TWI784106B - Caps and Laminated Stripping Containers - Google Patents

Abstract

Provided is a cap having a check valve capable of smooth opening and closing.

According to the present invention, there is provided a cap that is attached to the mouth of a container that accommodates contents, wherein the cap includes a valve body and a seat, the valve body has a flow hole, and the valve body is configured to come from When the internal pressure of the built-in is not applied to the annular portion around the flow hole, the edge of the flow hole abuts against the seat to close the flow hole, and the internal pressure is applied to the flow hole. When the annular portion around the hole is closed, the valve body is elastically deformed so that the edge of the flow hole leaves the seat to open the flow hole.

Description

Caps and Laminated Stripping Containers

The present invention relates to a cap provided with a non-return valve, and a layered peel-off container provided with the cap.

Patent Document 1 discloses a cap having a slit valve provided with a slit in the discharge valve.

[Prior Art Literature]

【Patent Literature】

[Patent Document 1] Japanese Patent Laid-Open No. 2013-95455

The rip valve of Patent Document 1 has a problem that the rip valve does not open when the container is slightly compressed, making it difficult to discharge the contents.

The present invention has been made in view of such circumstances, and an object of the present invention is to provide a cap having a check valve that can be smoothly opened and closed.

According to the present invention, there is provided a cap that is attached to the mouth of a container that accommodates contents, wherein the cap includes a valve body and a seat, the valve body has a flow hole, and the valve body is configured to come from When the internal pressure of the built-in is not applied to the annular portion around the flow hole, the edge of the flow hole abuts against the seat to close the flow hole, and the internal pressure is applied to the flow hole. The annular portion around the hole, the valve body is elastically deformed, so that the edge of the flow hole leaves the seat to open the flow hole.

In the rip valve disclosed in Patent Document 1, in order to open the rip provided in the discharge valve, the discharge valve needs to be deformed considerably, and therefore, the contents cannot be discharged by only lightly compressing the container.

On the other hand, in the cap of the present invention, the check valve is constituted by the valve body of the above-mentioned structure, that is, the pedestal. In such a check valve, the valve body is slightly separated from the pedestal to open the check valve. And, the flow hole of the valve body contacts the pedestal, thereby closing the check valve. Therefore, the opening and closing operation of the check valve is smooth.

Various embodiments of the present invention are illustrated below. The embodiments shown below can be combined with each other.

Preferably, in the cap, the valve body has a bowl-shaped portion, the flow hole is provided at the bottom of the bowl-shaped portion, and the valve body is configured such that when the internal pressure is applied to the surrounding of the flow hole, When the annular portion is formed, the bowl is elastically deformed in a reversed manner.

Preferably, in the cap, the pedestal is provided on an inner plug inserted into the mouth, and the inner plug has a cylindrical portion and a leg portion, The leg portion is provided between the cylindrical portion and the pedestal, and the pedestal is provided on the leg portion in a pillar shape.

Preferably, in the cap, the pedestal is provided on an inner plug inserted into the mouth, the inner plug has a cylinder, the inner peripheral surface of the cylinder is provided with a valve body support portion, and the valve body has a method. The flange is supported on the valve body supporting part.

Preferably, the cap is equipped with a nozzle, the nozzle has a discharge cylinder, the internal content is discharged through a discharge port provided in the discharge cylinder, and the discharge cylinder is provided with a device for reducing the discharge of the internal content. The regulating wall of the flow potential.

Preferably, in the cap, the adjustment wall is supported by a plurality of arms protruding from the inner surface of the nozzle.

Preferably, a laminated peelable container is provided with a container main body including an outer shell and an inner bag and the inner bag shrinks as contents decrease, and a cap as described above.

1‧‧‧Laminated peel-off container

2‧‧‧Block

3‧‧‧Container body

5‧‧‧Valve components

7‧‧‧Accommodating Department

7a‧‧‧Valve component mounting recess

7b‧‧‧Air circulation slot

9‧‧‧mouth

9a‧‧‧Joint Department

9b‧‧‧open end

12‧‧‧Shell

14‧‧‧inner bag

15‧‧‧Outside air introduction hole

21‧‧‧Valve body

21a‧‧‧flow hole

21b‧‧‧annular part

21c‧‧‧Bowl

21c1‧‧‧bottom

21d‧‧‧Flange

21e‧‧‧Connection

22‧‧‧Nese

22a‧‧‧pedestal

22a1‧‧‧upper surface

22b‧‧‧barrel

22c‧‧‧feet

22d‧‧‧Valve body support

22e‧‧‧Joint Department

22f‧‧‧Gap

23‧‧‧Nozzle

23a‧‧‧Insert barrel

23b‧‧‧Flange

23c‧‧‧Discharge cylinder

23c1‧‧‧Adjustment wall

23c2‧‧‧Reduced diameter part

23c3‧‧‧Constant diameter department

23c4‧‧‧Main barrel

23c5‧‧‧Reduced diameter barrel

23c6‧‧‧top face

23d‧‧‧locking cylinder

23d1‧‧‧Frontend

23e‧‧‧Adjustment wall

23e1‧‧‧inclined surface

23e2‧‧‧arc part

23f‧‧‧Outlet

23g‧‧‧connecting wall

23h‧‧‧Joint Department

23i‧‧‧flow hole

23j‧‧‧arm

23k‧‧‧Adjustment wall

23l‧‧‧flow hole

23m‧‧‧space

24‧‧‧Cover

24a‧‧‧barrel

24b‧‧‧upper wall

24c‧‧‧opening

24d‧‧‧Joint Department

25‧‧‧Built-in objects

G‧‧‧Space

Fig. 1 is a front view of a laminated peel container 1 according to a first embodiment of the present invention.

Fig. 2 is a sectional view of A-A in Fig. 1 .

FIG. 3 is a perspective view of the cap 2 in FIG. 1 .

FIG. 4 is a perspective view of the cap 2 in the same section as in FIG. 2 .

In FIG. 5 , FIG. 5A is a perspective view of the nozzle 23 and the cover 24 pulled out from FIG. 4 , and FIG. 5B is a perspective view of the valve body 21 and the inner plug 22 pulled out from FIG. 4 .

In FIG. 6, FIGS. 6A to 6C show the valve body 21, FIG. 6A is a perspective view viewed from the upper side, FIG. 6B is a perspective view viewed from the lower side, and FIG.

In Fig. 7, Fig. 7A ~ Fig. 7D represent inner plug 22, Fig. 7A is a perspective view viewed from the upper side, Fig. 7B is a perspective view viewed from the lower side, Fig. 7C is a sectional view of the same section as Fig. 2 , Fig. 7D is a sectional view through A sectional view of an intermediate surface of adjacent leg portions 22c (that is, a surface obtained by rotating the section in FIG. 7C by 45 degrees about an axis passing through the center of the base 22a).

In FIG. 8 , FIGS. 8A to 8B show the nozzle 23 , and FIG. 8A is a perspective view seen from the upper side, and FIG. 8B is a plan view.

FIG. 9 is a cross-sectional view of the cap 2 in the same cross-section as that in FIG. 2 (the cover 24 is not shown).

Fig. 10 is a cross-sectional view showing a deformed state of the valve body 21 when a small compressive force is applied to the container.

FIG. 11 is a cross-sectional view showing a deformed state of the valve body 21 when a large compressive force is applied to the container.

FIG. 12 shows nozzle 23 of lamination and peeling container 1 according to the second embodiment of the present invention, FIG. 12A is a perspective view, FIG. 12B is a plan view, and FIG. 12C is a B-B sectional view in FIG. 12B .

13 shows a nozzle 23 of the lamination and peeling container 1 according to the third embodiment of the present invention. FIG. 13A is a perspective view, FIG. 13B is a plan view, and FIG. 13C is a partially cutaway perspective view.

14 shows a nozzle 23 of the lamination and peeling container 1 according to the fourth embodiment of the present invention, FIG. 14A is a perspective view, FIG. 14B is a plan view, and FIG. 14C is a C-C sectional view in FIG. 14B .

In FIG. 15 , FIG. 15A shows a state where the contents 25 are discharged from the lamination and peeling container 1 equipped with the nozzle 23 of the third embodiment, and FIG. 15B shows the state of discharging the contents from the lamination and peeling container 1 equipped with the nozzle 23 of the fourth embodiment. 25 status.

Embodiments of the present invention will be described below. Various characteristic items shown in the embodiments shown below may be combined with each other. Moreover, each feature independently establishes the invention. In the following description, up and down mean up and down in a state where the container main body 3 is erected as shown in FIG. 1 .

1. first embodiment

1-1． the whole frame

As shown in FIGS. 1 and 2A , a lamination and peeling 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 main body 3 has an accommodating portion 7 for accommodating the contents, and a mouth portion 9 for discharging the contents from the accommodating portion 7 . The cap 2 is attached to the mouth 9 . The cap 2 can be screw-fitted or gland-type installed. The mouth portion 9 is provided with an engaging portion 9 a for attaching the cap 2 . The contents are discharged from the opening end 9 b of the mouth 9 .

As shown in FIG. 2 , the container main body 3 includes an outer case 12 and an inner bag 14 in the housing portion 7 and the mouth portion 9 . As the content decreases, the inner bag 14 is peeled off from the outer case 12, so that the inner bag 14 is separated from the outer case 12 and shrinks.

As shown in FIG. 2 , the valve member 5 is inserted into the outside air introduction hole 15 formed in the housing portion 7 to regulate the air in and out between the space G between the outer case 12 and the inner bag 14 and the outside. As the mechanism of the valve member 5, for example, the movement of the valve member 5 can open and close the edge of the external air introduction hole 15 and the The gap between the valve members 5 enables the valve member 5 to open and close the external air introduction hole 15, or the valve member 5 itself is provided with a through hole and an openable valve, and the through hole is opened and closed by the movement of the valve, thereby A structure for opening and closing the outside air introduction hole 15. It should be noted that the valve member 5 may not be provided, and a filter member may be attached to the external air introduction hole 15 to adjust the air in and out structure, or the external air introduction hole 15 may be closed only by using a finger light when discharging the built-in contents. Regulated structure. In addition, the external air introduction hole 15 may be provided in the mouth portion 9, and a cap having a check valve communicating with the external air introduction hole 15 may be used.

In the case of any of the above-mentioned structures, the valve member 5 is all configured to close the external air introduction hole 15 and compress the inner bag 14 when the casing 12 is compressed, and if the compressive force to the casing 12 is released, the external air will Import into space G.

After mounting the valve part 5, the receptacle 7 is covered with a shrink film. At this time, the valve member 5 is attached to the attachment recessed portion 7 a provided in the housing portion 7 so that the valve member 5 does not interfere with the shrink film. Furthermore, an air flow groove 7b extending from the valve member mounting recess 7a toward the mouth portion 9 is provided so that the valve member mounting recess 7a is not sealed by the shrink film. (Refer to Figure 1).

Also, with regard to the layer structure of the container main body 3, the outer shell 12 is formed to be thicker than the inner bag so as to have high resilience. The housing 12 is composed of, for example, low-density polyethylene, linear low-density polyethylene, high-density polyethylene, polypropylene, ethylene-propylene copolymers, and mixtures thereof. The shell 12 can also be a multi-layer structure. The inner bag 14 is preferably a multilayer structure. For example, an EVOH layer made of ethylene-vinyl alcohol copolymer (EVOH) resin is used for the layer in contact with the outer layer, and an EVOH layer is used for the layer in contact with the built-in For example, the inner surface layer is composed of polyolefins such as low-density polyethylene, linear low-density polyethylene, high-density polyethylene, polypropylene, ethylene-propylene copolymers, and mixtures thereof. Furthermore, it is preferable to use an adhesive layer between the EVOH layer and the inner surface layer.

1-2． The specific structure of the cap 2

Next, the cap 2 will be described using FIGS. 2 to 11 . The cap 2 includes a valve body 21 , an inner plug 22 , a nozzle 23 , and a cover 24 .

<Valve Body 21>

As shown in FIG. 6 , the valve body 21 includes a flow hole 21a, an annular portion 21b, a bowl portion 21c, a flange 21d, and a connecting portion 21e. The valve body 21 is formed of an elastic body such as silicon rubber, and is elastically deformed by internal pressure from a built-in object.

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 part 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 bowl 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 21c is flat.

<Inner 22>

As shown in FIG. 7 , the inner plug 22 includes a seat 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 made of a material (such as polyolefin) that is more rigid than the valve body 21, and is substantially not deformed by the internal pressure of the built-in product.

The pedestal 22a is pillar-shaped and has a larger diameter than the flow hole 21a, and the upper surface 22a1 is a curved surface protruding upward. When the internal pressure from the built-in material is not applied to the annular portion 21b, as shown in FIGS. 4 and 9 , the edge of the flow hole 21a comes into contact with the seat 22a, thereby closing the flow hole 21a.

As shown in FIG. 9 , the valve body 21 is attached to the inner plug 22 so that the bottom portion 21c1 is pressed against the seat 22a. In this state, when the bottom 21c1 is pressed against the pedestal 22a, the bottom 21c1 is elastically deformed into a shape along the curved surface of the upper surface 22a1 of the pedestal 22a. By elastically deforming the bottom portion 21c1 in this way, the adhesiveness between the edge of the flow hole 21a and the upper surface 22a1 can be improved. Furthermore, 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 improving the closeness between the edge of the flow hole 21a and the pedestal 22a.

The leg part 22c is provided between the cylindrical part 22b and the base 22a. In the present embodiment, a plurality of (four in the present embodiment) leg portions 22c are provided at equal intervals (at 90-degree intervals in the present embodiment). The pedestal 22a is supported by the leg part 22c. The pedestal 22a is provided at a position coaxial with the cylindrical part 22b, and the leg part 22c is provided so that the lower end of the cylindrical part 22b may connect with the lower part of the pedestal 22a. It is comprised so that a built-in substance may flow through the clearance gap 22f between adjacent leg parts 22c. Internal pressure from the built-in material passing through the gap 22f is applied to the annular portion 21b.

The inner peripheral surface of the cylindrical portion 22b is provided with a valve body support portion 22d. The flange 21d is supported on the valve body support portion 22d. The valve body support portion 22d is an inclined surface that becomes lower (separated from the opening end 9b) radially outward. The surface of the flange 21d of the valve body 21 that faces the valve body support portion 22d is the same as the valve body support portion 22d. Like an inclined inclined surface. With such a structure, the valve body 21 is stably supported by the valve body support part 22d.

An engaging portion 22e is provided on the outer peripheral surface of the cylindrical portion 22b. The engaging portion 22e is an annular protrusion 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 cylinder portion 23a, a flange 23b, a discharge cylinder portion 23c, a locking cylinder portion 23d, an adjustment wall 23e, a discharge port 23f, a connecting wall 23g, an engaging portion 23h, and a flow channel. hole 23i.

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

The discharge cylinder part 23c and the insertion cylinder part 23a are connected by the connection wall 23g. The contents are discharged through the discharge cylinder portion 23c. The adjustment wall 23e is provided in the discharge cylinder part 23c, and the flow force of discharging the contents is reduced by the adjustment wall 23e. The adjustment wall 23e is provided so as to protrude from the inner peripheral surface of the discharge cylinder part 23c. The adjustment wall 23e has an inclined surface 23e1 inclined so as to approach the discharge port 23f as it moves away from the inner peripheral surface of the discharge cylinder portion 23c. As shown in FIG. 8B , the adjustment wall 23 e is provided so as to overlap the flow hole 21 a of the valve body 21 in plan view. It should be noted that in this specification, "plane view" can be understood as The meaning of "in a plan view" may also be referred to as "when viewed from the direction in which the central axis of the mouth 9 extends". As shown in FIG. 8, the adjustment wall 23e is provided to have an arc portion 23e2 concentric with the flow hole 21a. Therefore, the flow hole 23i between the inner surface of the discharge cylinder portion 23c and the adjustment wall 23e has a fan shape.

The locking cylinder part 23d is provided inside the insertion cylinder part 23a. The cylindrical part 22b of the inner plug 22 is arrange|positioned between the insertion cylindrical part 23a and the locking cylindrical part 23d. The locking cylindrical portion 23 d is configured to lock the opening end 9 b side of the valve body 21 . The front end 23d1 of the locking cylindrical portion 23d is an inclined surface that becomes higher radially outward. The flange 21d is an inclined surface that faces the front end 23d1 and is inclined similarly to the front end 23d1. With such a structure, since the distance between the members sandwiching the flange 21d (valve body support portion 22d, front end 23d1) becomes narrower inward in the radial direction, the valve body 21 is stably supported between the valve body support portion 22d and the front end. Between 23d1.

<cover 24>

As shown in FIG. 5A, the cover 24 is provided with the cylindrical part 24a, the upper wall 24b, the opening part 24c, and the engaging part 24d.

The engaging portion 24d is provided on the inner peripheral surface of the cylindrical portion 24a. The engaging part 24d is engaged with the engaging part 9a of the mouth part 9, and the cover 24 is attached to the mouth part 9. As shown in FIG. 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 main body 3 by sandwiching the flange 23b between the upper wall 24b and the open end 9b. The opening part 24c is provided in the upper wall 24b. The discharge cylinder part 23c is provided so that it may protrude from the cover 24 through the opening part 24c.

1-3． Block 2 action

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 from the contents is not applied to the annular portion 21b. Therefore, as shown in FIG.

When a compressive force is applied to the housing portion 7, internal pressure from the contents is applied to the annular portion 21b to elastically deform the valve body 21, and the edge of the flow hole 21a is separated from the seat 22a to open the flow hole 21a.

When the compressive force is small, as shown in FIG. 10 , the valve body 21 elastically deforms so that the bottom 21c1 of the bowl-shaped portion 21c floats. At this time, the edge of the flow hole 21a is also separated from the base 22a to open the flow hole 21a. In this way, the check valve constituted by the valve body 21 and the seat 22a is opened even if the valve body 21 is slightly separated from the seat 22a, so that the contents can be discharged even when the container is slightly compressed.

When a larger compressive force is applied to the housing portion 7, as shown in FIG. 11 , the valve body 21 is elastically deformed so as to reverse the bowl-shaped portion 21c. The adjustment wall 23e is provided at a position where the bowl 21c does not come into contact even if the bowl 21c is thus deformed. Therefore, the adjustment wall 23e does not hinder the deformation of the bowl portion 21c.

When the flow hole 21a is opened, the contents flow through the flow hole 21a to the discharge cylinder portion 23c, and the adjusted wall 23e lowers the momentum and then is discharged from the discharge port 23f.

When the compressive force on the housing portion 7 is released, the bowl-shaped portion 21c returns to its original shape due to the restoring force of the valve body 21, and the edge of the flow hole 21a abuts against the seat 22a, thereby closing the flow hole 21a again. The bowl-shaped portion 21c returns to its original shape a little later than when the compressive force is released. Since the solid matter is removed from the pedestal 22a by the flow of the liquid passing through this time difference, the possibility of solid matter being caught between the edge of the flow hole 21a and the pedestal 22a is reduced.

1-4． Comparison with Existing Technology

The rip valve of Patent Document 1 is easy to be caught in the rip when a solid object is large in size, but in the check valve of this embodiment, since the distance between the edge of the flow hole 21a and the pedestal 22a is sufficiently large, even a large size Solid objects are also difficult to clamp.

In addition, in the rip valve of Patent Document 1, since the rip is provided so as to penetrate the entire thickness direction of the discharge valve, the opposing surfaces in the rip are in surface contact (surface-to-surface contact). The valve can be easily approached in line contact (contact between lines) by reducing the contact area between the edge of the flow hole 21a and the seat 22a. The smaller the contact area between the edge of the flow hole 21a and the seat 22a is, the harder it is for solid objects to be caught.

In addition, in the rip valve of Patent Document 1, after the molding of the valve, the rip needs to be tooled, so this process will increase the manufacturing cost, but since the valve body 21 of this embodiment can form a flow hole during molding, it is not necessary Tool processing after forming can reduce manufacturing costs.

In addition, the check valve composed of an annular valve seat and a circular valve body disposed in the middle may tilt the valve body or the discharge of the built-in material may be unstable when the pressure from the built-in material is applied to the valve body in a biased manner. However, in the check valve of this embodiment, the internal pressure from the built-in material is applied to the ring-shaped part 21b, and the ring-shaped part 21b is elastically deformed so that the whole of the ring-shaped part 21b is lifted, so it is difficult to incline the valve body 21, Easy and stable discharge of built-in contents.

2. 2nd embodiment

A second embodiment of the present invention will be described using FIG. 12 . This embodiment is similar to the first embodiment, and the difference in the structure of the discharge port 23f of the nozzle 23 and the discharge cylinder part 23c is a main point of difference. Hereinafter, the description will focus on the same point.

In the present embodiment, the position of the discharge port 23f is eccentric with respect to the nozzle 23 . Therefore, as shown in FIG. 12B , the discharge port 23 f is not concentric with the flow hole 21 a in planar view. Further, the discharge cylindrical portion 23c is provided with an adjustment wall 23c1 inclined so as to constrict the discharge cylindrical portion 23c as it approaches the discharge port 23f. The adjustment wall 23c1 overlaps the flow hole 21a in planar view, and reduces the flow force of discharge of the contents similarly to the adjustment wall 23e of the first embodiment.

3. third embodiment

A third embodiment of the present invention will be described using FIG. 13 . This embodiment is similar to the first embodiment, except that the structure of the discharge port 23f of the nozzle 23 and the discharge cylinder part 23c is mainly different. Hereinafter, the description will focus on the same point.

In the present embodiment, the position of the discharge port 23f is not eccentric in the nozzle 23 . Therefore, as shown in FIG. 13B , the discharge port 23f is concentric with the flow hole 21a in plan view. The discharge cylinder portion 23c includes a reduced diameter portion 23c2 that decreases 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.

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

The adjustment wall 23k is supported by a plurality of arm portions 23j. As shown in FIG. 13B , the adjustment wall 23k overlaps the flow hole 21a concentrically in a planar view, and reduces the flow force of discharge of the contents similarly to the adjustment wall 23e of the first embodiment. The contents are discharged through the flow hole 23l between the adjacent arm portions 23j. In the present embodiment, a plurality of flow holes 231 are provided at equal intervals in the circumferential direction.

In the present embodiment, since the adjustment wall 23k is concentric with the flow hole 21a and the flow holes 23l are provided at equal intervals in the circumferential direction, the contents can be discharged regardless of the circumferential orientation of the container. In this way, the nozzle 23 of the present embodiment has no directionality in the circumferential direction, and therefore, it is not necessary to position the nozzle 23 in the circumferential direction of the upper cap when attaching the upper cap. Therefore, there is no problem even if the upper cap is a screw-fitted cap.

And, since the adjustment wall 23k is provided at a position away from the discharge port 23f, even if the built-in It remains on the adjustment wall 23k and is difficult to see from the outside.

FIG. 15A shows a state in which the contents 25 are discharged from the lamination and peeling container 1 equipped with the nozzle 23 of the present embodiment. The contents 25 flow around the adjustment wall 23k after hitting the adjustment wall 23k and are discharged from the discharge port 23f. In this embodiment, the discharge port 23f is not eccentric, and the diameter of the discharge port 23f is large, so 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 flow hole 21a is usually not blocked. The built-in 25 is filled. Therefore, there is a problem that a phenomenon (hereinafter referred to as "backflow") that enters the inner bag 14 through the flow hole 21a after discharge is likely to occur. Such a problem is solved by the fourth embodiment.

4. 4th embodiment

A fourth embodiment of the present invention will be described using FIG. 14 . This embodiment is similar to the first embodiment, and the structural difference of the discharge port 23f of the nozzle 23 and the discharge cylinder part 23c is a main difference. Hereinafter, the description will focus on the same point.

In this embodiment, the discharge cylinder part 23c of the nozzle 23 is equipped with the main body cylinder part 23c4, and the diameter-reduced cylinder part 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. 23 f of discharge ports are provided in the front-end|tip of diameter-shrinking cylindrical part 23c5. As shown in FIG. 14B , the discharge port 23f is arranged so as not to overlap the flow hole 21a in planar view.

Since the top surface portion 23c6 overlaps the flow hole 21a in plan view, the flow passing through the flow hole 21a The built-in material collides against the inner surface of the top surface portion 23c6, reducing the flow potential of discharge. Therefore, the top surface portion 23c6 functions as an adjustment wall. And since the inner surface of the top surface part 23c6 is curved so that it may protrude upward, the built-in thing which collided with the inner surface of the top surface part 23c6 is hard to be guided to the discharge port 23f. Therefore, as shown in FIG. 15B , the space 23 m between the discharge port 23 f and the flow hole 21 a is easily filled with the built-in material 25 .

In addition, since the discharge port 23f of the present embodiment has a smaller diameter than the above-described embodiment, the flow of the contents 25 passing through the discharge port 23f is slow. Therefore, the space 23m is more easily filled by the built-in 25 . In plan view, if the opening area of the flow hole 21a is S1 and the opening area of the discharge port 23f is S2, then S2/S1≦5 is preferable. S2/S1 is, for example, 0.2 to 5, specifically, for example, 0.2, 0.5, 1, 1.5, 2, 2.5, 3, 3.5, 4, 4.5, 5, or a range between any two numerical values exemplified here. Inside.

Thus, in the present embodiment, the space 23m is easily filled with the built-in objects 25, and the "backflow phenomenon" can be suppressed by filling the space 23m with the built-in objects 25.

5. other implementations

The present invention can also be implemented in the following forms.

‧The cap 2 of the present invention can also be used for containers other than the laminated peelable container 1, for example, a single-layer container in which the entire container shrinks as the contents are discharged.

1‧‧‧Laminated peel-off container

2‧‧‧Block

3‧‧‧Container body

5‧‧‧Valve components

7‧‧‧Accommodating Department

7a‧‧‧Valve component mounting recess

7b‧‧‧Air circulation slot

9‧‧‧mouth

Claims (9)

A cap for being mounted on the mouth of a container for containing contents, wherein the cap is provided with a valve body, a seat and a nozzle, the valve body is provided with a flow hole, and the valve body is configured to come from the contents When the internal pressure is not applied to the annular portion around the flow hole, the edge of the flow hole abuts against the seat to close the flow hole, and the internal pressure is applied to the annular portion around the flow hole. When part, the valve body elastically deforms, so that the edge of the flow hole is separated from the seat to open the flow hole, the nozzle has a discharge cylinder, and the built-in The position of the discharge port is eccentric, and the discharge port is not concentric with the flow hole. The adjustment wall is inclined in a way, and the adjustment wall overlaps with the flow hole in plan view. A cap for being mounted on the mouth of a container for containing contents, wherein the cap is provided with a valve body, a seat and a nozzle, the valve body is provided with a flow hole, and the valve body is configured to come from the contents When the internal pressure is not applied to the annular portion around the flow hole, the edge of the flow hole abuts against the seat to close the flow hole, and the internal pressure is applied to the annular portion around the flow hole. part, the valve body elastically deforms, so that the The edge of the flow hole is separated from the base to open the flow hole. The nozzle has a discharge cylinder portion, and the discharge cylinder portion has a body cylinder portion and a diameter-reducing cylinder portion. The opening area of the diameter-reduction cylinder portion is smaller than the In the body tube, the reduced-diameter tube is arranged at an eccentric position on the top surface of the body tube, and a discharge port is provided at the front end of the reduced-diameter tube, and the built-in contents pass through the discharge port The top surface overlaps the flow hole in a planar view, and the inner surface of the top surface is curved so as to be convex upward. A cap for being mounted on the mouth of a container for containing contents, wherein the cap is provided with a valve body, a seat and a nozzle, the valve body is provided with a flow hole, and the valve body is configured to come from the contents When the internal pressure is not applied to the annular portion around the flow hole, the edge of the flow hole abuts against the seat to close the flow hole, and the internal pressure is applied to the annular portion around the flow hole. When part, the valve body elastically deforms, so that the edge of the flow hole is separated from the seat to open the flow hole, the nozzle has a discharge cylinder, and the built-in The discharge tube is provided with an adjustment wall that reduces the flow potential of the discharge of the contents, and the adjustment wall has an inclined surface that follows the inner peripheral surface of the discharge tube. The way away from and close to the outlet is inclined. The cap according to any one of Claims 1 to 3, wherein the valve body has a bowl-shaped portion, the flow hole is provided at the bottom of the bowl-shaped portion, and the valve body is configured such that when the When internal pressure is applied to the annular portion around the flow hole, the bowl portion elastically deforms in an inverse manner. The cap according to any one of Claims 1 to 3, wherein the seat is provided on an inner plug inserted into the mouth, the inner plug has a cylinder and a leg, and the leg is provided on the Between the cylindrical portion and the pedestal, the pedestal is provided on the leg portion in a pillar shape. The cap according to any one of Claims 1 to 3, wherein the seat is provided on an inner plug inserted into the mouth, the inner plug has a cylindrical portion, and a valve is provided on the inner peripheral surface of the cylindrical portion. A body support part, the valve body has a flange, and the flange is supported on the valve body support part. The cap according to any one of Claims 1 to 3, wherein the discharge port is arranged so as not to overlap the flow hole in a planar view. According to the cap described in any one of claim items 1 to 3, wherein, In plan view, when the opening area of the flow hole is S1 and the opening area of the discharge port is S2, S2/S1≦5. A laminated peel-off container, which is provided with a container body and a cap, wherein the container body is configured to include an outer shell and an inner bag, and the inner bag shrinks as the contents decrease, and the cap is based on claims 1 to 8 Any of the described caps.

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