CN101934882A - container - Google Patents

Abstract

The invention provides a kind of host body, it comprises: the tubular resettlement section that resin forming forms, its at one end the middle section of side have the notes row mouthful that can attract to accommodate thing, and distolaterally have a circular open at another; Form the bag shape resettlement section of the bag shape that is non-separate component by diaphragm, its along the circular open of described tubular resettlement section by deposited, when the attraction by described notes row mouthful, enter in the described tubular resettlement section and can be close on the inside face of this tubular resettlement section, wherein, another is distolateral towards one distolateral from described in described tubular resettlement section, and its cross section changes shape from circle to ellipse.

Description

containment body

technical field

The present invention relates to a container for containing highly viscous fluids. the

Background technique

Currently, for example, as disclosed in JP-A-2001-199455, there is known a container capable of containing a high-viscosity fluid such as printing ink (hereinafter referred to as "contained object"). Such a storage body is loaded in a predetermined position of an external device such as a printer, and the content is pumped and discharged to the predetermined position by a suction mechanism provided in the external device. Specifically, the storage body disclosed in Japanese Patent Application Laid-Open No. 2001-199455 has: a container body formed into a bag shape by a film-like resin film; Box-shaped with a spout protruding from the container body. the

And, in the above-mentioned structure, when suction is performed from the pouring port by a pump or the like, the film-like resin film is turned over in the manner of redirecting the inside of the supporting member to be rolled up along with the outflow of the contents, and when the contents are poured and discharged, , the resin film is changed into a state of entering the inside of the supporting member. the

The above container has a structure in which a support member is incorporated inside a container body formed of a resin film, and the support member holds the container body in a predetermined shape, complicating the manufacturing process and increasing the cost. the

In addition, the above-mentioned container has a structure in which the surface of the support member and the container body are widely in close contact. Therefore, if wrinkles or the like occur on the container body, the adhesion between the two tends to become insufficient. The contents remain in the gap between the holders (the outer surface side of the support member), and there is a possibility that the contents will be wasted. In addition, for the container main body formed by the resin film, a box-shaped structure (bottomed structure) is adopted in consideration of shape retention. However, in such a shape, even if it enters the inside of the support member during suction, the final Adherence to the inner surface of the support member is poor, and as a result, the contents tend to remain on the inner surface side of the support member. the

Therefore, there is a need for a storage body that is inexpensive to manufacture and can discharge the content as little as possible. the

Contents of the invention

In one aspect of the present invention, the storage body includes: a cylindrical storage portion formed by resin molding, which has a discharge port capable of sucking the content in a central region on one end side, and has a circular opening on the other end side; The film sheet forms a non-independent bag-shaped bag-shaped container, which is welded along the circular opening of the cylindrical container, and enters into the cylindrical container when it is sucked by the injection port And can be closely attached to the inner surface of the cylindrical receiving portion, wherein the cylindrical receiving portion changes shape from a circular to an elliptical cross section from the other end side to the one end side. the

The storage body having the above-mentioned structure is formed by forming a non-independent pouch-shaped storage portion along a circle on the other end side of the cylindrical storage portion with respect to the cylindrical storage portion formed by resin molding having a discharge port. The structure of the opening welding, therefore, the structure becomes simple, and can be easily manufactured, and the cost is reduced. In particular, the bag-shaped housing portion is configured as a non-independent body (the side portion and the bottom portion are welded together), so the welding process becomes simple and low cost is realized. the

In addition, the above-mentioned bag-shaped housing part is constructed as a non-independent body, so when it is welded along the circular opening of the cylindrical housing part, its cross-sectional shape becomes circular at the welded part, but as it moves away from the welded part, Its cross-section changes to an ellipse (the bag-shaped housing part enters into the cylindrical housing part and closely adheres to its inner surface when it is sucked from the discharge port of the cylindrical housing part). Considering such a shape, the cross-section of the tubular housing part changes from a circular shape to an elliptical shape from the welded part toward the injection and discharge port side, and corresponds to the cross-sectional shape of the bag-shaped housing part that enters. Therefore, in the bag-shaped housing The part is tightly adhered to the inner surface of the cylindrical housing part without wrinkles and the like, and the content can be efficiently poured and discharged. the

In addition, the welded part of the cylindrical housing part and the bag-shaped housing part is formed in a circular shape, so that no crushing or the like will occur when the contents are sucked, and the basic shape of the cylindrical housing part is from a circular cross-section. The structure is changed to an elliptical cross-section, and the entire inner surface is formed into a curved surface, so that it is difficult for the contents to remain when the contents are sucked. the

In addition, in one aspect of the present invention, the storage body includes: a cylindrical housing portion formed by resin molding, which has a discharge port capable of sucking the content in a central region on one end side; A non-independent pouch-shaped bag-shaped container, which is welded along the circular opening on the other end side of the cylindrical container, enters the cylindrical container when it is sucked by the discharge port, and It can be closely attached to the inner surface of the cylindrical housing part, and it is characterized in that the bag-shaped housing part has a range of 90% to 110% of the storage length relative to the length direction of the cylindrical housing part. Length, and cut off the corner of the end side opposite to the welded part. the

The storage body of the above-mentioned structure is formed by forming a non-independent pouch-like storage part along the circle on the other end side of the cylindrical storage part with respect to the cylindrical storage part formed by resin molding with a discharge port. The structure of the opening welding, therefore, the structure becomes simple, and can be easily manufactured, and the cost is reduced. In addition, the basic part of the storage body is cylindrical, so when the storage is sucked, it is difficult to leave the storage, and the corner of the bag-shaped storage part is cut off on the opposite end side to the welded part in a non-independent body, Therefore, it is difficult to leave the contents. Furthermore, the bag-shaped storage part is configured to have a length in the range of 90% to 110% of the storage length relative to the longitudinal direction of the cylindrical storage part. The bottom edge area can be located in the vicinity of the filling and draining opening, thereby effectively filling and draining the contents. the

Objects and advantages of the present invention are as follows. Some of these will be obvious or may be learned by practice of the invention. The objects and advantages of the invention can be realized and obtained by means of the ways and combinations particularly pointed out hereinafter. the

Description of drawings

The accompanying drawings of the invention, which illustrate the parts of the invention, illustrate specific embodiments of the invention and, together with the foregoing general description and the following detailed description, are sufficient to explain the principles of the invention. the

FIG. 1 is a perspective view showing a container according to a first embodiment of the present invention. the

Fig. 2A is a front view of the container. the

Fig. 2B is a side view of the container. the

Fig. 3A is a cross-sectional view along line A-A of Fig. 2A. the

Fig. 3B is a cross-sectional view along line B-B of Fig. 2B. the

Fig. 3C is a cross-sectional view along line C-C of Fig. 2B. the

FIG. 4 is a diagram showing the structure of a bag-shaped housing portion (non-independent body), and is a diagram showing a structure where a corner portion on the side of an end portion is not cut. the

5A-C are diagrams showing the structure of the bag-shaped storage portion shown in FIG. 1 , and are diagrams showing a configuration example of a notch in a corner portion on the end side. the

6A-F are diagrams sequentially showing the deformation of the bag-shaped container when a high-viscosity container is stored in the container shown in FIG. 1 and sucked from the discharge port. the

Fig. 7A is a perspective view of a blockage preventing member attached to the spout. the

Fig. 7B is a front view of the blockage prevention member attached to the drain port. the

Fig. 7C is a plan view of the blockage preventing member attached to the spout. the

Fig. 8 is a view showing a state where the blockage preventing member shown in Fig. 7 is attached to the pouring and discharging port portion. the

Fig. 9A is a perspective view showing a container according to a second embodiment of the present invention. the

Fig. 9B is a front view showing a container according to a second embodiment of the present invention. the

Fig. 10A is a diagram showing the structure of the cylinder housing shown in Figs. 9A and 9B. the

10B and 10C are diagrams showing modified examples of the cylinder housing. the

FIG. 11A is a diagram showing the structure of the bag-shaped storage portion without cutting the corner portion on the end portion side. the

12A-C are diagrams showing the structure of the bag-shaped storage portion shown in FIGS. 9A and 9B , and are diagrams showing an example of a cutting state of a corner portion on the end side. the

13A-F are diagrams sequentially showing the deformation of the bag-shaped container when a high-viscosity container is stored in the container shown in FIGS. 9A and 9B and sucked from the discharge port. the

Detailed ways

As shown in FIGS. 1 to 3 , a storage body 1 according to a first embodiment of the present invention has a cylindrical storage portion 2 for storing a highly viscous fluid such as ink (referred to as a “storage object”), and As described later, its cross-sectional shape changes from circular (welded part side) to oval (injection and discharge port side); apply. the

In the above-mentioned cylindrical housing portion 2, a discharge port 2a capable of sucking the content is formed on the central axis at one end side. In the present embodiment, the pouring and discharging port 2a is constituted by a screwed plug, and the contents can be sealed and drained by attaching and detaching a cap (sealing member) not shown. That is, when the storage body 1 is actually used, it is loaded in a predetermined position of an external device with the sealing member removed, and the content is drained by a suction mechanism such as a pump. Moreover, the filling and draining port 2a can not only drain the content, but also serve as an injection port for filling the content. In addition, the drain port may have a structure in which a drain needle is inserted into the sealing member to suck the contents. the

The above-mentioned cylindrical housing part 2 can be integrally molded (blow molding, injection molding, etc.) by plastic materials such as polyethylene, polystyrene, polypropylene, polyvinyl chloride, etc., and can be formed by a production method and raw materials that can be manufactured at low cost. . In addition, the wall thickness may be such that the shape of the bag-shaped housing portion 3 is maintained even if it is inverted and pulled in during suction (for example, about 0.8 mm to 2.0 mm). the

In addition, the external shape thereof changes from a circular shape to an elliptical cross-sectional shape from the welded portion 2d with the bag-shaped housing portion 3 toward the discharge port 2a side. This is because it corresponds to the cross-sectional shape of the bag-shaped housing part 3 that enters into the cylindrical housing part 2 when the filling and draining port portion is sucked to drain the contents. That is, as will be described later, the bag-shaped housing portion 3 is constituted as a non-independent body that is easy to manufacture (in a state where the three sides and the bottom are welded), so when welding along the circular opening of the cylindrical housing portion 2, Its cross-sectional shape is circular at the welded portion 2d, but changes to an elliptical cross-section as it moves away from the welded portion. the

As a result, when turning over and entering into the cylindrical housing portion 2, the bag-shaped housing portion 3 will not be wrinkled or the like and will closely adhere to the inner surface of the cylindrical housing portion, and the injection and discharge port 2a can be efficiently drained. Drain contents. In this case, the change in shape is not particularly limited, but a continuous and gradual change in shape is preferable to a sharp change from a circle to an ellipse. That is, a structure in which a large step difference is not formed between the two is preferable. the

In addition, there is no particular limitation on the shape of the cylindrical storage part 2, but in this embodiment, as shown in FIGS. The upper end side of the center axis gradually reduces the diameter of the curved portion 2b toward the injection and discharge port 2a located on the central axis. Furthermore, it is preferable to form radial projections 2c on the inner surface of the bent portion 2b so as to extend toward the discharge port 2a. The radial protrusion 2c constitutes a flow guide during suction, so that the content can move toward the discharge port 2a efficiently, and the radial protrusion 2c can be integrally formed during molding. In this case, the specific extension length, interval, and height of the radial protrusions 2c can be appropriately modified according to the size of the cylindrical housing portion 2, the type (viscosity) of the content, and the like. the

In addition, the curved portion 2b formed in the above-mentioned cylindrical housing portion may correspond to a notch described later formed in the bag-shaped housing portion 3, and may be deformed appropriately. That is, the shape can be appropriately deformed as long as the content is configured to move uniformly toward the discharge port when receiving a suction action. the

The opening end portion of the bag-shaped housing portion 3 is welded to the cylindrical housing portion 2 . In this case, at least the circular opening of the cylindrical housing portion 2 is formed to have the same diameter within a predetermined length L, and the bag-shaped housing portion 3 is welded to the area of the cylindrical housing portion 2 constituting the same diameter (the predetermined length L). In the range of L, the outer peripheral surface of the welded portion 2d) is formed in this range. the

Specifically, the welded portion 2d may be, for example, about 5 mm to 15 mm, and after covering the opening area of the bag-shaped housing portion 3 thereon, the bag-shaped housing portion 3 can be easily fused by heat welding with a heating rod or the like. Apply to the cylindrical container 2. the

In addition, in the cylindrical housing part 2, a pair of protrusions 2e protruding outward at intervals of 180 degrees are formed in the area where the bag-shaped housing part is welded. By forming such a pair of protrusions 2e, as described above, the bag-shaped housing portion 3 can be welded by the heating rod, thereby stabilizing the sealed state. the

The above-mentioned bag-shaped housing part 3 is constituted by surrounding a flexible film-like film (a film sheet with a thickness of about 0.05 mm to 0.15 mm, for example, a laminated film using polyethylene as a sealing part layer) such as polyethylene or polypropylene. For the welded pouch shape, in order to realize cost reduction, for example, two film-like films are stacked and formed into a three-way sealed bag with the peripheries welded together. the

Here, the structure of the bag-shaped storage portion will be described with reference to FIGS. 4 and 5 . the

The bag-shaped housing part 3 of the present invention has a structure in which one end is open and the other end is not formed with a flat bottom so that it can be welded to the outer peripheral surface (welding part 2d) of the circular opening part of the cylindrical housing part 2. (non-isolated structure) (the welded region 3A is indicated by a dotted line). In addition, the bag-shaped accommodation part 3 of this embodiment has the structure which cut|disconnected the corner part of the end part side opposite to the welded part 2d. Specifically, the shape of the side surface is not rectangular as shown in FIG. 4, but as shown in FIG. The notch 3d) does not form a corner P of approximately 90 degrees or less between the bottom edge 3a and the lateral edge 3b of the housing shown in FIG. 4 . the

Moreover, as shown in Figures 5B and 5C, there is no particular limitation on the form of the gap between the bottom edge 3a and the lateral edge 3b inside the housing. As shown in Figure 5B, the bottom edge 3a can also be elongated and linear As shown in FIG. 5C, the cutting may be performed so that the bottom edge 3a is shortened. the

In this case, it is preferable that the shape of the notch (the edge shape constituting the notch) 3d is formed so as to follow the shape of the curved portion 2b formed in the above-mentioned cylindrical housing portion 2 . Specifically, the shape shown in FIG. 5B is preferably corresponding to the curved portion shown in FIG. 2 as a relatively flat cylindrical housing portion, and the shape shown in FIG. 5C is preferably corresponding to the structure shown in FIG. 2 The curved portion 2b corresponds to a cylindrical housing portion having a longer surface along the longer longitudinal direction. the

In this way, by forming the notch, it is possible to reduce the possibility that the contents remain in the corner. the

In addition, it is preferable that the inner capacity of the bag-shaped housing part 3 is set to be the same (including substantially the same) as the inner capacity of the cylindrical housing part 2 . Thus, when the bag-shaped housing part 3 is sucked from the injection and discharge port 2a part, when the content flows out to the internal space of the cylindrical housing part 2 and is pulled in, the bag-shaped housing part 3 When the inner surface is in close contact with the inner surface of the cylindrical housing part 2, by setting the above-mentioned internal capacity, the bottom edge 3a of the bag-like housing part is positioned near the opening 2A of the housing part side of the pouring port 2a, which can effectively and without Wastefully draining contents. the

That is, if the inner capacity of the bag-shaped housing part 3 is greater than that of the cylindrical housing part 2, the bag-shaped housing part 3 is turned over and drawn into the inner space of the cylindrical housing part 2 along with the outflow of the contents. The tendency to block the opening 2A on the side of the side of the side of the side of the side of the side of the side of the filling port 2a such as bending of the bottom edge 3a of the shape side of the side of the side of the side of the side of the side of the side of the side of the side of the side of the side of the side of the body 3a becomes stronger. There is a high possibility that the contents near 2A will remain. On the other hand, if the inner capacity of the bag-shaped housing part 3 is smaller than that of the cylindrical housing part 2, the bag-shaped housing part 3 is turned upside down along with the outflow of the contents and is drawn into the inner space of the cylindrical housing part 2 at the same time. The distance between the bottom edge 3a of the bag-shaped container part and the opening 2A on the container side of the pouring port 2a is far away, so that when the internal pressure drops due to suction, there is no storage matter in the region of the bottom edge 3a. Sufficient attractive force is applied, so the possibility of remaining in this state increases. the

Next, a method of accommodating highly viscous content (commercially available mayonnaise) in the container of the structure shown in FIG. 1 and FIG. The results are explained. the

First, in the state where the content is stored in the cylindrical storage part 2 and the bag-shaped storage part 3 (refer to FIG. 6A), when the content is drained by adding suction to the discharge port 2a, the bag-shaped storage part 3 The vertical lines gradually shrink while forming, and the bottom edge 3a rises toward the circular opening of the cylindrical housing part 2 (area of the welded part 2d) (see FIG. 6B and FIG. 6C ). When further sucking, along with the outflow of the content, the bottom edge 3a of the storage interior passes through the circular opening of the cylindrical housing part 2 (the area of the welded part 2d) and rises, and the bag-shaped housing part 3 moves toward the direction of the cylindrical housing part 2. The inner space is reversed and pulled in (see Figure 6D and Figure 6E). Then, when further sucked, the inner surface of the bag-shaped container 3 is in close contact with the inner surface of the cylindrical container 2 (refer to FIG. 6F ), and the contents are collected in the container-side opening area of the discharge port 2a. the

And, as shown in FIG. 6F , when the bag-shaped housing part 3 is turned over and drawn into the inner space of the cylindrical housing part 2, the inner surface of the bag-shaped housing part 3 is in close contact with the inner surface of the cylindrical housing part 2. . In this case, the cross-sectional shape of the cylindrical housing part 2 changes from a circle to an ellipse from the welded part toward the injection and discharge port side, and corresponds to the cross-sectional shape of the bag-shaped housing part 3 that enters. The bag-shaped container 3 is easily adhered to the inner surface of the cylindrical container 2 without wrinkles and the like, and the contents can be efficiently poured and discharged. In addition, the circular opening in the cylindrical housing portion 2 is formed to have the same diameter within a predetermined length L, and the bag-shaped housing portion 2 is welded within this range, so that the bag-shaped housing portion 3 is turned over in the welded portion region and enters. When, wrinkles and the like are prevented from being generated in this part, and the possibility of remaining contents can be reduced. the

In addition, the welded portion of the cylindrical housing portion 2 and the bag-shaped housing portion 3 is formed in a circular shape, so that no crushing or the like occurs when the contents are sucked, and the basic shape of the cylindrical housing portion changes from a circular cross section to a circular shape. The cross-section is changed to an ellipse, and the inner surface is formed as a curved surface as a whole, so it is difficult for the contents to remain when the contents are sucked. the

In addition, since the inner surface of the cylindrical housing part 2 is a curved surface without corners, the bag-like housing part 3 is less likely to be wrinkled and tightly adhered, and the content can be sucked out (pressed out) as much as possible. In addition, when the inner surface of the bag-shaped housing part 3 is in close contact with the inner surface of the cylindrical housing part 2, the suction force does not act on the bag-shaped housing part 3, but forms a curve that gradually decreases in diameter toward the side of the injection and discharge port 2a. shape, so even if the suction force is reduced, the content can be discharged as much as possible. the

In addition, as described above, since the radial protrusion 2c extending toward the discharge port 2a is formed on the inner surface of the curved portion 2b, it is easy to ensure a flow path toward the discharge port 2a, and the contents can be efficiently discharged. the

Furthermore, by setting the inner capacity of the bag-shaped housing part 3 to be the same as that of the cylindrical housing part 2, as shown in FIG. Even if the pressure drops, it can also effectively drain the contents. In particular, the bag-shaped housing part 3 is configured as a non-independent body by cutting off corners on the end side so that there is no corner forming an acute angle at the bottom edge, and the edge shape of the notch is formed so as to follow the shape of the cylindrical housing part 2. Therefore, the content can be effectively discharged without residue. the

And, when carrying out suction test in the storage body of the structure shown in Fig. 1 and Fig. 2 actually, can obtain such result: the residual amount of above-mentioned storage can be set at 2.0% or less, and can drain effectively. containment. the

Moreover, the above-mentioned container 1 is formed by forming a non-independent bag-shaped bag-shaped container 3 along the other end of the cylindrical container 2 with respect to the cylindrical container 2 formed by resin molding having the pouring port 2a. The circular opening on the side is welded. Therefore, the structure is simple and can be easily manufactured, and a structure such as cost reduction and easy reuse can be obtained. the

FIG. 7 shows the blockage preventing member attached to the discharge port portion of the storage body 1, FIG. 7A is a perspective view, FIG. 7B is a front view, and FIG. 7C is a plan view. In the storage body 1, for example, by installing the blocking preventing member 20 shown in FIGS. 7A-C to the filling and discharging port portion shown in FIG. 8, the contents can be efficiently drained. the

The blockage preventing member 20 is integrally formed of resin or the like, and has a cylindrical portion 21 to be inserted into the discharge port 2a, and a protrusion that abuts against the peripheral edge 2a' of the discharge port 2a so as not to fall into the inside when inserted into the discharge port. The edge 22 is configured to be attachable and detachable with respect to the pouring port 2a. the

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

During suction, at the stage where the inner surface of the bag-shaped housing part 3 is in close contact with the inner surface of the cylindrical housing part 2 and the suction force does not act on the bag-shaped housing part 3, as shown in FIG. 21a has the function of easily discharging the contents remaining near the bottom edge 3a of the bag-shaped container 3 (near the opening 2A) through the notch groove 21a. That is, before the inner surface of the bag-shaped housing part 3 is in close contact with the inner surface of the cylindrical housing part 2, the content is poured and discharged through the cylindrical part 21, but when the remaining amount of the content is finally reduced, there will be a hole in its vicinity. Residues are easily drained through the notched groove 21 a with a narrower movement path, so that the residual amount of the contents can be reduced as much as possible. the

By providing such an occlusion preventing member 20 as described above, it is possible to further reduce the residual rate of the final storage. the

Furthermore, as shown in the figure, the blockage preventing member 20 described above may be configured to be detachable from the injection port 2a, or may be formed integrally with the injection port portion in advance. In addition, the length and thickness of the cylindrical portion 21, the number of formed notch grooves 21a, and the like can be appropriately modified. the

9 and 10 show a container according to a second embodiment of the present invention. As shown in the figure, the container 101 of this embodiment accommodates highly viscous fluids such as ink (referred to as "container"), and has: a cylindrical container 102 with a circular cylindrical shape in cross-section; The bag-shaped housing portion 103 is welded along the circular opening below the cylindrical housing portion 102 . The container 101 has a circular cross-sectional shape in the longitudinal direction, and does not change the cross-sectional shape as shown in the first embodiment. the

In the above-mentioned cylindrical storage part 102, a discharge opening 102a capable of sucking the content is formed on the central axis of one end side, and a sealing member (not shown) such as a cover is attached to the discharge opening 102a, so that it can be sealed and stored. things. In addition, in actual use, it is loaded in a predetermined part of the external device with the sealing member removed, and the content is drained by a suction mechanism such as a pump. In this case, it is also possible to have a structure in which the contents can be sucked by inserting the injection needle into the sealing member. the

The above-mentioned cylindrical housing part 102 can be integrally molded (resin molded) by, for example, plastic materials such as polyethylene, polystyrene, polypropylene, etc., and its wall thickness is such that even if the bag-shaped housing part 103 is turned inside and pulled Even if it enters, it also maintains its cylindrical shape (for example, about 0.3 mm to 1.8 mm). the

In addition, there is no particular limitation on the external shape (diameter size, lengthwise size, etc.), but in this embodiment, as shown in FIG. 9 and FIG. The injection and discharge opening 102a located on the central axis gradually forms a funnel-shaped curved portion 102b with reduced diameter. Furthermore, it is preferable to form radial projections 102c on the inner surface of the bent portion 102b so as to extend toward the discharge port 102a. The radial protrusion 102c constitutes a flow guide during suction, so that the content can move toward the discharge port 102a efficiently, and the radial protrusion 102c can be integrally formed during molding. In this case, the specific extension length, interval, and height of the radial protrusions 102c can be appropriately modified according to the size of the cylindrical housing portion 102, the type (viscosity) of the stored object, and the like. the

Moreover, as shown in FIG. 10B, the curved portion 102b formed in the above-mentioned cylindrical housing portion may be transferred from the circumferential side wall to the injection and discharge port 102a on a gentle plane 102b', or the curved portion may not be formed as shown in FIG. 10C. As shown, the flat surface 102b" (approximately right-angled plane) is transferred from the side wall to the discharge port 102a. That is, when receiving the suction, the shape can be Appropriately deform, and then constitute a tapered curved surface that is sharper than the curved surface shown in FIG. 10A.

As shown in FIG. 10A , a welding portion 102 d is formed on the lower end side of the cylindrical housing portion 102 so as to facilitate welding of the opening end portion of the bag-shaped housing portion 103 . For example, this welded portion 102d has a predetermined length L2 (about 5 mm to 15 mm) in the longitudinal direction as shown in the figure. Furthermore, the cylindrical part of the cylindrical housing part 102 may be configured by a small-diameter peripheral surface. Thereby, after covering the opening area of the bag-shaped housing part 103 on this part, thermal welding is performed with a heating rod etc., and the bag-shaped housing part 103 can be easily welded to the cylindrical housing part 102 . the

The above-mentioned bag-shaped housing part 103 is constituted as a bag shape in which a flexible film-like film such as polyethylene or polypropylene (a film sheet with a thickness of about 0.05 mm to 0.15 mm) is welded around, and may be formed, for example, by overlapping A three-party seal bag with two films welded around it, or a two-party seal bag with one film folded and welded on the sides and bottom. Alternatively, it may also be configured as a tubular bag. the

Here, the structure of the bag-shaped storage portion will be described with reference to FIGS. 11 and 12 . the

The bag-shaped housing part of the present invention has a structure in which one end is open and the other end is not formed with a flat bottom so that it can be welded to the circular opening (welding part 102d) of the cylindrical housing part 102 (such a structure referred to as "non-freestanding structure") (deposited areas are indicated by dotted lines). In addition, the bag-shaped storage part of this embodiment has the structure which cut|disconnected the corner part of the end part side opposite to the welded part 102d. Specifically, the shape of the side is not the rectangle shown in FIG. 11, but, for example, as shown in FIG. A corner P of approximately 90 degrees or less is not formed between 103b. the

And, as shown in Figures 12B and 12C, there is no particular limitation on the shape of the gap between the bottom edge 103a and the lateral edge 103b inside the housing. Instead of shortening, as shown in FIG. 12C , the bottom edge 103 a may be lengthened. the

In this case, the shape of the missing portion, that is, the edge shape 103 d forming the missing portion is preferably formed to follow the shape of the curved portion 102 b formed in the cylindrical housing portion 102 . Specifically, the shape shown in FIG. 12B is preferably corresponding to the cylindrical housing portion in which the curved portion shown in FIG. 12A constitutes a relatively gentle surface, and the shape shown in FIG. 12B is preferably corresponding to the structure shown in FIG. 12A The curved portion 102b corresponds to a cylindrical housing portion that constitutes a longer surface along the longer longitudinal direction. In addition, the shape shown in FIG. 12C preferably corresponds to the cylindrical housing portion in which the curved portion shown in FIG. 12B constitutes a gentler surface. the

In addition, the length L1 (see FIG. 9B ) of the bag-shaped housing portion 103 is configured to be within a range of 90% to 110% of the housing length L in the longitudinal direction of the cylindrical housing portion 102 . Thus, when suction is received from the injection and discharge port 102a, the bag-shaped housing part 103 is turned over and drawn into the inner space of the cylindrical housing part 102 along with the outflow of the contents, and the inner surface of the bag-shaped housing part 103 is in contact with the inner surface of the cylindrical housing part 102. The inner surface of the cylinder housing part 102 is in close contact with it, but by setting the length within the above-mentioned range, the bottom edge 103a inside the housing can be positioned near the opening 102A on the side of the housing part of the pouring port 102a, thereby effectively and without Wastefully draining contents. the

That is, if the length L1 of the bag-shaped housing part 103 exceeds 110% with respect to the storage length L of the longitudinal direction of the cylindrical housing part 102, the bag-shaped housing part 103 will be turned over to the cylindrical housing part while the contents flow out. When the internal space of 102 is reversed and pulled in, the tendency to block the opening 102A on the storage part side of the pouring port 102a such as bending of the bottom edge 103a inside the storage becomes stronger, thus, the attraction force cannot function, and the light absorption cannot exist. There is a high possibility that the contents in the vicinity of the opening 102A on the storage portion side of the discharge port 102a will remain. On the other hand, if the length L1 of the bag-shaped housing part 103 is less than 90% relative to the storage length L of the longitudinal direction of the cylindrical housing part 102, the bag-shaped housing part 3 will be reversed along with the outflow of the contents and move toward the cylindrical housing part. When the internal space of 102 is reversed and pulled in, the distance between the bottom edge 103a of the storage interior and the opening 102A on the side of the storage part of the injection and discharge port 102a is far away, thus, when the internal pressure drops due to suction, the The contents in the region of the edge 103a do not have a sufficient suction force, so there is a high possibility of remaining in this state. the

Next, referring to FIG. 13A to FIG. 13F , it will be described that a storage body is formed by welding the bag-shaped storage portion 103 shown in FIG. 12A on the cylindrical storage portion 102 with the structure shown in FIG. 10A . (commercially available mayonnaise) and the results of draining the contents with a certain amount of attraction will be described. the

First, when the contents are stored in the cylindrical container 102 and the bag-shaped container 103 (refer to FIG. 13A ), when suction is applied to the discharge port 102a to discharge the contents, as described above, the bag The cylindrical housing part 103 gradually shrinks while producing vertical lines, and the bottom edge 103a rises toward the circular opening of the cylindrical housing part 102 (the region of the welded part 102d) (see FIG. 13B and FIG. 13C ). When it is further sucked, along with the outflow of the contents, the bottom edge 103a of the storage interior passes through the circular opening of the cylindrical storage part 102 (the area of the welded part 102d) and rises, and the bag-shaped storage part 103 moves toward the bottom of the cylindrical storage part 102. The inner space is turned over and pulled in (see Figure 13D and Figure 13E). Then, when further sucked, the inner surface of the bag-shaped housing part 103 is in close contact with the inner surface of the cylindrical housing part 102 (refer to FIG. 13F ), and the contents are collected in the housing-side opening area of the discharge port 102a. the

And, as shown in FIG. 13F , when the bag-shaped housing part 103 is turned over to the inner space of the cylindrical housing part 102 and pulled in, the inner surface of the bag-shaped housing part 103 is in close contact with the inner surface of the cylindrical housing part 102. , but the inner surface of the cylindrical housing part 102 is a curved surface without corners, so the bag-shaped housing part 103 becomes difficult to cling to in a wrinkled state, and the content can be sucked out (pressed out) as much as possible. In addition, when the inner surface of the bag-shaped housing part 103 is in close contact with the inner surface of the cylindrical housing part 102, the suction force does not act on the bag-shaped housing part 103, but gradually shrinks in a funnel shape toward the side of the injection and discharge port 102a. Due to the curved shape of the diameter, even if the suction force is reduced, the content can be discharged as much as possible. the

In this case, as described above, the radial projections 102c extending toward the discharge port 102a are formed on the inner surface of the curved portion 102b, so it is easy to ensure a flow path toward the discharge port 102a, and efficient storage can be achieved. things. the

Furthermore, since the bag-shaped housing part 103 is made of a film sheet, it tends to expand and contract locally, but by setting its length L1 at 90% to 110% of the housing length L relative to the longitudinal direction of the cylindrical housing part 102, as As shown in FIG. 13F , the region of the bottom edge 103a can be located near the discharge port, thereby enabling effective discharge of the contents even if the internal pressure drops due to suction. In particular, the bag-shaped housing portion 103 is configured as a non-independent body by cutting corners on the end side so that no corners forming acute angles exist at the bottom edge, and the edge shape of the notch is formed to follow the shape of the cylindrical housing portion 102. Therefore, the content can be effectively discharged without residue. the

Moreover, when the suction test is actually carried out under the same conditions for the bag-shaped housing portion of the structure shown in FIG. In the bag-shaped storage unit 103 of the structure shown, 5.70% of the content remains with respect to the original filling weight, and only 3.07% of the content remains in the structure shown in FIG. 12A (the structure with the corner cut off). , and can effectively drain the contents. the

Moreover, the above-mentioned container 101 is formed by forming a non-independent bag-shaped bag-shaped container 103 along the other end of the cylindrical container 102 with respect to the cylindrical container 102 formed by resin molding having the pouring port 102a. The circular opening on the side is welded. Therefore, the structure is simple and can be easily manufactured, and a structure such as cost reduction and easy reuse can be obtained. the

In the container 101 of this embodiment, the cross-sectional shape does not change along the longitudinal direction, but the shape may be changed as in the above-mentioned first embodiment. the

As mentioned above, although embodiment of this invention was described, this invention is not limited to said embodiment, Various deformation|transformation is possible. the

For example, the size of the cylindrical housing part 2 , the shape from the side surface to the discharge port 2 a , the structure of the discharge port 2 a in the cylindrical housing part 2 , and the like can be appropriately modified. In addition, when the notch is formed at the end of the bag-shaped housing portion 3, it may be cut out so that no acute-angled portion of 90° or less exists in the housing space. Therefore, the end portion may be cut off in a circular arc shape, or may be cut off in multiple stages by a plurality of branch lines instead of a circular arc shape. the

Although specific embodiments have been used to describe methods applicable to the present invention, it will be apparent to those skilled in the art that many changes and modifications can be made without departing from the spirit and scope of the invention. It is intended to cover in the appended claims all such modifications as fall within the scope of this invention. the

Claims (12)

1. A containment body, comprising: A cylindrical container formed by resin molding, which has a discharge port capable of attracting the contents in the central area of one end side, and has a circular opening in the other end side; The bag-shaped housing part is formed by a film sheet into a non-independent bag shape, and is welded along the circular opening of the cylindrical housing part. into the cylindrical housing during suction and can be closely attached to the inner surface of the cylindrical housing, in, From the other end side toward the one end side, the cross-sectional shape of the cylindrical housing portion changes from a circle to an ellipse. 2. The container according to claim 1, wherein, In the bag-shaped housing portion, a notch is formed at a corner portion on an end side opposite to an end portion welded to the cylindrical housing portion. 3. The container according to claim 2, wherein, The cylindrical housing portion has a curved portion that decreases in diameter toward the injection and discharge port, The shape of the edge of the notch formed in the bag-shaped receiving portion roughly corresponds to the shape of the bent portion. 4. The container according to claim 3, wherein, On the inner surface of the curved portion of the cylindrical housing portion, protrusions extending toward the discharge port and radially arranged are formed. 5. The container according to claim 1, wherein, The inner volumes of the cylindrical storage part and the bag-shaped storage part are substantially the same. 6. The container according to claim 1, wherein, The other end side having a circular opening in the cylindrical housing portion is formed to have the same diameter over a predetermined length, and the bag-shaped housing portion is welded to the outer periphery of the area of the cylindrical housing portion where the same diameter is formed. face. 7. The container according to claim 6, wherein, A pair of protrusions protruding outward at intervals of 180 degrees in the circumferential direction are formed on the outer peripheral surface of the cylindrical housing portion in a region where the bag-shaped housing portion is welded. 8. The container of claim 1, wherein: It also includes: a blockage prevention member that can be attached and detached relative to the injection and discharge port, The occlusion prevention member has a cylindrical portion having a notch groove that defines a flow path between the bag-shaped housing portion that enters the cylindrical housing portion and the suction from the discharge port. 9. The housing of claim 8, wherein: The cylindrical portion has an axial length substantially the same as that of the spout. 10. The housing of claim 8, wherein: The notched groove has the following function: when the inner surface of the bag-shaped container is in close contact with the inner surface of the cylindrical container during suction so that the suction force cannot act on the bag-shaped container, it is easy to pour and drain the residue in the bag through the notched groove. Storage near the bottom edge of the container. 11. The container of claim 1, wherein: The drain port has a threaded plug. 12. A container comprising: A cylindrical container formed by resin molding, which has a discharge port capable of attracting the contents in the central area of one end side, and has a circular opening in the other end side; A bag-shaped housing part, which is welded along the circular opening of the cylindrical housing part, and the bag-shaped housing part enters into the cylindrical housing part when being sucked through the injection and discharge port and can be closely attached to the On the inner surface of the tubular housing part, and the bag-shaped housing part is formed into a non-independent bag shape by a film sheet, in, The bag-shaped storage portion has a length within a range of 90% to 110% of a storage length in a longitudinal direction of the cylindrical storage portion.

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