JP6903936B2 - Mouth plug - Google Patents

Description

The present invention relates to a spout attached to a packaging container.

Conventionally, as a spout to be attached to a packaging container, a spout having a tubular portion and a valve body provided inside the tubular portion is known. A slit is formed in the valve body, and the cylinder portion is opened and closed by opening and closing the slit. Patent Document 1 discloses such a spout.

Japanese Unexamined Patent Publication No. 08-28203

In such a spout, the airtightness of the slit is weak, and air from the outside easily flows in. Therefore, for example, in a container made of a soft material and whose volume can be reduced as the contents decrease, packaging that suppresses contact between the air and the contents by preventing the inflow of air from the outside. It was difficult to use in a container.

An object of the present invention is to provide a highly airtight mouth plug.

In order to solve the above problem, one aspect of the present invention is a spout that includes a tubular portion and a valve body that is inserted into the tubular portion and fixed to the inner peripheral wall of the tubular portion and is attached to a packaging container. A slit is formed in the valve body, and the slit is formed by a notch in a direction inclined by a predetermined angle from a direction perpendicular to the surface of the valve body. The portion of the tubular portion that is closed and includes a portion that intersects the extending direction of the slit is a spout having a lower rigidity than other portions along the circumferential direction of the tubular portion.

According to the present invention, since the slit is formed by a notch inclined with respect to the valve body, the area of the surfaces facing each other in the slit can be increased, and a highly airtight spout can be provided.

Perspective view of the packaging container according to the embodiment of the present invention. Vertical sectional view and bottom view of the spout according to an embodiment of the present invention. Vertical sectional view and bottom view of the spout according to an embodiment of the present invention. Bottom view of the spout according to the conventional example Vertical sectional view and bottom view of the spout according to an embodiment of the present invention. Vertical sectional view and bottom view of the spout according to an embodiment of the present invention. Vertical sectional view and bottom view of the spout according to an embodiment of the present invention. Vertical sectional view and bottom view of the spout according to an embodiment of the present invention.

(First Embodiment)
A perspective view of the packaging container 100 according to the present embodiment is shown in FIG. The packaging container 100 is, for example, a flexible packaging body. The packaging container 100 is configured by attaching the spout 10 to the container body 101. FIG. 2 shows a vertical cross-sectional view and a bottom view of the spout 10.

The spout 10 according to the present embodiment includes a tubular portion 11, a valve body 12, and a cap 13. Each end of the tubular portion 11 is provided on the outer side and the inner side of the container body, and as an example, the tubular portion 11 has a sealing portion 14 sealed to a sheet material which is a material of the container body 101 in an intermediate portion.

The valve body 12 is attached so as to close the inside of the tubular portion 11. The valve body 12 is made of an elastically deformable material. The valve body 12 is inserted into the tubular portion 11 and is fixed by a ridge 15 formed on the inner peripheral wall of the tubular portion 11. The outer edge of the valve body 12 has a predetermined thickness and maintains a constant strength, and the central portion excluding the outer edge is thinner than the outer edge and is deformable.

A slit 16 is formed in the central portion of the valve body 12. The slit 16 is formed by a notch having a predetermined inclination angle θ from a direction perpendicular to the surface of the central portion.

An example of a method of pouring out the contents will be described. FIG. 2 shows a case where the valve body 12 is in the closed state. From this state, when the cap 13 of the valve body packaging container 100 is removed, the container body 101 is grasped and pressed to increase the internal pressure, the contents push the valve body 12 outward to displace the valve body 12, and the facing surfaces in the slit 16 are separated from each other. , The valve body 12 is opened. When the pressing is continued, the contents are poured out through the cylinder portion 11. FIG. 3 shows a vertical cross-sectional view and a bottom view of the spout 10 in this state. The contents are not shown.

When the pressing is stopped after the desired amount of the contents is poured out, the displacement of the valve body 12 is restored, the facing surfaces in the slit 16 come into contact with each other, and the valve body 12 is closed. Since the facing surfaces are inclined from the vertical direction, they come into contact with each other with a sufficient contact area, so that the airtightness is high and air does not flow in from the outside. When the cap 13 is attached, the state returns to the state shown in FIG. As described above, in the packaging container 100, pouring and storage are possible in a state where contact between air and the contents is suppressed.

Since the two facing surfaces of the slit 16 of the valve body 12 are inclined by a predetermined angle from the vertical direction of the valve body 12, one whole of the facing surfaces is lower than the other (packaging container) in the closed state of the valve body 12. There is a hierarchical relationship (inside) and the whole of the other is above one (outside the packaging container), and the facing surfaces are firmly in close contact with each other. Even if the facing surfaces are separated from each other in the open state, this vertical relationship is maintained in the vicinity of both ends, so when approaching again, the entire facing surface returns to this vertical relationship and returns to the original closed state of close contact. Easy to return. On the other hand, when the two facing surfaces are provided vertically as in the conventional case, different vertical relationships may occur between one end and the other end of the slit when the valve body is opened and closed. In this case, as in the case of the spout 90 according to the conventional example shown in FIG. 4, there is a possibility that the valve body 92 may not be in a completely closed state because the facing surfaces do not come into close contact with each other even if they come close to each other. Further, even when the same vertical relationship occurs between one end side and the other end side of the slit 96, the facing surfaces approach each other and partially contact each other, but they do not completely overlap, and the surface of the valve body 92 does not completely overlap. There is a risk that a step will occur in the closed state and the closed state will be incomplete. Therefore, also in this respect, it is preferable that the facing surface is inclined from the vertical direction.

When the container body 101 is made of a soft material, the volume can be reduced as the contents are reduced. In particular, when the content is a liquid or a fluid, air can be almost completely expelled from the container body 101. If the spout 10 is used for such a container body, it is possible to prevent air from entering from the outside again, so that it is possible to maintain a state in which no air exists inside the packaging container and suppress contact between the air and the contents. Can be stored. Therefore, in order to prevent oxidation and the like, it is preferable to avoid contact with air, and the contents such as foods and cosmetics can be particularly preferably stored.

The valve body 12 can be formed of, for example, silicone rubber. Further, the inclination angle θ of the slit 16 is preferably, for example, 15 ° or more and 60 ° or less. If it is less than 15 °, the effect of providing the above-mentioned inclination is not sufficient, and if it exceeds 60 °, processing becomes difficult. The thickness of the central portion of the valve body 12 provided with the slit 16 is, for example, preferably 1 mm or more and 5 mm or less, and particularly preferably 2 mm or more and 4 mm or less. If it is less than 1 mm, the strength of the valve body is insufficient, and if it exceeds 5 mm, the cost of the material increases. Inclination angle of the slit 16 Within this range, the valve body 12 can be smoothly opened while ensuring a sufficient contact area between the facing surfaces. Further, the predetermined range including each end of the slit 16 may be thicker than the periphery thereof in order to suppress the occurrence of cracks. However, these are examples, and the material, inclination angle, and thickness can be appropriately selected.

The outer edge of the valve body 12 is thicker than the central portion, and a part of the valve body 12 is fitted in the fitting groove 17 provided inside the spout 10. As a result, the valve body 12 is more securely fixed to the spout 10. Further, the central portion of the valve body 12 has a predetermined gap between the valve body 12 and the spout 10 on the outer side of the packaging container so that the spout 10 does not interfere with the opening and closing.

(Second embodiment)
The mouth plug 20 of this embodiment will be described. 5 and 6 are a vertical sectional view and a bottom view of the spout 20 in the closed state and the open state, respectively. The same or corresponding elements as those in the first embodiment are designated by the same reference numerals, and the description thereof will be omitted.

In the spout 10 according to the first embodiment, the spout 20 is provided at two points of the tubular portion 11 that intersect the extending direction of the slit 16 of the valve body 12 along the circumferential direction of the tubular portion 11. A deformed portion 21 having a lower rigidity than the portion and being easily deformed is provided. As an example, the deformed portion 21 is formed to be smaller in thickness than the other portion 22 adjacent to the tubular portion 11 in the circumferential direction. By pinching and deforming the deformed portion 21 through the sheet material of the container body with fingers, the tubular portion 11 and the valve body 12 are deformed, and the valve body 12 is opened. When the deformation is stopped, the valve body 12 is closed. As a result, the opening and closing of the valve body 12 can be controlled regardless of the internal pressure of the packaging container 100, which has the following advantages. That is, for example, when the viscosity of the contents is low, if the contents are poured out by increasing the internal pressure of the packaging container 100 as in the first embodiment, the momentum of the pouring may become too strong. On the other hand, in the present embodiment, for example, when the deformed portion 21 is pinched while the packaging container 100 is tilted, the valve body 12 is opened, and the contents are poured out according to gravity instead of internal pressure and pinched. When stopped, the valve body 12 is closed and the pouring of the contents is stopped. The momentum of the injection can be preferably set by adjusting the opening degree of the valve body 12 by adjusting the force of pinching the deformed portion 21. Therefore, in this embodiment, it can be more preferably carried out when the viscosity of the content is low.

Further, pouring may be performed by pinching the deformed portion 21 while increasing the internal pressure. Since the opening and closing of the valve body 12 can be controlled independently of the internal pressure, it is easy to achieve both high airtightness and ease of pouring regardless of the viscosity of the contents.

The valve body 12 and the spout 10 are provided with an engaging mechanism (not shown) that regulates the positioning and rotation of the valve body 12 around the axis of the tubular portion 11 in order to align the extending direction of the slit 16 with the deformed portion 21. Is preferable. The engaging mechanism can be appropriately designed, such as a combination of a concave portion and a convex portion.

Further, the spout 10 or the container body 101 may be provided with a display indicating that the deformed portion 21 should be pushed at the time of pouring and the position thereof.

(Third Embodiment)
The spout 30 of the present embodiment will be described. 7 and 8 are a vertical sectional view and a bottom view of the spout 30 in the closed state and the open state, respectively. Elements that are the same as or correspond to the first and second embodiments are designated by the same reference numerals, and the description thereof will be omitted.

The spout 30 is provided with a knob plate 31 extending from the pair of deformed portions 21 toward the inner side of the packaging container (axial direction of the tubular portion 11) in the spout 20 according to the second embodiment. It is a thing. By pinching the knob plate 31, it is possible to easily press the deformed portion 21 and the valve body 12. In order to facilitate the concentration of the force on the knob plate 31 on the deformed portion 21, cuts 32 may be provided at both ends of the knob plate 31. If the knob plate 31 can easily deform the tubular portion 11, the tubular portion 11 does not have to be partially weakened in rigidity. That is, the knob plate 31 may be provided on the spout 10 according to the first embodiment.

Each of the above embodiments is an example, and the present invention can be appropriately modified and implemented. The container body is a flexible package having an almost rectangular parallelepiped shape, but the present invention is not limited to this, and if the container is made of a soft material, the volume is reduced after the contents are poured, so that the internal pressure is less likely to decrease than the external pressure. Can be preferably carried out. For example, it may be a laminated tube. Further, the stretching direction of the slit can be appropriately set according to the shape of the container body. For example, if the direction is set to be perpendicular to the main flat portion of the container body, the direction of pressing the flat portion and the direction of pinching the knob plate match, so that pouring is easy.

The present invention is useful for packaging containers and the like.

10, 20, 30 Mouth plug 11 Cylinder part 12 Valve body 13 Cap 14 Seal part 15 Convex 16 Slit 17 Fitting groove 21 Deformed part 22 Part other than deformed part 31 Knob plate 32 Cut 90 Mouth plug 92 Valve body 96 Slit 100 Packaging container 101 Container body

Claims (4)

A spout that includes a tubular portion and a valve body that is inserted into the tubular portion and fixed to the inner peripheral wall of the tubular portion, and is attached to a packaging container.
A slit is formed in the valve body, and the valve body has a slit.
The slit is formed by a notch in a direction inclined by a predetermined angle from a direction perpendicular to the surface of the valve body.
By opening and closing the slit, the cylinder portion is opened and closed, and the cylinder portion is closed .
A spout having a portion of the tubular portion including a portion intersecting the extending direction of the slit, which has lower rigidity than other portions along the circumferential direction of the tubular portion. A pair of end portions of the tubular portion on the inner side of the packaging container, including a portion that intersects the extending direction of the slit when viewed from the axial direction of the tubular portion, project in the axial direction. The spout according to claim 1 , wherein a knob plate is formed. The spout according to claim 1 or 2 , wherein the tubular portion and the valve body are formed with an engaging mechanism that regulates the rotation of the valve body around the axis of the tubular portion. The spout according to any one of claims 1 to 3 , wherein the valve body has a portion having a thickness including an end portion of the slit larger than the thickness of a portion around the valve body.

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