JP2014091536A - Ejecting inside plug with slit valve - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an ejecting inside plug with a slit valve, which can prevent such a bubble entrainment reliably as is feared to occur at a continuous discharge time.SOLUTION: An ejecting inside plug with a slit valve, comprises: an inside plug body 30 including a main cylinder portion 35 erected from a base portion 31 liquid-tightly fitted in a neck portion 13 of a container 10, a top wall 36 extended transversely from the upper end of the main cylinder portion 35, and an ejecting cylinder portion 38 erected from the circumferential edge of an ejection hole 37 poured in the central portion of the top wall 36; and a slit valve 40 having a circumferential edge portion 41a of an elastic wall 41 liquid-tightly attached in a horizontal arrangement to a circumferential edge portion 36a of the back face of the top wall 36, and having a slit 43 formed in a central portion 41b of the elastic wall 41. A recess S communicating with the ejection hole 37 and forming a space between itself and the central portion 41b of the elastic wall 41. The recess S has a taper face 39 formed to expand radially, gradually from the ejection hole 37 to the circumferential edge portion 41a of the elastic wall 41.

Description

  The present invention relates to a spouting stopper with a slit valve that is attached to the mouth-and-neck portion of a container that can be elastically squeezed, and in particular, is intended to prevent foam biting that may occur during continuous discharge.

  Conventionally, as a pouring plug with a slit valve attached to the mouth-and-neck portion of a container that can be elastically squeezed, for example, one disclosed in Patent Document 1 is known. In the pouring spigot of Patent Document 1, the cap main body attached to the mouth and neck of the container has an upper cylindrical portion standing on the upper portion of the cap main body, and a top extending laterally from the upper end of the upper cylindrical portion. It has a wall and a pouring hole drilled in the center of the top wall. In addition, a peripheral portion of an elastic valve (that is, a slit valve) is fitted to the inner side surface of the lower portion of the cap body, and the elastic valve has a main cylinder portion that rises inside the upper cylinder portion, and And an elastic wall horizontally provided at the upper end of the main cylinder portion, and a slit is formed in the elastic wall.

Japanese Patent Laid-Open No. 11-240554

  However, in the dispensing stopper having the structure as described in Patent Document 1, the liquid in which bubbles are mixed is dispensed at the time of continuous discharge in which the liquid in the container is poured out by continuously squeezing the container. There was a possibility that the foam biting which is.

  The present invention has been developed in view of the current situation as described above. By continuously squeezing the container, it is possible to reliably prevent foam biting that may occur during continuous discharge in which the liquid in the container is poured out. The purpose is to propose a pouring plug with a slit valve.

  As a result of intensive studies on the above problems, the present inventors have obtained the following knowledge. That is, when the container is restored after the container is squeezed, liquid may remain in the space between the main cylinder part of the elastic valve (slit valve) and the upper cylinder part of the cap body. When a part of the air sucked from the outlet hole toward the slit of the elastic valve is entrained to form bubbles, when the container is squeezed again, the bubbles are mixed with the liquid to be poured out.

The present invention has been made on the basis of the above findings, and the gist of the present invention is as follows.
1. In a spouting stopper with a slit valve, which is attached to the mouth and neck of a container having an elastically squeezable body and discharges the liquid in the container through the slit valve,
A peripheral portion of a pouring hole that is erected from a base portion that is liquid-tightly attached to the mouth and neck of the container, a top wall is laid horizontally at the upper end of the main cylinder portion, and a central portion of the top wall is drilled An inner plug main body formed by erecting the pipe barrel from
A liquid-tight attachment of the peripheral edge of the elastic wall horizontally disposed on the peripheral edge of the back surface of the top wall, and a slit valve formed with a slit in the central part of the elastic wall;
The back surface of the top wall is provided with a recess that communicates with the pouring hole and forms a space with the central portion of the elastic wall,
The dispensing recess with a slit valve, wherein the recess has a tapered surface that gradually increases in diameter from the dispensing hole to the peripheral edge of the elastic wall.

2. The taper surface has a straight cross section, and is a pouring plug with a slit valve according to 1 above.

3. The slit valve has an annular mounting ring provided on the lower surface of the peripheral edge of the elastic wall, and is fitted to the inner peripheral surface of the main tube portion by the mounting ring so as not to be detached. 2 spouting stopper with slit valve.

4). The slit valve is a dispensing plug with a slit valve according to any one of 1 to 3, wherein a peripheral edge of an elastic wall is fixed to a peripheral edge of the back surface of the top wall.

  According to the present invention, the back surface of the top wall of the inner plug main body is provided with a recess that forms a space between the back surface and the central portion of the elastic wall of the slit valve. Since the tapered surface that gradually expands to the peripheral edge portion is provided, it is possible to reliably prevent the liquid from remaining in the recess when the liquid in the container is poured out. Therefore, bubbles are not generated when the container is restored, and the occurrence of bubble biting can be reliably prevented.

It is a longitudinal cross-sectional view which shows the state in which the extraction stopper with a slit valve which concerns on one Embodiment of this invention was attached to the mouth neck part of the container.

Hereinafter, with reference to the drawings, a dispensing plug with a slit valve according to an embodiment of the present invention will be described in detail.
FIG. 1 is a longitudinal cross-sectional view showing a state in which the dispensing stopper with a slit valve according to the present embodiment is attached to the mouth and neck of the container. In the figure, 10 is a container, and 20 is a stopper during pouring. The dispensing inner stopper 20 includes an inner stopper body 30 and a slit valve 40.

  The container 10 includes a cylindrical body 11 that can be elastically squeezed, a shoulder 12 that gradually decreases in diameter from the upper end of the body 11, and a cylindrical mouth and neck that stands up from the upper end of the shoulder 12. 13. On the outer peripheral surface of the mouth-and-neck portion 13, an undercut 14 that protrudes in an annular shape is provided at the central portion in the vertical direction, and below that, it protrudes in an annular shape, but has a larger protrusion than the undercut 14. A portion 15 is provided. The undercut formed on the inner surface of the peripheral wall of the outer lid (not shown) is fitted to the undercut 14, and the outer lid is locked by the lower end of the peripheral wall coming into contact with the flange 15. It is like that.

  A base 31 of a middle plug body 30 of the spouting stopper 20 is liquid-tightly attached to the mouth / neck part 13 of the container 10. Specifically, the base portion 31 includes a fitting tube portion 32, an outward flange 33 extending horizontally outward from the upper end of the fitting tube portion 32, and an inward flange extending horizontally inward from the upper end of the fitting tube portion 32. 34, the fitting cylinder portion 32 is press-fitted into the mouth-neck portion 13 of the container 10, and the lower surface of the outward flange 33 is brought into contact with the upper end surface of the mouth-neck portion 13 of the container 10, whereby the base portion 31. Is attached to the mouth-and-neck portion 13 in a liquid-tight manner. In addition, you may make it the fitting cylinder part 32 of the inside plug main body 30 fix to the internal peripheral surface of the mouth neck part 13 with an undercut or a screw | thread, for example.

  A cylindrical main tube portion 35 is erected on the inner peripheral edge of the inward flange 34 described above. A top wall 36 extends horizontally at the upper end of the main cylindrical portion 35, and a pouring hole 37 is formed in the center of the top wall 36. A pouring tube portion 38 is erected on the side.

  The upper surface of the peripheral edge portion 41 a of the elastic wall 41 that is horizontally disposed with the slit valve 40 is in contact with the peripheral edge portion 36 a on the back surface of the top wall 36 of the inner plug main body 30. The upper end surface of the annular mounting ring 42 is fixed to the lower surface of the peripheral edge portion 41 a of the elastic wall 41. The outer peripheral surface of the annular mounting ring 42 is held on the inner peripheral surface of the main cylindrical portion 35 by an undercut (not shown). That is, the slit valve 40 includes an elastic wall 41 and a mounting ring 42 and is inserted into the main cylinder portion 35 from below, and the upper surface of the peripheral edge portion 41 a of the elastic wall 41 is changed to the peripheral edge portion 36 a on the back surface of the top wall 36. At the same time, the outer peripheral surface of the mounting ring 42 is integrated with the inner plug main body 30 by fitting the outer peripheral surface of the mounting ring 42 to the inner peripheral surface of the main cylindrical portion 35 by an undercut. As described above, it is preferable that the slit valve 40 includes the attachment ring 42 from the viewpoint of assembling. However, the attachment ring 42 is omitted, and the upper surface of the peripheral portion 41a of the elastic wall 41 of the slit valve 40 is, for example, an adhesive. May be used to adhere to the peripheral edge 36a on the back surface of the top wall 36. Further, when the slit valve 40 includes the attachment ring 42, such fixation may be performed.

  A slit 43 having a cross shape in plan view is formed in the central portion 41 b of the elastic wall 41 of the slit valve 40. The slit 43 can be formed in an appropriate shape in consideration of the viscosity of the stored liquid, the amount used, etc., such as a single letter shape or a Y shape, instead of the cross shape.

  The back surface of the top wall 36 of the inner plug body 30 is provided with a recess S that communicates with the pouring hole 37 and forms a space with the central portion 41 b of the elastic wall 41 of the slit valve 40. Has a tapered surface 39 that gradually increases in diameter from the pouring hole 37 to the peripheral edge 41 a of the elastic wall 41. The tapered surface 39 has a linear cross section, and its inclination is set so that a space for opening the valve of the slit valve 40 is secured. That is, when the liquid in the container is poured out, the liquid bends the peripheral area of the slit 43 provided on the elastic wall 41 of the slit valve 40 toward the concave portion S, and spreads and passes the slit 43. At this time, it is preferable to set the angle such that the region of the elastic wall 41 which is bent and deformed does not interfere with the tapered surface 39. Further, the tapered surface 39 is preferably linear in cross section as shown in the figure, but it can also be formed in a cross sectional curve shape convex upward or downward. Even in the case of such a cross-sectional curved shape, it is preferable to set the shape of the tapered surface 39 so that a space for opening the valve of the slit valve 40 is secured when the liquid in the container is poured out.

  According to the pouring spigot 20 in the present example described above, the wall surface of the recess S that forms a space between the elastic wall 41 of the slit valve 40 and the back surface of the top wall 36 of the plug main body 30 is poured out. Since the tapered surface 39 gradually increases in diameter from the hole 37 to the peripheral edge portion 41a of the elastic wall 41, the container 10 is tilted so that the tip of the dispensing tube portion 38 faces downward, and the body portion of the container 10 When 11 is picked and elastically squeezed and the liquid in the container is poured out, the liquid does not cause turbulent flow in the recess S space, so that the liquid can be poured out smoothly. Thereby, generation | occurrence | production of a liquid splash can also be reduced. Furthermore, when the shape of the trunk portion 11 is restored and the liquid in the dispensing cylinder portion 38 and the recess S space and the outside air are sucked into the barrel portion 11, the liquid does not accumulate in the recess S space. Therefore, the flow of liquid back into the container can be made smooth. Therefore, smooth liquid running can be realized. As a result, the residual liquid is reduced, and excessive liquid dripping can be prevented. Furthermore, the residual liquid in the recess S space can be reduced, and therefore, it is possible to prevent the sucked air from being entrained in the residual liquid and generating bubbles. As a result, it is possible to reliably prevent the occurrence of bubble biting during continuous discharge.

  The above description is merely an example of the present invention, and various modifications can be made within the scope of the claims. For example, the top wall of the inner plug body does not necessarily have to be horizontally extended. If the peripheral edge of the back surface is a horizontal surface and the wall surface of the recess is a tapered surface, the shape of the outer surface is conical. It can be appropriately changed to a dome shape or the like. Moreover, although the base part of the inside plug main body was demonstrated as what consists of a fitting cylinder part, an outward flange, and an inward flange, it is not limited to this. For example, if the diameter dimension of the main tube part of the inner plug body and the mouth and neck part of the container are set to the same level, there is no need to provide an inward flange, and a structure that can be liquid-tightly attached to the mouth and neck part of the container Can be used in place of the above-described fitting cylinder and outward flange. It has been described that an undercut and a sheath are provided on the outer peripheral surface of the mouth and neck of the container, and an outer lid can be attached to the mouth and neck, but instead, on the outer peripheral surface of the main tube portion of the inner plug body. For example, it is also possible to provide an undercut and a sheath part and attach an outer lid to the main cylinder part. In addition, as the liquid in the container, the case of using a low-viscosity liquid such as water has been described as an example, but a slightly high-viscosity liquid or a jelly-like liquid such as a semi-solid can also be used. . Such a slightly viscous liquid or a jelly-like liquid such as a semi-solid tends to accumulate in the recessed space due to its high viscosity, but according to the present invention, such a problem is avoided. Can be used in a sanitary manner.

  ADVANTAGE OF THE INVENTION According to this invention, the extraction stopper with a slit valve which can prevent the bubble biting which generate | occur | produces a concern at the time of continuous discharge can be supplied stably.

DESCRIPTION OF SYMBOLS 10 Container 11 trunk | drum 12 shoulder part 13 mouth neck part 14 undercut 15 collar part 20 pouring middle stopper 30 middle stopper body 31 base part 32 fitting cylinder part 33 outward flange 34 inward flange 35 main cylinder part 36 top wall 36a Perimeter (top wall)
37 Outlet 38 Outlet cylinder 39 Tapered surface 40 Slit valve 41 Elastic wall 41a Peripheral part (slit valve)
41b Center part 42 Mounting ring 43 Slit S Concave part

Claims (4)

In a spouting stopper with a slit valve, which is attached to the mouth and neck of a container having an elastically squeezable body and discharges the liquid in the container through the slit valve,
A peripheral portion of a pouring hole that is erected from a base portion that is liquid-tightly attached to the mouth and neck of the container, a top wall is laid horizontally at the upper end of the main cylinder portion, and a central portion of the top wall is drilled An inner plug main body formed by erecting the pipe barrel from
A liquid-tight attachment of the peripheral edge of the elastic wall horizontally disposed on the peripheral edge of the back surface of the top wall, and a slit valve formed with a slit in the central part of the elastic wall;
The back surface of the top wall is provided with a recess that communicates with the pouring hole and forms a space with the central portion of the elastic wall,
The dispensing recess with a slit valve, wherein the recess has a tapered surface that gradually increases in diameter from the dispensing hole to the peripheral edge of the elastic wall.   The dispensing tap with a slit valve according to claim 1, wherein the tapered surface has a linear cross section.   The slit valve has an annular mounting ring provided on the lower surface of the peripheral edge of the elastic wall, and is fitted to the inner peripheral surface of the main tube portion by the mounting ring so as not to be detached. Or the inside tap with a slit valve of 2 description.   The dispensing valve plug with a slit valve according to any one of claims 1 to 3, wherein the slit valve has a peripheral edge portion of an elastic wall fixed to a peripheral edge portion on a back surface of the top wall.

Images