JPH07112763A - Metallic container for industrial use - Google Patents

Abstract

PURPOSE:To easily open a notched part and take out inner bags from the opened outlet, by forming a notched line in advance on a base material or a body and striking the notched part with a hammer on taking out inner bags. CONSTITUTION:A notched groove 6a with a V-shaped section as a circular cut 6 is formed at the rear face of base plate 3 of a can by use of a V-shaped score process like pressing of a knife or the like. It is favorable that the rest thickness T of the score is made 3/100-8/100mm so as to easily break with hammering from the view point of opening ease and the inner pressure performance of the metallic container. Accordingly, when hammering the part surrounded by the notched groove 6a of the can base plate 3, the bottom of the notched groove 6a is broken at the part where the groove is formed. The broken part is pulled out by inserting a tool from the broken clearance to form a nearly circular opening surrounded by the notched groove 6a. Inner bags can be taken out from the opening.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a metal container having a top plate, a base plate, and a body portion, and a bag accommodated therein, and a flexible opening portion of the bag is provided in the opening portion of the metal container. TECHNICAL FIELD The present invention relates to an industrial metal container that is locked.

[0002]

2. Description of the Related Art Conventionally, a polyethylene-containing metal container having a polyethylene inner bag excellent in contents resistance and having the opening of the inner bag locked to the opening of the container has been widely used for industrial purposes. Has been done. The reason for this is that, by incorporating a polyethylene inner bag with excellent chemical resistance, there is generally no risk of rust or corrosion compared to a steel container without an inner bag, and it can be used for a wide range of chemicals. Because you can. In such a metal container, when the contents in the inner bag are discarded after being taken out from the opening, the inner bag is taken out from the metal container in consideration of environmental problems, and after being separated into the inner bag and the metal container. It is required to be processed or disposed of.

[0003]

However, in the case of the above structure, the opening of the inner bag is firmly locked to the opening of the metal container so that it cannot be taken out to the outside. It was difficult to pull out the inner bag from the opening of the container. Therefore, conventionally, by forming an opening in the metal container by a can opener or the like in the body part or the main plate of the metal container, and then pulling out the inner bag from the opening, by pulling only the inner bag inward from the opening part of the metal container. Since both of them are unlocked and the inner bag is taken out from the metal container, it is very complicated. In order to eliminate this, for example, as shown in FIGS. 10 and 11, an opening is formed in the main plate 23 that is fastened and fixed by the body portion 21 and the fastening portion 25, and a simple tightening machine for closing the opening is used. A metal container in which the outer periphery 29 of the mouthpiece lid 28 is expanded outward and the simple mouthpiece lid 28 is attached to the opening of the base plate 23 so that the base plate 23 side can be easily opened is also proposed, but the number of man-hours for processing the mouthpiece is increased. However, the processing fee was high. Therefore, an object of the present invention is to solve the above problems and to provide an industrial metal container which can be easily opened and from which an inner bag can be taken out.

[0004]

In order to achieve the above object, the present invention has a notch formed in advance on the base plate or the body, and when the inner bag is taken out, the notch is hammered or the like. By tapping, the opening for taking out the bag is formed. That is,
A metal container having a top plate, a base plate, and a body part, the bag being housed therein, and the flexible opening of the bag being detachably locked to the opening of the top plate of the metal container. In such an industrial metal container, the base plate or the body portion has a notch for forming an opening for taking out the bag. In the above structure, the cut portion may be formed of a cut groove formed by V-shaped score processing, or may be formed of a thin portion. In the above structure, the remaining thickness of the metal container material in the cut portion may be set to 3/100 to 8/100 mm. In the above structure, the metal container may be a pail can or an 18 liter can.

[0005]

According to the structure of the present invention, since the notch for the opening for taking out the inner bag is formed in the main plate or the body in advance, when taking out the inner bag, it is surrounded by the notch in the main plate or the body. The inner bag taking-out opening can be easily formed simply by tapping the opened portion with a hammer or the like, and the inner bag can be taken out easily and surely from this opening. Further, if the cut portion is formed by score processing, it can be easily and inexpensively formed.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments according to the present invention will be described below with reference to FIGS.
It will be described in detail based on. As shown in FIGS. 1 and 2, the industrial metal container according to the present embodiment is configured such that a circular top plate 2 is fixed to a top end of a cylindrical body portion 1 by a winding tightening portion 5, and Circular base plate 3 at the bottom of part 1
Is made up of a steel pail can in which a polyethylene inner bag 4 is housed, which is fixed by being wound by a winding tightening portion 5. The top plate 2 has a carrying handle 2b and a circular opening 2a sealed with a lid. As shown in FIG. 3, the opening 2a is fitted with an engaging groove 4b on the outer peripheral surface of the flexible polyethylene ring-shaped opening 4a welded to the upper end opening of the inner bag 4. The opening 4a of the inner bag 4 is locked to the opening 2a of the can. The opening 4a of the inner bag 4 is the opening 2a of the can.
On the other hand, in FIG. 1, the upper part is made hard to be removed, while the lower part is locked so that it can be removed.

As shown in FIG. 1, a cut groove 6a having a V-shaped cross section is formed as a circular cut portion 6 as shown in FIG. A)
As shown in FIG. 5, it is formed by V-shaped score processing which is formed by pressing a knife or the like. The score residual thickness T is preferably 3/100 to 8/100 mm from the viewpoint of openability and the viewpoint of internal pressure performance of the metal container so that the score residual thickness T is easily broken when hit with a hammer or the like. Therefore, when a portion of the base plate 3 of the can surrounded by the cut groove 6a is tapped from the outside with a hammer or the like, a portion where the cut groove 6a is not formed is left and the cut groove 6a
The bottom of the cut groove 6a is broken at the portion where a is formed, a tool is inserted from the broken gap, and the broken portion is pulled out to the outside, thereby forming a substantially circular opening surrounded by the broken cut groove 6a. To form. Therefore, by pulling out the inner bag 4 in the can from the large circular opening formed in the main plate 3, the opening 4a of the inner bag 4 is pulled inward with respect to the opening 2a of the can and bends. Both are released from the lock, and only the inner bag 4 can be taken out from the can.

According to the above-described embodiment, since the notch groove 6a for opening the inner bag is formed in the main plate 3 in advance, when taking out the inner bag 4, the portion surrounded by the notch groove 6a of the main plate 3 is hammered. The inner bag take-out opening can be easily formed simply by tapping it with something like this.
Can be taken out easily and surely. Further, since the cut groove 6a is formed by V-shaped score processing, it is easy to process and the processing cost is lower than that of processing the cap. The present invention is not limited to the above embodiment, but can be implemented in various other modes. For example,
The cut groove 6a has a V-shaped cross section on the inside of the can, but it may be positioned on the outside. In this case, a rust preventive agent is applied to the cut portion. More preferably. Also,
The cut portion 6 is not limited to the cut groove 6a having the V-shaped section shown in FIG.
As shown in (B), a thin portion 6b is formed by applying the elastic reducing property of a material called "Tanikei score", and this portion 6b is used as a cut portion instead of the cut groove 6 described above. You may do it. The thickness of the thin portion 6b has a score residual thickness T of 3/100 to 8/100 m so that the thin portion 6b is easily broken when hit with a hammer or the like.
It is preferably m. Also in this case, the upper side of FIG. 4 (B) may be the back side or the front side of the can. In such a case, the fracture surface of the cut portion does not have a sharp surface, and the safety is excellent. Further, the shape of the inner bag take-out opening surrounded by the cut portion 6 is not limited to the circular shape and the rectangular shape, and may be any shape such as a U shape as long as the inner bag 4 can be taken out. The cut portion 6 is not limited to the base plate 3, and may be formed in the body portion 1 in a substantially rectangular shape as shown in FIG.

The target can is not limited to a pail, but as shown in FIGS. 6 to 9, a quadrangular top plate 12 is attached to the upper end of a quadrangular tubular body 11 by a tightening portion 15. In addition to being fastened by winding, a rectangular base plate 13 is fastened to the lower end of the body portion 11 by means of a fastening portion 15, and the polyethylene inner bag 1
A steel 18-liter can containing 4 may be used.
FIG. 6 shows an embodiment in which a base plate 13 is formed with a notch groove 6 having a substantially rectangular shape and subjected to the above score processing, and in FIG. 9, one rectangular side surface of the body portion 11 has a substantially rectangular score processing notch. An example in which the groove 6 is formed will be shown.
Also in these embodiments, the same effects as those of the embodiments of FIGS. 1 to 5 can be obtained. Since the opening is similar to that of the embodiment shown in FIGS. 1 to 5, the same reference numerals are given and the description thereof is omitted.

[Brief description of drawings]

FIG. 1 is a perspective view of a pail can as an example of an industrial metal container according to an embodiment of the present invention.

FIG. 2 is a side view of the pail can of FIG.

FIG. 3 is an enlarged view of an opening portion of the pail can of FIG.

4 (A) and 4 (B) are respectively cut-out portions, which are enlarged cross-sectional views of cut-out grooves in the pail can of FIG. 1 and enlarged cross-sectional views showing a so-called “valley expression score”.

FIG. 5 is a perspective view of a pail can according to another embodiment.

FIG. 6 is a perspective view of an 18-liter can according to still another embodiment.

7 is a side view of the 18 liter can of FIG.

FIG. 8 is an enlarged view of an opening portion of the 18-liter can of FIG.

FIG. 9 is a perspective view of an 18-liter can according to still another embodiment.

FIG. 10 is a side view of a conventional 18-liter can.

FIG. 11 is an enlarged view of a simple cap lid portion on the bottom surface of the 18-liter can of FIG.

[Explanation of symbols]

1, 11 ... Body part, 2, 12 ... Top plate, 2a ... Opening part, 2
b ... handle, 3, 13 ... base plate, 4, 14 ... inner bag, 4a ...
Openings, 4b ... Engagement grooves, 5, 15 ... Winding fastening parts, 6 ...
Cut portion, 6a ... Cut groove, 6b ... Thin portion.

Claims (6)

[Claims] 1. A metal container having a top plate (2, 12), a base plate (3, 13) and a body portion (1, 11) and containing a bag (4, 14) therein. The flexible opening (4a) of (4, 14) is connected to the top plate (2, 1) of the metal container.
In an industrial metal container detachably locked to the opening (2a) of 2), the bags (4, 14) are taken out to the main plate (3, 13) or the body (1, 11). A metal container for industrial use, characterized by having a notch (6) for forming an opening for. 2. The industrial metal container according to claim 1, wherein the cut portion (6) is constituted by a cut groove (6a) formed by V-shaped score processing. 3. The cut portion (6) is a thin portion (6b).
The industrial metal container according to claim 1, wherein the metal container is composed of 4. The industrial metal container according to claim 1, wherein the residual thickness (T) of the metal container material in the cut portion is 3/100 to 8/100 mm. 5. The metal container is a pail can.
The industrial metal container according to any one of to 4. 6. The industrial metal container according to claim 1, wherein the metal container is an 18-liter can.