JP2019167160A - Cap and delamination container - Google Patents

Abstract

To provide a cap which has a check valve capable of opening and closing smoothly.SOLUTION: According to this invention, in a cap which is mounted on a mouth portion of a container that stores contents, the cap comprises a valve body and a pedestal portion, and the valve body comprises a communication hole, and the valve body is closed by a state that an edge of the communication hole comes in contact with the pedestal portion, when inner pressure depending on the contents does not add to an annular portion of surroundings of the communication hole, and the cap is consisted so that the edge of the communication hole is away from the pedestal portion and the communication hole is opened by a state that the valve body transforms elastically when the inner pressure adds to the annular portion of the surroundings of the communication hole.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a cap provided with a check valve, and a laminate peeling container provided with the cap.

  Patent Document 1 discloses a cap having a slit valve in which a slit is provided in a discharge valve.

JP 2013-95455 A

  The slit valve of Patent Document 1 may cause a problem that the contents are not easily discharged without opening the slit valve when the container is lightly compressed.

  This invention is made | formed in view of such a situation, and provides the cap which has a non-return valve which can be opened and closed smoothly.

  According to the present invention, the cap is attached to the mouth portion of the container that contains the contents, and includes a valve body and a pedestal, the valve body includes the flow hole, and the valve body includes the flow hole. When the internal pressure due to the contents is not applied to the surrounding annular portion, the edge of the flow hole is closed by contacting the pedestal, and when the internal pressure is applied to the annular portion around the flow hole, the valve body is A cap is provided that is configured to be elastically deformed so that an edge of the flow hole is separated from the pedestal and the flow hole is opened.

  In the slit valve as disclosed in Patent Document 1, it is necessary to greatly deform the discharge valve in order to open the slit provided in the discharge valve. For this reason, the contents are discharged only by lightly compressing the container. I couldn't.

  On the other hand, in the cap of the present invention, the check valve is configured by the valve body and the pedestal configured as described above. In such a check valve, the check valve is opened only by slightly separating the valve body from the pedestal. . Further, the check valve is closed when the flow hole of the valve body contacts the pedestal. For this reason, the opening / closing operation of the check valve is smooth.

Hereinafter, various embodiments of the present invention will be exemplified. The following embodiments can be combined with each other.
Preferably, in the cap described above, the valve body includes a hook-shaped portion, the flow hole is provided at a bottom of the hook-shaped portion, and the valve body is an annular portion around the flow hole. When the internal pressure is applied to the cap, the cap is configured to be elastically deformed so as to be reversed.
Preferably, in the cap described above, the pedestal is provided in an inner plug inserted into the mouth portion, and the inner plug includes a tube portion and a leg portion, and the leg portion includes the tube portion. And the pedestal, and the pedestal is a cap provided in a columnar shape on the leg.
Preferably, in the cap described above, the pedestal is provided in an inner plug inserted into the mouth portion, and the inner plug includes a cylindrical portion, and a valve body is supported on an inner peripheral surface of the cylindrical portion. The valve body includes a flange, and the flange is supported on the valve body support section.
Preferably, the cap described above includes a nozzle, the nozzle has a discharge cylinder portion, the contents are discharged through the discharge cylinder portion, and the discharge cylinder portion includes It is a cap provided with a regulation wall that reduces the momentum of discharge.
Preferably, in the cap described above, the restriction wall is supported by a plurality of arms protruding from the inner surface of the nozzle.
Preferably, a delamination container including a container main body and a cap, wherein the container main body has an outer shell and an inner bag and is configured such that the inner bag contracts as the content decreases. The cap is a delamination container that is the cap described above.

It is a front view of the lamination peeling container 1 which concerns on 1st Embodiment of this invention. 2 is a cross-sectional view taken along the line AA in FIG. It is a perspective view of the cap 2 in FIG. It is a perspective view of the cap 2 in the same cross section as FIG. 5A is a perspective view in which the nozzle 23 and the cover 24 are extracted from FIG. 4, and FIG. 5B is a perspective view in which the valve body 21 and the inner plug 22 are extracted from FIG. 6A to 6C show the valve body 21, FIG. 6A is a perspective view seen from the upper side, FIG. 6B is a perspective view seen from the lower side, and FIG. 6C is a sectional view in the same cross section as FIG. is there. 7A to 7D show the inner plug 22, FIG. 7A is a perspective view seen from the upper side, FIG. 7B is a perspective view seen from the lower side, and FIG. 7C is a sectional view in the same cross section as FIG. FIG. 7D is an end view of a surface passing through the center of the adjacent leg portion 22c (that is, a surface obtained by rotating the cross section of FIG. 7C by 45 degrees about an axis passing through the center of the base 22a). 8A to 8B show the nozzle 23, FIG. 8A is a perspective view seen from above, and FIG. 8B is a plan view. FIG. 3 is a sectional view of the cap 2 in the same section as FIG. 2 (the cover 24 is not shown). It is sectional drawing which shows the deformation | transformation state of the valve body 21 when a small compressive force is added to the container. It is sectional drawing which shows the deformation | transformation state of the valve body 21 when big compressive force is added to the container. The nozzle 23 of the lamination peeling container 1 which concerns on 2nd Embodiment of this invention is shown, FIG. 12A is a perspective view, FIG. 12B is a top view, FIG. 12C is BB sectional drawing in FIG. The nozzle 23 of the lamination peeling container 1 which concerns on 3rd Embodiment of this invention is shown, FIG. 13A is a perspective view, FIG. 13B is a top view, FIG. The nozzle 23 of the lamination peeling container 1 which concerns on 4th Embodiment of this invention is shown, FIG. 14A is a perspective view, FIG. 14B is a top view, FIG. 14C is CC sectional drawing in FIG. FIG. 15A shows a state in which the contents 25 are discharged from the delamination container 1 equipped with the nozzle 23 of the third embodiment, and FIG. 15B shows the contents from the delamination container 1 equipped with the nozzle 23 of the fourth embodiment. A state in which 25 is discharged is shown.

  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. In the following description, the terms “upper” and “lower” mean “upper / lower” in a state where the container body 3 is erected as shown in FIG.

1. First embodiment 1-1. Overall Configuration As shown in FIGS. 1 and 2A, the delamination container 1 according to the first embodiment of the present invention includes a cap 2, a container body 3, and a valve member 5. The container body 3 includes a storage portion 7 that stores the contents, and a mouth portion 9 that discharges the contents from the storage portion 7. The cap 2 is attached to the mouth portion 9. The cap 2 may be a screw type or a stopper type. The mouth portion 9 is provided with an engaging portion 9a for mounting the cap 2. The contents are discharged from the opening end 9 b of the mouth portion 9.

  As shown in FIG. 2, the container body 3 includes an outer shell 12 and an inner bag 14 in the housing portion 7 and the mouth portion 9. As the content decreases, the inner bag 14 peels from the outer shell 12, so that the inner bag 14 moves away from the outer shell 12 and contracts.

  As shown in FIG. 2, the valve member 5 is inserted into an outside air introduction hole 15 formed in the housing portion 7, and adjusts the flow of air between the space G between the outer shell 12 and the inner bag 14 and the outside. Is to do. As the configuration of the valve member 5, for example, the valve member 5 opens and closes the outside air introduction hole 15 by opening and closing the gap between the edge of the outside air introduction hole 15 and the valve member 5 by the movement of the valve member 5, The valve member 5 itself may be provided with a through-hole and a valve that can be opened and closed, and the outside air introduction hole 15 can be opened and closed by opening and closing the through-hole by the action of this valve. It should be noted that the valve member 5 is not provided and a filter is attached to the outside air introduction hole 15 to adjust the air in / out, or the outside air introduction hole 15 is simply closed with a finger or the like when discharging the contents. It can also be set as the structure to perform. Alternatively, a cap having a check valve provided in the mouth 9 with the outside air introduction hole 15 and communicating with the outside air introduction hole 15 may be used.

  Regardless of the configuration of the valve member 5, when the outer shell 12 is compressed, the outside air introduction hole 15 is closed so that the inner bag 14 can be compressed, and the compression force to the outer shell 12 is released. Then, the outside air is configured to be introduced into the space G.

  The accommodating part 7 is covered with a shrink film after the valve member 5 is attached. At this time, the valve member 5 is mounted in a valve member mounting recess 7 a provided in the housing portion 7 so that the valve member 5 does not interfere with the shrink film. Further, an air flow groove 7b extending from the valve member mounting recess 7a in the direction of the mouth 9 is provided so that the valve member mounting recess 7a is not sealed with the shrink film (see FIG. 1).

  Moreover, about the layer structure of the container main body 3, the outer shell 12 is formed thicker than the inner bag 14 so that a restoring property may become high. The outer shell 12 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 shell 12 may have a multilayer structure. The inner bag 14 is preferably composed of a plurality of layers. For example, an EVOH layer made of an ethylene-vinyl alcohol copolymer (EVOH) resin is used as a layer in contact with the outer layer, and a layer in contact with the contents is, for example, low density polyethylene, linear low density polyethylene, or high density polyethylene. An inner layer made of polyolefin such as polypropylene, ethylene-propylene copolymer, and a mixture thereof can be used. An adhesive layer is preferably used between the EVOH layer and the inner surface layer.

1-2. Detailed Configuration of Cap 2 Next, the cap 2 will be described with reference to FIGS. The cap 2 includes a valve body 21, an inner plug 22, a nozzle 23, and a cover 24.

<Valve 21>
As shown in FIG. 6, the valve body 21 includes a flow hole 21a, an annular portion 21b, a flange portion 21c, a flange 21d, and a connecting portion 21e. The valve body 21 is made of an elastomer such as silicone rubber, and is elastically deformed by the internal pressure of the contents.

  The annular portion 21b is provided around the circulation hole 21a. The bowl-shaped part 21c is a bowl-shaped part, and the flow hole 21a is provided in the bottom 21c1 of the bowl-shaped part 21c. The flange 21d is provided on the outer periphery of the valve body 21. A connecting portion 21e is provided between the flange 21d and the flange portion 21c. In a state where no force is applied to the valve body 21, as shown in FIG. 7C, the bottom 21c1 of the bowl-shaped portion 21c is flat.

<Inner plug 22>
As shown in FIG. 7, the inner plug 22 includes a pedestal 22a, a cylindrical portion 22b, a leg portion 22c, a valve body support portion 22d, and an engaging portion 22e. The inner plug 22 is formed of a material (polyolefin or the like) having higher rigidity than the valve body 21 and is not substantially deformed by the internal pressure due to the contents.

  The pedestal 22a has a columnar shape, has a diameter larger than that of the flow hole 21a, and the upper surface 22a1 is a curved surface convex upward. When the internal pressure due to the contents is not applied to the annular portion 21b, as shown in FIGS. 4 and 9, the circulation hole 21a is closed by the edge of the circulation hole 21a coming into contact with the pedestal 22a.

  As shown in FIG. 9, the valve body 21 is attached to the inner plug 22 so that the bottom 21c1 is pressed against the base 22a. In this state, when the bottom 21c1 is pressed against the pedestal 22a, the bottom 21c1 is elastically deformed so as to have a shape along the curved surface of the upper surface 22a1 of the pedestal 22a. The bottom 21c1 is elastically deformed in this manner, thereby improving the adhesion between the edge of the flow hole 21a and the upper surface 22a1. Further, since the upper surface 22a1 of the pedestal 22a is a curved surface, the upper surface 22a1 slightly enters the flow hole 21a, thereby further increasing the degree of adhesion between the edge of the flow hole 21a and the pedestal 22a.

  A leg portion 22c is provided between the cylindrical portion 22b and the base 22a. In the present embodiment, a plurality of (four in the present embodiment) leg portions 22c are provided at regular intervals (90-degree intervals in the present embodiment). The base 22a is supported by the leg 22c. The pedestal 22a is provided at a position coaxial with the cylindrical portion 22b, and the leg portion 22c is provided so as to connect the lower end of the cylindrical portion 22b and the lower portion of the pedestal 22a. The contents can be distributed through the gap 22f between the adjacent leg portions 22c. The internal pressure due to the contents is applied to the annular portion 21b through the gap 22f.

  A valve body support portion 22d is provided on the inner peripheral surface of the cylindrical portion 22b. The flange 21d is supported on the valve body support 22d. The valve body support portion 22d has an inclined surface that decreases toward the radially outer side (away from the opening end 9b). As for the flange 21d of the valve body 21, the surface which opposes the valve body support part 22d becomes an inclined surface which inclines similarly to the valve body support part 22d. With such a configuration, the valve body 21 is stably supported by the valve body support portion 22d.

  An engaging portion 22e is provided on the outer peripheral surface of the cylindrical portion 22b. The engaging portion 22 e is an annular protrusion and is used for engaging the inner plug 22 with the nozzle 23.

<Nozzle 23>
As shown in FIGS. 5A and 8, the nozzle 23 includes an insertion tube portion 23a, a flange 23b, a discharge tube portion 23c, a locking tube portion 23d, a regulating wall 23e, a discharge port 23f, and a connecting wall 23g. And an engaging portion 23h and a flow hole 23i.

  The insertion cylinder part 23 a is inserted into the mouth part 9. The flange 23 b is provided on the outer peripheral surface of the insertion tube portion 23 a and is in contact with the opening end 9 b of the mouth portion 9. The inner plug 22 is disposed in the insertion tube portion 23a. An engaging portion 23h is provided on the inner peripheral surface of the insertion tube portion 23a. The engaging part 23h is configured by an annular protrusion. The inner plug 22 is supported by the nozzle 23 by engaging the engaging portion 22e of the inner plug 22 with the engaging portion 23h.

  The discharge cylinder part 23c is connected to the insertion cylinder part 23a through the connection wall 23g. The contents are discharged through the discharge cylinder portion 23c. The regulation wall 23e is provided in the discharge cylinder part 23c, and the momentum of discharge of the contents is reduced by the regulation wall 23e. The restriction wall 23e is provided so as to protrude from the inner peripheral surface of the discharge cylinder portion 23c. The regulating wall 23e has an inclined surface 23e1, and the inclined surface 23e1 is inclined so as to approach the discharge port 23f as the distance from the inner peripheral surface of the discharge cylinder portion 23c increases. As shown in FIG. 8B, the restriction wall 23e is provided so as to overlap the flow hole 21a of the valve body 21 in plan view. In this specification, “in a plan view” can be rephrased as “in a plan view”, and in another expression, as “when viewed in the direction in which the central axis of the mouth 9 extends”. Can do. As shown in FIG. 8, the regulation wall 23e is provided so as to have an arc portion 23e2 concentric with the flow hole 21a. For this reason, the flow hole 23i between the inner surface of the discharge cylinder part 23c and the control wall 23e is fan-shaped.

  The locking cylinder part 23d is provided inside the insertion cylinder part 23a. A cylindrical portion 22b of the inner plug 22 is disposed between the insertion cylindrical portion 23a and the locking cylindrical portion 23d. The locking cylinder portion 23d is configured to lock the opening end 9b side of the valve body 21. The distal end 23d1 of the locking cylinder portion 23d is an inclined surface that increases toward the outside in the radial direction. In the flange 21d, the surface facing the tip 23d1 is an inclined surface that is inclined in the same manner as the tip 23d1. In such a configuration, the distance between the members sandwiching the flange 21d (the valve body support portion 22d and the tip 23d1) is narrowed inward in the radial direction, so that the valve body 21 is located between the valve body support portion 22d and the tip 23d1. It is supported stably.

<Cover 24>
As shown in FIG. 5A, the cover 24 includes a cylindrical portion 24a, an upper wall 24b, an opening portion 24c, and an engaging portion 24d.

  The engaging portion 24d is provided on the inner peripheral surface of the cylindrical portion 24a. The cover 24 is attached to the mouth portion 9 by engaging the engaging portion 24 d with the engaging portion 9 a of the mouth portion 9. The upper wall 24b is provided on the upper side of the cylindrical portion 24a. The nozzle 23 is fixed between the cover 24 and the container body 3 by sandwiching the flange 23b between the upper wall 24b and the open end 9b. The opening 24c is provided in the upper wall 24b. The discharge cylinder 23c is provided so as to protrude from the cover 24 through the opening 24c.

1-3. Next, the operation of the cap 2 according to this embodiment will be described.

  When no external force is applied to the accommodating portion 7, the internal pressure due to the contents is not applied to the annular portion 21b. Therefore, as shown in FIG. 9, the flow hole 21a is blocked by the edge of the flow hole 21a coming into contact with the pedestal 22a. Is done.

  When compressive force is applied to the accommodating portion 7, the internal pressure due to the contents is applied to the annular portion 21b, whereby the valve body 21 is elastically deformed, whereby the edge of the flow hole 21a is separated from the pedestal 22a and the flow hole 21a is opened.

  When the compressive force is small, the valve body 21 is elastically deformed so that the bottom 21c1 of the bowl-shaped portion 21c is lifted as shown in FIG. Even at this time, the edge of the flow hole 21a is separated from the base 22a and the flow hole 21a is opened. Thus, the check valve constituted by the valve body 21 and the pedestal 22a is opened only by slightly separating the valve body 21 from the pedestal 22a, so that the contents can be discharged only by lightly compressing the container. .

  When a larger compressive force is applied to the accommodating portion 7, the valve body 21 is elastically deformed so that the hook-shaped portion 21c is inverted as shown in FIG. The restriction wall 23e is provided at a position where the hook-shaped portion 21c does not contact even when the hook-shaped portion 21c is deformed in this way. For this reason, the deformation | transformation of the hook-shaped part 21c is not prevented by the control wall 23e.

  When the flow hole 21a is opened, the contents flow out toward the discharge cylinder portion 23c through the flow hole 21a, and are discharged from the discharge port 23f after the momentum is reduced by the restriction wall 23e.

  When the compressive force on the accommodating portion 7 is removed, the flange portion 21c is restored to its original shape by the restoring force of the valve body 21, and the edge of the flow hole 21a comes into contact with the pedestal 22a so that the flow hole 21a is again formed. Is blocked. The hook-shaped portion 21c returns to its original shape with a slight delay from the time when the compressive force is removed. During this time difference, the solid matter is removed from the pedestal 22a by the flow of the liquid, so that the possibility of the solid matter being caught between the edge of the flow hole 21a and the pedestal 22a is reduced.

1-4. Contrast with the prior art In the slit valve of Patent Document 1, in the case of a large size solid material, it is easy to get caught in the slit. Because it can be made large enough, it is difficult for large solids to get caught.

  Furthermore, in the slit valve of Patent Document 1, since the slit is provided over the entire thickness direction of the discharge valve, the opposing surface in the slit is per surface (contact between the surfaces). In the check valve having the configuration, the contact area between the edge of the flow hole 21a and the pedestal 22a can be easily reduced to close to the line contact (contact between lines). As the contact area between the edge of the flow hole 21a and the pedestal 22a is reduced, solids are less likely to be caught.

  Furthermore, in the slit valve of Patent Document 1, it is indispensable to machine the slit after the molding of the valve, and the manufacturing cost increases accordingly, but the valve body 21 of the present embodiment has a flow hole at the time of molding. Since it can be formed, it is not necessary to machine the blade after molding, and the manufacturing cost can be suppressed.

  In addition, in a check valve composed of an annular valve seat and a circular valve body provided at the center thereof, when pressure from the contents is applied to the valve body in a biased manner, the valve body may be inclined. Then, the discharge of the contents may not be stable, but in the check valve having the configuration of the present embodiment, the internal pressure due to the contents is applied to the annular portion 21b and elastically deforms so that the entire annular portion 21b is lifted. Therefore, the valve body 21 is not easily inclined and the discharge of the contents is easily stabilized.

2. Second Embodiment A second embodiment of the present invention will be described with reference to FIG. The present embodiment is similar to the first embodiment, and the main difference is the configuration of the discharge port 23f of the nozzle 23 and the discharge tube portion 23c. Hereinafter, the difference will be mainly described.

  In the present embodiment, the nozzle 23 is eccentric in the position of the discharge port 23f. For this reason, as shown in FIG. 12B, the discharge port 23f and the flow hole 21a are not concentric in a plan view. And the discharge cylinder part 23c is provided with the control wall 23c1 which inclines so that the diameter of the discharge cylinder part 23c may be reduced as it approaches the discharge port 23f. The regulation wall 23c1 overlaps the flow hole 21a in a plan view, and reduces the momentum of discharge of the contents, like the regulation wall 23e of the first embodiment.

3. Third Embodiment A third embodiment of the present invention will be described with reference to FIG. The present embodiment is similar to the first embodiment, and the main difference is the configuration of the discharge port 23f of the nozzle 23 and the discharge tube portion 23c. Hereinafter, the difference will be mainly described.

  In the present embodiment, the nozzle 23 is not eccentric in the position of the discharge port 23f. For this reason, as shown in FIG. 13B, the discharge port 23f and the flow hole 21a are concentric in a plan view. The discharge cylinder portion 23c includes a reduced diameter portion 23c2 that is reduced in diameter as it approaches the discharge port 23f, and a constant diameter portion 23c3 that does not change in diameter as it approaches the discharge port 23f.

  In the nozzle 23, a plurality of (three in this embodiment) arms 23j projecting from the inner surface of the nozzle 23 are provided. The plurality of arms 23j are provided at equal intervals in the circumferential direction. Each arm 23j is provided so as to protrude obliquely from the vicinity of the boundary between the reduced diameter portion 23c2 and the constant diameter portion 23c3 toward the inside of the container.

  The restriction wall 23k is supported by a plurality of arms 23j. As shown in FIG. 13B, the restriction wall 23k is concentrically overlapped with the flow hole 21a in a plan view, and reduces the momentum of discharge of the contents, like the restriction wall 23e of the first embodiment. The contents are discharged through the flow hole 23l between the adjacent arms 23j. In the present embodiment, a plurality of flow holes 23l are provided at equal intervals in the circumferential direction.

  In the present embodiment, the regulating wall 23k is concentric with the flow hole 21a, and the plurality of flow holes 23l are provided at equal intervals in the circumferential direction, so that the content can be obtained without worrying about the circumferential direction of the container. An object can be discharged. Thus, since the nozzle 23 of this embodiment does not have the directionality of the circumferential direction, when mounting an upper cover, it is not necessary to position an upper cover with respect to the nozzle 23 in the circumferential direction. For this reason, there is no problem even if the upper lid is a screw type.

  Further, since the restriction wall 23k is provided at a position away from the discharge port 23f, even if the contents remain on the restriction wall 23k, it is difficult to visually recognize from the outside.

  The state which discharges the content 25 from the lamination peeling container 1 equipped with the nozzle 23 of this embodiment is shown in FIG. 15A. The contents 25 flow around the restriction wall 23k after colliding with the restriction wall 23k, and are discharged from the discharge port 23f. In the present embodiment, since the discharge port 23f is not eccentric and the diameter of the discharge port 23f is large, the flow of the contents 25 passing through the discharge port 23f is fast, and the space 23m between the discharge port 23f and the circulation hole 21a. Is normally not filled with the contents 25. For this reason, there is a problem that a phenomenon in which outside air enters the inner bag 14 through the flow hole 21a after discharge (hereinafter referred to as “air bag”) easily occurs. Such a problem is solved by the fourth embodiment.

4). Fourth Embodiment A fourth embodiment of the present invention will be described with reference to FIG. The present embodiment is similar to the first embodiment, and the main difference is the configuration of the discharge port 23f of the nozzle 23 and the discharge tube portion 23c. Hereinafter, the difference will be mainly described.

  In the present embodiment, the discharge cylinder portion 23c of the nozzle 23 includes a main body cylinder portion 23c4 and a reduced diameter cylinder portion 23c5. The reduced diameter cylindrical portion 23c5 is cylindrical and has a smaller cross-sectional area than the main body cylindrical portion 23c4. The reduced diameter cylindrical portion 23c5 is provided at an eccentric position on the top surface portion 23c6 of the main body cylindrical portion 23c4, and communicates with the main body cylindrical portion 23c4. A discharge port 23f is provided at the tip of the reduced diameter cylindrical portion 23c5. As shown in FIG. 14B, the discharge port 23f is arranged so as not to overlap the flow hole 21a in plan view.

  Since the top surface portion 23c6 overlaps the flow hole 21a in a plan view, the contents that have passed through the flow hole 21a collide with the inner surface of the top surface portion 23c6, and the ejection momentum is reduced. For this reason, the top surface portion 23c6 functions as a restriction wall. Further, since the inner surface of the top surface portion 23c6 is curved so as to be convex upward, the contents colliding with the inner surface of the top surface portion 23c6 are not easily guided to the discharge port 23f. For this reason, as shown in FIG. 15B, the space 23m between the discharge port 23f and the flow hole 21a is easily filled with the contents 25.

  Further, since the discharge port 23f of the present embodiment has a smaller diameter than that of the above-described embodiment, the flow of the contents 25 passing through the discharge port 23f is slow. For this reason, the space 23m is more easily filled with the contents 25. When the opening area of the flow hole 21a in plan view is S1, and the opening area of the discharge port 23f is S2, it is preferable that S2 / S1 ≦ 5. S2 / S1 is, for example, 0.2 to 5, and specifically, for example, 0.2, 0.5, 1, 1.5, 2, 2.5, 3, 3.5, 4, 4,. 5, 5 and may be within a range between any two of the numerical values exemplified here.

  Thus, in this embodiment, the space 23m is easily filled with the contents 25, and the airbag can be suppressed by filling the space 23m with the contents 25.

5. Other Embodiments The present invention can also be implemented in the following modes.
The cap 2 of the present invention can be used for a container other than the delamination container 1, for example, a single-layer container, and the entire container contracts as the contents are discharged.

DESCRIPTION OF SYMBOLS 1: Lamination peeling container 2: Cap 3: Container main body 5: Valve member 7: Accommodating part 7a: Valve member attachment recessed part 7b: Air circulation groove 9: Mouth part 9a: Engaging part 9b: Open end 12: Outer shell 14: Inner bag 15: outside air introduction hole 21: valve body 21a: flow hole 21b: annular portion 21c: bowl-shaped portion 21c1: bottom 21d: flange 21e: connecting portion 22: inner plug 22a: pedestal 22a1: upper surface 22b: tube portion 22c: Leg part 22d: Valve body support part 22e: Engagement part 22f: Clearance 23: Nozzle 23a: Insertion cylinder part 23b: Flange 23c: Discharge cylinder part 23c1: Restriction wall 23c2: Reduced diameter part 23c3: Constant diameter part 23c4: Main body cylinder Part 23c5: Reduced diameter cylindrical part 23c6: Top surface part 23d: Locking cylindrical part 23d1: Tip 23e: Restriction wall 23e1: Inclined surface 23e2: Arc part 23f: Discharge port 23 : Connecting wall 23h: Engaging portion 23i: Flow hole 23j: Arm 23k: Restriction wall 23l: Flow hole 23m: Space 24: Cover 24a: Tube portion 24b: Upper wall 24c: Opening portion 24d: Engaging portion 25: Contents G: Space

Claims (9)

A cap attached to the mouth of a container for containing contents,
It has a disc and a pedestal,
The valve body includes a flow hole,
When the internal pressure due to the contents is not applied to the annular part around the circulation hole, the valve body is closed by the edge of the circulation hole coming into contact with the pedestal, and the annular part around the circulation hole A cap configured such that when the internal pressure is applied, the valve body is elastically deformed so that an edge of the flow hole is separated from the base and the flow hole is opened. The cap according to claim 1,
The valve body includes a bowl-shaped portion,
The flow hole is provided at the bottom of the bowl-shaped part,
The said valve body is a cap comprised so that the said hook-shaped part may be elastically deformed so that the said internal pressure may be reversed, when the said internal pressure is added to the cyclic | annular part around the said circulation hole. The cap according to claim 1 or 2,
The pedestal is provided in an inner plug inserted into the mouth,
The inner plug includes a tube portion and a leg portion,
The leg portion is provided between the tube portion and the pedestal,
The said base is a cap provided in the said leg part in the shape of a support | pillar. The cap according to any one of claims 1 to 3,
The pedestal is provided in an inner plug inserted into the mouth,
The inner plug includes a cylindrical portion,
A valve body support portion is provided on the inner peripheral surface of the cylindrical portion,
The valve body includes a flange,
A cap in which the flange is supported on the valve body support. A cap according to any one of claims 1 to 4,
With a nozzle,
The nozzle has a discharge cylinder portion,
The content is discharged through a discharge port provided in the discharge cylinder portion,
A cap, wherein the discharge cylinder part is provided with a restriction wall that reduces the discharge momentum of the contents. The cap according to claim 5,
The cap is supported by a plurality of arms protruding from the inner surface of the nozzle. The cap according to claim 5 or claim 6,
The said discharge outlet is a cap arrange | positioned so that it may not overlap with the said flow hole by planar view. A cap according to any one of claims 5 to 7,
When the opening area of the flow hole in plan view is S1, and the opening area of the discharge port is S2,
S2 / S1 ≦ 5. A delamination container comprising a container body and a cap,
The container body has an outer shell and an inner bag, and is configured such that the inner bag contracts as the content decreases.
The said peeling cap is a lamination peeling container which is a cap as described in any one of Claims 1-8.