technical field

The present invention relates to a simple beverage used for soft drinks, oils, and other packaging and containers.

It is related to the 5-opening lid.

Background technology

Conventionally, the lid of this type of container has been used to open with a tearing method! However, most of the soft drink cans, which are currently widely marketed, are equipped with a lid of this structure. A small number of dozens of can lids are also manufactured and sold by the push-in open method.These container lids can be opened by means of easy removal. It is all about being opened by means of pulling open or pushing. However, various problems have been pointed out from the point of view of the user and further from the social point of view regarding these can lids. A summary of the major issues can be summarized as follows.

(1) Torn the can lid] Opening by the method or the pushing method, as long as the force required for the opening is as high as possible] 3 It is low and it should be ²⁰ pieces. This is because there is a limit to the power that can be supplied by the user]), and if a large force is required for the opening, the opening of the container can be performed if the opening is not possible. Even so, it is possible that the hands and fingers may be damaged too much, which is dangerous. Especially, if the opening is unintended, it should be 25 or more depending on the internal and external conditions.]?

'' ΟΛΊΡΙ But.

(2) After the can lid is opened, safety is ensured so that the green of the opening remains sharp and does not hurt the user of the can. This problem often occurs when cans and the like are torn with a can opener5], but it should be taken into consideration from the viewpoint of user protection. In addition, this problem can be applied not only to the edge of the opening portion, but also to the edge of the torn opening piece. In other words, the best safety measure for the can lid is if the safety measures are taken for both the opening and the opening piece:

(3) After opening the can lid, the opening piece must separate from the can body. This is because it is difficult to collect if the opening piece is detached from the main body of the can], and if it is left, it will step on it]), children play with it], and others will be damaged etc. Pollution such as livestock dying by eating it incorrectly as food

From the fact that has occurred in the I ⁵ reality, is particularly Ru problem that is demanded recently you in this kind of can lid.

(4) In order to allow the can lid to open explosively due to the internal pressure of the can, a depressurizing device must be provided for the cannula if the internal pressure is taken into account. The danger of opening is not only caused by the structure of the can, but also by the opening.

The inventor of the present invention has previously filed a patent application relating to the present invention as “a tearable lid and a method for producing the lid” in order to ensure the safety of the container lid. (JP, A, 52-024430)

25 The lid of this invention has the structure shown in Fig. 1! ), As shown in Figure 2.

C-.V.P1

,, ^{v: i> 0} The can is opened by a method. In other words, an annular deep drawing formed on a board 1 made of sanan material 1 U-shaped and rectangular grooves 1

At the bottom 3 of the slab, the same plate 1 is further folded into three layers to form a caulked layered portion 4, and a tearing-off portion in which a cutting guide line 5 is provided on the front surface within the range of the layered portion. It ’s a lid from the one that ’s formed! ) 、 Tanan is a ring

Insert a hard piece into the groove 2 and incline it by means such as tilting it.

By pressing the inner wall 7 of the groove 2, the cutting guide line 5 is torn, and the open piece 8 existing inside the annular groove 2 is removed, or only a part thereof is torn to open. With such a lid, the user of the can can

The opening can be made with a relatively low force since the opening can be made using the lever's principle with the piece ό as a lever and the upper corner 9 of the annular groove 2 as a fulcrum. In addition, since the finger touches the cutting guide line 5 directly at the time of opening, safety is ensured. Well, after opening

Assuming the state, the tearing part 11 left in the container 10 is a thin plate.

Fold]? The folded part is pressed against the outside of the tip 12

It is extremely safe because it remains in a tightened state. Further, the cutting guide line 5 is circulated around the lid of the container.

By keeping it discontinuous, the opening piece 8 will be

It is also possible to leave from 10. Thus, various advantages

The following problems were also left in the lid that provided the following. One of them is that after opening, a sharpened portion remains in the tearing part 15 of the opening piece 8

To prevent damage if the container user touches it.

This leaves a danger. This is especially true when the user opens the container.

D grabbed the piece and transported it.

Is assumed. Another problem is that such lids

PI

^(J Toka High When used as a container to which internal pressure is applied, it can withstand enough under normal conditions, but at the moment when the cutting guide line is locally ruptured by the hard piece ό That is, the opening piece portion opens at once in an explosive manner. In particular, when the cutting guide line is provided on the entire circumference, it is extremely dangerous because the opening piece may be blown off.

Disclosure of the invention

The present invention has been developed to solve the above problems while keeping the advantages of the prior art as it is. 10 Embodiments of the present invention will be described with reference to the drawings. Will be explained.

An embodiment of the present invention is shown in FIGS. Here, this simple opening container lid is an annular deep drawing formed on a thin plate 14 which is a lid material! ) With processing U-shaped rods 15 At the bottom 10 of the rectangular groove 15, the thin plate 14 is further folded in three layers! ) Folding, caulking layered part

15 17 is formed, and further, a tearing portion is formed on the front surface 18 of the layered portion 17 with a cutting guide line 19 formed.] And the opening piece 20 inside the annular groove 15 is formed. The inner wall of the groove 21)) a deep recess 22 is formed, and the outer edge of the opening piece 20 is formed as a folded upright annular flange 23]. This simple opening container lid is opened in the mode shown in FIG. 5 and FIG. (This is the same as the content disclosed in the background art.) That is, when the hard small piece 24 is inserted into the annular groove 15 and inclined, the inner wall 25 of the annular groove 15 is pressed. [3] The cutting guide line 19 is torn, and the opening piece 20 existing inside the annular groove 15 is raised to be opened. In such an operation, the upper corner 20 of the annular groove 15 can be opened with a relatively low force because it can be opened using the fulcrum and the lever principle. It is clear that safety can be ensured at the time of opening because the mouth can be opened and the finger etc. directly touches the cutting guide line]? These are different from the effects described in the background art. . Rather-the gist of the present invention is the effect after opening. That is, in the simple open container 5 shown in the present embodiment, the tearing portion 27 of the lid body remaining on the container side after opening has a sharpened portion at the tearing end of the layered portion 17. Since it is located on the outside, the safety for the user of the container is sufficiently ensured as in the background art, but the tearing end 29 of the opening piece 20 is further upright. With the piece joined to 25, the opening piece 20 is raised and 剝 is removed.

Therefore, the cracked end 29 can be prevented from directly touching the user's finger or the like, and safety can be secured. In particular, when the cutting guide line 19 is formed near the root of the inner wall 25, the risk that the sharp portion is almost exposed to the user can be avoided. Thereby, the simple opening container lid according to the present invention can be used for both the lid body and the opening piece.

I S The safety is ensured at the cleaved part! ), This type of lid is a complete technical solution for its safety.

In the easy-opening container lid of the present invention, the cutting guide line may be partially discontinuous without surrounding it. Cut in this way

^{If a} guide line is formed, even when the opening piece is raised and opened, the opening piece will be left on the lid body at the discontinuous portion of the cutting guide line. Can be prevented from being separated. Even in this case, the lid body and the opening piece are very convenient because the safety is ensured.In the present invention, the container is opened after the pressure inside the container is first released ²⁵ times by the way of applying the cutting guide line. Enable. Example of this technology Are shown in FIGS. 7 to 9. That is, as shown in FIG. 7, the discontinuous container 52 is provided with a discontinuous portion 52 without circumventing the cutting guide line in the simple opening container, and has an appropriate length in the discontinuous portion 32. From the one having formed the pressure release cutting guide line 55 having The opening means of this lid is also made by using a hard small piece similarly to the above-mentioned simple opening container lid. First, the cutting guide line 53 for depressurization is torn. In this case, a single operation will be sufficient because it only tears the short cutting guide line.This operation opens the lid only at the part where the cutting guide line 53 for depressurization is applied, as shown in Fig. 9. Inside air flows out through the small holes 34, and the internal pressure of the container is equal to the external pressure. Furthermore, in this case, a situation in which the opening piece 55 blows off explosively never occurs. Because the cutting guide line 51 is not provided on both sides of the extension line 53 for depressurization, tearing may progress. It is. The second operation is an operation of tearing off the cutting guide lines 51 other than the cutting guide line 33 for depressurizing.], Thereby opening the stem as shown in FIG. Needless to say, even in the completed opening state, the opening piece 55 remains attached to the sand body 3 at the discontinuous portion 2 of the cutting guide line.

It is clear that the technical concept relating to the cutting guide line for depressurization is not only applied to the simple opening container lid according to the present invention, but also to the lid shown in the background art. It is. The state before the opening is as shown in FIG. 10. However, the opening means may be opened from the pressure release cutting guide line 37 in the same manner as described above! ), It is clear that similar results can be obtained.

Brief explanation of drawings

, '-iO ^tA U CMPI Fig. 1 is a perspective view and a cross-sectional view of a principal part of a simple opening container lid according to the background art. Fig. 2 is a perspective view and a cross-sectional view of a main part showing an opening state of the lid, and Fig. 5 is a simplified opening container lid according to the present invention. Perspective view and cross-sectional view of main part, Fig. 4 is main part of Dosan. Enlarged cross-sectional view Fig. __5 is a perspective and cross-sectional view of main part showing the open state of the same plum, and Fig. 6 is an enlarged main part showing open state. FIG. 7 is a perspective view and a main part cross-sectional view showing the simple-opened container of the present invention, FIG. 8 and FIG. 9 are a perspective view and a main part cross-sectional view showing the open state of the lid, and FIG. 1 is a perspective view and a sectional view of a main part of a simple opening container according to the present invention.

In each figure, 1 is a board made of bamboo material, 2 is an annular groove, 3 is a bottom, 4 is a 10-layer part, 5 is a cutting guide line, ό is a hard piece, 7 is an inner wall, and 8 is an open piece. , 9 is a corner, 10 is a container, 11 is a tear, 12 is a tip of a bead, 15 is a tear part of an opening piece, 14 is a thin plate made of a lid material, and 15 is a ring. Groove, 10 is the bottom, 17 is the layered part, 18 is the front face, 19 is the cutting guide line, 20 is the opening piece 21 is the inner wall of the groove, 22 is the recess, 25 is the upright annular flange, 24 is Hard, small IS piece, 25 is the inner wall of the groove, 20 is the corner, 27 is the tearing part of the lid body, 28 is the folded part, 5 is the bent end, 29 is the tearing end of the opening piece, 30 is the corner angle, 31 is a cutting guide line, 52 is a discontinuous part, 55 is a cutting guide line for depressurizing, 54 is a small hole, 55 is an opening piece, and 56 is a lid body.

BEST MODE FOR CARRYING OUT THE INVENTION

20 The present invention is best practiced in the state shown in FIG. It is opened as shown in the state shown in Fig. 7 and the effect can be seen remarkably. In other words, the simple-opened container according to the present invention guarantees complete safety even after opening, and can also cause damage to the user because pressure can be released even at the time of opening. In addition, the opening can be performed with relatively small force.) This includes technologies that have solved the problems that have been requested.

Industrial applicability

INDUSTRIAL APPLICABILITY The present invention is the most suitable technical idea for the lid of a wide-ranging can used in soft drinks, oils, and other packaging containers. The present invention is extremely rich in industrial applicability.

OMPI WIPO

Claims

The scope of the claims

1. An annular deep drawing formed on a thin sheet of lid material. The sheet is folded into three layers at the bottom of a U-shaped and rectangular groove with i? Processing.] 3 folded and crimped, within the same layer part A cleavage line with a cutting guide line is formed on the surface of the groove, and a concave portion is formed deeper than the inner wall of the annular groove in the opening piece inside the annular groove. From the shape of an upright annular flange, a cutting guide line is formed by inserting a hard piece into the annular groove and pressing the inner wall of the annular groove by means such as inclining. A simple-opening container lid characterized in that safety is ensured on both sides of the opening part of the lid body and the opening part which remain on the container side when the container is torn and opened.

2. The simple opening container lid according to claim 1, wherein the cutting guide line is not circulated and is partially discontinuous.

3. The simple opening container according to claim 1, wherein the cutting guide line is partially discontinuous without rotating, and a cutting guide line for depressurization is provided in the discontinuous portion.

4. U-shape with annular deep drawing formed on a thin sheet of lid material. At the bottom of the rectangular groove, the thin sheet is further folded in five layers! ) Because it is folded and formed a ruptured part with a cutting guide line on the front side within the same layered part] 9, the cutting guide line is partially discontinuous without surrounding it. A simple opening container lid with a cutting guide line for pressure relief in the discontinuous part.