JP2014177290A - Container opening sealing tool and container - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a container opening sealing tool excellently exhibiting the resilience of a naturally curling film, and a container including the same.SOLUTION: A container opening sealing tool 1 includes a naturally curling outer film 2 and an inner film 3 superposed on the outer film 2. A cylindrical part 10 and a non-cylindrical part 12 are formed by selectively sealing in a fixed length in at least two sealing places between the outer film 2 and the inner film 3. The outer film 2 is curled so as to roll the inner film 3 in an area including the non-cylindrical part 12 with a terminal end of the cylindrical part 10 and a start end opposite to the terminal end.

Description

  The present invention relates to a container opening sealing tool and a container including the same.

Various tools such as a screw cap, a pinch cock, a fastener chuck, and a cork stopper are known as tools for sealing the openings of various containers. In any case, the opening of the container can be sealed only when the user performs an operation of “closing” by itself, and cannot be automatically sealed.
On the other hand, it is known that a container having a curled flat tube is provided at the outlet of the container as a container that automatically seals the outlet of the container (see, for example, Patent Documents 1 and 2). In this type of container, after the contents are discharged, the cylindrical object is curled by returning to its original shape, and the discharge port is automatically closed.

U.S. Pat. No. 4,312,689 International Publication No. WO2012 / 068575

However, in any of the sealing devices proposed in Patent Documents 1 and 2, a flat cylindrical object is entirely side-sealed along the curl direction. Due to this side seal, there is a problem that the cylindrical object is difficult to curl and its restoring force is poor.
Then, the objective of this invention is providing the container opening sealing device which can exhibit the restoring force of the film which curls naturally, and a container provided with the same.

Another object of the present invention is to provide a container opening sealer that can improve the hermeticity of a container by utilizing the restoring force of a film that naturally curls.
Still another object of the present invention is to provide a container that can exhibit an excellent sealing degree by including the container opening sealing device of the present invention.

  In order to achieve the above object, the invention according to claim 1 is characterized in that an outer film that naturally curls, an inner film superimposed on the outer film, and at least two seals between the outer film and the inner film. A cylindrical shape that is formed by selectively sealing at a certain length at a location, and is partitioned by the outer film and the inner film with the seal location as both ends, and serving as a passage for taking in and out the contents of the container And a non-cylindrical part formed without sealing between the outer film and the inner film, the non-cylindrical part being the end point, and the opposite side of the end point being the starting end. The outer film is curled so as to entrain the inner film in the region including the cylindrical part, and the cylindrical part is attached to the inner periphery of the opening of the container. Te, and characterized in that a sealable opening of the container, a container opening closures.

  According to this configuration, the curled region of the container opening sealer includes a non-cylindrical portion that is not selectively sealed between the outer film and the inner film. In this non-cylindrical portion, unlike the cylindrical portion, the outer film that naturally curls is in a free state without being restricted in movement by the seal of the inner film. Therefore, the curl restoring force of the outer film can be sufficiently exhibited in the non-cylindrical portion. As a result, when this container opening sealing tool is attached to the inner periphery of the opening of the container, the degree of sealing of the container can be improved by utilizing the restoring force of the outer film.

  According to a second aspect of the present invention, the outer film and the inner film have a quadrangular shape having two sides that are parallel and overlap with each other, and the cylindrical portion and the non-cylindrical portion are connected to each other along the two sides. The outer film and the inner film are sealed at the two corners on the start end side in a state where the curled outer film is 0.5% to 3% longer than the inner film. The container opening sealing device according to claim 1, wherein the container opening sealing device is fixed.

  According to this configuration, by fixing the outer film in a state 0.5% to 3% longer than the inner film, the outer film naturally draws a relatively large curl diameter, and the inner film is wound inside the outer film. The difference in curl length caused by the difference between the curl diameter relatively smaller than the curl diameter of the outer film drawn by the film can be compensated. As a result, the outer film can be curled without being stretched. As a result, the restoring force of the outer film curl can be more effectively exhibited.

The invention according to claim 3 is characterized in that the outer film includes an extension portion that is drawn outside the end portion of the inner film and is not overlapped on the start end side of the curl. The container opening sealer according to claim 1 or 2.
According to this configuration, at the start of curling, it is possible to gain momentum by curling the extended portion of the outer film on which the inner film is not overlapped alone. Thereby, when the curl reaches the region where the outer film and the inner film overlap, the inner film can be wound with the outer film while the restoring force of the outer film is sufficiently increased.

According to a fourth aspect of the present invention, the outer film may be composed of at least two layers having different molding shrinkage rates.
According to a fifth aspect of the present invention, the outer film and the inner film have a triangular shape or a semicircular shape, and the cylindrical portion has the triangular shape and the top of the semicircle as a start end of the curl. The container opening sealing device according to claim 1, 3 or 4, wherein the container opening sealing device is formed at various positions.

According to this configuration, since the start end of the curl is a triangle or the top of a semicircle, the curl can be easily started.
The invention according to claim 6 includes a flat and flexible tubular inflation film and a curl film that curls naturally on one surface of the tubular inflation film, and the curled film is the tubular inflation film. A container opening sealing device characterized in that the opening of the container can be sealed by attaching the end point end of the curl to the inner periphery of the opening of the container.

  According to this configuration, the cylindrical portion serving as a passage for taking in and out the contents of the container is a cylindrical inflation film, which is different from a cylindrical shape formed by side-sealing two films. There are no side seals at both ends. In addition, since the tubular inflation film is flexible, the curled film superimposed on one surface of the film can be curled with a relatively high degree of freedom. Therefore, the curl restoring force of the curled film can be sufficiently exhibited. As a result, when this container opening sealing tool is attached to the inner periphery of the opening of the container, the degree of sealing of the container can be improved by utilizing the restoring force of the outer film.

According to a seventh aspect of the present invention, the curled film is inserted into the tubular inflation film, and is drawn to the outside of the end portion of the tubular inflation film on the start end side of the curl. The container opening sealing device according to claim 6, further comprising an extension portion.
According to this configuration, at the start of curling, it is possible to gain momentum by curling the extended portion of the curled film on which the tubular inflation film is not superimposed. Accordingly, when the curl reaches the region where the curl film and the tubular inflation film overlap, the tubular inflation film can be wound with the curl film in a state where the restoring force of the curl film is sufficiently increased.

As in the invention described in claim 8, the curl film may be composed of at least two layers having different molding shrinkage rates.
In this case, as in the invention according to claim 9, one outer layer of the curled film is made of a material that can be heat-sealed with respect to the tubular inflation film, and the other outer layer of the curled film is formed of the tube. It is preferably made of a material that is difficult to heat-seal against the film-like inflation film.

  According to this configuration, the curl film is inserted into the tubular inflation film, and the tubular inflation film is further inserted into a container made of a heat-sealable material, and then heat sealed from the outside of the container. Adhesion between the tubular inflation film and the curl film and adhesion between the tubular inflation film and the container can be performed in one heat sealing step.

The invention described in claim 10 is a container characterized in that the opening is sealed by the container opening sealing tool described in claims 1-9.
According to this structure, since the container opening sealing tool of this invention is attached, the outstanding sealing degree can be expressed.
The container opening sealing tool may be attached to the container such that the start end of the curl is disposed inside the container, as in the invention described in claim 11. As in the present invention, the container opening sealing tool may be attached so that the start end of the curl is arranged outside the curl.

The invention according to claim 13 is the container according to any one of claims 10 to 12, which is a pouch formed using a plastic film.
According to this configuration, the container opening sealing tool can be easily fixed to the pouch by heat sealing.
The invention described in claim 14 is the container according to any one of claims 10 to 13, which is an outer bag for enclosing a drug container therein.

According to this configuration, the opening of the container can be automatically closed by dropping the medicine container into the container. Therefore, it is very useful for busy medical workers.
The invention according to claim 15 is the container according to any one of claims 10 to 13, which is a waste bin.
According to this configuration, after dropping the waste into the waste bin, the opening of the waste bin can be easily sealed. Therefore, it is possible to provide a waste bin that is hygienic and has little odor leakage.

The invention according to claim 16 is a container according to any one of claims 10 to 13, which is a beverage container.
According to this configuration, for example, if the beverage container is of a straw insertion type, the straw can be easily inserted, and the mouth of the beverage container can be instantaneously closed by removing the straw. Therefore, a sanitary beverage container can be provided.

In addition, even if it is not a straw insertion type, the mouth can be closed immediately after the beverage is taken out of the beverage container, so that oxygen can be prevented from entering the container and the beverage flavor is maintained well. can do.
The invention according to claim 17 is a container according to any one of claims 10 to 13, which is a seasoning container.

  Since the mouth can be closed instantly after the seasoning is dispensed from the seasoning container, the intrusion of oxygen into the container can be reduced. Therefore, the flavor of the seasoning can be maintained well.

FIG. 1 is a schematic perspective view of a container opening sealing device according to a first embodiment of the present invention. FIG. 2 is a developed view of the curl of the container opening sealer of FIG. 3 (a) and 3 (b) are cross-sectional views of the container opening sealer taken along the line III-III in FIG. 2, wherein FIG. 3 (a) shows a state in which the curl is unfolded, and FIG. The curled state is shown. 4 (a) to 4 (d) are diagrams for sequentially explaining how to use the outer bag to which the container opening sealer of FIG. 1 is attached. FIG. 5 is a view showing a first modification of the container opening sealing tool. FIG. 6 is a diagram showing an attached state of the container opening sealing tool of FIG. FIG. 7 is a view showing a second modification of the container opening sealing tool. FIG. 8 is a diagram showing an attached state of the container opening sealer of FIG. FIG. 9 is a schematic perspective view of a container opening sealing device according to the second embodiment of the present invention. 10 (a) and 10 (b) are cross-sectional views of the container opening sealer of FIG. 9, in which FIG. 10 (a) shows a state where the curl is unfolded, and FIG. 10 (b) shows a state where the curl is shown. ing. 11 (a) to 11 (c) are diagrams for sequentially explaining a method of using the outer bag to which the container opening sealing tool of FIG. 9 is attached. FIG. 12 is a schematic perspective view of a container opening sealing device according to the third embodiment of the present invention. 13 (a) and 13 (b) are cross-sectional views of the container opening sealing device of FIG. 12, wherein FIG. 13 (a) shows a state where the curl is unfolded, and FIG. 13 (b) shows a state where the curl is shown. ing. 14A to 14C are views for sequentially explaining the heat sealing process of the container opening sealer of FIG. FIGS. 15A to 15C are views for sequentially explaining a method of using the trash box to which the container opening sealer of FIG. 1 is attached. 16 (a) to 16 (c) are diagrams for sequentially explaining a method of using a beverage pouch to which the container opening sealer of FIG. 1 is attached. 17 (a) to 17 (c) are diagrams for sequentially explaining a method of using the seasoning pouch to which the container opening sealing tool of FIG. 1 is attached.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.
<First Embodiment>
FIG. 1 is a schematic perspective view of a container opening sealer 1 according to the first embodiment of the present invention, and shows a completed drawing of the container opening sealer 1 in the lower part of the drawing, and each of the middle and upper parts of the drawing. The outer film 2 and the inner film 3 which comprise the said container opening sealing tool 1 are shown.

As shown in FIG. 1, the container opening sealing device 1 according to this embodiment includes an outer film 2 and an inner film 3 superimposed on the outer film 2, and the outer film 2 entrains the inner film 3. , Part of which has a curled part.
The outer film 2 is, for example, a film that naturally curls according to its own characteristics even if it is not forcibly wound at room temperature (20 ° C. to 25 ° C.), and is composed of at least two layers having different molding shrinkage rates. It is preferable. The outer film 2 is, for example, disposed on the contact surface (inner side surface) side of the small shrinkage rate layer having a relatively small molding shrinkage rate and the inner film with respect to the small shrinkage rate layer, and compared with the small shrinkage rate layer. And at least a large shrinkage ratio layer having a relatively large molding shrinkage ratio. Thereby, the outer film 2 can be favorably curled inward using the difference in shrinkage between these two layers. More specifically, in this embodiment, the outer film 2 has a two-layer structure of an outer plastic layer 4 as an example of a small shrinkage rate layer and an inner plastic layer 5 as an example of a large shrinkage rate layer, The inner film 3 is in contact with one surface of the inner plastic layer 5.

  As an example of the outer plastic layer 4, as described above, the outer plastic layer 4 is preferably made of a material having a relatively small molding shrinkage compared to the inner plastic layer 5. For example, ethylene vinyl alcohol (EVOH), cyclic olefin copolymer (COC) Etc.) are preferred. On the other hand, as an example of the inner plastic layer 5, as described above, it is preferably made of a material having a relatively large molding shrinkage compared to the outer plastic layer 4. For example, polyolefin (polyethylene (PE), polypropylene (PP )) Etc. are preferred.

The outer film 2 does not need to have a two-layer structure of the outer plastic layer 4 and the inner plastic layer 5, for example, between the outer plastic layer and the inner plastic layer 5, the outer side of the outer plastic layer 4, and the inner plastic layer. A layer (not shown) may be provided inside the layer 5.
The inner film 3 may be a film that naturally curls in the same manner as the outer film 2. For example, the inner film 3 is a film that can maintain its shape according to its own characteristics at room temperature (20 ° C. to 25 ° C.) and does not naturally curl. Also good.

  When the inner film 3 is a film that naturally curls, the inner film 3 has the same film configuration as that of the outer film 2, and further, the inner film 3 has a small shrinkage ratio layer (inner plastic layer 5). It is preferable to overlap the outer film 2 so that the shrinkage rate layers face each other. Thereby, since the outer film 2 and the inner film 3 can be curled in the same direction, the container opening sealing tool 1 can be curled satisfactorily.

On the other hand, when the inner plastic layer 5 is a film that does not naturally curl, the inner film 3 preferably has, for example, a polyolefin single-layer structure.
Regarding each thickness of the outer film 2 and the inner film 3, for example, the outer film 2 has a thickness of 10 μm to 100 μm, and the inner film 3 has a thickness of 10 μm to 100 μm. The outer plastic layer 4 is 5 μm to 70 μm thick, and the inner plastic layer 5 is 5 μm to 70 μm thick.

FIG. 2 is a developed view of the curl of the container opening sealing tool 1 of FIG. 3 (a) and 3 (b) are cross-sectional views of the container opening sealing device 1 in the III-III cross section of FIG. 2, and FIG. 3 (a) shows a state in which the curl is unfolded, and FIG. Indicates a curled state.
Next, a specific structure of the container opening sealing tool 1 will be described with reference to FIGS. 2 and 3A and 3B.

  As shown in FIG. 2, the container opening sealing device 1 is formed by stacking the outer film 2 and the inner film 3 facing the outer film 2 and heat-sealing the corners at both ends of one side of the overlapping film by a certain length. The cylindrical part and the non-cylindrical part are formed. More specifically, in this embodiment, the outer film 2 and the inner film 3 are both rectangular and have the same width W. The width W is, for example, 10 cm to 20 cm. In FIG. 2, the width of the inner film 3 is shown smaller than the width of the outer film 2 in order to easily illustrate the state in which the outer film 2 and the inner film 3 overlap.

And the opening film 6 along the width direction of the outer film 2 and the inner film 3, and the inner film 3 on the outer film 2 so that a pair of side edges 7 and 8 perpendicular to the opening edge 6 and parallel to each other coincide. The seal portions 9 are selectively formed along the side edges 7 and 8 from the corners at both ends of the opening side 6 to the middle portions of the side edges 7 and 8.
The seal portion 9 heats between the outer film 2 and the inner film 3 in a substantially linear region (seal location) having a constant width from each of the side sides 7 and 8 and a constant length L1 from the corner portion of the opening side 6. It is formed by sealing. The length L1 of the seal portion 9 is preferably, for example, 10% to 30% of the length L2 of the side edges 7 and 8, and in this embodiment, a specific numerical value is 1 cm to 3 cm.

  By forming the seal portion 9, the container opening sealing tool 1 is closed by side-sealing both ends of the seal portion 9 (see FIGS. 3A and 3B), and the outer film 2 and the inner side It has a flat cylindrical portion 10 partitioned by a film 3. As will be described later, the cylindrical portion 10 is fixed to the inner peripheral surface of the opening 24 of the outer bag 19, thereby forming a passage for taking the chemical solution bottle 18 into and out of the outer bag 19.

  On the other hand, the unsealed portion 11 in which the space between the outer film 2 and the inner film 3 is not heat-sealed continues to the seal portion 9 in the remaining portions where the seal portions 9 are not formed on the side edges 7 and 8. Selectively formed. In the section of the unsealed portion 11, the outer film 2 and the inner film 3 are in a free state without being restricted by movement of each other by heat sealing, and both ends in the width direction are opened (FIG. 3A). (See (b)) The non-cylindrical portion 12 is formed. The non-cylindrical part 12 will be arrange | positioned so that the cylindrical part 10 may be continued along the side edges 7 and 8. FIG.

  Furthermore, in this embodiment, on the opposite side of the seal portion 9 with respect to the non-cylindrical portion 12 on the side sides 7 and 8, the seal portion 13 is provided along the side sides 7 and 8 so as to be continuous with the unsealed portion 11. Selectively formed. The seal portion 13 is formed by heat-sealing between the outer film 2 and the inner film 3 in a substantially linear region (seal location) along the side edges 7 and 8, similarly to the seal portion 9. . The seal portion 13 is for fixing the outer film 2 to the inner film 3 at the two corners on the opposite side of the opening side 6. Unlike the seal portion 9, the seal portion 13 has a certain length on the container opening seal 1. It is not necessary to form a cylindrical portion having Therefore, the seal part 13 does not need to be substantially linear, and may be, for example, dot-like. In addition, the length L3 of the seal portion 13 when formed in a substantially linear shape is preferably as short as possible as long as the gap between the outer film 2 and the inner film 3 can be fixed. In this embodiment, the specific numerical value is 0.2 cm to 0.5 cm.

  Further, in the non-cylindrical portion 12 sandwiched between the seal portion 9 on the opening side 6 side and the seal portion 13 on the opposite side, the outer film 2 is 0.5% to 3% longer than the inner film 3. ing. In this embodiment, as a specific numerical value, the length of the inner film 3 in the non-cylindrical portion 12 is 8 cm to 15 cm, whereas the length of the outer film 2 is 0.5% to 3% more than that. % Longer from 8.04 cm to 15.45 cm. In this state, the outer film 2 is fixed to the inner film 3 at four points by seal portions 9 and 13 formed at the four corners of the inner film 3. Thereby, as shown in FIG. 3A, the container opening sealer 1 has a non-bulged portion 14 formed by swelling the outer film 2 in a direction away from the inner film 3 in a state where the curl is unfolded. It has in the cylindrical part 12.

  Moreover, in this embodiment, the outer film 2 is formed longer than the inner film 3 even if it is the whole length. Thereby, in a state where the opening sides 6 are made to coincide and the films 2 and 3 are overlapped, the outer film 2 is pulled out to the outside from the side 15 (end part) opposite to the opening side 6 of the inner film 3. And has an extension 16 on which the inner film 3 is not overlapped. The extension portion 16 is formed of a substantially rectangular region, and has a curl start side 17 as an example of a curl start end of the present invention parallel to the open side 6 on the opposite side of the open side 6 with respect to the side 15. doing. Moreover, it is preferable that the length of the extension part 16 is less than 50% of the whole length of the outer film 2, for example, 5% to 40% of the length of the outer film 2 is preferable. In this embodiment, as a specific numerical value, the entire length of the outer film 2 is 8 cm to 15 cm, whereas the length of the extension portion 16 is 0.4 cm to 6 cm.

  Since the container opening sealing tool 1 having the above-described configuration is a film in which the outer film 2 naturally curls, as shown in FIG. 3B, the cylindrical portion 10 has an end point and a curl start side 17. The outer film 2 is curled by winding the inner film 3 in order from the extended portion 16 to the non-cylindrical portion 12. By this curl, the outer film 2 and the inner film 3 of the non-cylindrical portion 12 are in close contact with each other, and the space between the curl end point side and the curl start end side of the non-cylindrical portion 12 is closed in a liquid-tight and air-tight manner. Is done.

4 (a) to 4 (d) are diagrams for sequentially explaining how to use the outer bag 19 to which the container opening sealing device 1 of FIG. 1 is attached.
Next, with reference to FIG. 4 (a)-(d), the specific usage method of the container opening sealing tool 1 is demonstrated.
The container opening sealing tool 1 shown in FIGS. 1 to 3 is, for example, as shown in FIGS. 4 (a) to 4 (d), an opening of an outer bag 19 for enclosing a drug bottle (medical solution container) 18 therein. It can be used as a sealing tool.

  In the outer bag 19, for example, the accommodation chamber is partitioned by two plastic films whose periphery is fixed by heat sealing. More specifically, in this embodiment, the two substantially rectangular films 20 and 21 having oxygen barrier properties are stacked, and the seal portion 22 is formed by heat sealing at the peripheral portion of the three sides thereof. A storage chamber 23 is defined inside. On the other hand, an opening 24 is formed along the remaining one side of the films 20 and 21 where heat sealing is not performed, and the container opening sealing tool 1 is attached to the inner peripheral surface of the opening 24.

  The container opening sealer 1 is inserted with the curl start side 17 side toward the bottom of the storage chamber 23 so that the curl start side 17 which is a curl start end is disposed in the storage chamber 23. In this state, the cylindrical portion 10 of the outer film 2 is fixed to the inner peripheral surface of the opening 24 of one film 20, and the cylindrical portion 10 of the inner film 3 is fixed to the inner peripheral surface of the opening 24 of the other film 21. It is attached by doing. The state after the attachment is shown in FIG.

  Then, in order to enclose the drug bottle 18 in the outer bag 19 to which the container opening sealing tool 1 is attached, first, as shown in FIG. The cylindrical part 10 of the container opening sealing tool 1 thus formed is expanded. A drug bottle 18 (for example, an infusion bag or the like) is inserted into the opening formed thereby from the tip. Then, the curl of the container opening sealing tool 1 extends due to the weight of the medicine bottle 18. Thereafter, as shown in FIGS. 4C and 4D, when the medicine bottle 18 is accommodated in the accommodation chamber 23, the container opening sealing tool 1 spread when the medicine bottle 18 passes is flattened. At almost the same time as returning to the shape, the curl starts again from the curl start side 17, and finally the curl reaches the cylindrical part 10. Thereby, the storage chamber 18 of the outer bag 19 is sealed.

  As described above, according to this embodiment, a seal is selectively applied between the outer film 2 and the inner film 3 in the curled region of the container opening sealing tool 1 as shown in FIG. A non-cylindrical portion 12 that is not included is included. In this non-cylindrical portion 12, unlike the cylindrical portion 10, the outer film 2 and the inner film 3 that naturally curl are in a free state without being restricted by movement by heat sealing. Therefore, the curl restoring force of the outer film 2 and the inner film 3 can be sufficiently exhibited in the non-cylindrical portion 12.

  Moreover, as shown to Fig.3 (a), the outer film 2 is 0.5%-3% longer than the inner film 3 in the non-cylindrical part 12. FIG. This results from the difference between a relatively large curl diameter drawn by the outer film 2 and a curl diameter relatively smaller than the curl diameter of the outer film 2 drawn by the inner film 3 by being wound around the outer film 2. The difference in curl length can be compensated. Therefore, the outer film 2 can be curled without being stretched. As a result, the curl restoring force of the outer film 2 can be more effectively exhibited.

  Further, as shown in FIGS. 2 and 3 (a) and 3 (b), the outer film 2 has the extension portion 16, so that the extension portion 16 is curled independently at the start of curling. Can do. Thereby, when the curl reaches the side 15 where the outer film 2 and the inner film 3 overlap, the inner film 3 can be wound with the outer film 2 in a state where the restoring force of the outer film 2 is sufficiently increased.

  As a result, in the outer bag 19 to which the container opening sealing tool 1 is attached, the degree of sealing can be improved using the restoring force of the outer film 2 and the inner film 3. Moreover, the opening 24 of the outer bag 19 can be automatically closed by dropping the medicine bottle 18 into the storage chamber 23 of the outer bag 19. Therefore, it is very useful for busy medical workers.

Further, since the outer bag 19 is a pouch made of two plastic films 20 and 21, the container opening sealing tool 1 can be easily fixed to the outer bag 19 by heat sealing.
<Modification of First Embodiment>
In the above description, the container opening sealing device 1 is composed of both the rectangular outer film 2 and the inner film 3, but for example, both the triangular film or the semicircular outer film and the inner film. May be. An example thereof is shown in FIGS.

FIG. 5 is a view showing a first modification of the container opening sealing tool 1. FIG. 6 is a diagram showing an attached state of the container opening sealing tool 25 of FIG. 5 and 6, parts corresponding to those shown in FIGS. 1 to 4 are denoted by the same reference numerals as those given to the respective parts, and description thereof will be omitted.
As shown in FIG. 5, the container opening sealing device 25 is composed of an outer film 26 and an inner film 27 each having a regular triangular shape. These films 26 and 27 are formed in the same size. 5 and 6, the inner film 27 is shown smaller than the outer film 26 in order to facilitate the illustration of the state in which the outer film 26 and the inner film 27 overlap.

Then, the inner film 3 is overlapped on the outer film 2 and sealed along the sides 29 and 30 from the corners of both ends of the matching one side (opening side 28) to the middle part of the remaining two sides 29 and 30. The part 31 is selectively formed. A cylindrical portion 32 is formed in the container opening seal 25 by the seal portion 31.
On the other hand, an unsealed portion 33 that is not heat-sealed between the outer film 26 and the inner film 27 is formed in the remaining portions where the seal portion 31 is not formed on the sides 29 and 30 so as to continue to the seal portion 31. As a result, a non-cylindrical portion 34 is formed. In this modification, the non-cylindrical portion 34 has a top portion 35 opposite to the opening side 28 (that is, a diagonal portion of the opening side 28).

In the container opening sealing device 25 having the above-described configuration, the outer film 26 entrains the inner film 27 in the region including the non-cylindrical portion 12 with the cylindrical portion 32 as the end point and the top 35 as the start end. Curl.
Then, as shown in FIG. 6, the container opening seal 25 is inserted with the top 35 side facing the bottom of the storage chamber 23 so that the top 35 that is the curl start end is disposed in the storage chamber 23. Is done. In this state, the cylindrical portion 32 of the outer film 26 is fixed to the inner peripheral surface of the opening 24 of one film 20 (not shown in FIG. 6), and the cylindrical portion 32 of the inner film 27 is fixed to the other film 21 (FIG. 6) (not shown in FIG. 6).

According to this container opening sealing tool 25, since the curl start end is the triangular top 35, curl can be easily started. Although not shown, the same effect can be exhibited even when both a semicircular outer film and an inner film are used.
Next, a second modification will be described with reference to FIGS. FIG. 7 is a view showing a second modification of the container opening sealing tool 1. FIG. 8 is a diagram showing an attached state of the container opening sealing tool 36 of FIG.

  In the above description, the seal portion 9 is formed from the corners at both ends of the opening side 6 to the middle portion of the side sides 7 and 8. For example, as shown in FIG. In addition, a position spaced from the corners at both ends of the opening side 6 by a predetermined distance may be used as a start end. Thereby, the container opening sealing tool 36 may further have a non-cylindrical part 37 on the opening side 6 side with respect to the seal part 9.

For example, as shown in FIG. 8, the non-cylindrical portion 37 is attached to the outer bag 19 by attaching it to the outer surface side of the opening 24 of the outer bag 19 when attaching the container opening sealing tool 36. Can be used. Thereby, since the container opening sealing tool 36 can be fixed from both the inner surface and the outer surface of the opening 24, the adhesion between the outer bag 19 and the container opening sealing tool 36 can be improved.
Second Embodiment
FIG. 9 is a schematic perspective view of a container opening sealing device 38 according to the second embodiment of the present invention. 10 (a) and 10 (b) are cross-sectional views of the container opening sealing device 38 of FIG. 9, wherein FIG. 10 (a) shows a state in which the curl is unfolded, and FIG. Show.

As shown in FIG. 9, the container opening sealing device 38 according to this embodiment includes a tubular inflation film 39 and a curl film 40 superimposed on the tubular inflation film 39, and the curl film 40 is tubular inflation. By winding the film 39, a part of the film 39 is curled.
The cylindrical inflation film 39 is obtained by flattening a single film obtained in a cylindrical shape by, for example, blow molding a plastic raw material at a pair of sides 41 and 42 parallel to each other. It is. As a result, the tubular inflation film 39 includes a pair of side sides 41 and 42 and a substantially rectangular outer portion 45 (partitioned by a pair of opening sides 43 and 44 that are orthogonal to each other and parallel to each other. One side) and an inner part 46 (the other side). The internal space 47 of the tubular inflation film 39 becomes a passage for taking the chemical solution bottle 18 into and out of the outer bag 19 in the same manner as the tubular portion 10 described above.

Moreover, as an example of the plastic raw material used for molding the tubular inflation film 39, for example, polyolefin (polyethylene (PE), polypropylene (PP)) or the like is preferable.
The length of the tubular inflation film 39 (the length of the side edges 41, 42) is, for example, 8 cm to 15 cm, and the width (the length of the openings 43, 44) is, for example, 10 cm to 20 cm. Furthermore, the cylindrical inflation film 39 has a thickness of 10 μm to 100 μm, for example.

  The curled film 40 is, for example, a film that naturally curls according to its own characteristics without being forcibly wound at room temperature (20 ° C. to 25 ° C.), and is composed of at least two layers having different molding shrinkage rates. It is preferable. That is, the curl film 40 may be configured using the same material as the outer film 2 and the inner film 3 in the above-described embodiment. Thereby, the curl film 40 can be curled satisfactorily using the difference between the shrinkage rates of the two layers, the small shrinkage rate layer and the large shrinkage rate layer.

Further, in this embodiment, the curl film 40 is a quadrangular shape having the same length and the same width as the flat tubular inflation film 39, but it is not necessary to have the same dimensions.
And the container opening sealing device 38 bonds the curl film 40 to the outer side part 45 of the cylindrical inflation film 39 so that each side of the curl film 40 coincides with each side 41 to 44 of the cylindrical inflation film 39. It is formed by. For this bonding, for example, an adhesive or the like can be used.

  Since the container opening sealing device 38 having the above-described configuration is a film in which the curl film 40 is naturally curled, as shown in FIG. The curl film 40 is curled by winding the tubular inflation film 39 inward, with the end close to the other opening side 44 as the start end. Due to this curl, the outer portion 45 and the inner portion 46 of the tubular inflation film 39 are brought into close contact with each other, and the internal space 47 between the curl end point side and the curl start end side is closed in a liquid-tight and air-tight manner. .

FIGS. 11A to 11C are views for sequentially explaining a method of using the outer bag 19 to which the container opening sealing member 38 of FIG. 9 is attached.
Next, with reference to FIG. 11 (a)-(c), the specific usage method of the container opening sealing tool 38 is demonstrated.
The container opening sealing tool 38 shown in FIGS. 9 and 10 is, for example, as shown in FIGS. 11 (a) to 11 (c), an opening of the outer bag 19 for enclosing a drug bottle (medical solution container) 18 therein. It can be used as a sealing tool. In addition, since the structure of the outer bag 19 is the same as that of the above-mentioned embodiment, description is abbreviate | omitted here.

  The container opening sealing tool 38 is inserted with the other opening side 44 side toward the bottom of the storage chamber 23 so that the other opening side 44 that is the start end of curling is disposed in the storage chamber 23. In this state, a region near one opening side 43 of the curl film 40 is fixed to the inner peripheral surface of the opening 24 of one film 20, and a region near one opening side 43 of the inner side portion 46 of the tubular inflation film 39. Is attached to the inner peripheral surface of the opening 24 of the other film 21. The state after the attachment is shown in FIG.

  Then, in order to enclose the drug bottle 18 in the outer bag 19 to which the container opening sealer 38 is attached, first, as shown in FIG. The internal space 47 of the tubular inflation film 39 of the container opening sealer 38 thus formed is widened. The drug bottle 18 is inserted from the tip into the opening thus formed. Then, the curl of the container opening sealing tool 38 extends due to the weight of the medicine bottle 18. After that, as shown in FIG. 11 (c), when the medicine bottle 18 is accommodated in the accommodation chamber 23, the container opening sealing member 38 that has been spread when the medicine bottle 18 passes is almost simultaneously returned to the flat shape. Then, curling is started again from the other opening side 44, and finally the curl reaches the vicinity of one opening side 43. Thereby, the storage chamber 18 of the outer bag 19 is sealed.

  As described above, according to this embodiment, the cylindrical portion serving as a passage for taking in and out the drug bottle 18 is the internal space 47 of the flat cylindrical inflation film 39, and the two films are side-sealed. Unlike the cylindrical shape, side seals are not applied to both ends. In addition, since the tubular inflation film 39 is flexible, the curl film 40 superimposed on the outer portion 45 of the film 39 can be curled with a relatively high degree of freedom. Therefore, the curl restoring force of the curl film 40 can be sufficiently exhibited.

As a result, in the outer bag 19 to which the container opening sealing tool 38 is attached, the degree of sealing can be improved by utilizing the restoring force of the curl film 40. Moreover, the opening 24 of the outer bag 19 can be automatically closed by dropping the medicine bottle 18 into the storage chamber 23 of the outer bag 19. Therefore, it is very useful for busy medical workers.
<Third Embodiment>
FIG. 12 is a schematic perspective view of a container opening sealing tool 48 according to the third embodiment of the present invention. 13 (a) and 13 (b) are cross-sectional views of the container opening sealing device 48 of FIG. 12, wherein FIG. 13 (a) shows a state in which the curl is unfolded, and FIG. Show. 12 and 13, parts corresponding to the parts shown in FIGS. 9 and 10 are denoted by the same reference numerals as those given to the respective parts, and description thereof will be omitted.

In the container opening sealing device 38 of the second embodiment described above, the curl film 40 is provided outside the cylindrical inflation film 39. However, in this container opening sealing device 48, the curl film 40 is more than the cylindrical inflation film 39. It is formed in a narrow width and is inserted into the tubular inflation film 39.
The configuration of the curl film 40 will be described more specifically with respect to this embodiment. The curl film 40 includes an outer plastic layer 49 as an example of a small shrinkage rate layer, and an inner plastic layer 50 as an example of a large shrinkage rate layer. The two-layer structure.

  As an example of the outer plastic layer 49, as described above, the outer plastic layer 49 is made of a material that has a relatively small molding shrinkage compared to the inner plastic layer 50, and is made of a material that is difficult to heat seal against the tubular inflation film 39. Is preferred. For example, when the tubular inflation film 39 is a polyolefin, ethylene vinyl alcohol (EVOH), cyclic olefin copolymer (COC), or the like is preferable.

  On the other hand, as an example of the inner plastic layer 50, as described above, the inner plastic layer 50 is made of a material having a relatively large molding shrinkage compared to the outer plastic layer 49, and is made of a material that can be heat sealed to the tubular inflation film 39. It is preferable to become. For example, when the tubular inflation film 39 is polyolefin, polyolefin (polyethylene (PE), polypropylene (PP)) or the like is preferable.

  Further, the curl film 40 is formed longer than the tubular inflation film 39. Thus, in a state where the upper side of the curl film 40 is aligned with the opening side 43 on the curl end point side of the tubular inflation film 39 and these films 39 and 40 are overlapped, the curl film 40 is formed of the tubular inflation film 39. It has an extension 51 that is drawn outside the opening side 44 (end) opposite to the opening side 43 and is not covered with the tubular inflation film 39. The extension 51 includes a curl start side 52 as an example of the start end of the curl of the present invention, which is formed of a substantially rectangular region and is parallel to the opening side 44. Further, the length of the extension 51 is preferably less than 50% of the entire length of the curled film 40, for example, preferably 5% to 40% of the length of the curled film 40. In this embodiment, as a specific numerical value, the entire length of the curl film 40 is 8 cm to 15 cm, whereas the length of the extension portion 51 is 0.4 cm to 6 cm.

The container opening sealing device 48 inserts the curl film 40 into the tubular inflation film 39 so that the upper side of the curl film 40 coincides with the opening side 43 of the tubular inflation film 39, and the inner plastic layer 50. Is heat-sealed to the inner side portion 46 of the tubular inflation film 39.
Since the container opening sealing device 48 having the above-described configuration is a film on which the curl film 40 naturally curls, as shown in FIG. The curl film 40 is curled by winding the tubular inflation film 39 inside with the curl start side 52 of the extension 51 as the start end. By this curl, the outer portion 45 and the inner portion 46 of the tubular inflation film 39 are in close contact with the curl film 40, and the internal space 47 between the curl end point side and the curl start end side is liquid-tight and air-tight. Is closed.

And this container opening sealing tool 48 is also attached to the outer bag 19 similarly to the container opening sealing tool 38 of the above-mentioned 2nd Embodiment, By utilizing the restoring force of the curl film 40, the outer bag 19 The degree of sealing can be improved.
Also, as shown in FIGS. 12 and 13 (a) and 13 (b), since the curl film 40 has the extension 51, it is possible to gain momentum by curling the extension 51 alone at the start of curling. Can do. As a result, when the curl reaches the opening side 44 where the curl film 40 and the tubular inflation film 39 overlap, the curl film 40 is made of the curl film 40 with the restoring force of the curl film 40 sufficiently increased. Can be involved.

  Further, as shown in FIGS. 13A and 13B, the curl film 40 heats the outer plastic layer 49 made of a material that is difficult to heat seal against the tubular inflation film 39 and the tubular inflation film 39. It consists of a two-layer structure with an inner plastic layer 50 made of a sealable material. Therefore, as shown in FIGS. 14A to 14C, the curling film 40 and the tubular inflation film 39 are fixed and the tubular inflation film 39 and the outer bag 19 are fixed in one heat sealing process. Can do.

Specifically, first, as shown in FIG. 14A, the curl film 40 is inserted into the tubular inflation film 39, and the tubular inflation film 39 is further inserted into the outer bag 19.
Next, as shown in FIG. 14B, heat sealing is performed from the outside of the outer bag 19. At this time, the curl film 40, the tubular inflation film 39, and the outer bag 19 are in close contact with each other, but only portions that can be welded together by heat sealing are selectively heat sealed. In FIG. 14 (b), the interfaces 53 to 55 indicated by bold lines, that is, the interface 53 between the film 21 of the outer bag 19 and the inner part 46 of the tubular inflation film 39, the inner part 46 and the curl of the tubular inflation film 39 are shown. The interface 54 between the inner plastic layer 50 of the film 40 and the interface 55 between the outer portion 45 of the tubular inflation film 39 and the film 20 of the outer bag 19 are selectively heat sealed. On the other hand, between the outer portion 45 and the outer plastic layer 49, the outer plastic layer 49 is made of a material that is difficult to heat seal against the tubular inflation film 39, so that no heat seal is formed.

As a result, as shown in FIG. 14 (c), the outer portion 45 and the inner portion 46 of the tubular inflation film 39 are respectively closed to the film 20 of the outer bag 19 without closing the inner space 37 of the tubular inflation film 39. , 21 can be fixed.
As mentioned above, although embodiment of this invention was described, this invention can also be implemented with another form.

For example, the container opening sealing tool of the present invention can be used not only for sealing the outer bag 19 as in the above-described embodiment, but also as a tool for sealing the openings of various containers. In the following, three specific examples using the container opening sealing device 1 will be described. In each example, the container opening sealing device 1 can be replaced with the container opening sealing device 25, 36, 38, 48. is there.
For example, as shown in FIG. 15 (a), when the container opening sealing tool 1 is attached to the mouth 57 of the open-type trash can 56 so that the curl start end is on the inside, it is shown in FIG. 15 (b). Thus, after dropping the garbage 58 into the garbage box 56, the mouth 57 of the garbage box 56 can be easily sealed as shown in FIG. 15 (c). Therefore, it is possible to provide the waste bin 56 that is hygienic and has little odor leakage.

  Also, for example, as shown in FIG. 16 (a), if the container opening sealing device 1 is attached as a straw insertion port to a beverage pack 59 of a straw insertion type so that the start end of the curl is inside, FIG. The straw 60 can be easily inserted as shown in (b), and the mouth of the beverage pack 59 can be instantly closed by pulling out the straw 60 as shown in FIG. Therefore, a sanitary beverage pack 59 can be provided.

In addition, even if it is not a straw insertion type, the mouth can be closed immediately after the beverage is taken out of the beverage container, so that oxygen can be prevented from entering the container and the beverage flavor is maintained well. can do.
Also, for example, as shown in FIG. 17 (a), if the container opening seal 1 is attached to the seasoning pack 61 as a spout so that the curl start end is on the outside, as shown in FIG. 17 (b). After the seasoning is taken out from the seasoning pack 61 container, the mouth can be closed instantly as shown in FIG. As a result, the invasion of oxygen into the seasoning pack 61 can be reduced, and the flavor of the seasoning can be maintained well.

In the first embodiment, only one cylindrical portion 10 is provided, but a plurality of cylindrical portions 10 may be provided.
In addition, various design changes can be made within the scope of matters described in the claims.

Next, although this invention is demonstrated based on an Example and a comparative example, this invention is not limited by the following Example.
(1) Example 1 and Comparative Example 1
Example 1 and Comparative Example 1 were carried out in order to demonstrate the effect of the first embodiment described above.

  First, as Example 1, two rectangular films having a width of 15 cm and a length of 10 cm, each composed of an ethylene vinyl alcohol copolymer layer (10 μm) and a polyethylene layer (30 μm), are stacked in the same direction, and the corners of opposite sides are stacked. The part was sealed with a length of 1.5 cm to form a cylindrical part. The cylindrical part was sealed and fixed to the opening of the polyethylene bag, and the film was naturally curled with the side facing the cylindrical part as the starting end to obtain the final outer bag.

When a 250 mL chemical solution bottle was inserted into the opening of the obtained outer bag, the curl of the film was extended by the weight of the chemical solution bottle, and the chemical solution bottle dropped into the outer bag. Immediately thereafter, the film returned to its original curl shape, and even when the outer bag was pushed, the air inside did not leak.
On the other hand, as Comparative Example 1, two similar films were overlapped, and all sides facing each other were sealed to form a cylindrical shape, which was then naturally curled. The curled film was sealed and fixed to the opening of a similar polyethylene bag to obtain a final outer bag.

When a 250 mL chemical solution bottle was inserted into the opening of the obtained outer bag, the curl of the film was extended by the weight of the chemical solution bottle, and the chemical solution bottle dropped into the outer bag. However, about 50% of cases where the curl of the film did not return.
(2) Example 2 and Comparative Example 2
Example 2 and Comparative Example 2 were carried out in order to demonstrate the effect of the second embodiment described above.

  First, as Example 2, a 20 μm-thick polyolefin inflation film was laminated on the polyethylene layer side of a film composed of an ethylene vinyl alcohol copolymer layer (10 μm) and a polyethylene layer (30 μm), and a cylinder having a width of 15 cm. A film was obtained. This was cut into a length of 10 cm and one end thereof was sealed and fixed to the opening of a polyethylene bag, and then the cylindrical film was naturally curled to obtain a final outer bag.

When a 250 mL chemical solution bottle was inserted into the opening of the obtained outer bag, the curl of the cylindrical film was extended by the weight of the chemical solution bottle, and the chemical solution bottle dropped into the outer bag. Immediately after that, the tubular film returned to its original curl shape, and even when the outer bag was pushed, the air inside did not leak.
On the other hand, as the comparative example 2, what used the side seal of the both ends of the said cylindrical film by 2 mm width was used as the final outer bag similarly.

When a 250 mL chemical solution bottle was inserted into the opening of the obtained outer bag, the curl of the cylindrical film was extended by the weight of the chemical solution bottle, and the chemical solution bottle dropped into the outer bag. However, about 50% of cases in which the curl of the tubular film did not return to its original state were observed.
(3) Example 3 and Comparative Example 3
Example 3 and Comparative Example 3 were performed in order to demonstrate the effect of the third embodiment described above.

  First, as Example 3, a film (width 13 cm, length 11 cm) composed of an ethylene vinyl alcohol copolymer layer (10 μm) and a polyethylene layer (30 μm) was converted into a polyolefin inflation film (width 15 cm, width 11 cm) having a thickness of 20 μm. Inserted into a length of 10 cm) to obtain a cylindrical film having a width of 15 cm. One end thereof was sealed and fixed to the opening of a polyethylene bag, and then the cylindrical film was naturally curled to obtain a final outer bag.

When a 250 mL chemical solution bottle was inserted into the opening of the obtained outer bag, the curl of the cylindrical film was extended by the weight of the chemical solution bottle, and the chemical solution bottle dropped into the outer bag. Immediately after that, the tubular film returned to its original curl shape, and even when the outer bag was pushed, the air inside did not leak.
On the other hand, as Comparative Example 3, a cylindrical film having both ends sealed with a width of 2 mm was used, and a final outer bag was similarly formed.

  When a 250 mL chemical solution bottle was inserted into the opening of the obtained outer bag, the curl of the cylindrical film was extended by the weight of the chemical solution bottle, and the chemical solution bottle dropped into the outer bag. However, about 50% of cases in which the curl of the tubular film did not return to its original state were observed.

DESCRIPTION OF SYMBOLS 1 Container opening sealing tool 2 Outer film 3 Inner film 4 Outer plastic layer 5 Inner plastic layer 6 Open side 7 Side side 8 Side 9 Seal part 10 Cylindrical part 11 Unseal part 12 Non-cylindrical part 13 Seal part 14 Swelling Outlet 15 Side 16 Extension 17 Curling start side 18 Drug bottle 19 Outer bag 20 Film 21 Film 22 Sealing portion 23 Storage chamber 24 Opening 25 Container opening sealing device 26 Outer film 27 Inner film 28 Opening side 29 Side 30 Side 31 Seal Part 32 Cylindrical part 33 Unsealed part 34 Non-cylindrical part 35 Top part 36 Container opening sealing tool 37 Non-cylindrical part 38 Container opening sealing tool 39 Cylindrical inflation film 40 Curl film 41 Side edge 42 Side edge 43 Opening edge 44 Opening side 45 Outer side 46 Inner side 47 Internal space 48 Container opening sealing tool 49 Outer side Plastic layer 50 Inner plastic layer 51 Extension part 52 Curling start side 53 Interface 54 Interface 55 Interface 56 Recycle bin 57 Mouth 58 Garbage 59 Beverage pack 60 Straw 61 Seasoning pack

Claims (17)

An outer film that curls naturally,
An inner film overlaid on the outer film;
The outer film and the inner film are formed by selectively sealing at a predetermined length with at least two sealing points, and are defined by the outer film and the inner film with the sealing points as both ends. , A cylindrical portion that becomes a passage for taking in and out the contents of the container;
A non-cylindrical part formed without sealing between the outer film and the inner film,
The cylindrical portion is the end point, the opposite side of the end point is the start end, and the outer film is curled so as to wind the inner film in a region including the non-cylindrical portion,
A container opening sealer characterized in that the opening of the container can be sealed by attaching the cylindrical part to the inner periphery of the opening of the container. The outer film and the inner film have a quadrangular shape having two sides that are parallel and overlap with each other, and the cylindrical portion and the non-cylindrical portion are arranged to be continuous with each other along the two sides,
The outer film and the inner film are fixed by sealing the two corners on the start end side in a state where the curled outer film is 0.5% to 3% longer than the inner film. The container opening sealing device according to claim 1, wherein the container opening sealing device is characterized.   3. The outer film according to claim 1 or 2, wherein the outer film includes an extension portion that is drawn outward from an end portion of the inner film on a start end side of the curl and does not overlap the inner film. The container opening sealing tool described.   The container opening sealing device according to any one of claims 1 to 3, wherein the outer film is composed of at least two layers having different molding shrinkage rates. The outer film and the inner film are triangular or semicircular,
5. The container opening seal according to claim 1, wherein the cylindrical portion is formed at a position such that a top portion of the triangle and the semicircle becomes a start end of the curl. Ingredients. A flat and flexible tubular inflation film;
A curl film that curls naturally on one side of the tubular inflation film,
The curl film is curled so as to wind the tubular inflation film,
A container opening sealing device characterized in that the opening of the container can be sealed by attaching the end point of the curl to the inner periphery of the opening of the container.   The curl film is inserted into the tubular inflation film, and includes an extension portion that is drawn outward from an end portion of the tubular inflation film on a start end side of the curl. The container opening sealing tool according to claim 6.   The container opening sealer according to claim 6 or 7, wherein the curl film is composed of at least two layers having different molding shrinkage rates. One outer layer of the curl film is made of a material that can be heat-sealed with respect to the tubular inflation film,
9. The container opening sealer according to claim 8, wherein the other outer layer of the curl film is made of a material that is difficult to heat seal against the tubular inflation film.   A container having an opening sealed by the container opening sealing tool according to claim 1.   The container according to claim 10, wherein the container opening seal is attached so that a start end of the curl is disposed inside the curl.   The container according to claim 10, wherein the container opening sealing tool is attached so that a start end of the curl is disposed outside the curl.   The container according to claim 10, wherein the container is a pouch formed using a plastic film.   The container according to any one of claims 10 to 13, wherein the container is an outer bag for enclosing a drug container therein.   The container according to claim 10, wherein the container is a garbage bin.   The container according to claim 10, wherein the container is a beverage container.   The container according to claim 10, wherein the container is a seasoning container.

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