JP2004010109A - Pressure regulation and venting check valve structure and method for pressure regulation for squeezing container - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a pressure regulation and venting check valve structure of a squeezing container capable of squeezing a little remaining content to the last and surely by easily resolving a negative pressure condition of a tubular container with an insufficient self-restoring force. <P>SOLUTION: The valve structure mounted on the body part of the squeezing container has a communicating pipe with a cutting blade on its one end inserted into an approximately central part of an elastic sheet and a valve made of a flexible resin passing through the pipe. The valve has either one of approximately a mushroom-like shape or a spindle-like shape with a larger diameter than the inner diameter of the pipe on its one end under an ordinary condition, and has approximately a sphere shape on the other end. Both ends are projected from the pipe and a part between both ends are made to be a shaft part with a smaller diameter than the inner diameter of the pipe. <P>COPYRIGHT: (C)2004,JPO

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a valve structure for sucking outside air into a tube container having insufficient self-restoring property so as to reliably squeeze contents such as mayonnaise and ketchup to the end, and to eliminate a negative pressure state of the container. .
[0002]
[Prior art]
In general, pasty sauces and seasonings such as mayonnaise and ketchup are packed in flexible tube containers that do not have sufficient self-restoring properties. There is no structure or ingenuity to do this.
[0003]
[Problems to be solved by the invention]
In the conventional tube container, since the container itself is formed of a flexible material so that the contents can be easily squeezed out, the self-restoring force of the container itself is not sufficiently reduced as the contents are reduced. In use, it was necessary to gradually squeeze the container from the rear end to the front end, and it was difficult to reliably squeeze the contents in the final stage of use.
Also, for example, the blow tube container found in toothpaste has a little self-restoring force than the tube container described above, but it is not enough, and the contents move backward depending on the pressing position during use. In the final stage of use, there is a problem that the contents cannot be easily squeezed out.
[0004]
Accordingly, the present invention has been made in view of these problems, and when the contents in a tube container or a blow tube container are reduced, the self-restoring force assists the restoration of the insufficient container and eliminates the negative pressure state of the container. This also provides a valve structure that prevents backward movement of the contents and enables the contents to be easily squeezed even in the final stage of use.
[0005]
[Means for Solving the Problems]
In order to solve the above-mentioned problem, a pressure regulating ventilation check valve structure according to claim 1 has a communicating pipe having a cutting blade at one end inserted and inserted into a substantially central portion of an elastic plate body, and In a normal state, one end of the valve has a substantially mushroom-like or spindle-like shape having a diameter larger than the inner diameter of the pipe, and the other end has a substantially spherical shape. The gist of the invention is that the shaft protrudes from the pipe, and between both ends is a shaft having a diameter smaller than the inner diameter of the pipe.
[0006]
According to a second aspect of the present invention, in the pressure regulating vent check valve structure according to the first aspect, the elastic plate body has a bowl shape, and one end side surface having a cutting blade of the communicating pipe has a bowl curved bottom surface. The gist of the present invention is to have a peelable adhesive layer on the bonding surface of the plate with the squeezed container body.
[0007]
Further, a pressure adjusting method according to claim 3 is a method of adjusting the pressure inside the squeezed container by being attached to a body portion of the squeezed container. The cutting blade is penetrated into the body of the squeezed container by rotating the clue part, and then, in the communication pipe, one end of a substantially mushroom having a diameter larger than the inner diameter of the pipe. Shape or spindle shape, the other end of which is substantially spherical, and a soft resin valve body having a shaft portion smaller in diameter than the communication pipe inner diameter is fitted between the two ends, and the both ends are connected to the communication pipe. Without projecting from the pipe, when squeezing the contents of the container,
When the substantially spherical portion is pressurized from the outside to the inside of the container and a part of the substantially spherical portion is pushed into the communication pipe, the ventilation inside and outside the container is shut off, and when the negative pressure state of the container is released. The gist of the invention is to regulate the pressure in the container by pulling out the substantially spherical portion partially pushed into the communication pipe and sucking the outside air through a gap between the valve body shaft and the communication pipe.
[0008]
Further, the squeezed container check valve structure according to claim 4 is a substantially U-shaped mounting tool for the body of the squeezed container. Is provided with an elastic plate body in which a communicating pipe having a cutting blade is inserted, and further has a valve made of a soft resin in the pipe, and the valve has a substantially mushroom whose one end has a diameter larger than the inner diameter of the pipe in a normal state. The other end is formed into a substantially spherical shape, and both ends are mounted so as to protrude from the pipe. Between both ends of the valve, a valve structure having a shaft portion having a diameter smaller than the inner diameter of the pipe, or one end is adsorbed to the side of the container. A disc is provided, and the other end is provided with a spherical valve at the end of the communication pipe on the container side, which includes a spherical valve, and has a cutting blade on a contact surface with the container, and the container internal pressure becomes negative pressure. In such a case, the self-restoring force of the mounting device itself when the external pressure is released is a valve structure that assists in taking in outside air into the container. And summarized in that according to any of the valve structure.
[0009]
6. The pressure regulating vent check valve structure according to claim 5, wherein after filling the contents from the bottom of the blow tube container, inserting a pressure assisting piece inscribed in the tube, and then connecting the inside and outside of the bottom welding seal portion with the pipe. The gist of the present invention is that a spherical valve receiver for enclosing a spherical valve is provided at the end of the pipe on the container side.
[0010]
BEST MODE FOR CARRYING OUT THE INVENTION
As shown in FIGS. 1 and 2, the pressure regulating vent check valve structure according to the present invention is a communicating pipe having a cutting edge (6) at one end at the center of a substantially circular elastic plate (2). The cutting blade is penetrated into the body of the squeezing container (11) while rotating the cue part (4) provided on the surface of the elastic plate body by inserting the (9) to form an integral body. Note that the number of the clues is not limited to the shape and the number shown in FIG.
Thereafter, as shown in FIGS. 2A and 2B, a valve body (3) made of a soft resin is fitted into the communication pipe. In the state of FIG. 2 (b), the communication pipe (9) has a slightly larger diameter than the valve shaft (8) (FIG. 2 (c)). Can be ventilated through the gap. The shape of one end of the valve element (3) may be substantially mushroom-like or spindle-like.
[0011]
The elastic plate (2) is desirably made of a flexible material such as a synthetic resin or a natural resin, and is formed integrally with the clue. Also, the valve body is preferably made of a material such as a soft resin, whose external shape changes to some extent due to external pressure and has a property of restoring in a normal state where no external pressure is applied. Further, the communicating pipe having a cutting blade at the tip is preferably made of alloy steel having high corrosion resistance, for example, stainless steel.
An adhesive is applied to the adhesive layer so that it does not easily come off once it has been attached to the container, but after it has been used up completely, it can be peeled off from the container and reused And
[0012]
Further, as shown in FIGS. 3A and 3B, the elastic plate (2) is formed into a bowl shape, and the self-restoring force is not sufficiently squeezed by utilizing the restoring force of the elastic plate itself. The restoring force of the container may be assisted, and a character such as a cicada may be designed on the surface.
The plate may have any shape, such as a rectangle or a circle, as long as the plate has a bowl shape, that is, a concave shape in cross section.
Further, as a variation, the elastic plate body (2) may be shaped to sandwich the body of the container (11) as shown in FIG. Since the elastic plate body (2) is made of a material having flexibility, in order to maintain a certain space, the container that has been dented by squeezing the container contents (P) is subjected to the elasticity via the valve mechanism. The plate (2) is restored and the outside air is sucked, and the shape of the container itself is restored.
[0013]
As shown in FIG. 4, the substantially U-shaped mounting device according to claim 4 has a suction plate (13) at one end and an elliptical elastic plate (2) at the other end and a valve mechanism. (14) is provided. The valve mechanism (14) includes a communication pipe (9), a spherical valve receiver (15b) containing a spherical valve (15a), and a spherical valve support piece (15c). The tip of the spherical valve receiver (15b), the inside of the container Is open, and the opening edge is a cutting blade (6).
[0014]
Further, the valve structure shown in FIG. 2 may be used instead of the above-described valve mechanism (14).
[0015]
As shown in FIG. 5, the pressure regulating vent check valve according to claim 5 has a valve mechanism shown in FIG. 4 (b) in a heat seal portion at the bottom of a blow tube container which is frequently used as a toothpaste container. Things. After the contents are injected, the pressure assisting piece (17) is inserted, and the communicating pipe (9) is sandwiched and sealed at the time of heat sealing. In addition, although the said pressing assistance piece is shape | molded by metal and hardening resin with high anticorrosion property, it is also possible to use a material like a sponge.
[0016]
[Example 1]
First Embodiment A first embodiment of the present invention will be described with reference to FIGS.
The present embodiment relates to a use in which the content such as mayonnaise and ketchup is stuck to a squeezed container having a reduced remaining content, and the content is easily used up to the end.
FIG. 1A is a perspective view of a pressure-regulating ventilation check valve body, FIG. 1B is a perspective view of the pressure-regulating ventilation check valve body seen from a contact surface side with a container, and FIG. 1C is a valve body. FIG. 1 (d) is a view showing that the pressure regulating vent check valve body is attached to the squeezed container, and FIG. 2 (a) is a valve body after the pressure regulating vent check valve body is attached to the container. FIG. 2B shows a state in which the valve body is about to be fitted into the communication pipe, FIG. 2B shows a state in which the valve body is fitted, and FIG. FIG.
[0017]
In the figure, (1) is a pressure regulating vent check valve body, (2) is an elastic plate, (3) is a valve, (4) is a clue, (5) is a substantially spherical portion, and (6) is off. (7) is a substantially mushroom-shaped portion, (8) is a shaft portion, (9) is a communication pipe, (10) is an adhesive layer, (11) is a container body, and (P) is a content.
[0018]
It is considered that the diameter of the elastic plate body (2) is suitably about 5 to 10 cm in consideration of sticking to a commercially available squeezed container of mayonnaise or ketchup. May be determined in consideration of the above. Further, a clue part (4) for turning when the cutting blade (6) provided at the end of the communication pipe (9) is inserted into the body of the container has a shape, a size and a number shown in the figure. Not limited to The elastic plate (2) and the clue are integrally formed using a flexible material such as a synthetic resin or a natural resin.
Although the communication pipe (9) has a cutting blade (6) at the tip on the container side, it is necessary that the communication pipe (9) does not deteriorate even by contact with the contents, and therefore, a metal or alloy steel having high corrosion resistance, such as stainless steel, is desirable. .
As shown in FIG. 2 (a), the valve body has a substantially mushroom-shaped part (7) inserted into the communication pipe, or a part of the substantially spherical part is pushed into the communication pipe as shown in FIG. For example, a material such as a soft resin whose external shape changes to some extent due to external pressure and which can be restored in a normal state where no external pressure is applied as shown in FIG. 2B is preferable. In addition, you may shape | mold to a spindle shape, without making it a substantially mushroom shape.
[0019]
As the contents of the squeezed container are reduced, the shape of the container is in a dented state due to the pressing action at the time of squeezing, but when squeezing the contents from such a state, usually the contents are squeezed with both hands. It involves a cumbersome operation of sequentially sending to the discharge port at the top of the container.
Therefore, as shown in FIG. 1 (d), the present invention attaches the pressure regulating vent check valve body (1) to the container body when the content is reduced from 2/3 to about half. I do. Hereinafter, the mounting procedure will be described.
[0020]
First, the squeezed container (11) whose content has been reduced to about 2/3 is restored to its original expanded state, and in this state, the cutting blade (6) provided at the tip of the communication pipe (9) is used. ) Is inserted into the body of the container (11) while turning the clue (4). At this time, since the adhesive is applied to the contact surface of the elastic plate (2) with the container, it is not easily peeled off.
Thereafter, as shown in FIG. 2 (a), the substantially mushroom-shaped portion (7) of the valve body (3) is inserted into the communication pipe (9), and the fitting is completed to the position shown in FIG. 2 (b).
[0021]
Therefore, when using the contents, as shown in FIG. 2C, the substantially spherical portion (5) of the valve body (3) is partially pushed into the communication pipe (9) to shut off the ventilation inside and outside the container. Thus, the contents can be squeezed out from the discharge port. Further, when the inside of the container is in a negative pressure state at the time of subsequent use, the valve body (3) is pulled out by pulling out the substantially spherical part (5) partially pushed into the state of FIG. 2 (b). ), The container (11) assumes the original expanded shape while sucking outside air from the gap between the shaft portion (8) and the communication pipe (9), and again connects the substantially spherical portion (5) of the valve body (3) to the communication pipe. (9) Partially push it in to block the ventilation inside and outside the container.
[0022]
As described above, according to the invention of the present application, even when the remaining content is running low, the negative pressure state of the container can be easily eliminated only by pushing in and pulling out the substantially spherical portion (5) of the valve body (3). The contents can be squeezed out to the end.
[0023]
[Example 2]
A second embodiment of the present invention will be described with reference to FIG. The present embodiment relates to a pressure regulating vent check valve structure according to the second aspect. FIG. 3A is a diagram showing the second embodiment, FIG. 3B is a diagram showing a partial cross section of the previous diagram, and FIG. 3C is a diagram showing a variation of the present embodiment. In addition, in the figure, (12) is a clamping device, and the other numerals and symbols are the same as in the first embodiment.
[0024]
In this embodiment, the valve structure itself is the same as that of the first embodiment except that the elastic plate 2 has a bowl shape.
When the container (11) in the negative pressure state has the original expanded shape, the substantially spherical portion (5) of the valve body (3) is pulled out and the outside air is sucked in the same manner as in the above embodiment. The elastic plate body (2) having a self-restoring force tends to return to the original bowl shape, and the force in the direction of the arrow in FIG. 3B acts to provide an effect of assisting the restoring force of the container itself.
In view of such characteristics, the elastic plate (2) in this embodiment is preferably made of a material that is larger and harder than that used in the above embodiment.
[0025]
Further, as shown in FIG. 3 (c), an elastic plate (2) having the same valve structure as in the above embodiment is formed into a shape holding the body of the container to form a clamping device (12). By trying to maintain a constant interval by the restoring force, suction of the container in a negative pressure state is assisted. The clamping device and the container may be formed by any means such as an adhesive or a suction disk.
[0026]
Also in the configuration of the present embodiment, the negative pressure state of the container can be easily eliminated.
[0027]
[Example 3]
A third embodiment of the present invention will be described with reference to FIG. The present embodiment relates to a substantially U-shaped mounting device for the body of the squeezed container according to the invention described in claim 4. 4A is a view showing a third embodiment, FIG. 4B is a view showing a valve mechanism, FIG. 4C is a view of the valve mechanism viewed from the direction of the arrow in FIG. FIG. 4D is a schematic diagram showing the holding device in a normal state and in a restored state when the external pressure is released.
In the figure, (12) is a clamp, (12 ') is an arm, (13) is a suction cup, (14) is a valve mechanism, (15a) is a spherical valve, (15b) is a spherical valve receiver, and (15c). Is a spherical valve support piece and other numerals and symbols are the same as in the above-described embodiment.
[0028]
The holding member (12) includes a suction cup (13) at one end of a U-shaped frame formed of a synthetic resin, and includes an elliptical elastic plate (2) and a valve mechanism (14) at the other end. It becomes. The valve mechanism (14) includes a communication pipe (9), a spherical valve receiver (15b) including a spherical valve (15a), and a spherical valve support piece (15c). The inside is open and the opening edge is a cutting blade (6).
When squeezing the contents of the container, the spherical valve (15a) closes the opening inside the container of the communication pipe (9), so that the air in the container does not leak out of the communication pipe (9). Further, as shown in FIG. 4 (c), when taking in the outside air into the container, the spherical valve support piece (15c) is set so that the spherical valve (15a) does not block the opening inside the container of the spherical valve receiver (15b). ) Supports the spherical valve (15a) while securing a ventilation space.
[0029]
The clipper (12) is mounted so as to pinch the container (11) from the bottom. Then, one side surface is supported on the side surface of the container by the suction plate (13), and the notch blade (6) at the tip of the valve mechanism (14) penetrates the container body on the opposite side.
Since the arms (12 ') of the holding device (12) are originally slightly inclined inward, they can be easily and securely held, but if necessary, the arms (12') can be connected to the container side of the elastic plate (2). An adhesive layer may be provided on the contact surface.
[0030]
In the normal state, the holding device (12) maintains the distance t between the arms (12 ') as shown in the upper diagram of FIG. 4 (d), but since it has flexibility, When an external force is applied when squeezing the contents of the container, both arms (12 ') bend inward. At this point, the container is in a dented state, that is, a negative pressure. When the external pressure is released, the distance t between the original arms (12 ') is reduced as shown in the lower diagram of FIG. The force of restoring works to maintain the air, and the outside air is sucked by the function of the valve mechanism (14), so that the negative pressure in the container is eliminated. The valve mechanism (3) shown in FIG. 2 (b) may be used without depending on the valve mechanism (14).
[0031]
As described above, also in this embodiment, the negative pressure state of the container can be easily eliminated, and the contents can be used to the end.
[0032]
[Example 4]
Fourth Embodiment A fourth embodiment of the present invention will be described with reference to FIGS. This embodiment relates to a blow tube container. FIG. 5A is a view showing a fourth embodiment, FIG. 5B is a schematic view seen from the direction of the arrow in FIG. 5A, and FIG. FIG. 6B is a diagram showing that the negative pressure state of the container is eliminated. In the figure, (16) is a blow tube container, (17) is a pressing aid, (18) is a heat seal portion, (19) is a discharge port, and other numbers and symbols are the same as those in the above-described embodiment. .
The check valve structure used in this embodiment has the same structure as the valve mechanism (14) described in the third embodiment, except that there is no cutting blade at the opening of the spherical valve receiver (15b). I do.
[0033]
After injecting the contents such as toothpaste from the bottom of a blow tube container often used as a toothpaste container, a pressure assisting piece (17) having a diameter inscribed in the container is inserted, and then a spherical valve (15a) is included. A communication pipe (9) having a spherical valve receiver (15b) at the tip is sandwiched and sealed by the container heat seal portion. Although not shown, it also has a spherical valve support piece (15c) shown in FIG.
[0034]
The pressing assisting piece (17) is a columnar body having a diameter in contact with the inner diameter of the container so as not to fall in the container, and one end on the bottom side of the container is squeezed out so as not to hinder the sealing. For convenience, it has a constricted shape as shown in FIG. The material of the pressing assisting piece (17) is preferably a hard sponge, a metal having a high anticorrosion property, or a hardened resin material.
The length of the pressing assisting piece (17) is suitably 1.5 times the diameter, but may be determined according to the container used.
[0035]
As shown in FIG. 6A, when discharging the contents, the spherical valve (15a) is pressed against the inside of the container of the communication pipe (9), so that it is in the "closed" state. As shown in FIG. 6 (b), when the blow tube itself in the negative pressure state sucks the outside air by its own restoring force, the spherical valve (15a) becomes a spherical valve support piece (not shown). As a result, an "open" state is achieved while securing a ventilation space.
[0036]
According to the present embodiment, as in the previous embodiment, the container can be easily restored, and the contents in the blow tube container retreat to the heat seal portion opposite to the discharge port depending on the pressed portion, depending on the pressed portion. Can be easily sent to the discharge port.
[0037]
【The invention's effect】
As described above, according to the present invention, outside air can be appropriately sucked into a flexible container that does not have a sufficient self-restoring force to be in a negative pressure state each time it is used, and the container is returned to the original expanded state by a simple operation. You can return and use the contents to the end.
[Brief description of the drawings]
1 (a) is a perspective view of a pressure regulating vent check valve body, (b) is a perspective view of a pressure regulating vent check valve body seen from a contact surface side with a container, (c) is a view showing a valve body, and (d) is a diaphragm. FIG. 2 (a) shows a state in which a valve body is about to be inserted into a communication pipe after the pressure regulating vent check valve body is attached to the container. FIG. 3 (b) is a view showing that the valve body is fitted through, and FIG. 3 (c) is a view showing that the substantially spherical portion of the valve body is pressurized. FIG. 3 (a) is a pressure regulating vent check valve according to claim 2. (B) A view showing a partial cross section of the previous figure (c) A view showing a variation of the second embodiment [FIG. 4] (a) A view showing a third embodiment (b) FIG. 4C is a view showing the valve mechanism, FIG. 4B is a view of the valve mechanism viewed from the direction of the arrow in FIG. 4B, and FIG. 4) Example 4 (B) Schematic diagram viewed from the direction of the arrow in FIG. 5 (a) [FIG. 6] (a) Diagram in which the container body is pressurized to discharge the contents (b) The negative pressure state of the container is eliminated [Description of reference numerals]
DESCRIPTION OF SYMBOLS 1 Pressure regulating vent check valve main body 2 Elastic plate 3 Valve body 4 Cue part 5 Substantially spherical part 6 Cutting blade 7 Substantially mushroom-shaped part 8 Shaft part 9 Communication pipe 10 Adhesive layer 11 Container main body 12 Clamping tool 12 'arm 13 Adsorber 14 Valve mechanism 15 (a) Spherical valve 15 (b) Spherical valve receiver 15 (c) Spherical valve support piece 16 Blow tube container 17 Press assisting piece 18 Heat seal portion 19 Discharge port P Contents

Claims (5)

The structure of the valve attached to the body of the squeezed container,
A communication pipe having a cutting blade at one end is inserted into a substantially central portion of the elastic plate body, and has a valve made of a soft resin that fits into the pipe,
In the normal state, one end of the valve is generally in the shape of a mushroom or a spindle having a diameter larger than the inner diameter of the pipe, and the other end is substantially spherical, and both ends protrude from the pipe. Pressure regulating vent check valve structure with shaft part smaller than inner diameter. 2. The elastic plate body having a bowl shape, one end side of the communicating pipe having a cutting blade having a bowl curved bottom surface, and a releasable adhesive layer on an adhesive surface of the elastic plate body with the squeezed container body. The described pressure regulating vent check valve structure. A method attached to the body of a squeezed container to regulate the pressure inside the container,
A communication pipe having a cutting blade at one end is inserted into a substantially central portion of the elastic plate body to be integrated, and the cutting blade is penetrated into the squeezed container body by rotating the clue portion,
Thereafter, in the communication pipe, one end has a substantially mushroom-like or spindle-like shape having a diameter larger than the inner diameter of the pipe, and the other end has a substantially spherical shape, and the other end has a diameter smaller than the inner diameter of the communication pipe. A valve body made of a soft resin as a shaft portion is fitted, and both ends are made to protrude from the communication pipe,
When squeezing the contents of the container,
By pressurizing the substantially spherical portion from the outside to the inside of the container and pressing a part of the substantially spherical portion into the communication pipe, the ventilation inside and outside the container is shut off,
Also,
When releasing the container negative pressure state,
A pressure regulation method for regulating the pressure in the container by pulling out the substantially spherical portion partially pushed into the communication pipe and sucking outside air through a gap between a valve body shaft and the communication pipe. A substantially U-shaped mounting tool for the body of the squeezed container,
At one end, there is a suction plate on the side of the container,
At the other end, an elastic plate body provided with a communicating pipe having a cutting blade is provided,
Further, the pipe has a soft resin valve,
In the normal state, one end of the valve is formed into a substantially mushroom shape having a diameter larger than the inner diameter of the pipe, the other end is formed into a substantially spherical shape, and both ends are mounted so as to protrude from the pipe. Valve structure consisting of a shaft,
Or
At one end, there is a suction plate on the side of the container,
At the other end, at the container end of the communication pipe, a spherical valve is provided, which contains a spherical valve and has a cutting blade on the contact surface with the container,
When the internal pressure of the container becomes a negative pressure, the self-restoring force of the mounting device itself at the time of releasing the external pressure is one of the valve structures that assists in taking in the outside air into the container. Discharge container check valve structure. After filling the contents from the bottom of the blow tube container, after inserting a pressing aid piece inscribed in the tube, a pipe connecting the inside and outside with the bottom welded seal portion is sandwiched and sealed, and the container side of the pipe A pressure-regulating vent check valve structure with a spherical valve receiver at the tip that contains a spherical valve.

Images