JP2838043B2 - Liquid container - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a liquid container, and more particularly to a liquid container in which a thin container made of synthetic resin is provided inside a cardboard case.

[0002]

2. Description of the Related Art As a liquid container used for transporting liquid chemicals such as detergents for business use and various liquid food materials for business use, conventionally, a tin can known as a "Ichito Can" has been widely used. Further, in the case of a liquid container used for transporting a detergent or the like containing a strong oxidizing agent such as sodium hypochlorite, since the tin can is corroded by these acidic chemicals, a chemical resistant synthetic resin such as polyethylene is contained inside. A thin container made of stainless steel was used.

[0003] However, since the tin can after use of the stored liquid is bulky in proportion to its weight, there is a problem that storing, disposing and storing the tin can take a lot of time, effort and cost. The post-treatment takes a great deal of time and labor, so the collection company cannot collect it, making it extremely difficult to collect and dispose of it.

In recent years, as a solution to such a problem, a liquid container having a thin container made of a synthetic resin in a corrugated cardboard case has been used so that it can be easily incinerated after use. I have.

[0005] According to such a liquid container, the cardboard case can be incinerated as a combustible material, and if folded, it is not bulky, so that it can be easily collected and reused. Has the advantage that it can be disposed of.

[0006]

However, when a liquid container having a thin-walled container inside a corrugated cardboard case is used, the above-mentioned advantages are obtained, but a press-down cap cannot be used because the thin-walled container is flexible. Therefore, when storing the liquid in the container, after flowing the thin-walled container through the filling line and filling the container with the liquid, close the mouth with a screw-type cap, and then open the bottom. A very complicated process of putting the cardboard case over the thin container, turning the cardboard case upside down, closing the bottom, turning it upside down again, and carrying it out is necessary. In addition to using liquid filling equipment that can be closed with a formula cap, the filling process is complicated, so the equipment becomes large and complicated, and the equipment cost increases significantly. There is a cormorant problem.

Further, since a thin-walled container is used, a simple and inexpensive press-in type cap used in a conventional tin can cannot be used, and a screw-type cap is required. However, there is a problem that the cost is high and it takes time to open and close the mouth.

[0008] In view of the above-mentioned conventional problems, the present invention provides a liquid container which is formed by mounting a thin-walled container inside a corrugated cardboard case, and which can be closed with a press-down cap and can be filled with liquid as in the conventional case. The purpose is to propose.

[0009]

According to the present invention, in order to achieve the above object, the present invention according to the first aspect is provided with a synthetic resin in a corrugated cardboard case. In the liquid container 1 in which the thin container 3 made of aluminum is housed, the thin container 3 is provided with an opening 5 which can be opened and closed by a cap 11 of a press-fitting type, and an annular engaging portion 8 is protrudingly provided around the outer periphery of the opening 5. Corrugated cardboard case 2 with lower surface as engaging surface 9
The reinforcing cylindrical frame 12 is fitted to the inner surface of the peripheral wall 2a of the first member, and the upper edge of the cylindrical frame 12 is formed as a supporting step portion 13.
A supporting plate 14 having an engaging hole 15 for engaging with the supporting member 14 is provided so that an outer peripheral portion 14a thereof is supported by the supporting step portion 13, and a downwardly bent side piece 14b is extended on the outer peripheral portion 14a to extend the side piece. 14b is sandwiched between the reinforcing tubular frame 12 and the side wall 2a of the cardboard case 2.

Further, in the invention according to claim 2, a window hole 18 is formed in a portion corresponding to the mouth 5 of the thin container 3 in the cardboard case 2, and the mouth 5 is exposed. Is adopted.

Further, in the invention according to claim 3, the support plate 14 is made of a reinforced corrugated cardboard.

Further, in the invention according to claim 4, the keyhole-shaped or daruma-shaped opening 17 having the engaging hole 15 and the insertion hole 16 through which the opening 5 on the side thereof can be inserted is provided on the support plate. 14
The configuration according to claim 1 formed by the method described above is adopted.

Further, in the invention according to claim 5, the structure according to claim 2, wherein an annular frame 19 made of synthetic resin for protecting the peripheral edge thereof is fitted into the window hole 18 of the cardboard case 2. To adopt.

[0014]

According to the first aspect of the present invention, after filling the thin container 3 housed in the corrugated cardboard case 2 with a liquid, the mouth 5 is covered with a press-type cap 11 and pressed down.
The pressing force is received by the support plate 14 through the engagement between the engagement surface 9 of the mouth 5 and the support plate 14, and is supported by the cardboard case 2 through the support step 13. Outer engaging edge 1 of cap 11 by supporting force against pressure
1a is engaged with the engaging surface 9 and can be closed by the cap 11. Therefore, the liquid container 1 in which the thin-walled container 3 is housed in the cardboard case 2 can be closed by the press-down cap 11. The liquid can be filled using the conventional filling equipment as it is.

Further, according to the present invention, since the reinforcing tubular frame 12 is fitted to the inner surface of the peripheral wall 2a of the cardboard case 2 and the supporting step 13 is formed at the upper end edge thereof, the supporting step 13 having high supporting strength is provided. Can be easily formed, the surface strength of the peripheral wall 2a of the cardboard case 2 is improved by the reinforcing cylindrical frame 12, and even in a case where the peripheral wall 2a is stacked in multiple stages and stored, it is possible to secure sufficient strength. In addition, when the bottom is continuously provided at the lower end of the reinforcing tubular frame 12, the strength is further improved.

Further, according to the present invention, the support plate 1
4, the side piece 14b is bent downward to extend integrally with the outer peripheral portion 14a, and the side piece 14b is sandwiched between the reinforcing tubular frame 12 and the side wall 2a of the cardboard case 2, so that the support plate 14 Are not only the outer peripheral portion 14a supported by the supporting step portion 13, but also the side piece 14b
Is sandwiched between the reinforcing tubular frame 12 and the corrugated cardboard case 2, so that the support plate 14
It can be strongly supported on the supporting step 13 without moving, and is further restricted by the side wall 14b integral with the supporting plate 14, thereby preventing the cardboard case 2 from bulging around the side wall 14b. Even if the corrugated cardboard cases 2 are stacked in a multi-stage shape, it is possible to secure a strength capable of preventing occurrence of collapse of the load.

When the lid is opened, the central portion 11 of the cap 11 is opened.
a, the central portion 11a is immersed and deformed, and the outer peripheral engaging edge 11a needs to be disengaged from the engaging surface 9 in conjunction with the deformation, but in this regard, the invention according to claim 1 According to the above, the cap 11 holds the engaging surface 9 of the opening 5, the supporting plate 4 for supporting the engaging surface 9, the supporting step 13 for engaging the outer peripheral edge of the supporting plate 14, and the supporting step 13 as described above. Since the cap 5 is supported by the corrugated cardboard case 2, even when a strong pressing force is applied to the cap 11, the opening 5 for engaging the cap 11 does not sink into the inside, and therefore the central portion 11 a of the cap 11 is strongly pressed. As a result, the central portion 11a of the cap 11 is immersed and deformed by the support force,
The outer peripheral engaging edge 11b of the cap 11 can be detached from the engaging surface 9 in conjunction with this deformation.

According to the second aspect of the present invention, since the opening 5 is exposed from the window hole 18 formed in the cardboard case 2, it can be handled and filled in exactly the same way as a tin can. In some cases, the cardboard case 2
The top flap 2c may be closed after the liquid is filled from the mouth portion 5 with the top flap 2c opened and the cap 11 is closed.

According to the third aspect of the present invention, the support plate 14
Is made of reinforced corrugated cardboard, it is inexpensive and generates less energy at the time of incineration disposal than a synthetic resin plate, so that incineration can be easily performed.

According to the invention of claim 4, the support plate 14
Is formed with a keyhole-shaped or daruma-shaped opening 17 having an engagement hole 15 and an insertion hole 16, so that the opening 5 is inserted through the insertion hole 16 and the support plate 14 is slid with respect to the opening 5. By doing so, the support plate 14 can be easily engaged with the engagement surface 9 of the mouth 5.

According to the fifth aspect of the present invention, by fitting the synthetic resin annular frame 19 into the window hole 18 of the cardboard case 2, the peripheral edge of the window hole 18 can be protected and the appearance of the appearance can be improved. Is good.

[0022]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A liquid container according to an embodiment of the present invention will be described below with reference to FIGS.

Reference numeral 1 denotes a liquid container, which is provided with a thin container 3 made of a synthetic resin such as polyethylene inside a cardboard case 2. In the corrugated cardboard case 2, a bottom flap 2b is continuously provided at four lower edges of a rectangular cylindrical peripheral wall 2a, and an upper face flap 2c is continuously provided at four upper edges. Reference numeral 20 denotes a handle hole. In the vicinity of one corner on the upper surface of the thin-walled container 3, a mouth forming member 4 made of a synthetic resin molded product such as polyethylene is provided.
The synthetic resin sheet 3a forming the entire thin-walled container 3 is welded to the welded portion 4a formed on the outer peripheral edge thereof to form the mouth 5.

The opening forming member 4 has a flange 7 having a thin welded portion 4a formed on the outer peripheral edge thereof at the outer periphery of the lower end of the short cylindrical tube opening 6, and a press-type cap on the outer periphery of the upper end. An annular engaging portion 8 to which the reference numeral 11 is fitted is protruded, and a downwardly engaging surface 9 of an appropriate width is formed on the lower surface of the annular engaging portion 8. An inner lid 1 made of synthetic resin is provided on the inner periphery of the tube opening 6.
0 is fitted. Reference numeral 10a denotes a detachable handle integrally provided inside the inner lid 10.

A reinforcing tubular frame 12 made of cardboard or the like is fitted on the inner peripheral surface of the peripheral wall 2a of the cardboard case 2. The reinforcing tubular frame 12 is formed to be slightly shorter than the height of the peripheral wall 2a, and a supporting step 13 is formed at the upper end located slightly below the upper end of the peripheral wall 2a. In addition, a bottom part may be continuously provided at the lower end of the reinforcing cylindrical frame 12, so that the strength is further improved.

A support plate 14 made of hard corrugated cardboard is provided on the reinforcing cylindrical frame 12, and its outer peripheral edge 14a is supported by engaging with the support step 13. The support plate 14 may be a flat plate as shown in FIG. 2 or FIG.
As shown in FIG. 5, a side piece 14 is attached to the outer peripheral edge 14a of the support plate 14.
b may be bent downward and integrally extended, and the side piece 14b may be sandwiched between the reinforcing cylindrical frame 12 and the side wall 2a of the cardboard case 2. As shown in FIG. 4, the support plate 14 is formed with an engagement hole 15 that can be engaged with the engagement surface 9 on the outer periphery of the mouth portion 5 and a side portion of the engagement hole 15. An opening 17 in the form of a darma hole having a large-diameter insertion hole 16 through which the mouth 5 can be inserted is formed. After the mouth 5 is inserted through the insertion hole 16, the support plate 14 is moved relative to the mouth 5. By sliding, the periphery of the engagement hole 15 of the support plate 14 can be easily engaged with the engagement surface 9. Further, when the opening 17 forming the engagement hole 15 is formed in a keyhole shape instead of a darma shape, the support plate 14 can slide more smoothly with respect to the mouth portion 5.

A window hole 18 is formed in a portion of the upper surface flap 2c of the cardboard case 2 corresponding to the opening 5 of the thin container 3, and the opening 5 is exposed on the outer surface of the cardboard case 2. An annular frame 19 made of synthetic resin and having a dish-shaped hole through which the mouth 5 penetrates is formed at the center thereof is fitted into the window hole 18 to protect the peripheral edge of the window hole 18 and to provide an external appearance. I'm doing better.

In the above configuration, in order to form the liquid container 1, as shown in FIG. 5, the corrugated cardboard case 2 is assembled with the top flap 2c opened, and the reinforcing cylinder frame 12 is fitted therein. Further, the support plate 14 is superposed on the upper surface of the thin-walled container 3 and the engagement hole 1 of the support plate 14
5, the thin container 3 and the support plate 14 are inserted into the corrugated cardboard case 2 to engage the outer peripheral edge 14a of the support plate 14 with the support step 13. Finally, the upper surface flap 2c Is closed, the thin container 3 is provided inside the cardboard case 2, and the liquid container 1 with the opening 5 thereof is formed. The support plate 14 has an outer peripheral edge 1.
4a is integrally formed with a downward side piece 14b.
Not only is the outer peripheral portion 14a supported by the supporting step portion 13, but also the side piece 14b extending from the supporting plate 14 is
And between the cardboard case 2 and the support plate 1
4 can be strongly supported on the supporting step portion 13 without moving even if it receives external vibrations or shocks.
4b to prevent the cardboard case 2 from bulging around,
Even if a large number of corrugated cardboard cases 2 are stacked in a multi-stage manner, it is possible to secure a strength that can prevent the occurrence of load collapse.
In addition, the inner lid 10 and the cap 11 are fitted after filling the liquid.

When filling the liquid, the liquid is filled by flowing the liquid container 1 having the opening 5 through the filling line. Thereafter, the inner lid 10 is fitted to the mouth portion 5, and a press-type cap 11 is put on the inner cover 10 and pressed down, and the pressing force is applied via the engagement between the engagement surface 9 of the mouth portion 5 and the support plate 14. The cardboard case 2 is received by the support plate 14, and the peripheral edge 14 a of the support plate 14 is supported by the support step 13 at the upper end of the reinforcing cylindrical frame 12.
, The outer peripheral engagement edge 11 of the cap 11 is supported by these supporting forces against the pressing force of the cap 11.
b can be engaged with the engagement surface 9 of the mouth 5 by its elastic deformation to close the lid.

The liquid container 1 filled with the liquid is stored and transported and delivered to the customer. In the meantime, the liquid containers 1 may be stacked one on top of the other.
Since the reinforcing cylindrical frame 12 is fitted on the inner peripheral surface, the cylindrical frame 12
As a result, the surface strength of the peripheral wall 2a of the cardboard case 2 is improved, and even when the peripheral wall 2a is stacked in multiple stages, the swelling of the trunk can be prevented and sufficient strength can be secured.

Thereafter, when the customer takes out the liquid from the liquid container 1, the central portion 11a of the cap 11 is strongly pressed to immerse and deform the central portion 11a. 11a needs to be disengaged from the engaging surface 9, but according to the present invention, the cap 11
Are supported by the engaging surface 9 of the opening 5, the supporting plate 4 for supporting the same, the supporting step 13 for engaging the outer peripheral edge of the supporting plate 14, and the cardboard case 2 holding the supporting step 13 as described above. Therefore, even when a strong pressing force is applied to the cap 11, the opening 5 for engaging the cap 11 does not sink into the inside, and therefore, as shown in FIG.
When the central portion 11a of the cap 11 is strongly pressed, the central portion 11a of the cap 11 is immersed and deformed by the above supporting force.
The liquid can be extracted by detaching the lid 1b from the engaging surface 9 and opening the lid, and then removing the inner lid 10.

Thus, according to the present embodiment, the mouth 5 is exposed from the window 18 formed in the cardboard case 2 while the liquid container 1 has the thin container 3 inside the cardboard case 2. It can be handled and filled with liquid in exactly the same way as a tin can, and then the cap 11
The liquid can be filled using the conventional filling equipment as it is.

Further, since the support plate 14 is made of reinforced cardboard, required strength is obtained, the cost is low, the energy generated at the time of incineration disposal is smaller than that of the synthetic resin plate, and the incineration process can be easily performed. Therefore, there is an advantage over other materials. Further, since the reinforcing cylindrical frame 12 is fitted to the peripheral wall 2a of the cardboard case 2 to form the supporting step 13 at the upper end edge, the supporting step 13 having high supporting strength can be easily formed. Further, by fitting an annular frame 19 made of synthetic resin into the window hole 18 of the cardboard case 2, the periphery of the window hole 18 can be protected.

In the above description, an example is shown in which the mouth 5 is exposed from the window hole 18 with the top flap 2c of the cardboard case 2 closed, but with the top flap 2c of the cardboard case 2 opened. After filling the liquid from the mouth 5 and covering with the cap 11, the upper surface flap 2c may be closed.

In the above embodiment, the support plate 14 is formed with a darma-hole or keyhole-shaped opening 17 having an engagement hole 15 and an insertion hole 16 through which the opening 5 can be inserted. As shown in FIG. 6, a notch 25 is formed around the circular engagement hole 15.
It is also possible to elastically press the mouth portion 5 into the engagement hole 15 to engage the same. In this case, the mouth 5 is inserted into the engagement hole 15.
Is not easy to do by hand,
Processing of the support plate 14 is simplified.

[0036]

According to the first aspect of the present invention, when a liquid is filled in a thin container housed in a corrugated cardboard case and the opening is covered with a press-type cap, the pressing force is reduced. The cap is received by the support plate through the engagement between the engagement surface and the support plate, and is supported by the cardboard case through the support step, so that the cap can be easily closed to the mouth by the sufficient supporting force. Therefore, even though it is a liquid container having a thin-walled container inside a cardboard case, it can be closed with a press-down cap, and the liquid can be filled using the conventional filling equipment as it is.

According to the present invention, since the reinforcing cylindrical frame is fitted to the inner surface of the peripheral wall of the cardboard case and the supporting step is formed at the upper edge thereof, the supporting step having high supporting strength can be easily formed. At the same time, the surface strength of the peripheral side wall of the corrugated cardboard case is improved by the reinforcing cylindrical frame, and even in the case where the corrugated cardboard case is stacked and stored, it is possible to prevent bulging of the trunk and secure sufficient strength.

Still further, according to the present invention, a side piece is bent downward on the outer peripheral portion of the support plate to be integrally extended, and the side piece is sandwiched between the reinforcing tubular frame and the side wall of the cardboard case. Therefore, not only is the outer peripheral portion of the support plate supported by the support step portion, but also the side piece extending from the support plate is sandwiched between the reinforcing tubular frame and the cardboard case, so that the support plate is externally supported. Can be strongly supported on the supporting step without moving even if it receives vibrations or shocks from the outside, and furthermore, the bulging of the cardboard case near the side wall is restricted by the side wall integrated with the support plate. To prevent the collapse of the cargo even if a large number of cardboard cases are stacked in a multi-tiered manner. The support capacity remains unchanged even when the .

When the lid is opened, it is necessary to strongly press the central portion of the cap to immerse and deform the central portion, and to disengage the outer peripheral engaging edge from the engaging surface in conjunction with this deformation. However, in this regard, according to the invention according to claim 1, the cap has the engaging surface of the mouth portion, the support plate for supporting the same, the support step portion for engaging the outer peripheral edge of the support plate, and Because it is supported by the cardboard case that holds the supporting step, even when a strong pressing force is applied to the cap, the opening that engages the cap does not sink into the inside, and therefore the center part of the cap is strongly pressed. As a result, the center portion of the cap is immersed and deformed by the supporting force, and the outer peripheral engaging edge of the cap can be disengaged from the engaging surface in conjunction with the deformation.

According to the second aspect of the present invention, since the opening is exposed from the window hole formed in the cardboard case, it can be handled and filled in exactly the same way as a tin can.

According to the third aspect of the present invention, since the support plate is made of reinforced cardboard, it is inexpensive and the energy generated at the time of incineration disposal is smaller than that of a synthetic resin plate, so that the incineration process can be easily performed. .

According to the fourth aspect of the present invention, since the keyhole-shaped or daruma-shaped opening having the engaging hole and the large-diameter insertion hole is formed in the support plate, the opening is inserted into the insertion hole. Then, by sliding the support plate with respect to the mouth, the support plate can be easily engaged with the engagement surface of the mouth.

According to the fifth aspect of the present invention, the periphery of the window hole can be protected by fitting the synthetic resin annular frame into the window hole of the cardboard case.

[Brief description of the drawings]

FIG. 1 is an external perspective view of one embodiment of a liquid container of the present invention.

FIG. 2 is a sectional view taken along the line AA of FIG. 1 in a state in which an upper surface flap of the cardboard case is opened in the embodiment.

FIGS. 3A and 3B are enlarged cross-sectional views of a main part of the embodiment, in which FIG. 3A shows a state in which a cap is closed, and FIG. 3B shows a state in which the cap is opened.

FIG. 4 is a plan view of a support plate of the embodiment.

FIG. 5 is an exploded perspective view of the same embodiment.

FIG. 6 is a partial plan view of a support plate according to another embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Liquid container 2 Corrugated cardboard case 2a Peripheral wall 3 Thin container 5 Mouth 9 Engagement surface 11 Cap 11b Outer perimeter engaging edge of cap 12 Reinforcement cylindrical frame 13 Support step 14 Support plate 14a Peripheral edge of support plate 14b Side piece of support plate 15 Engagement hole 16 Insertion hole 17 Opening 18 Window hole 19 Ring frame

Claims (5)

(57) [Claims] 1. A liquid container in which a thin container made of synthetic resin is housed in a corrugated cardboard case, an opening which can be opened and closed by a press-type cap is provided in the thin container, and an annular engaging portion protrudes around the outer periphery of the opening. The lower surface side is an engagement surface, a reinforcing tubular frame is fitted to the inner surface of the peripheral wall of the cardboard case ,
Tubular frame upper edge of the support step portion and without, by providing a support plate having an engagement hole to be engaged with the engagement surface of the mouth portion outer periphery with thereby supporting the outer periphery by the support step portion on its outer peripheral portion Fold downward
Extend the bending side piece, and connect the side piece with the reinforcing
A liquid container characterized in that the liquid container is sandwiched between a side wall of the liquid container. 2. The liquid container according to claim 1, wherein a window hole is formed in a portion of the cardboard case corresponding to the mouth of the thin container, and the mouth is exposed. 3. The liquid container according to claim 1, wherein the support plate is made of reinforced cardboard. 4. A liquid container according to claim 1, wherein a keyhole-shaped or daruma-shaped opening having an engagement hole and an insertion hole through which a mouth portion of the engagement hole can be inserted is formed in the support plate. . 5. The liquid container according to claim 2, wherein an annular frame made of synthetic resin for protecting a peripheral edge thereof is fitted into a window hole of the cardboard case.