JP2018203334A - Combinational body of outer container and liquid storage container - Google Patents

Abstract

To expand certainly a liquid storing container in an outer container.SOLUTION: A combinational body of an outer container and a liquid storage container comprises an outer container 5 which includes an opening part 5a provided at a position deviated from a first central part L1 that passes through the upper surface central part and a liquid storage container 1 which includes a discharge port 40 provided at a position deviated from a second central part L2 that is arranged in the outer container 5 and passes through the upper edge central part. Between the discharge port 40 and the opening part 5a, interposed is a flexible gasket 70 which can be pressed while maintaining a sealing condition. The discharge port 40 is fixed in the opening part 5a through engaging an outer screw 41A of the discharge port 40 with the inner screw 5A of the opening part 5a. The width direction of the liquid storage container 1 is in parallel with the straight line L1 which connects the first central part L1 of the outer container 5 to the opening part 5a, and the deviation direction from the first central part L1 of the opening part 5a and the deviation direction from the second central part L2 of the discharge port 40 are oriented to the same direction.SELECTED DRAWING: Figure 3

Description

  Embodiments of the present disclosure relate to a combination of an outer container and a liquid storage container, and are housed in an outer container that is used for storage and transportation of fluid contents, particularly in the fields of industrial chemicals, pharmaceuticals, and cosmetics. The present invention relates to a combination of an exterior container and a liquid storage container.

  Conventionally, in industrial chemicals, pharmaceuticals and cosmetics raw materials, etc., liquid storage containers that are placed inside exterior containers made of aluminum, steel, stainless steel, fiberboard, etc. for storage and transportation and contain fluid contents It is used.

  Such a liquid storage container can be reused by simply removing a used liquid storage container from the outer container and setting a new liquid storage container in the outer container. Compared to filling fluid contents in steel or other external containers directly, it has the advantage of eliminating the hassle of washing, etc., and is widely used as a container for industrial chemicals, pharmaceuticals and cosmetic raw materials .

  Moreover, what has a bag main body and the spout attached to the bag main body is known as a liquid storage container. The spout has a spout attachment part heat-sealed to the bag body, and a spout body protruding from the spout attachment part to the outside of the bag body. Such a liquid storage container is first folded compactly and inserted into the exterior container from the opening of the exterior container. Thereafter, nitrogen gas is supplied into the liquid storage container to inflate the liquid storage container inside the outer container. Next, the liquid container is filled with the content liquid.

JP 2008-7154 A

  By the way, the spout of the liquid storage container is attached to the opening of the outer container.

For this reason, when the opening of the outer container is provided at a position deviated from the center of the upper surface of the outer container, the outlet of the liquid container as described above is also aligned with the opening of the outer container. It is necessary to provide at a position shifted from the center of the edge. However, in such a case, when the liquid storage container is inserted into the outer container, the liquid is stored in the outer container depending on the positional relationship between the bag body in the outer container and the spout attached to the opening of the outer container. The container may not swell sufficiently. Thus, if the liquid storage container does not sufficiently swell in the outer container, the liquid content cannot be reliably filled in the liquid storage container.
For example, the width direction of the bag body 3 of the liquid storage container 1 is not parallel to the straight line L3 connecting the first center portion L1 of the outer container 5 and the opening 5a, and the width direction of the bag body 3 is the straight line L3. When the predetermined angle α is formed, since the width direction of the bag body 3 does not coincide with the diameter direction of the outer container 5, there is less room for the bag body 3 to swell in the outer container 5, and the liquid storage container in the outer container 5. When the bag main body 3 is inflated, the bag main body 3 comes into contact with the inner wall of the outer container 5, a part of the bag main body 3 is closed, the bag main body 3 is twisted, and the like. Does not swell sufficiently (see FIG. 4B).

  The embodiment of the present disclosure has been made in consideration of such points, and the liquid storage container can be sufficiently and surely inflated in an exterior container having an opening provided at a position shifted from the center. An object of the present invention is to provide a combination of an outer container and a liquid container.

  An assembly of an exterior container and a liquid storage container according to an embodiment of the present disclosure has a first center portion that passes through the center portion of the upper surface, and an opening container that is provided at a position shifted from the first center portion. And a liquid storage container disposed in the exterior container, the liquid storage container having a second central portion passing through the central portion of the upper edge, and the second central portion and one of the bag main bodies. And a spout attached to the opening of the outer container, and the bag body is inserted into the outer container through the opening. The spout has an inflatable structure, and the spout is fixed to the opening by a fixing means. The fixing means has an inner screw and an outer screw that engages with the inner screw. A gasket is interposed between the inner screw and The gasket is pressed by screwing an external screw, and the width direction of the bag body is parallel to a straight line connecting the first central portion and the opening portion of the outer container before the bag body is inflated. And the said spout is fixed to a rotation direction so that the deviation | shift direction from the said 1st center part of the said opening part and the deviation | shift direction from the said 2nd center part of the said spout may face the same direction. Yes.

  An assembly of an exterior container and a liquid storage container according to an embodiment of the present disclosure has a first center portion that passes through the center portion of the upper surface, and an opening container that is provided at a position shifted from the first center portion. And a liquid storage container disposed in the exterior container, the liquid storage container having a film superimposed so as to oppose, and a bag body having a second central portion passing through the upper edge central portion, The bag body includes an attachment portion that is attached between the second center portion and one side of the bag body, and includes a spout attached to the opening portion of the outer container. The mounting portion of the spout is provided between the films stacked so as to face each other, and the spout is fixed to the opening. By The fixing means has an inner screw and an outer screw engaging with the inner screw, and a gasket is interposed between the spout and the opening, and the inner screw and the outer screw are screwed in. By pressing the gasket, a straight line connecting the two regions surrounded by the ends of the mounting portion and the films overlapped so as to face each other in a state before the bag main body is inflated is the surface of the outer container. The direction of displacement of the opening from the first center and the direction of displacement of the spout from the second center are in the same direction, parallel to a straight line connecting the first center and the opening. Thus, the spout is fixed in the rotation direction, and is an assembly of an outer container and a liquid storage container.

  In the assembly of the outer container and the liquid storage container according to an embodiment of the present disclosure, it is preferable that the gasket includes ethylene propylene rubber.

  In the assembly of the exterior container and the liquid storage container according to an embodiment of the present disclosure, it is preferable that a lubricant is provided on the surface of the flexible gasket.

  A liquid storage container according to an embodiment of the present disclosure is attached between a bag body having a second center portion passing through an upper edge center portion, and the second center portion and one side of the bag body. And a spout attached to the opening of the outer container, and an ethylene propylene rubber gasket is provided at the spout.

  An exterior container according to an embodiment of the present disclosure is an exterior container having a first central portion that passes through a central portion on the upper surface and an opening provided at a position shifted from the first central portion, An ethylene propylene rubber gasket is provided in the opening.

  As described above, according to the present disclosure, a liquid storage container having a spout provided at a position deviated from the second central part in an outer container having an opening provided at a position deviated from the first central part. The liquid storage container can be inflated sufficiently and reliably by arranging at a desired position.

FIG. 1 is a side view showing a liquid storage container according to the first embodiment. 2A and 2B are views showing a state in which the liquid storage container is inserted into the outer container. FIG. 3 is a side sectional view showing the spout attached to the bag body. FIG. 4A is a diagram illustrating the operation of the first embodiment, and FIG. 4B and FIG. 4C are diagrams illustrating the operation of the comparative example. FIG. 5 is a perspective view showing a spout. FIG. 6 is a view showing a state in which a flexible gasket is previously attached to the spout side. FIG. 7 is a view showing a state in which a flexible gasket is attached in advance to the opening side of the outer container. 8A and 8B are views showing the positional relationship of the spout with respect to the bag body. FIG. 9 is a cross-sectional view showing the layer structure of the bag body of the liquid storage container. FIG. 10 is a diagram illustrating an outer container and a liquid storage container that is disposed in the outer container and folded. FIG. 11 is a view showing a state in which the bag body of the liquid storage container is folded in a belly shape through a vertical folding line. FIG. 12 is a view showing a state in which the bag body of the liquid storage container is folded through a horizontal folding line.

  Hereinafter, the present embodiment for carrying out the present invention will be described with reference to the drawings. Here, FIG. 1 to FIG. 12 are diagrams showing an embodiment of the present invention.

  Here, FIG. 1 is a side view showing the liquid container according to the present embodiment, FIGS. 2A and 2B are views showing a combination of the outer container and the liquid container, and FIG. 3 is the outer container and the liquid. It is a sectional side view which shows the assembly body of a storage container, and Fig.4 (a) (b) (c) is a figure which shows the effect | action of this embodiment.

  The combination of the outer container and the liquid storage container according to the present embodiment is made of steel having a steel or resin opening 5a provided at a position shifted (disengaged) from the first central portion L1 passing through the central portion of the upper surface. The outer container 5 and the liquid storage container 1 disposed in the outer container 5 are provided.

  Further, the outer container 5 is provided with an opening 5D other than the opening 5a above the outer container 5 (see FIGS. 2A and 2B).

  Among these, the liquid container 1 includes a rectangular bag body 3 and a spout 40 provided at a position shifted (disengaged) from the second center portion L2 passing through the center portion of the upper edge 3a of the bag body 3. The spout 40 is mounted in the opening 5 a of the outer container 5.

  Next, the liquid storage container 1 will be further described.

  The liquid storage container 1 includes a multi-layer film 2 in which an outer bag 20 and an inner bag 21 are overlapped so that the inner bags 21 face each other to form a total of four sheets. 10 is formed, and the spout 40 is disposed on the upper edge 3a of the bag body 3 and heat-sealed between the inner bags 21 in advance.

  In this embodiment, the bag body 3 is obtained by laminating the multiple films 2 so that the inner bags 21 face each other, and heat-sealing the four sides to form the heat-seal portion 10, but this is not limitative. For example, after the multiple film 2 is folded so that the inner bags 21 face each other, the three outer peripheral sides that overlap each other may be heat-sealed. Moreover, you may form each inner edge part of the heat seal part 10 so that the inner edge may become arc shape. As a result, a structure in which the fluid content hardly remains at the corners is obtained. Moreover, the bag body does not necessarily need to be composed of multiple films, and the film structure of the bag body 3 can be appropriately selected according to the contents and quantity.

  Note that, as described above, the bag body 3 is obtained by stacking the two multiple films 2 and heat-sealing the periphery to form the heat seal portion 10. In this case, the bag body 3 has a rectangular shape having an upper edge 3a, a bottom edge 3b, and two side edges 3c, 3c. The upper edge 3a includes two upper edge heat seal portions 10a, the bottom edge 3b includes one bottom edge heat seal portion 10b, and each side edge 3c, 3c includes one side edge heat seal portion 10c. The upper edge heat seal portion 10a, the bottom edge heat seal portion 10b, and the side edge heat seal portion 10c constitute the heat seal portion 10.

  Moreover, the upper edge 3a of the bag body 3 includes the two upper edge heat seal portions 10a as described above. In this way, by dividing the heat seal portion 10a of the upper edge 3a into two, for example, compared to a case where one heat seal portion having a width of two heat seal portions 10a is formed on the upper edge 3a, The upper edge 3a can be configured to be relatively soft. In addition, the upper edge heat seal portion 10a is not limited to two, and the effect of the present embodiment can be obtained, so that it may be one, or may be three or more.

  In carrying out the technique of the present embodiment, the multiple film 2 is not limited to a two-layer structure in which the outer bag 20 and the inner bag 21 are overlapped, and one or more inner bags 22 are formed. Further, it may have a three-layer structure, or may have a single-layer structure including only the outer bag 20 or the inner bag 21.

  The spout 40 includes a spout attachment part 50 that is heat-sealed to the upper edge 3a of the bag body 3 and a spout body 41 that is connected to the spout attachment part 50 and protrudes outward from the bag body 3. A spout flange 42 is provided at the upper end of the spout main body 41. Further, as shown in FIG. 1, the spout 40 is heat-sealed between the inner bags 21 of the multiplex film 2 at the spout attachment portion 50.

  As shown in FIG. 5, the spout attachment portion 50 of the spout 40 is formed of an elliptic cylinder having a central portion 51 and thin portions 52 that are provided on both sides of the central portion 51 and are thinner than the thickness of the central portion 51. It is flat and has a through hole 45 in the central portion 51. Usually, when the spout 40 is heat-sealed between the inner bags 21 of the multiplex film 2 at the spout mounting portion 50, there is a gap between two regions surrounded by the inner bag 21 and the end of the spout mounting portion 50. It is easy to become poorly sealed. In order to prevent this, thin portions 52 are provided on both sides, and a gap is prevented by melting the thin portions 52 during heat fusion. A cutout 55 is formed at the lower end of the thin portion 52, and a step 55 a is formed in the cutout 55.

  Further, the spout main body 41 of the spout 40 is formed of a cylindrical body having a substantially U-shaped cross section, and a spout flange 42 is provided at the upper peripheral edge. An opening 44 is formed in the bottom 43 of the spout main body 41. After the spout 40 is attached to the outer container 5, the opening 44 can ensure ventilation of the outside of the outer container 5 and the space between the liquid storage container 1 and the outer container 5. When pumping out the liquid, gas is sealed between the liquid storage container 1 and the outer container 5 through the opening 44, and pressure is applied from the outside of the liquid storage container 1 to transfer the content liquid inside the liquid storage container 1. The pumping can be performed smoothly.

  Incidentally, an outer thread 41A is provided on the outer surface of the spout body 41 of the spout 40, and the outer surface of the spout body 41 just below the spout flange 42 extends in the circumferential direction between the spout flange 42 and the outer thread. A circumferential groove 41B is provided, and a ring-shaped gasket 70 is fitted into the circumferential groove 41B.

Here, the method of fitting the gasket 70 into the circumferential groove 41B may be any of the following.
(1) If the gasket is to be fitted after the spout 40 is heat-sealed to the upper edge 3a of the bag body 3 by the spout attachment portion 50, the spout body 41 side projecting outward from the bag body 3 Fit from.
(2) If the gasket is to be fitted before the spout 40 is heat-sealed to the upper edge 3a of the bag body 3 by the spout mounting portion 50, either the spout main body 41 side or the spout mounting portion 50 side It can be inserted from either side.

  The gasket 70 of the present embodiment is made of an ethylene-propylene rubber gasket (hereinafter referred to as “EPR gasket”), and a fluorine-based release agent is applied as a lubricant on the surface thereof. This gasket 70 is excellent in elasticity, and a fluorine-based release agent is applied to the surface. For this reason, when the outer screw 41A of the spout 40 is screwed into the inner screw 5A of the opening 5a as described later, the gasket 70 is smoothly moved between the spout flange 42 of the spout 40 and the outer screw 41A of the spout 40. And it can press reliably. In this case, since the gasket 70 is made of an EPR gasket, the spout 40 can be rotated at least 360 ° with respect to the opening 5a while maintaining the sealing performance between the opening 5a and the spout 40. Become. That is, the spout 40 is attached to the opening 5a, and after the gasket 70 starts to be pressed between the opening 5a and the spout 40, the space between the opening 5a and the spout 40 is sealed. The spout 40 can be rotated at least 360 °.

  In general, since the spout 40 of the liquid storage container 1 is screwed into the opening 5a, the width of the bag body 3 of the liquid storage container 1 and the diameter direction of the outer container 5 are the same. On the other hand, it is difficult to attach the spout 40.

  For this reason, the positional relationship of the spout 40 attached to the opening 5a of the outer container 5 is adjusted so that the width direction of the bag body 3 of the liquid storage container 1 and the diameter direction of the outer container 5 are the same direction. In that case, it is necessary to turn the spout 40 in the tightening direction. This is because if it is adjusted by turning in the loosening direction, the sealing property is lost and the liquid in the bag body leaks.

  Therefore, the material of the gasket is required to reduce the resistance in the direction in which the spout 40 is turned (that is, the resistance between the gasket and the opening 5a). Examples thereof include butyl rubber, nitrile rubber, ethylene propylene rubber, and low density polyethylene.

  However, depending on the positional relationship of the spout 40 attached to the opening 5a of the outer container 5, the spout 40 may be tightened by about 10 ° (see FIG. 8A). There are also cases where it is necessary to turn 350 ° in the tightening direction and close to 360 ° (see FIG. 8B). Therefore, the material of the gasket is preferably ethylene propylene rubber that can absorb the resistance in the screwing direction with respect to the screwing of the external screw 41A of the spout 40 by one thickness.

  Therefore, since the gasket 70 is made of an EPR gasket, the spout 40 can be rotated at least 360 ° with respect to the opening 5a while maintaining the sealing property between the opening 5a and the spout 40. .

  As shown in FIG. 6, the gasket 70 is fitted in the circumferential groove 41B of the spout main body 41 of the spout 40, and the gasket 70 is attached to the spout 40 side in advance, but is shown in FIG. Thus, the gasket 70 may be provided in advance on the opening 5a side.

  Moreover, although the example which used the fluorine-type mold release agent was shown as a lubricant apply | coated to the gasket 70, not only this but aromatic polyetherketone, diamond-like carbon, silicone, Teflon (trademark), etc. are used as a lubricant. May be.

  As described above, the spout 40 can be securely fixed in the opening 5a by screwing the outer screw 41A of the spout 40 into the inner screw 5A of the opening 5a. In this case, the spout flange 42 of the spout 40 is attached to the opening 5 a formed in the outer container 5, and the liquid storage container 1 is supported in the outer container 5.

  A fixing means is constituted by the outer screw 41A of the spout 40 and the inner screw 5A of the opening 5a. An outer screw 5b for fitting a cap (not shown) is provided on the outer surface of the opening 5a.

  The spout 40 is preferably manufactured by an injection molding method. The resin used for this is not particularly limited as long as it is a resin that can be injection-molded. However, since the resin constituting the inner surface of the inner bag 21 of the multiplex film 2 is bonded by thermal fusion, Although it is necessary to select appropriately depending on the resin constituting the inner surface, high-density polyethylene that is rigid at high temperatures and hardly brittle at low temperatures is preferable.

  Next, the multiple film 2 constituting the bag body 3 will be described. In the present embodiment, the multiple film 2 is composed of a film constituting the outer bag 20 and a film constituting the inner bag 21.

  As shown in FIG. 9, as the outer bag 20 of the bag body 3, a laminate of unstretched nylon (thickness 15 μm) 20a / linear low density polyethylene (thickness 40 μm) 20b can be used. As this, linear low density polyethylene (thickness 80 μm) can be used.

  In this case, since the outer bag 20 includes the unstretched nylon 20a, the degree of elongation of the outer bag 20 can be increased. For example, the outer bag 20 has a degree of elongation of 300% to 500%. Thus, since the outer bag 20 can have a high degree of elongation, the bag body 3 can be made soft as a whole, and the bag body 3 is inserted into the outer container 5 as will be described later. When the bag body 3 is inflated in the outer container by supplying nitrogen gas or clean dry air into the inside, the bag body 3 can be smoothly inflated.

  In addition, as a material of the bag main body 3, it is not restricted to what was mentioned above.

  For example, as the material of the inner bag 21, materials such as low density polyethylene, low density polyethylene and linear low density polyethylene can be used.

  As the material of the outer bag 20, a material having an elongation of 300% to 500%, such as low density polyethylene and linear low density polyethylene can be used.

  Next, how the liquid storage container 1 is stored in the outer container 5 will be described. First, the bag body 3 of the liquid storage container 1 is folded in a belly shape along a plurality of longitudinal folding lines 11 (FIG. 11). In this way, the bag body 3 folded in an abdomen shape is folded through a lateral folding line 15 to form a folded portion 16 (FIG. 12).

  In this way, as shown in FIG. 10, the liquid storage container 1 in which the folded portion 16 is formed after the bag body 3 is folded in a belly shape is prepared. It should be noted that either the step of folding the bellows or the step of forming the folding portion 16 may be performed first, and FIGS. 10 and 11 show the mode of performing the step of folding the bellows first. Is illustrated. Here, for the sake of convenience, the folding portion 16 is omitted in FIG. 11, and the belly-shaped folding lines (the plurality of vertical folding lines 11) are omitted in FIG.

  Next, as shown in FIGS. 2A and 2B, the liquid storage container 1 is folded and formed in an elongated shape in the vertical direction, and the liquid storage container 1 is inserted into the exterior container 5 from the opening 5a. . In this case, the above-described ring-shaped gasket 70 is fitted into the circumferential groove 41B of the spout 40 in advance.

  Next, the spout 40 of the liquid storage container 1 is attached to the opening 5 a of the outer container 5. In this case, the spout 40 is first rotated with respect to the opening 5a. In this way, the outer screw 41A of the spout 40 is screwed into the inner screw 5A of the opening 5a, and the outer screw 41A of the spout 40 is engaged with the inner screw 5A of the opening 5a. Next, the gasket 70 is pressed between the spout flange 42 of the spout 40 and the internal thread 5A of the opening 5a, and the space between the spout 40 and the opening 5a is sealed via the gasket 70.

  In the present embodiment, after the gasket 70 starts to be pressed between the spout flange 42 and the inner screw 5A of the opening 5a, the outer screw 41A of the spout 40 is further screwed. Thereby, the spout 40 can be fixed at a desired rotational direction position with respect to the outer container 5.

  As described above, after starting the pressing of the gasket 70 between the opening 5a and the spout 40, the spout 40 is further rotated with respect to the opening 5a at least 360 ° while maintaining the sealed state. Therefore, the spout 40 can be securely fixed to the outer container 5 at a desired rotational position in a sealed state.

  In this way, the spout 40 can be firmly fixed to the opening 5a.

  Next, the behavior of the liquid container 1 when the spout 40 is fixed to the outer container 5 in a desired rotation direction will be described. In this case, as shown in FIG. 4A, the spout 40 of the liquid storage container 1 is attached to the opening 5 a of the outer container 5, and the bag body 3 of the liquid storage container 1 is loosened inside the outer container 5. When spread in a flat shape, the width direction of the bag body 3 of the liquid storage container 1 is parallel to the straight line L3 connecting the first central portion L1 of the outer container 5 and the opening 5a, and the opening of the outer container 5 The displacement direction of 5a from the first center portion L1 (left direction in FIG. 4A) is the displacement direction of the spout 40 of the liquid storage container 1 from the second center portion L2 (left direction in FIG. 4A). ) In the same direction.

  Here, the straight line L3 connecting the first central portion L1 of the outer container 5 and the opening 5a indicates a perpendicular when a perpendicular is drawn from the opening 5a to the first central portion L1. At this time, since the opening 5a has a size, the perpendicular does not necessarily pass through the center when viewed from above the opening 5a, and the perpendicular passes through the edge when viewed from above the opening 5a. Including the case of passing between the center when viewed from above the opening 5a and the edge when viewed from above the opening 5a. Further, in the present embodiment, “parallel” means that the two lines are curved in a range in which the effect of the present invention can be obtained in addition to a state in which the two lines are strictly straight in a geometric sense. In addition to the state in which the two lines are straight lines and the state in which the two lines do not exactly intersect, the state in which the two lines form an angle within a range in which the effect of the present invention can be obtained is included. In the state where the two lines form an angle, the angle is 20 degrees or less. The angle is preferably 10 degrees or less, and more preferably the angle is 5 degrees or less. In the present embodiment, the “same direction” means a state in which the two directions form an angle within a range in which the effects of the present invention can be obtained, in addition to a state in which the two directions are exactly the same. The angle formed by the two directions is 20 degrees or less, preferably the angle is 10 degrees or less, and more preferably the angle is 5 degrees or less. The predetermined angle α, which will be described later, indicates an angle that is not the same direction in the present invention, and is an angle larger than 20 degrees according to the definition of the same direction.

  Next, an expansion jig (not shown) is attached to the spout 40 of the liquid storage container 1, and nitrogen gas or clean dry air is supplied into the liquid storage container 1 using the expansion jig, and the outer container 5. Inside, the bag body 3 of the liquid container 1 swells.

  Next, the effect | action which expands the liquid storage container 1 in the exterior container 5 is explained in full detail below.

  When the liquid storage container 1 is inserted into the outer container 5, first, a portion of the bag body 3 of the liquid storage container 1 below the folding portion 16 falls due to its own weight, and then the bellows via the vertical folding curve 11. The bag body 3 folded in a shape is subjected to a force to return to a flat shape, and the bag body 3 gently expands into a flat shape.

  Next, as described above, the bag body 3 is inflated by supplying nitrogen gas or clean dry air into the liquid storage container 1 using an inflating jig. At this time, the bag body 3 that gently spreads in a flat shape swells three-dimensionally in a direction perpendicular to its surface.

  In addition, since the upper edge 3a of the bag body 3 includes the two upper edge heat seal portions 10a, the upper edge 3a can be configured to be softer than the case of including a wide heat seal portion, and the bag body 3 can be made more flexible. It can be smoothly expanded in the outer container 5. Furthermore, since the outer bag 20 of the bag body 3 has an elongation of 300% to 500%, the flexibility of the bag body 3 can be enhanced and the expansion action of the bag body 3 can be easily performed.

  In addition, when the spout 40 of the liquid storage container 1 is attached to the opening 5a of the outer container 5, the bag body 3 of the liquid storage container 1 is gently flattened inside the outer container 5 as described above. To spread. At this time, according to the present embodiment, the width direction of the bag body 3 is parallel to the straight line L3 connecting the first central portion L1 of the outer container 5 and the opening 5a, so that the opening 5a of the outer container 5 is formed. The direction deviating from the first central portion L1 and the direction in which the spout 40 is deviating from the second central portion L2 of the bag body 3 face the same direction. For this reason, even if the opening 5a is displaced from the first center portion L1 of the outer container 5 and the spout 40 is displaced from the second center portion L2 of the bag body 3, nitrogen is contained in the bag body 3 of the liquid storage container 1. By supplying gas or clean dry air, the bag body 3 of the liquid storage container 1 can be reliably inflated in the outer container 5 (see FIG. 4A). That is, since the width direction of the bag body 3 of the liquid storage container 1 is parallel to the straight line L3 connecting the first center portion L1 of the outer container 5 and the opening 5a, the width direction of the bag body 3 of the liquid storage container 1 is The outer container 5 faces in the same direction as the diameter direction. When the bag body 3 is inflated in the outer container 5, the bag body 3 swells in a direction perpendicular to its surface, so that the width direction of the bag body 3 of the liquid storage container 1 is the same as the diameter direction of the outer container 5. , The bag body 3 of the liquid storage container 1 has the largest room for swelling in the exterior container 5. Furthermore, in this case, when the bag body 3 of the liquid storage container 1 is inflated, the bag body 3 is prevented from being caught on the inner wall of the outer container 5, bent at the inner wall, and part of the bag body 3 being blocked. It is possible to inflate the bag body 3 accurately and reliably in the outer container 5 without clogging or twisting, and to secure a sufficient internal volume.

  On the other hand, as shown as a comparative example, the width direction of the bag main body 3 of the liquid storage container 1 is not parallel to the straight line L3 connecting the first center portion L1 of the outer container 5 and the opening 5a. When the width direction forms a predetermined angle α with the straight line L3, the width direction of the bag body 3 does not coincide with the diameter direction of the outer container 5, so that the room for the bag body 3 to swell in the outer container 5 is reduced. When the bag body 3 of the liquid storage container 1 is inflated in 5, the bag body 3 comes into contact with the inner wall of the outer container 5, a part of the bag body 3 is closed, the bag body 3 is twisted, etc. Occurs, and the bag body 3 does not swell sufficiently (see FIG. 4B). Further, as shown as a comparative example, the spout 40 of the bag body 3 of the liquid storage container 1 is attached to the second center portion L2 of the bag body 3, and the opening 5a is the first center portion L1 of the outer container 5. When it deviates from, the position of the 1st center part L1 of the exterior container 5 and the 2nd center part L2 of the bag main body 3 will shift | deviate. For this reason, similar problems occur, and the bag body 3 does not swell sufficiently (see FIG. 4C).

  In the present embodiment, the “predetermined angle α” is described as an angle formed by the width direction of the bag body 3 and the straight line L3. Instead of this, an angle formed between a straight line connecting the second center portion L2 of the bag body 3 and the spout 40 and the straight line L3 may be used, or between the inner bag 21 and the spout mounting portion 50. It is good also as an angle formed between the straight line which connects two area | regions surrounded by the edge part, and the straight line L3.

  In this way, an assembly of the outer container and the liquid storage container is produced. Thereafter, the inflating jig is removed from the spout 40, and a content liquid filling machine (not shown) is attached to the spout 40, and the content liquid is filled into the liquid storage container 1 from the content liquid filling machine.

  After the content liquid is filled into the liquid storage container 1, as shown in FIG. 3, the liquid distribution nozzle 60 is held in the spout body 41 of the spout 40 attached to the opening 5 a of the outer container 5. An outlet upper member 75 is mounted, and the liquid distribution nozzle 60 is inserted into the outlet upper member 75. The spout upper member 75 may be formed integrally with the spout 40.

The liquid distribution nozzle 60 inserted into the spout upper member 75 passes through the through hole 45 of the spout 40 and extends into the bag body 3 of the liquid storage container 1. The liquid distribution nozzle 60 has a large diameter portion 63 formed at the upper end thereof.
The liquid distribution nozzle 60 inserted into the spout upper member 75 is held by the spout upper member 75 with the large-diameter portion 63 provided at the upper end engaging the spout upper member 75.

  In this manner, after the content liquid filling process into the liquid storage container 1 is completed, a cap (not shown) is attached to the opening 5 a of the outer container 5. At this time, between the cap and the spout upper member 75, a sealing member called a break seal (a thick film pierced by the tip of the dispenser when penetrating a dispenser (not shown) to be described later and penetrating without generating dust) ) Intervenes. For this reason, the spout 40 and the liquid distribution nozzle 60 are sealed by this break seal and cap. In this way, the spout 40 and the large diameter portion 63 of the liquid distribution nozzle 60 are sealed. In this case, the cap engages with an external screw 5b provided on the outer periphery of the opening 5a. The cap includes a cap body and an upper cap, and the upper cap can be detached from the cap body.

  When the content liquid in the liquid storage container 1 is discharged to the outside, the upper cap is removed from the cap body, and the large diameter portion 63 of the liquid distribution nozzle 60 is connected to the dispenser via the break seal and the cap body.

  Here, the dispenser has a liquid flow path for discharging the liquid from the liquid storage container 1 at the center, and separately, a gas such as nitrogen gas is passed between the liquid storage container 1 and the outer container 5. It has a gas flow path for sending in between.

  Next, specific examples of the present invention will be described. In this example, a 200 L steel drum was used as the outer container 5.

<Example 1>
The following four types of resin gaskets 70 were combined with the steel opening 5a, and the tightening torque and rotation angle when the spout 40 was fixed to the opening 5a of the outer container 5 were evaluated.

  (I) When a butyl gasket was used, it rotated 90 degrees when the tightening torque was increased from 10 Nm to 20 Nm.

  (Ii) When a nitrile rubber gasket (acrylonitrile / butadiene copolymer) was used, it rotated 70 degrees when the tightening torque was increased from 10 Nm to 20 Nm.

  (Iii) When an ethylene propylene rubber gasket (copolymer of ethylene, propylene and methylene) was used, it rotated 250 degrees when the tightening torque was increased from 10 Nm to 20 Nm.

  (Iv) When seamless poly (low density polyethylene) was used, it rotated 35 degrees when the tightening torque was increased from 10 Nm to 20 Nm.

  From the above, it was found that the ethylene propylene rubber (EPR) gasket (iii) can be further rotated while maintaining a sealed state.

<Example 2>
When the EPR gasket 70 was provided in the steel opening 5a, it was evaluated whether there was an influence of the rotation angle due to the temperature of the fixing means for the opening 5a and the spout 40.

  When the fixing means was 30 degrees, it rotated 330 degrees when the tightening torque was increased from 5 Nm to 20 Nm.

  When the fixing means was 60 degrees, it rotated 337 degrees when the tightening torque was increased from 5 Nm to 20 Nm.

  From the above, it was found that the higher the temperature, the larger the rotation while maintaining the sealed state.

<Example 3>
Tightening torque and rotation when EPR gasket 70 is attached between either steel opening 5a or resin opening 5a (high density polyethylene) and resin outlet 40 (high density polyethylene) The angle was evaluated. The reference torque is 0 degree when the tightening torque is 0 Nm.

  When the steel opening 5a was used, the spout 40 rotated at 145 degrees at 5 Nm, 220 degrees at 10 Nm, 290 degrees at 15 Nm, 420 degrees at 20 Nm, and 475 degrees at 25 Nm.

  In the case where the resin opening 5a was used, the spout 40 was rotated at 140 ° at 5Nm, 225 ° at 10Nm, 365 ° at 15Nm, 500 ° at 20Nm, and 600 ° at 25Nm.

<Example 4>
A fluorine release agent was applied to the EPR gasket 70 as a lubricant, and the tightening torque and rotation angle when the EPR gasket 70 was provided between the opening 5a and the resin spout 40 were evaluated.

  When a resin-made spout 40 is provided and a fluorine-based mold release agent is applied to the EPR gasket 70 as a lubricant, it is rotated 450 degrees at 5 Nm, rotated 670 degrees at 10 Nm, rotated 840 degrees at 15 Nm, and 1050 degrees at 20 Nm I was able to rotate it. Moreover, the fixing means of the opening 5a and the spout 40 was deformed at 25 Nm.

<Example 5>
As an evaluation of the sealing property of the outer container 5 when a fluorine-based mold release agent is applied to the EPR gasket 70 as a lubricant and the EPR gasket 70 is provided between the opening 5a and the resin spout 40, the transport of dangerous goods A UN test equivalent to 1A1 that satisfies the container requirements was conducted. The exterior container 5 and the resin spout 40 are fixed with a tightening torque of 10 Nm to 20 Nm.

  When the outer container 5 was continuously filled with water and a water pressure of 300 kPa was applied to the outer container 5, no water leakage was confirmed.

  With the outer container 5 filled with water and hermetically sealed, the outer container 5 was tilted and dropped diagonally from a height of 2.6 m, and no water leakage was confirmed.

  With the outer container 5 filled with water and sealed, when the outer container 5 was placed sideways and dropped diagonally from a height of 2.6 m, no water leakage was confirmed.

<Example 6>
The opening 5a of the outer container 5 and the spout 40 of the liquid storage container 1 are fixed, the direction of the straight line L3 connecting the first central part L1 of the outer container 5 and the opening 5a, and the second center of the bag body 3 The filling capacity in the liquid container 1 was evaluated when the angle between the portion L2 and the linear direction connecting the spout 40 was 0 degrees, 30 degrees, and 60 degrees.

  The filling capacity when the relative angle was 0 degree was 201.2L.

  The filling capacity when the relative angle was 30 degrees was 189.6 L.

  The filling capacity when the relative angle was 60 degrees was 186.4L.

DESCRIPTION OF SYMBOLS 1 Liquid storage container 3 Bag main body 3a Upper edge 3b Bottom edge 3c Side edge 5 Exterior container 5a Opening part 5A Inner screw 5D Opening part 10 Heat seal part 20 Outer bag 21 Inner bag 40 Outlet 41 Outlet body 41A Outer screw 41B Circle Circumferential groove 42 Outlet flange 43 Bottom 44 Opening 45 Through hole 50 Outlet attachment portion 51 Central portion 52 Thin portion 60 Liquid distribution nozzle 70 Gasket 75 Outlet upper member L1 First central portion L2 Second central portion L3 Straight line

Claims (6)

An outer container having a first central portion passing through the upper central portion and having an opening provided at a position shifted from the first central portion;
A liquid storage container disposed in the outer container,
The liquid storage container has a bag body having a second center portion passing through the center portion of the upper edge;
The bag body includes an attachment portion that is attached between the second center portion and one side of the bag body, and includes a spout attached to the opening portion of the outer container. It has a structure that is inserted into the outer container through the part and inflated,
The spout is fixed to the opening by a fixing means, and the fixing means has an inner screw and an outer screw that engages with the inner screw, and a gasket is interposed between the spout and the opening. The gasket is pressed by screwing the inner screw and the outer screw, and the width direction of the bag body is in the state before the bag body is inflated. The spout is in the rotational direction so that the direction of deviation of the opening from the first center and the direction of deviation of the spout from the second center are in the same direction. A combination of an outer container and a liquid container characterized by being fixed. An outer container having a first central portion passing through the upper central portion and having an opening provided at a position shifted from the first central portion;
A liquid storage container disposed in the outer container,
The liquid storage container has a film superimposed so as to face the bag body, and a bag body having a second central portion passing through the central portion of the upper edge;
The bag body includes an attachment portion that is attached between the second center portion and one side of the bag body, and includes a spout attached to the opening portion of the outer container. It has a structure that is inserted into the outer container through a portion and inflated, and the attachment portion of the spout is provided between the films that are overlapped to face each other,
The spout is fixed to the opening by a fixing means, and the fixing means has an inner screw and an outer screw that engages with the inner screw, and a gasket is interposed between the spout and the opening. Then, by screwing the inner screw and the outer screw, the gasket is pressed and surrounded by the end portion of the attachment portion between the films overlapped to face each other in a state before the bag body is inflated. A straight line connecting two regions is parallel to a straight line connecting the first central portion of the outer container and the opening, and a direction of deviation of the opening from the first central portion, and the first of the spout (2) The outer container and liquid container combination, wherein the spout is fixed in the rotational direction so that the direction of deviation from the center is in the same direction.   The assembly of an outer container and a liquid container according to claim 1 or 2, wherein the gasket contains ethylene propylene rubber.   The combination of the outer container and the liquid container according to any one of claims 1 to 3, wherein a lubricant is provided on a surface of the gasket. A bag body having a second central portion passing through the central portion of the upper edge;
While having an attachment part attached between the second central part and one side of the bag body, and comprising a spout attached to the opening of the outer container,
A liquid storage container, wherein an ethylene propylene rubber gasket is provided at the spout.   An exterior container having a first central portion passing through the upper central portion and having an opening provided at a position shifted from the first central portion, wherein an ethylene propylene rubber gasket is provided in the opening. An exterior container characterized by.

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