JP2011131893A - Storage container - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a storage container enabling a stored substance to be extracted with minimum wastage while having inexpensive manufacturing cost. <P>SOLUTION: The storage container is provided with a tube-shaped storing portion 2 formed of a resin having an extraction opening 2a enabling a stored substance to be sucked in a center area on one end side, and a circular opening on the other end side, and a bag-shaped storing portion 3 which is welded along the circular opening of the tube-shaped storing portion 2, enters inside the tube-shaped storing portion to be able to come into intimate contact with an inner surface of the tube-shaped storing portion in sucking through the extraction opening 2a, and is formed of a thin film in the shape of a bag to be a non-independent body, where the tube-shaped storing portion 2 changes in cross-sectional shape from a circular shape to an elliptical shape toward one end side from the other end side. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a container that contains a highly viscous fluid.

  2. Description of the Related Art Conventionally, as disclosed in, for example, Patent Document 1, a container that can store a fluid (hereinafter referred to as a container) having a high viscosity such as printing ink is known. Such a container is loaded in a predetermined position of an external device such as a printer, and the container is poured out by a suction mechanism provided in the external device and supplied to the predetermined position. . Specifically, the container disclosed in Patent Document 1 includes a container body formed in a bag shape with a thin-film resin film, and enclosed in the container body, and the container body is shaped like a box. And a support member having a spout protruding from the container main body.

  In the configuration described above, when suction is performed from the spout with a pump or the like, the thin film-like resin film is inverted so as to be turned back into the support member with the outflow of the contents, and the contents are completely poured out. Then, the resin film changes into a state of entering the inside of the support member.

JP 2001-199455 A

  The container described above has a structure in which a support member is enclosed inside the container main body formed of a resin film, and the support member is complicated in manufacturing process because the container main body is held in a predetermined shape. Cost becomes high.

  Further, since the container described above has a structure in which the surface of the support member and the container body are in close contact with each other, the adhesiveness between the two tends to be insufficient, such as wrinkles entering the container body. The stored item remains in the gap (the outer surface side of the support member), and the stored item may be wasted. In addition, the container body formed of a resin film has a box-shaped structure (bottomed structure) in consideration of shape retention, but in such a shape, it enters the inside of the support member during suction. However, the adhesiveness with the inner surface of the support member is ultimately inferior, and as a result, the contents are likely to remain on the inner surface side of the support member.

  The present invention has been made paying attention to the above-described problems, and an object of the present invention is to provide a container that can be poured out as much as possible without waste and at a low manufacturing cost.

  In order to achieve the above-described object, a container according to the present invention is a resin-molded cylinder having a spout capable of sucking an object in a central region on one end side and a circular opening on the other end side. A non-self-solid body is formed by a thin film film welded along a circular opening of the cylindrical storage section and entering the cylindrical storage section and adhering to the inner surface during suction from the spout A bag-shaped storage portion formed in a bag shape, and the cylindrical storage portion has a cross-sectional shape that changes from a circular shape to an elliptical shape from the other end side to the one end side. Features.

  The container having the above-described structure has a bag-shaped container formed in a non-self-shaped bag shape with respect to a resin-molded cylindrical container having a spout, and the other end side of the cylindrical container. Since the structure is welded along the circular opening, the structure is simple and can be easily manufactured, so that the cost can be reduced. In particular, since the bag-like accommodation portion is configured as a non-self-solid body (a state in which the three sides of the side portion and the bottom portion are welded), the welding process is simplified and the cost can be reduced.

  In addition, since the bag-like storage portion is configured as a non-self-solid, when welded along the circular opening of the cylindrical storage portion, the cross-sectional shape is circular at the weld portion, As the distance from the welded portion increases, the cross section changes to an elliptical shape. (This bag-like storage portion enters the cylindrical storage portion during suction from the spout of the cylindrical storage portion, and enters the inner surface thereof. In close contact). In consideration of such a shape, the cylindrical storage portion has a cross-sectional shape changed from a circular shape to an elliptical shape from the welded portion toward the spout side, and is made to correspond to the cross-sectional shape of the bag-shaped storage portion that enters. For this reason, the bag-like storage portion is closely attached to the inner surface of the cylindrical storage portion without causing wrinkles or the like, and the stored items can be efficiently poured out.

  In addition, since the cylindrical storage portion is formed in a circular shape at the welded portion with the bag-shaped storage portion, there is no occurrence of crushing or the like during suction of the stored items. The basic shape is a configuration that changes from a circular cross section to an elliptical cross section, and the entire inner surface is configured as a curved surface.

  According to the present invention, it is possible to obtain a container that is inexpensive to manufacture and can dispense the stored material as efficiently as possible.

The perspective view which shows one Embodiment of the container which concerns on this invention. (A) is a front view of a container, (b) is a side view of a container. 2A is a cross-sectional view taken along the line AA in FIG. 2A, FIG. 2B is a cross-sectional view taken along the line BB in FIG. 2B, and FIG. Sectional drawing along CC line. It is a figure which shows the structure of a bag-shaped accommodating part (non-self-solid), and is a figure which shows the structure which is not notching the corner part by the side of an edge part. It is a figure which shows the structure of the bag-shaped accommodating part shown in FIG. 1, (a) to (c) is a figure which shows the structural example of the notch part of the corner part by the side of an edge part. (A) to (f) is a view sequentially showing the deformation of the bag-like accommodation portion when the highly viscous accommodation is accommodated in the accommodation body shown in FIG. 1 and sucked from the spout. (A) is a perspective view which shows the structure of the obstruction | occlusion prevention member with which a spout is mounted | worn, (b) is a front view, (c) is a top view. The figure which shows the state which mounted | wore the spout part with the obstruction | occlusion prevention member shown in FIG.

  1 to 3 are views showing an embodiment of a container according to the present invention. FIG. 1 is a perspective view, FIG. 2 (a) is a front view of the container, and FIG. 2 (b) is a diagram of the container. 3A is a sectional view taken along line AA in FIG. 2A, FIG. 3B is a sectional view taken along line BB in FIG. 2B, and FIG. 3 (c) is a cross-sectional view taken along the line CC in FIG. 2 (b).

  The container 1 according to the present embodiment is configured to store a highly viscous fluid such as ink (referred to as a container), and has a cross-sectional shape that is circular (welded portion side) to elliptical as described later. A cylindrical storage portion 2 that changes into a shape (outlet side) and a bag-shaped storage portion 3 that is welded along a circular opening below the cylindrical storage portion 2 are provided.

  A spout 2 a capable of sucking the contents is formed on the cylindrical housing portion 2 on the central axis on one end side. In the present embodiment, the spout 2a is constituted by a screw cap, and the contents can be sealed and poured out by detaching a cap (sealing member) not shown. That is, when the container 1 is actually used, the container 1 is loaded in a predetermined location of the external device with the sealing member removed, and the container is poured out by a suction mechanism such as a pump. In addition, the above-mentioned spout 2a may have the function as an inlet which not only pours out a stored material but fills the stored material. In addition, the spout may be configured to insert a spout needle into the sealing member and suck the contents.

  The cylindrical housing portion 2 is integrally molded (blow molding, injection molding, etc.) with a plastic material such as polyethylene, polystyrene, polypropylene, polyvinyl chloride, etc. It is configured. In addition, as for the wall thickness, even if the bag-like storage portion 3 is reversed and pulled inside during suction, it is sufficient if the shape is maintained (for example, about 0.8 mm to 2.0 mm). .

  As for the outer shape, the cross-section changes from a circular shape to an elliptical shape from the welded portion 2d with the bag-shaped storage portion 3 toward the spout 2a side. This is to correspond to the cross-sectional shape of the bag-shaped storage portion 3 that enters the cylindrical storage portion 2 when the spout portion is sucked to pour out the stored items. That is, as will be described later, the bag-shaped storage portion 3 is configured as a non-self-solid body (a state in which the three sides of the side portion and the bottom portion are welded) that is easily manufactured. This is because the cross-sectional shape is circular at the welded portion 2d, but the cross-section changes to an elliptical shape as it is separated from the welded portion.

  As a result, when the bag-like accommodation portion 3 is reversed and entered into the cylindrical accommodation portion 2, the bag-like accommodation portion 3 is brought into close contact with the inner surface of the cylindrical accommodation portion without causing wrinkles or the like, and the contents are discharged from the spout 2a. It becomes possible to pour out efficiently. In this case, the shape change is not particularly limited. However, it is preferable that the shape is gradually and gradually changed even when the shape is suddenly changed from a circle to an ellipse. That is, it is preferable that a large step is not formed between the two.

  Further, the shape of the cylindrical housing portion 2 is not particularly limited, but in the present embodiment, as shown in FIGS. A curved portion 2b that gradually decreases in diameter is formed from the upper end side of the circumferential side wall toward the spout 2a located on the central axis. And it is preferable to form the radial protrusion 2c in the inner surface of this curved part 2b so that it may extend toward the spout 2a. The radial protrusions 2c constitute a flow path guide so that the contained material can effectively move toward the spout 2a at the time of suction, and can be integrally formed at the time of molding. In this case, the specific extension length, interval, and height of the radial protrusions 2c can be appropriately changed according to the size of the cylindrical storage part 2, the type (viscosity) of the storage object, and the like. It is.

  Note that the curved portion 2b formed in the above-described cylindrical housing portion only needs to correspond to the cutout portion formed in the bag-shaped housing portion 3, and can be appropriately modified. In other words, when receiving the suction action, the shape can be appropriately modified as long as the contents can be uniformly moved toward the spout.

  An opening end portion of the bag-shaped storage portion 3 is welded to the cylindrical storage portion 2. In this case, the cylindrical housing portion 2 has at least a circular opening having the same diameter over a predetermined length L, and the bag-shaped housing portion 3 has the same diameter as the cylindrical housing portion 2. It is welded to the outer peripheral surface of the region (within the range of the predetermined length L and the welded portion 2d is configured within this range).

  Specifically, the welding portion 2d may be, for example, about 5 mm to 15 mm, and the opening region of the bag-like storage portion 3 is covered here, and then heat welding using a ring-shaped heat bar or the like, It becomes possible to easily weld the bag-shaped storage portion 3 to the cylindrical storage portion 2.

  In addition, the cylindrical housing portion 2 is formed with a pair of protrusions 2e projecting outward at intervals of 180 degrees in the region where the bag-shaped housing portion is welded. By forming such a pair of protrusions 2e, as described above, when welding the bag-like storage portion 3 with a ring-shaped heat bar, it is possible to eliminate an unwelded region with respect to the welded portion, and to achieve a sealed state. It becomes possible to stabilize.

  The bag-like storage part 3 is a thin film having flexibility, such as polyethylene, polypropylene, polyvinyl chloride, etc. (thickness film having a thickness of about 0.05 mm to 0.15 mm. For example, the seal part layer is made of polyethylene. In order to reduce costs, for example, it is configured as a three-side sealed bag in which two thin film films are stacked and the periphery is welded. Yes.

Here, with reference to FIG.4 and FIG.5, the structure of a bag-shaped accommodating part is demonstrated.
The bag-shaped storage portion 3 in the present invention has one end opened so that the bag-shaped storage portion 3 can be welded to the outer peripheral surface (welded portion 2d) of the circular opening portion of the cylindrical storage portion 2, and the other end has a flat bottom portion. The structure is not formed (non-self-stereostructure) (welded region 3A is indicated by oblique lines). Moreover, the bag-shaped accommodating part 3 of this embodiment becomes a structure by which the corner part by the side of the edge part opposite to the welding part 2d was notched. Specifically, the shape of the side surface is not rectangular as shown in FIG. 4, but as shown in FIG. 5A, the corner on the end side is made to correspond to the curved portion 2 b of the cylindrical housing portion 2. By cutting the portion into a curved shape (forming the cutout portion 3d), a corner portion P that is approximately 90 degrees or less occurs between the bottom edge 3a and the lateral edge 3b inside the housing shown in FIG. It has no configuration.

  As shown in FIGS. 5B and 5C, the notch between the bottom edge 3a and the horizontal edge 3b inside the housing is not particularly limited. As shown, the bottom edge 3a may be cut out in a straight line so as to be long, or as shown in FIG. 5C, the bottom edge 3a may be cut out.

  In this case, the shape of the cutout portion (edge shape to be a cutout portion) 3d is preferably formed in a shape along the curved portion 2b formed in the cylindrical housing portion 2 described above. Specifically, the shape shown in FIG. 5 (b) preferably corresponds to the cylindrical housing portion in which the curved portion shown in FIG. 2 is a relatively gentle surface, as shown in FIG. 5 (c). The shape is preferably made to correspond to a cylindrical housing portion in which the curved portion 2b has a relatively long surface along the longitudinal direction as compared with the configuration shown in FIG.

  In this way, by forming the notch, it is possible to reduce the possibility that the stored item remains in the corner.

  Moreover, it is preferable to set the internal capacity of the bag-shaped storage part 3 to be the same (including substantially the same) as the internal capacity of the cylindrical storage part 2. Thereby, when the bag-shaped storage part 3 receives suction from the spout 2a portion, the bag-shaped storage part 3 is retracted and drawn into the internal space of the cylindrical storage part 2 as the stored item flows out. When the inner surface is in close contact with the inner surface of the cylindrical storage portion 2, the bottom edge 3a of the bag-shaped storage portion is positioned near the opening 2A on the storage portion side of the spout 2a by setting the inner volume as described above. Therefore, it is possible to dispense the contents effectively and without waste.

  That is, when the internal capacity of the bag-shaped storage portion 3 is larger than that of the cylindrical storage portion 2, the bag-shaped storage portion 3 is reversed to the internal space of the cylindrical storage portion 2 as the contents flow out. When it is pulled in, the bottom edge 3a of the bag-like storage part is bent, and the tendency to block the opening 2A on the storage part side of the spout 2a becomes strong, so that the suction force does not act and the spout 2a There is a high possibility that the contents present in the vicinity of the opening 2A on the container side will remain without being completely sucked. On the other hand, when the internal capacity of the bag-like storage part 3 is smaller than that of the cylindrical storage part 2, the bag-like storage part 3 is reversed to the internal space of the cylindrical storage part 2 as the storage part flows out. When the distance between the bottom edge 3a inside the bag-like container and the opening 2A on the container portion side of the spout 2a is separated, the bottom edge 3a is reduced when the internal pressure is reduced by suction. There is a high possibility that sufficient suction will not be applied to the contents existing in this area and it will remain as it is.

  Next, a container with a high viscosity (a commercially available mayonnaise) is accommodated in the container having the structure shown in FIGS. 1 and 2, a certain suction force is applied, and the result of dispensing the container is shown in FIG. A description will be given with reference to a) to (f).

  First, in a state where the accommodation is accommodated in the cylindrical accommodation portion 2 and the bag-like accommodation portion 3 (see FIG. 6A), when the accommodation is poured out by sucking the spout 2a, The bag-like storage portion 3 gradually shrinks while generating vertical wrinkles, and the bottom edge 3a rises toward the circular opening (region of the welded portion 2d) of the cylindrical storage portion 2 (FIG. 6B and ( c)). When the suction is further performed, the bottom edge 3a inside the housing rises through the circular opening (region of the welded portion 2d) of the cylindrical housing portion 2 as the stored material flows out, and the bag-like housing portion 3 Inverted and drawn into the internal space of the cylindrical housing 2 (see FIGS. 6D and 6E). When further sucked, the inner surface of the bag-shaped storage portion 3 is brought into close contact with the inner surface of the cylindrical storage portion 2 (see FIG. 6 (f)), and the storage is concentrated in the storage portion-side opening region of the spout 2. It becomes like this.

  As shown in FIG. 6 (f), when the bag-shaped storage portion 3 is reversed and drawn into the internal space of the cylindrical storage portion 2, the inner surface of the bag-shaped storage portion 3 becomes the cylindrical storage portion 2. It comes in close contact with the inner surface. In this case, the cylindrical housing portion 2 has a cross-sectional shape that changes from a circular shape to an elliptical shape from the welded portion toward the spout side, and corresponds to the cross-sectional shape of the bag-shaped housing portion 3 that enters. The bag-like storage portion 3 can be easily brought into close contact with the inner surface of the cylindrical storage portion 2 without causing wrinkles or the like, and the stored items can be efficiently poured out. Further, the cylindrical housing portion 2 has a circular opening having the same diameter over a predetermined length L, and the bag-like housing portion 2 is welded within this range. When the shape accommodating portion 3 is reversed and enters, wrinkles and the like are prevented from occurring in this portion, and the possibility that the contents remain is reduced.

  Further, since the cylindrical housing portion 2 has a circular welded portion with the bag-shaped housing portion 3, the cylindrical housing portion 2 is not crushed or the like during suction of the contents. The basic shape is changed from a circular cross-section to an elliptical cross-section, and the entire inner surface is configured as a curved surface, so that it is difficult for the contents to remain during suction of the contents.

  Moreover, since the inner surface of the cylindrical housing part 2 is a curved surface and no corners are present, the bag-like housing part 3 becomes difficult to adhere in a state where wrinkles occur, It is possible to suck out (push out). Further, when the inner surface of the bag-shaped storage portion 3 is in close contact with the inner surface of the cylindrical storage portion 2, the suction force does not act on the bag-shaped storage portion 3, but the diameter gradually decreases toward the spout 2a. Therefore, even if the suction force is reduced, it is possible to pour out the contents as much as possible.

  Further, as described above, since the radial protrusions 2c extending toward the spout 2a are formed on the inner surface of the curved portion 2b, it is easy to secure a flow path toward the spout 2a, which is efficient. It is possible to pour out the contents.

  Furthermore, by making the internal volume of the bag-shaped storage part 3 the same as that of the cylindrical storage part 2, as shown in FIG. 6 (f), the bottom edge 3a region can be positioned in the vicinity of the spout part. In this way, it is possible to efficiently pour out the stored items even if the internal pressure is reduced by suction. In particular, the bag-like storage portion 3 is configured to be non-self-solid and to cut off the corner portion on the end portion side so that there is no acute corner portion at the bottom edge portion, and the edge of the notch portion. Since the shape is formed so as to be along the curved portion of the cylindrical accommodating portion 2, it is possible to efficiently pour out without leaving the contents.

  Actually, when the suction test was conducted with the container having the structure shown in FIG. 1 and FIG. 2, the residual amount of the above-mentioned stored object can be reduced to 2.0% or less, and the stored object can be efficiently stored. Results that could be dispensed were obtained.

  The container 1 as described above has a cylindrical storage part 3 formed in a bag shape that is non-self-solid with respect to the resin-molded cylindrical storage part 2 having the spout 2a. Since the structure is welded along the circular opening on the other end side of the housing portion 2, the structure is simple and can be easily manufactured, so that a configuration that is easy to reduce costs, recycle, etc. can be obtained. .

  FIG. 7 shows a blocking prevention member mounted on the spout portion of the container 1 described above. FIG. 7A is a perspective view, FIG. 7B is a front view, and FIG. 7C is a plan view. For example, by installing the blocking prevention member 20 shown in FIG. 7 in the container 1 at the spout portion as shown in FIG. 8, it becomes possible to pour out the contained material more efficiently.

  The blocking prevention member 20 is integrally formed of resin or the like, and the cylindrical portion 21 inserted into the spout 2a and the circumferential edge 2a of the spout 2a so as not to fall into the interior when inserted into the spout. ′ And a flange 22 that abuts, and is configured to be detachable from the spout 2.

  The cylindrical portion 21 has an axial length that is substantially the same as the axial length of the spout 2a, and is configured such that its tip is located in the opening 2A on the accommodating portion side of the spout 2a. A plurality of cutout grooves 21a (in the present embodiment, four locations at approximately 90 ° intervals) are formed on the end surface of the cylindrical portion 21 at predetermined intervals.

  Such a cut-out groove 21a is formed at the stage where the inner surface of the bag-like storage portion 3 finally comes into close contact with the inner surface of the cylindrical storage portion 2 during suction, and suction force no longer acts on the bag-like storage portion 3. As shown in FIG. 8, it has a function of making it easy to pour out the contents remaining near the bottom edge 3 a (near the opening 2 </ b> A) of the bag-shaped container 3 through the notch groove 21 a. That is, until the inner surface of the bag-shaped storage unit 3 is in close contact with the inner surface of the cylindrical storage unit 2, the stored item is poured out through the cylindrical unit 21, but the remaining amount of the stored item is finally reduced. And the residue which exists in the vicinity becomes easy to pour out via the notch groove 21a with a narrow movement path | route, and it becomes possible to reduce the residual amount of a contained thing as much as possible.

  By installing the blocking prevention member 20 as described above, it becomes possible to further reduce the final remaining rate of the stored items.

  As shown in the drawing, the blocking prevention member 20 as described above may be configured to be detachable from the spout 2 or may be integrally formed in advance at the spout. Further, the length and thickness of the cylindrical portion 21 and the number of formed notches 21a can be appropriately modified.

  Although the embodiments of the present invention have been described above, the present invention is not limited to the above-described embodiments, and various modifications can be made.

  For example, the size of the cylindrical housing portion 2, the shape from the side surface to the spout 2, and the configuration of the spout 2a in the tubular housing 2 can be appropriately modified. Moreover, when forming a notch part in the edge part of the bag-shaped accommodating part 3, it should just be notched so that the acute angle part of 90 degrees or less may not exist in the accommodation space. For this reason, the end portion may be cut out in an arc shape, or may be cut out in multiple stages with a plurality of straight lines without making the arc shape.

DESCRIPTION OF SYMBOLS 1 Container 2 Tubular accommodating part 2a Spout 2b Curved part 2d Welding part 3 Bag-shaped accommodating part 3a Bottom edge 3b Horizontal edge 3d Notch part 20 Blocking prevention member

Claims (9)

A resin-molded cylindrical container having a spout capable of sucking the contents in the central region on one end side and a circular opening on the other end side,
Formed into a non-self-contained bag shape by a thin film that is welded along the circular opening of the cylindrical housing portion and enters the cylindrical housing portion and adheres to the inner surface during suction from the spout. A bag-shaped container,
Have
The cylindrical housing part has a cross section whose shape changes from a circular shape to an elliptical shape from the other end side to the one end side.   2. The container according to claim 1, wherein the bag-shaped housing portion has a notch formed at a corner on the end portion side opposite to a welded portion with respect to the cylindrical housing portion. The cylindrical accommodating portion has a curved portion that decreases in diameter toward the spout,
The container according to claim 2, wherein an edge shape of the notch formed in the bag-shaped container is a shape along the curved part.   4. The container according to claim 3, wherein a radial protrusion is formed on an inner surface of the curved portion of the cylindrical container so as to extend toward the spout.   5. The container according to claim 1, wherein the cylindrical container and the bag-shaped container are formed to have the same internal capacity.   In the cylindrical housing portion, the circular opening on the other end side is formed with the same diameter over a predetermined length, and the bag-like housing portion has the same diameter as the cylindrical housing portion. The container according to any one of claims 1 to 5, wherein the container is welded to an outer peripheral surface of a region that is present.   The pair of protrusions that protrude outwards at intervals of 180 degrees are formed in the tubular storage part in an area where the bag-shaped storage part is welded. Container.   A blocking prevention member comprising a cylindrical portion in which a notch groove defining a flow path is formed between the bag-like storage portion that has entered the cylindrical storage portion when sucked from the discharge port. The container according to any one of claims 1 to 7, wherein the container is detachable.   The container according to any one of claims 1 to 8, wherein the spout has a threaded plug.

Images