JP2017190181A - Delamination container - Google Patents

Abstract

An object of the present invention is to provide a delamination container capable of rapidly introducing outside air into a space between an outer shell and an inner bag after the contents are discharged. A container body having an outer shell (12) and an inner bag (14), the inner bag shrinking as content decreases, an intermediate space (21) between the outer shell and the inner bag, and an outer space (S) of the container body. A delamination container comprising a valve member 4 for adjusting air flow between the , the housing portion is provided with an outside air introduction hole 15 for communicating the intermediate space and the external space, and the valve member is a cylindrical body 5 having a hollow portion provided so as to communicate the external space and the intermediate space, and is movable in the hollow portion. The cylindrical body has a first stopper portion 5h that restricts the movement of the moving body to the outside space side by locking the moving body, and the valve member moves A delamination container is provided in which air communication through the cavity is interrupted when the body abuts the first stopper. [Selection drawing] Fig. 4

Description

  The present invention relates to a delamination container in which an inner bag shrinks with a decrease in contents.

  2. Description of the Related Art Conventionally, there has been known a delamination container that includes an outer shell and an inner bag and that shrinks as the contents are reduced (for example, Patent Document 1). In the delamination container of Patent Document 1, a valve member is attached to an outside air introduction hole formed in the outer shell of the container body, and the outside air introduction hole is opened and closed by moving the valve member relative to the container body. It is configured.

WO / 2015/080015

  However, in the configuration of Patent Document 1, movement of the valve member may be hindered by pressing the valve member toward the outer shell by the inner bag. If the movement of the valve member is hindered, outside air is not properly introduced at the timing when outside air should be introduced into the space between the outer shell and the inner bag through the outside air introduction hole after the contents are discharged. Restorability may deteriorate.

  This invention is made | formed in view of such a situation, and provides the lamination | stacking peeling container which can introduce external air rapidly to the space between an outer shell and an inner bag after discharge of the contents.

  According to the present invention, a container main body having an outer shell and an inner bag and shrinking as the contents are reduced, an intermediate space between the outer shell and the inner bag, and the container main body A delamination container including a valve member that adjusts the flow of air to and from an external space, wherein the container body includes a storage unit that stores the contents, and a mouth portion that discharges the contents from the storage unit The outer shell includes an outside air introduction hole that communicates the intermediate space and the outer space in the housing portion, and the valve member is a cavity provided to communicate the outer space and the intermediate space A cylindrical body having a portion and a movable body arranged to be movable in the hollow portion, and the cylindrical body regulates movement of the movable body to the external space side by locking the movable body. The valve member includes a first stopper portion that performs movement of the movable member. Delamination container configured stopper portion the flow of air through the cavity and abuts is interrupted is provided.

  According to the present invention, since the valve member includes the cylindrical body having the hollow portion provided so as to communicate the outer space and the intermediate space, and the movable body arranged to be movable in the hollow portion, the cylindrical body. Thus, the interference between the valve member and the inner bag is suppressed. As a result, after the contents are discharged, the outside air is quickly introduced into the space between the outer shell and the inner bag through the outside air introduction hole.

  Hereinafter, various embodiments of the present invention will be exemplified. The following embodiments can be combined with each other.

  Preferably, the valve member has a state in which the moving body is positioned closer to the outer space side than a tip on the intermediate space side of the cylindrical body from a state where the moving body is in contact with the first stopper portion. It is configured to be movable toward the intermediate space while maintaining.

  Preferably, the cylindrical body further includes a second stopper portion that locks the movable body and restricts the movement of the movable body toward the intermediate space.

  Preferably, the movable body is configured to be positioned closer to the external space than the distal end of the cylindrical body even in a state of being locked to the second stopper portion.

  Preferably, the cylindrical body has the first stopper portion on a surface surrounding the cavity portion, and the second stopper portion is provided on the outer space side with respect to the first stopper portion.

  Preferably, the movable body includes a columnar shaft portion, and the shaft portion is configured to move along the hollow portion of the cylindrical body.

  Preferably, the moving body is provided on an outer space side of the shaft portion and is in contact with the second stopper portion, and is provided on an intermediate space side of the shaft portion and the first stopper portion. And an inflated portion that comes into contact with.

  Preferably, the cylindrical body includes a cylindrical shaft portion disposed in the outside air introduction hole, and a cylinder that is provided on the external space side of the cylindrical shaft portion and prevents the cylindrical body from entering the intermediate space. In addition to having a body locking portion, it has a tubular body bulge portion provided on the intermediate space side of the tubular body shaft portion and preventing the tubular body from being pulled out from the outside of the container body.

  Preferably, the cylindrical shaft portion is tapered toward the external space side.

  Preferably, the cylindrical body bulge portion is tapered toward the intermediate space side.

The lamination peeling container 1 of 1st Embodiment of this invention is shown, (a) is a front view of the state which attached the cap 23 and the valve member 4 to the container main body 3, (b) is the front which shows only the container main body 3. FIG. FIG. (A) is AA sectional drawing in Fig.1 (a), (b) is sectional drawing of the state which opened the cap cover 23i of the cap 23 of Fig.2 (a). 3 is a cross-sectional view showing a layer configuration of an inner layer 13. FIG. It is sectional drawing which shows the state which mounted | wore the outer shell 12 with the valve member 4 of Fig.1 (a). It is sectional drawing which decomposes | disassembles and shows the cylinder 5 and the moving body 6 of the valve member 4 of Fig.1 (a). FIG. 6 is a perspective view of the exploded valve member 4 of FIG. 5. It is the perspective view which looked at the valve member 4 decomposed | disassembled from the other angle. It is explanatory drawing which shows the state of the valve member 4 of Fig.1 (a), (a) is the state which the mobile body 6 contact | abutted the 1st stopper part 5h, and obstruct | occluded the cavity part 5g, (b) is movement. The state where the body 6 and the first stopper portion 5h are not in contact with each other and the intermediate space and the external space are communicated is shown. It is sectional drawing which shows the modification of the valve member 4 of Fig.1 (a). The valve member 4 of the lamination peeling container 1 of 2nd Embodiment of this invention is shown, (a) is a front view of the cylinder 5, (b) is a bottom view of the cylinder 5, (c) is in (b). A sectional view taken on line AA, (d) is a sectional view taken along line BB in (c), (e) is a sectional view of the valve member 4, and (f) is a section showing a state in which the valve member 4 is mounted on the outer shell 12. FIG. 4G is a cross-sectional view showing a state in which the moving body 6 is in contact with the first stopper portion 5h and closes the cavity portion 5g.

  Hereinafter, embodiments of the present invention will be described. Various characteristic items shown in the following embodiments can be combined with each other. The invention is established independently for each feature.

1. 1st Embodiment As shown in FIGS. 1-2, the lamination peeling container 1 of 1st Embodiment of this invention is provided with the container main body 3 and the valve member 4. As shown in FIG. The container body 3 includes a storage portion 7 that stores the contents, and a mouth portion 9 that has an opening 9 g that discharges the contents from the storage portion 7.

  As shown in FIG. 2, the container body 3 includes an outer layer 11 and an inner layer 13 in the accommodating portion 7 and the mouth portion 9, an outer shell 12 is constituted by the outer layer 11, and an inner bag 14 is constituted by the inner layer 13. The As the contents decrease, the inner layer 13 moves away from the outer layer 11, whereby the inner bag 14 moves away from the outer shell 12 and contracts. In addition, before accommodating the content in the accommodating part 7, the preliminary | backup peeling process which peels the inner layer 13 from the outer layer 11 may be performed. In this case, after the preliminary peeling, the inner layer 13 is brought into contact with the outer layer 11 by blowing air into the accommodating portion 7 or accommodating the contents. And the inner layer 13 leaves | separates from the outer layer 11 with the content reduction. On the other hand, when the preliminary peeling step is not performed, the inner layer 13 is peeled from the outer layer 11 and separated from the outer layer 11 when the contents are discharged.

  Here, the outer layer 11 is composed of, for example, low density polyethylene, linear low density polyethylene, high density polyethylene, polypropylene, ethylene-propylene copolymer, and a mixture thereof. The outer layer 11 may have a multi-layer configuration. For example, a configuration in which both sides of the repro layer are sandwiched between layers formed of a virgin material may be used. Here, the repro layer refers to a layer that is recycled from the burr that was produced when the container was molded. Moreover, the outer layer 11 is formed thicker than the inner layer 13 so that the restoring property becomes high.

  As shown in FIG. 3, the inner layer 13 is provided between the EVOH layer 13a provided on the outer surface side of the container, the inner surface layer 13b provided on the inner surface side of the EVOH layer 13a, and between the EVOH layer 13a and the inner surface layer 13b. The adhesive layer 13c is provided. By providing the EVOH layer 13a, the gas barrier property and the peelability from the outer layer 11 can be improved. The adhesive layer 13c may be omitted.

  The EVOH layer 13a is a layer made of an ethylene-vinyl alcohol copolymer (EVOH) resin, and is obtained by hydrolysis of ethylene and vinyl acetate copolymer. The ethylene content of the EVOH resin is, for example, 25 to 50 mol%, and preferably 32 mol% or less from the viewpoint of oxygen barrier properties. Although the minimum of ethylene content is not prescribed | regulated, since the softness | flexibility of EVOH layer 13a tends to fall, so that ethylene content is small, 25 mol% or more is preferable. The EVOH layer 13a preferably contains an oxygen absorbent. By containing the oxygen absorbent in the EVOH layer 13a, the oxygen barrier property of the EVOH layer 13a can be further improved.

  The inner surface layer 13b is a layer that comes into contact with the contents of the delamination container 1, and is, for example, a polyolefin such as low density polyethylene, linear low density polyethylene, high density polyethylene, polypropylene, ethylene-propylene copolymer, and a mixture thereof. It is preferably made of low-density polyethylene or linear low-density polyethylene. 50-300 MPa is preferable and, as for the tensile elasticity modulus of resin which comprises the inner surface layer 13b, 70-200 MPa is preferable. This is because the inner surface layer 13b is particularly flexible when the tensile elastic modulus is in such a range. The tensile modulus is specifically, for example, specifically, for example, 50, 100, 150, 200, 250, 300 MPa, and may be within a range between any two of the numerical values exemplified here. .

  The adhesive layer 13c is a layer having a function of adhering the EVOH layer 13a and the inner surface layer 13b. For example, an acid-modified polyolefin having a carboxyl group introduced into the above-described polyolefin (eg, maleic anhydride-modified polyethylene) is added. And ethylene vinyl acetate copolymer (EVA). An example of the adhesive layer 13c is a mixture of low-density polyethylene or linear low-density polyethylene and acid-modified polyethylene.

  The mouth portion 9 is provided with an engaging portion 9 d that can engage with the cap 23. The cap 23 may be a stopper type or a screw type.

  In this embodiment, the cap 23 is a stopper type, and includes a cap body 23a and a cap cover 23i as shown in FIG. The cap main body 23a and the cap cover 23i are connected at a connecting portion 23j, and the cap cover 23i can be opened and closed. The cap body 23a includes an upper part 23t, a discharge port 23b provided in the upper part 23t, a cylindrical part 23f extending in a cylindrical shape from the outer periphery of the upper part 23t, and an engaging part provided along the inner peripheral surface of the cylindrical part 23f. 23c, an inner ring 23d extending in a cylindrical shape from the upper portion 23t inside the cylindrical portion 23f, a flow passage 23g provided inside the inner ring 23d and communicating with the discharge port 23b, and provided in the flow passage 23g. An annular valve seat 23r extending inward from 23d and a check valve 23e are provided. The check valve 23e has a valve body 23e1 that closes the discharge hole 23r1 formed at the center of the annular valve seat 23r, and a plurality of elastic members that extend from the inner ring 23d toward the center in the radial direction and elastically support the valve body 23e1. It has a piece 23e2. Then, the check valve 23e is opened by the valve body 23e1 being pushed up from the discharge hole 23r1 by the pressure increase in the accommodating portion 7. The engaging portion 23 c is an annular protrusion that can be engaged with the engaging portion 9 d of the mouth portion 9. In a state where the cap 23 is attached to the mouth portion 9, the contents in the storage portion 7 are discharged from the discharge port 23b through the flow passage 23g. On the other hand, since the check valve 23e blocks the inflow of the outside air from the discharge port 23b, the outside air does not enter the inner bag 14 of the container body 3, and the deterioration of the contents is suppressed. In addition, the structure of the cap 23 shown here is an example, Comprising: You may employ | adopt the cap 23 which has a check valve of another structure.

  By the way, as shown in FIG. 1, the accommodating portion 7 is provided with a valve member mounting concave portion 7 a having an inclined plane. The concave portion 7 a is a through hole provided only in the outer shell 12 and has an intermediate space. An outside air introduction hole 15 that communicates the outer space 21 with the outer space 21 is provided. As shown in FIGS. 1, 2, and 4, the housing portion 7 is attached to the outside air introduction hole 15, so that the intermediate space 21 between the outer shell 12 and the inner bag 14, and the container body 3. The valve member 4 which adjusts the entrance / exit of the air between these external spaces S is provided. In addition, the recessed part 7a is provided in order to avoid interference of the valve member 4 and a shrink film, when covering the accommodating part 7 with a shrink film (refer FIG. 2). Further, an air circulation groove 7b extending from the recess 7a toward the mouth 9 is provided so that the recess 7a is not sealed with the shrink film (see FIG. 1).

  As shown in FIGS. 4 to 6, the valve member 4 is accommodated in a cylindrical body 5 having a hollow portion 5 g provided so as to communicate the outer space S and the intermediate space 21, and movably accommodated in the hollow portion 5 g. The moving body 6 is provided. The cylindrical body 5 and the movable body 6 are formed by injection molding or the like, and the movable body 6 is pushed into the hollow portion 5g by pushing the movable body 6 into the hollow portion 5g so as to get over a first stopper portion 5h described later. Can be arranged.

  As shown in FIG. 5, the cylindrical body 5 includes a cylindrical shaft portion 5a disposed in the outside air introduction hole 15, a cylindrical body locking portion 5b provided on the external space S side of the cylindrical shaft portion 5a, It has a cylindrical expanded diameter portion 5c provided on the intermediate space 21 side of the body shaft portion 5a.

  In this embodiment, the cylindrical shaft portion 5a is tapered toward the intermediate space 21 side. That is, the outer peripheral surface of the cylindrical shaft portion 5a is a tapered surface. And the cylinder 5 is mounted | worn with the container main body 3 because the outer peripheral surface of the cylinder shaft part 5a closely_contact | adheres to the edge of the external air introduction hole 15 (refer FIG. 4). With such a configuration, the gap between the edge of the outside air introduction hole 15 and the cylindrical body 5 can be reduced. As a result, when the container main body 3 is compressed, the air in the intermediate space 21 becomes free from the outside air introduction hole 15. Outflow from the gap between the edge and the cylinder 5 can be suppressed. The cylindrical body locking portion 5b has an outer diameter larger than the outer diameter of the cylindrical body shaft portion 5a, and the intermediate space 21 side is a locking surface 5b1 that comes into contact with the outer shell 12. When the cylindrical body shaft portion 5a and the cylindrical body expanded diameter portion 5c of the cylindrical body 5 are inserted into the outside air introduction hole 15, the cylindrical body locking portion 5b prevents the cylindrical body 5 from entering the intermediate space 21. Is done. The cylindrical body bulging portion 5c has an outer diameter at the central portion in the axial direction larger than the outer diameter of the cylindrical shaft portion 5a, and the cylindrical body bulging portion 5c allows the cylindrical body 5 to be pulled out from the outside of the container body 3. Is prevented. The cylindrical body 5 is attached to the container main body 3 with the outer peripheral surface of the cylindrical shaft portion 5a being in close contact with the edge of the outside air introduction hole 15, and therefore the cylindrical expanded diameter portion 5c is not necessarily essential.

  Moreover, as shown in FIG. 6, the front end of the cylindrical body 5 is a flat surface 5d. The flat surface 5d is provided with an opening 5e communicating with the cavity 5g, and is opposed in the circumferential direction. Cutouts 5f are formed at two places. According to such a configuration, even if the tip of the cylinder 5 touches the inner bag 14, the inner bag 14 is hardly damaged and the air flow can be prevented from being hindered.

  The hollow portion 5g of the cylindrical body 5 is formed by a narrow diameter portion 5g1 formed by the cylindrical shaft portion 5a and the inner peripheral surface 5j1 of the cylindrical body expanded diameter portion 5c, and an inner peripheral surface 5j2 of the cylindrical body locking portion 5b. The cross-sectional shape is substantially T-shaped as shown in FIG. A first stopper portion 5h, which is an annular protrusion that makes the diameter of the cavity portion 5g smaller than that of the narrow diameter portion 5g1, is provided at the boundary portion between the narrow diameter portion 5g1 and the wide diameter portion 5g2. The first stopper portion 5h moves the moving body 6 to the external space S side by locking the moving body 6 when the moving body 6 moves from the intermediate space 21 side toward the external space S side. To regulate.

  A second stopper portion 5k that restricts the movement of the moving body 6 toward the intermediate space 21 is provided at a position closer to the external space S than the first stopper portion 5h. The second stopper portion 5k is an annular flat surface formed on the outer space S side of the boundary portion between the narrow diameter portion 5g1 and the wide diameter portion 5g2, and comes into contact with a locking portion 6b of the moving body 6 described later. The movement of the moving body 6 toward the intermediate space 21 is restricted.

  On the other hand, the movable body 6 is a columnar member that is substantially similar to the hollow portion 5g of the cylindrical body 5, and includes a shaft portion 6a, a locking portion 6b provided on the outer space S side of the shaft portion 6a, It has an enlarged diameter part 6c provided on the intermediate space 21 side of the part 6a. In the present embodiment, the entire moving body 6 is sized to be accommodated in the hollow portion 5 g of the cylindrical body 5.

  The outer diameter of the shaft portion 6a is set to be slightly smaller than the inner diameter of the first stopper portion 5h, and the moving body 6 is axially moved while being accommodated in the hollow portion 5g of the cylindrical body 5. Can be moved to. The locking portion 6b has an outer diameter larger than the outer diameter of the shaft portion 6a, and the outer surface on the intermediate space 21 side is a locking surface 6b1 that comes into contact with the second stopper portion 5k of the cylindrical body 5. (See FIG. 6). The locking surface 6b1 prevents the moving body 6 from entering the intermediate space 21 in a state where the moving body 6 is accommodated in the hollow portion 5g of the cylindrical body 5. As shown in FIG. 6, a flow passage 6b2 is provided on the outer surface of the locking portion 6b on the intermediate space 21 side, and the locking surface 6b1 of the locking portion 6b is connected to the second stopper portion 5k of the cylindrical body. In the abutted state, outside air can be introduced into the intermediate space 21 through the flow passage 6b2. Further, the expanded diameter portion 6c has an outer diameter at the central portion in the axial direction larger than the outer diameter of the shaft portion 6a, and the inclined surface 6c1 on the outer space S side of the expanded diameter portion 6c is the first stopper of the cylindrical body 5. By contacting the part 5h, the air flow through the cavity 5g between the intermediate space 21 and the external space S is blocked, and the cavity 5g is closed. In the present embodiment, by increasing the dimensional accuracy of the slope 5c1 on the outer space S side of the first stopper portion 5h and the expanded diameter portion 6c of the cylindrical body 5, the air between the intermediate space and the outer space is increased. Distribution can be completely blocked.

  The diameter of the hollow portion 5g in the cross section is slightly larger than the diameter of the corresponding cross section of the moving body 6, and as shown in FIG. 8, the expanded diameter portion 6c is the first stopper portion 5h. The movable body 6 is free to move in the axial direction until the locking portion 6b comes into contact with the second stopper portion 5k (see FIG. 8B) from the state in contact with the contact (see FIG. 8A). It has a movable shape. The ratio value defined by the diameter of the hollow portion 5g (diameter of the transverse section / corresponding section of the moving body 6) is preferably 1.01 to 1.2, and more preferably 1.05 to 1.15. If this value is too small, smooth movement of the moving body 6 is hindered. If this value is too large, the gap between the surface 5j surrounding the cavity 5g and the moving body 6 becomes too large, and the container body 3 is compressed. This is because the force applied to the moving body 6 tends to be insufficient.

  The valve member 4 having the above-described configuration is formed by inserting the tubular body bulging portion 5c into the intermediate space 21 while the tubular body bulging portion 5c of the tubular body 5 pushes the outside air introduction hole 15 wide. Can be attached to. Therefore, it is preferable that the tip of the cylindrical expanded diameter portion 5c has a tapered shape. Such a valve member 4 is excellent in productivity because it can be mounted simply by pushing the cylindrical expanded diameter portion 5 c into the intermediate space 21 from the outside of the container body 3. Since the flat surface 5 d is provided at the tip of the cylinder 5, the inner bag 14 does not move even if the tip of the valve member 4 collides with the inner bag 14 when the valve member 4 is pushed into the intermediate space 21. It is hard to get hurt.

  Next, the operation principle of the valve member when using the delamination container of this embodiment will be described.

  As shown in FIG. 4, when the valve member 4 is inserted into the outside air introduction hole 15 from the cylindrical body bulging portion 5 c side and pushed into a position where the cylindrical body locking portion 5 b contacts the outer surface of the outer shell 12, The cylindrical shaft 5 a is held by the outer shell 12 in a state where the outer peripheral surface of the cylindrical shaft portion 5 a is in close contact with the edge of the outside air introduction hole 15. When the outer shell 12 is compressed with air in the intermediate space 21, the air in the intermediate space 21 enters the cavity 5g through the opening 5e, pushes up the moving body 6 and contacts the first stopper 5h. (See FIG. 8A). When the moving body 6 comes into contact with the first stopper portion 5h, the air flow through the hollow portion 5g is blocked.

  When the outer shell 12 is further compressed in this state, the pressure in the intermediate space 21 is increased. As a result, the inner bag 14 is compressed and the contents in the inner bag 14 are discharged. Further, when the compressive force applied to the outer shell 12 is released, the outer shell 12 tries to recover by its own elasticity. As the inside of the intermediate space 21 is decompressed as the outer shell 12 is restored, a force FI in the direction of the intermediate space 21 is applied to the moving body 6 as shown in FIG. As a result, the moving body 6 moves in the direction of the intermediate space 21 and comes into contact with the second stopper portion 5k, resulting in the state shown in FIG. 8B. As a result, outside air is introduced into the intermediate space 21 through the gap between the moving body 6 and the inner peripheral surfaces 5j1 and 5j2, the flow passage 6b2, and the opening 5e, and the outer shell 12 is restored.

  In addition, as shown in FIG. 8, the valve member 4 according to the present embodiment has an intermediate space even when the movable body 6 moves to the external space S side and the expanded diameter portion 6c contacts the first stopper portion 5h. Even when the locking portion 6b is in contact with the second stopper portion 5k by moving to the 21 side, the end 6d on the intermediate space 21 side of the moving body 6 is more external than the flat surface 5d that is the tip of the cylindrical body 5. The state of being located on the space S side is maintained. Since it has such a structure, it is suppressed that the inner bag 14 and the moving body 6 interfere, and the operation | movement of the moving body 6 is prevented, and introduces the external air to the intermediate space 21 promptly and reliably. Is possible.

In addition, this invention can be implemented also with the following aspects.
In the above embodiment, the cylindrical shaft portion 5a of the cylindrical body 5 has a tapered shape toward the intermediate space 21 side. However, like the cylindrical body 5 shown in FIG. You may comprise so that it may become a taper shape toward the side. By doing in this way, once the cylinder 5 is attached to the outside air introduction hole 15 of the outer shell 12, the cylinder 5 is difficult to be removed.
In the above embodiment, the entire moving body 6 is accommodated in the cylinder 5, but as shown in FIG. 9, the engaging portion 6 b of the moving body 6 is positioned outside the hollow portion 5 g. You can also. In this case, the second stopper portion 5k is constituted by an end surface of the cylindrical body 5 on the external space S side.
In the above embodiment, the movable body 6 is always positioned closer to the outer space S side than the flat surface 5d of the cylindrical body 5. However, the movable body 6 moves to the intermediate space 21 side and the locking portion 6b. In a state in which the second contact portion 5k is in contact with the second stopper portion 5k, the end portion 6d of the movable body 6 may be positioned slightly closer to the intermediate space 21 than the flat surface 5d of the cylindrical body 5. Even in this case, since the force in the container outer direction applied to the moving body 6 by the restoring force of the inner bag 14 is reduced as compared with the case where there is no cylindrical body 5, the operation of the moving body 6 is hindered. Can be suppressed.
In the above embodiment, the hollow portion 5g has a columnar shape in which cylinders with different diameters are overlapped, and the moving body 6 has a substantially similar shape in which the cylindrical body 5 is made smaller. Another shape may be used as long as the function can be realized.

2. Second Embodiment A delamination container according to a second embodiment of the present invention will be described with reference to FIG. The second embodiment is different only in the configuration of the valve member 4. Hereinafter, the difference will be mainly described.

  The valve member 4 according to the present embodiment includes a cylindrical body 5 having a hollow portion 5g provided so as to communicate the external space S and the intermediate space 21, and a movable body 6 movably accommodated in the hollow portion 5g. Is provided. The cylindrical body 5 and the movable body 6 are formed by injection molding or the like, and the movable body 6 is disposed in the cavity portion 5g by pushing the movable body 6 into the cavity portion 5g so as to get over the first stopper portion 5h. Can be made. In the present embodiment, the hollow portion 5g has a substantially cylindrical shape, and the moving body 6 has a substantially spherical shape, but may have another shape as long as the same function as that of the present embodiment can be realized. . The diameter of the hollow portion 5g in the cross section (the cross section in FIG. 5 (d)) is slightly larger than the diameter in the corresponding cross section of the moving body 6, and the moving body 6 is shown by the arrow in FIG. 5 (c). The shape is freely movable in the B direction. The ratio value defined by the diameter of the cross section of the cavity 5g / the diameter of the corresponding cross section of the moving body 6 is preferably 1.01 to 1.2, and more preferably 1.05 to 1.15. If this value is too small, smooth movement of the moving body 6 is hindered. If this value is too large, the gap between the surface 5j surrounding the cavity 5g and the moving body 6 becomes too large, and the container body 3 is compressed. This is because the force applied to the moving body 6 tends to be insufficient.

  The cylindrical body 5 is provided with a cylindrical shaft portion 5 a disposed in the outside air introduction hole 15, and a cylindrical body member that is provided on the external space S side of the cylindrical shaft portion 5 a and prevents the cylindrical body 5 from entering the intermediate space 21. A stopper 5b and a cylindrical body bulging portion 5c provided on the intermediate space 21 side of the cylindrical shaft portion 5a and preventing the cylindrical body 5 from being pulled out from the outside of the container body 3 are provided. The cylindrical shaft portion 5a is tapered toward the intermediate space 21 side. The cylindrical body 5 is attached to the container main body 3 when the outer peripheral surface of the cylindrical body shaft portion 5 a is in close contact with the edge of the outside air introduction hole 15. With such a configuration, the gap between the edge of the outside air introduction hole 15 and the cylindrical body 5 can be reduced. As a result, when the container main body 3 is compressed, the air in the intermediate space 21 becomes free from the outside air introduction hole 15. Outflow from the gap between the edge and the cylinder 5 can be suppressed. In addition, since the cylinder 5 is attached to the container main body 3 when the outer peripheral surface of the cylinder shaft portion 5a is in close contact with the edge of the outside air introduction hole 15, the cylinder expansion portion 5c is not necessarily essential. Moreover, the cylindrical shaft part 5a may be tapered toward the outside of the container, and the outer peripheral shape of the cylindrical shaft part 5a may be a columnar shape that does not change along the axial direction.

  A first stopper portion 5h that locks the moving body 6 when the moving body 6 moves from the intermediate space 21 side toward the external space S side is provided on the surface 5j surrounding the cavity 5g. The first stopper portion 5h is configured by an annular protrusion, and when the moving body 6 comes into contact with the first stopper portion 5h, the air flow through the hollow portion 5g is blocked.

  Moreover, the front-end | tip of the cylinder 5 is the flat surface 5d, and the opening part 5e connected to the cavity part 5g is provided in the flat surface 5d. The opening 5e has a substantially circular central opening 5e1 provided at the center of the flat surface 5d, and a plurality of slits 5e2 radiating from the central opening 5e1. In the present embodiment, the slit portion 5e2 corresponds to the second stopper portion in the claims. According to such a configuration, the flow of air is not hindered even when the moving body 6 is in contact with the bottom of the cavity 5g.

  As shown in FIG. 5 (f), the valve member 4 is inserted into the outside air introduction hole 15 from the cylindrical body bulging portion 5 c side and pushed into a position where the cylindrical body locking portion 5 b contacts the outer surface of the outer shell 12. Then, the outer peripheral surface of the cylindrical shaft portion 5a is held by the outer shell 12 in a state where the outer peripheral surface is in close contact with the edge of the outside air introduction hole 15. When the outer shell 12 is compressed with air in the intermediate space 21, the air in the intermediate space 21 enters the cavity 5g through the opening 5e, pushes up the moving body 6 and contacts the first stopper 5h. Make contact. When the moving body 6 comes into contact with the first stopper portion 5h, the air flow through the hollow portion 5g is blocked.

  When the outer shell 12 is further compressed in this state, the pressure in the intermediate space 21 is increased. As a result, the inner bag 14 is compressed and the contents in the inner bag 14 are discharged. Further, when the compressive force applied to the outer shell 12 is released, the outer shell 12 tries to recover by its own elasticity. By reducing the pressure in the intermediate space 21 as the outer shell 12 is restored, a force FI in the container inner direction is applied to the moving body 6 as shown in FIG. As a result, the moving body 6 moves toward the bottom of the hollow portion 5g and enters the state shown in FIG. 10 (f), and the outside air enters the intermediate space 21 through the gap between the moving body 6 and the surface 5j and the opening 5e. Is introduced.

  The valve member 4 can be attached to the container main body 3 by inserting the cylindrical expansion portion 5 c into the intermediate space 21 while the cylindrical expansion portion 5 c pushes the outside air introduction hole 15. Therefore, it is preferable that the tip of the cylindrical expanded diameter portion 5c has a tapered shape. Such a valve member 4 is excellent in productivity because it can be mounted simply by pushing the cylindrical expanded diameter portion 5 c into the intermediate space 21 from the outside of the container body 3. Since the flat surface 5 d is provided at the tip of the cylinder 5, the inner bag 14 does not move even if the tip of the valve member 4 collides with the inner bag 14 when the valve member 4 is pushed into the intermediate space 21. It is hard to get hurt.

  The valve member 4 of the present embodiment configured as described above also moves to the first stopper portion 5h when the moving body 6 moves to the external space S side as shown in FIGS. 10 (f) and 10 (g). Even in the state of contact, the end 6d of the movable body 6 on the intermediate space 21 side is the tip of the cylindrical body 5 even in the state of moving toward the intermediate space 21 and contacting the slit portion 5e2 that is the second stopper portion. The configuration is such that a state of being located closer to the external space S than a certain flat surface 5d (see FIG. 10A) is maintained. Due to such a configuration, the inner bag 14 and the moving body 6 are prevented from interfering with each other and the movement of the moving body 6 is prevented from being prevented, and the outside air to the intermediate space 21 is introduced quickly and reliably. Is possible.

1: Laminated peeling container, 3: Container body, 4: Valve member, 5: Cylindrical body, 5a: Cylindrical shaft portion, 5b: Cylindrical locking portion, 5c: Cylindrical bulging portion, 5d: Flat surface (tip ), 5e: opening, 5g: hollow portion, 5h: first stopper portion, 5k: second stopper portion, 6: moving body, 6d: end portion, 7: accommodating portion, 9: mouth portion, 12: Outer shell, 14: inner bag, 15: outside air introduction hole, 21: intermediate space, 23: cap, S: outer space

Claims (10)

A container main body having an outer shell and an inner bag, and the inner bag shrinks as the contents decrease;
A delamination container comprising a valve member that adjusts the flow of air between an intermediate space between the outer shell and the inner bag and an outer space of the container body,
The container body includes a storage unit that stores the contents, and a mouth portion that discharges the contents from the storage unit,
The outer shell includes an outside air introduction hole that communicates the intermediate space and the outer space in the housing portion,
The valve member includes a cylindrical body having a hollow portion provided so as to communicate the external space and the intermediate space, and a movable body arranged to be movable in the hollow portion,
The cylindrical body includes a first stopper portion that restricts the movement of the movable body toward the external space by locking the movable body,
The valve member is a delamination container configured so that air flow through the cavity is blocked when the moving body contacts the first stopper.   The valve member maintains a state in which the movable body is positioned closer to the external space than a distal end on the intermediate space side of the cylindrical body from a state where the movable body is in contact with the first stopper portion. The delamination container according to claim 1, configured to be movable toward the intermediate space.   3. The delamination container according to claim 1, wherein the cylindrical body further includes a second stopper portion that locks the moving body and restricts the moving body from moving toward the intermediate space.   4. The delamination container according to claim 3, wherein the movable body is configured to be positioned closer to the external space than the tip of the cylindrical body even in a state where the movable body is locked to the second stopper portion.   The said cylindrical body has the said 1st stopper part in the surface surrounding the said cavity part, and is equipped with the said 2nd stopper part in the said external space side rather than the said 1st stopper part. 4. The delamination container according to 4.   The delamination container according to any one of claims 1 to 5, wherein the movable body includes a columnar shaft portion, and the shaft portion is configured to move along the hollow portion of the cylindrical body.   The movable body is provided on the outer space side of the shaft portion and is in contact with the second stopper portion, and is provided on the intermediate space side of the shaft portion and is in contact with the first stopper portion. The delamination container according to claim 6, comprising an enlarged diameter portion.   The cylindrical body includes a cylindrical shaft portion disposed in the outside air introduction hole, and a cylindrical body locking provided on the external space side of the cylindrical shaft portion and preventing the cylindrical body from entering the intermediate space. And a cylindrical body bulging portion that is provided on the intermediate space side of the cylindrical shaft portion and prevents the cylindrical body from being pulled out from the outside of the container main body. The delamination container according to any one of the above.   The delamination container according to claim 8, wherein the cylindrical shaft portion is tapered toward the external space side.   10. The delamination container according to claim 8, wherein the cylindrical expanded diameter portion is tapered toward the intermediate space.