JP2006111335A - Double-structure squeeze container - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a surely discharging double-structure squeeze container which has a simple structure and is easy to manufacture. <P>SOLUTION: The double-structure squeeze container includes an inner container 16 having a flexible bag 12 and a cylindrical spout 14 attached to the bag 12, and an outer container 34 covering the inner container 16 and squeezable to its original form. The discharging nozzle 26 of the inner container 16 has a discharging valve projection 20 projecting outward from the end of the spout 14 and having a conical side, a discharging through-hole 22 for allowing the inside and outside of the inner container 12 to communicate with each other, and a check valve member 28 having elasticity and designed such that a fittable hole 30 is in close contact with the side of the discharging valve projection 20. The outer container 34 has an insertion section 45 through which the spout 14 of the inner container 16 is inserted, and an air intake section 51 for permitting outside air to enter the outer container. The air intake section 51 includes an air intake valve projection 54 having a conical side and projecting inside the outer container 34, an air intake through-hole 52 for allowing the inside and outside of the outer container 34 to communicate with each other, and the check valve member 28 designed such that the fittable hole 30 is in close contact with the side of the air intake valve projection 54. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a double-structure squeeze container that can store liquid food, cosmetics, and other fluid materials, and can discharge the stored items.

  Conventionally, there are bag-like containers that contain liquid foods, cosmetics, and other fluid materials. A bag-shaped container has a cylindrical spout made of a synthetic resin attached to a bag made of a flexible synthetic resin film or a laminate made by metal deposition on a resin film, and a cap is screwed to the spout. Combined and detachable. Such a bag-like container is widely used as an optimum container for liquid and jelly-like products because it has the property that the contents do not come into contact with the outside air and has flexible deformability. Further, as disclosed in the following patent documents, these bag-like containers are used as inner containers, and an outer container having squeeze property is provided on the outer side thereof, and the inner container is hermetically sealed in the outer container. There is a double structure squeeze container attached to.

This double-structure squeeze container is provided with an air intake part with a check valve that prevents air from flowing into the side of the outer container from the outside, and the contents of the spout of the bag-like container It has a backflow prevention structure that can be poured out and prevents backflow. The use method of this double-structure squeeze container is that the pressure in the outer container is compressed by the pressing operation of the outer container to generate a positive pressure, and the bag-like inner container is pressed through the positive pressure in the outer container. Pour out things. When the pressure on the outer container is released, the outer container begins to restore its original volume shape, negative pressure is generated in the outer container, outside air flows in from the check valve, and the negative pressure is released. Restored to shape.
Japanese Patent Laid-Open No. 2003-321038 JP 2003-12050 A Japanese Patent Laid-Open No. 9-1240510 Japanese Patent Laid-Open No. 5-16950

  In the case of the techniques disclosed in the above-mentioned conventional patent documents, the check valve and the backflow prevention structure of the spout, which are attached to the outer container and into which air flows, and the container structure in the vicinity thereof are complicated and costly. is there. In addition, the check valve and the backflow prevention member having a relatively simple structure do not have a sufficient backflow prevention function.

  The present invention has been made in view of the above-described problems of the prior art, and an object thereof is to provide a double structure squeeze container that is easy to manufacture with a simple structure and capable of reliable dispensing operation. .

  The present invention comprises an inner container in which a cylindrical spout is provided in a flexible bag body, and an outer container that covers the inner container and has a squeeze property that can be restored. A nozzle part is provided, and the dispensing nozzle part is formed in the vicinity of the dispensing valve protrusion and the dispensing valve protrusion protruding outward with a conical side surface at the dispensing outlet end. A check-out valve that communicates the inside and the outside of the inner container, and a check valve member that has elasticity and closes the fill-out hole and has a fitting hole in close contact with the side surface of the discharge valve projection The outer container has an insertion part through which the spout of the inner container fits in an airtight state and is inserted to the outside, and an intake part for introducing outside air into the outer container, An intake valve protrusion that has a conical side surface and protrudes inside the outer container, and is formed in the vicinity of the intake valve protrusion of the outer container. An intake through hole communicating between the side and the outside, and a check valve member that has elasticity and closes the intake through hole and has a fitting hole in close contact with a side surface of the intake valve projection, The nozzle part opens the check valve member when a force is applied to the outer container and the contents of the inner container are squeezed, and the intake part moves when the inner pressure of the outer container becomes negative. It is a double structure squeeze container that the check valve member opens.

  Furthermore, the pouring outlet and the pouring valve protrusion of the inner container, and the lid member of the outer container and the intake valve protrusion may be integrally molded with a synthetic resin.

  The present invention also includes an inner container in which a cylindrical spout is provided in a flexible bag body, and an outer container that covers the inner container and has a squeeze property so that the inner container can be restored. The inner plug member is fitted with a spout of the inner container, the inner plug member is provided with a pouring nozzle portion in the pouring port, and the pouring nozzle portion includes the pouring nozzle portion. A pouring valve projection having a conical side face at the outlet end and projecting outward; a pouring through hole formed in the vicinity of the pouring valve projection and communicating between the inside and the outside of the inner container; Provided with a check valve member that has elasticity and closes the pouring through hole and has a fitting hole in close contact with the side surface of the pouring valve protrusion, and the outer container has an air intake portion for introducing outside air The intake portion has a conical side surface and is formed in the vicinity of the intake valve protrusion and an intake valve protrusion that protrudes inside the outer container. An intake through hole communicating between the inside and the outside of the outer container, and a check valve member that has elasticity and closes the intake through hole and has a fitting hole in close contact with a side surface of the intake valve protrusion Provided, and the side surfaces of the extraction valve projection and the intake valve projection are in close contact with the inner peripheral surface of the fitting hole of each check valve member, and the extraction nozzle portion exerts a force on the outer container. And the check valve member opens when the contents of the inner container are squeezed, and the intake portion opens the check valve member when the inside of the outer container becomes negative pressure It is a squeeze container.

  Furthermore, the inner plug member and the dispensing valve protrusion of the outer container, and the lid member and the intake valve protrusion of the outer container may be integrally formed with a synthetic resin, respectively.

  Further, the extraction valve protrusion and the intake valve protrusion have the same shape, and the check valve member, which is a common component, is attached thereto.

  The double-structure squeeze container of the present invention has a simple structure, and the contents of the inner container can be poured out cleanly to the end by a simple operation that only squeezes the outer container. In addition, it is easy to manufacture, inexpensive, easy to use, and highly effective in preventing backflow.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. 1 and 2 show a first embodiment of the present invention. A double structure squeeze container 10 according to this embodiment is made of a flexible synthetic resin film or a laminate material of a resin film subjected to metal deposition. An inner container 16 to which a cylindrical spout 14 made of a slightly hard synthetic resin is attached is provided on the bag body 12. On the outer peripheral surface of the spout 14, a male screw 18 to which a cap 60 described later is screwed is formed.

  On the inner peripheral surface of the spout 14, a partition portion 15 that separates the inside and outside of the spout 14 is formed integrally with the spout 14 on the inner side of the bag body 12 slightly from the upper end surface 14 a of the spout 14. . At the center of the partition portion 15, a conical side surface extraction protrusion 20 that protrudes to the outside of the bag body 12 is integrally formed with the spout 14. The tip of the dispensing valve protrusion 20 is located closer to the bag body 12 than the upper end surface 14 a of the spout 14. Four partitioning through holes 22 are formed at equal intervals along the outer periphery of the dispensing valve protrusion 20 in the partition 15, and the inside and outside of the spout 14 are communicated with each other. A locking groove 24 that locks a check valve member 28, which will be described later, is formed in the upper end surface 14a of the spout 14 around the periphery of the spout valve protrusion 20 and the spout through hole 22. .

  A check valve member 28 made of an elastic material such as a flexible synthetic resin or rubber is provided on the upper end surface 14 a of the spout 14, and a spout nozzle portion 26 is formed together with the spout valve protrusion 20. Yes. In the dispensing nozzle portion 26, a check valve member 28 having a substantially M-shaped cross section is fitted in the locking groove 24, and the conical inner surface of the fitting hole 30 in the central portion of the check valve member 28 is The dispensing valve protrusion 20 formed on the conical side surface is fitted in a liquid-tight state. The peripheral portion of the check valve member 28 is formed in a mortar shape that approaches the upper end surface 14a side of the spout 14 as it is away from the spout valve protrusion 20, covers the spout through-hole 22, and further, A cylindrical insertion portion 32 extending in the direction of the bag body 12 is provided. The part from the periphery of the fitting hole 30 to the insertion part 32 is formed thin, and is provided in a shape that can be easily elastically deformed. The insertion portion 32 is inserted into and locked in the locking groove 24 of the spout 14, and a convex portion that locks in the inner recess of the locking groove 24 is provided near the tip of the insertion portion 32. It is formed around.

  On the outer side of the inner container 16, an outer container 34 having the same length as the bag body 12 of the inner container 16 is provided. The outer container 34 includes a bottomed cylindrical outer container main body 36, and the outer container main body 36 has appropriate flexibility and has a squeeze property so that it can be restored. A cylindrical connecting portion 38 having a slightly smaller diameter is integrally formed on the upper end portion of the outer container body 36, and a male screw 40 is integrally formed on the outer peripheral surface of the connecting portion 38.

  A lid member 42 is screwed onto the male screw 40 of the outer container body 36. The lid member 42 is provided with a top surface portion 44 that closes the connecting portion 38, and a cylindrical insertion portion 45 that protrudes above the outer container body 36 is integrally formed at the center of the top surface portion 44. A peripheral side portion of the top surface portion 44 is positioned on the outside so as to be fitted to the connecting portion 38 of the outer container main body 36, and a cylindrical side surface portion 46 that covers the connecting portion 38 is provided. On the inner peripheral surface of the side surface portion 46, a female screw 48 that is screwed into the male screw 40 of the connecting portion 38 is formed. A short cylindrical mounting portion 50 that is in close contact with the inner peripheral surface of the coupling portion 38 is integrally provided on the surface of the top surface portion 44 on the outer container main body 36 side.

  An intake portion 51 is provided between the spout 14 and the side surface portion 46 of the top surface portion 44. The intake portion 51 is formed so as to communicate from the top surface portion 44 into the outer container main body 36. On the back surface side of the top surface portion 44 surrounded by the intake portion 51, an intake valve protrusion 54 that protrudes conically toward the outer container body 36 is provided by integral molding with the lid member 42. The intake valve protrusion 54 has the same shape as the dispensing valve protrusion 20 formed at the spout 14 of the inner container 16 and is positioned upside down. The front end of the intake valve protrusion 54 is located closer to the top surface 44 than the lower end surface 51 a of the intake 51. In the top surface portion 44 of the intake portion 51, four intake through holes 52 are provided at equal intervals along the outer periphery of the intake valve protrusion 54. The number of intake through holes 52 is the same as that of the extraction through holes 22 and the same number is provided. A locking groove 56 for locking the check valve member 28 described above is formed in the lower end surface 51 a of the intake portion 51 so as to make a round around the intake valve protrusion 54 and the intake through hole 52. The fitting hole 30 of the check valve member 28 is in close contact with the side surface of the intake valve protrusion 54, covers the intake through hole 52, and is inserted into and locked in the engagement groove 56 of the intake nozzle member.

  In the lid member 42, the spout 14 of the inner container 16 is inserted in close contact with the insertion portion 45 and pulled out to the outside of the outer container 34. A cap 60 is screwed and attached to the outlet 14 that is drawn out. The cap 60 is provided with a top surface 62 that closes the spout 14 and a cylindrical side surface 64, and a female screw 66 that is screwed into the male screw 18 of the spout 14 is formed on the inner peripheral surface of the side surface 64. Yes.

  Next, the usage method of the double structure squeeze container 10 of this embodiment is demonstrated. A liquid or jelly-like beverage, ketchup, oil or the like is put into the bag 12 of the inner container 16 and put into the outer container body 36 of the outer container 34. The lid member 42 is screwed into the outer container body 36 and closed. At this time, the spout 14 of the inner container 16 is inserted into the insertion portion 45 of the lid member 12 in an airtight manner and pulled out to the outside of the lid member 42. The cap 60 is screwed into the drawn out outlet 14 and closed.

  And when taking out the contents, the cap 60 is removed, the side surface of the outer container main body 36 is gripped and pressed. By the pressing operation of the outer container main body 36, the air in the outer container main body 36 is compressed to generate a positive pressure, and the bag body 12 of the inner container 16 is pressed through the positive pressure in the outer container main body 36. When the pressure of the content in the bag body 12 is increased, the content tends to come out from the pouring through hole 22 of the spout 14. Then, the check valve member 28 of the dispensing nozzle portion 26 is elastically deformed outward by the pressure of the contents, and a gap is generated between the fitting hole 30 of the check valve member 28 and the dispensing valve protrusion 20, The contents flow out from the gap and are pushed out from the fitting hole 30. At this time, the intake part 51 is closed.

  After removing an arbitrary amount of contents from the double-structured squeeze container 10, when the outer container body 36 is released, the outer container body 36 begins to recover its original volume shape after the outer container body 36 has been pressed. A negative pressure is generated in the container body 36. Then, the inside of the bag 12 of the inner container 16 also becomes negative pressure, the deformation of the check valve member 28 of the dispensing nozzle portion 26 is restored, and the fitting hole 30 of the check valve member 28 becomes the dispensing valve. It comes into close contact with the protrusion 20 again to prevent the flow of air and the backflow of the contents once touched by the outside air.

  Further, since the inside of the outer container main body 36 has a negative pressure, outside air flows from the intake through hole 52 of the intake portion 51 of the lid member 42. At this time, the check valve member 28 that is in close contact with the intake valve protrusion 54 is elastically deformed inward by the air pressure, and a gap is formed between the fitting hole 30 of the check valve member 28 and the intake valve protrusion 54. Then, air flows in from this gap, the negative pressure in the outer container body 36 is released, equilibrates with the external pressure, and returns to its original shape. When the negative pressure disappears, the inflow of air stops, the elastic deformation of the check valve member 28 also returns to its original state, and again comes into close contact with the intake valve protrusion 54 in an airtight manner. When the contents are pushed out, the intake through hole 52 is pressurized from the inside to the check valve member 28 and is brought into close contact with the intake valve protrusion 54 and the like, and is securely sealed.

  According to the double-structure squeeze container 10 of this embodiment, the structure is simple and excellent in productivity, and when the contents are taken out, the contents can be taken out simply by grasping and pressing the outer container main body 36. . Even if the contents remain and the bag 12 is deformed, it can be easily and neatly taken out. Further, the dispensing nozzle portion 26 and the intake portion 51 are formed integrally with the spout 14 and the lid member 42, except for the check valve member 28, and only the check valve member 28 is attached thereto. The number of parts is small, manufacturing is easy, and the backflow prevention function is high. Moreover, it has a simple structure including only the outer container main body 36 and the lid member 42, does not require complicated shapes and parts for the backflow prevention mechanism, has a simple configuration, and is easy to manufacture from this point.

  The outer container body 36 is cylindrical and easy to hold. When pressed, the outer container body 36 is easily elastically deformed by the pressure of the contents, and can easily push out the contents of the bag 12 with a weak force. In the outer container 34, since air flows from the intake through hole 52 after squeezing, it is always restored to its original shape and the next squeezing is possible.

  Furthermore, since the check valve member 28 is made of a flexible elastic body, it can maintain high airtightness, can reliably stop the backflow of contents and air leakage, and can be quickly and reliably injected. Out operation is possible. Further, since the check valve member 28 can be attached simply by being elastically attached, the manufacturing process is simple, and since it is a common part, the production efficiency can be improved and the initial cost can be reduced. Furthermore, since the nozzle part 26 for extraction is attached to the upper end surface 14a of the outlet 14, the content comes out of the nozzle part 26 for extraction, and the residence part which touches air is minimized. It is hygienic and can suppress deterioration of quality.

  Further, if the inner container 16 is of a refill type, it can be easily replaced, which is effective for reducing the container fee and dust.

  In the double structure squeeze container 10 of this embodiment, as shown in FIG. 3, the dispensing nozzle portion 26 may be provided on the lid member 42. In the case of this structure, the spout 67 of the inner container 16 is formed in a cylindrical shape, the upper end surface 67a of the spout 67 is opened to form an opening 68, and a cap (not shown) is attached and attached to the lid member 42. Remove the cap.

  A slightly hard synthetic resin inner plug member 70 is integrally attached to the insertion portion 45 formed on the top surface portion 44 of the lid member 42, or is provided by integral molding. The inner plug member 70 is provided with a cylindrical attachment portion 72 fitted inside the insertion portion 45, and a cylindrical spout 74 having a diameter smaller than that of the attachment portion 72 is provided at the upper end portion of the attachment portion 72. It is formed to continuously protrude upward. On the upper end surface 74a of the spout 74, a partition portion 15, a spout valve projection 20, a through hole 22, and a locking groove 24 are formed as in the spout portion of the dual structure squeeze container 10 of FIG. ing. A check valve member 28 is attached to the locking groove 24, and a dispensing nozzle portion 26 is formed.

  The double structure squeeze container 10 shown in FIG. 3 is used by inserting the upper end surface 67a side of the spout 67 of the inner container 16 into the inner peripheral surface of the mounting portion 72 from the inner side of the lid member 42 and fitting it. Attached.

  The use method of the double-structure squeeze container 10 provided with the inner plug 70 is the same as that in the above embodiment. When the contents are taken out, the outer container main body 36 is pressed, thereby the bag body 12 of the inner container 16. The pressure of the contents is increased, and the contents exit from the opening 68 of the spout 67 of the inner container 16. The content fills in the spout 74 of the inner plug 70, the check valve member 28 of the spout 74 is elastically deformed by the pressure of the content, and the fitting hole 30 of the check valve member 28 of the extraction nozzle portion 26. Extruded from.

  When the outer container body 36 is released after the arbitrary amount of content is taken out, air flows from the intake through hole 52 of the lid member 42, and the pressure in the outer container body 36 is balanced with the external atmospheric pressure. Thus, the deformation of the outer container main body 36 is restored. The elastic deformation of the check valve member 28 also returns to the original state, and the inside of the outer container main body 36 becomes airtight again.

  According to the double structure squeeze container 10 provided with the inner plug member 70, the same effect as that of the above embodiment, and a product of a container comprising the bag body 12 and the spout 14, is a dispensing valve Even the inner container 16 provided with no protrusion can be used as a double structure squeeze container by attaching the spout 67 to the inner plug member 70. The inner plug member 70 may be integrally formed with the insertion portion 45 of the lid member 44.

  In addition, the double structure squeeze container of the present invention is not limited to the above embodiment, and the shape of each valve projection or nozzle member may be an appropriate gap due to the contents or air pressure. It can be changed freely. In addition to the lid member, the air inlet of the outer container may be provided on the side surface or bottom of the outer container body, and can be freely set as long as it does not interfere with handling. Moreover, the connection method of each member should just be reliably airtight, such as what uses screwing, fitting, and airtight packing. The lid member can be provided on the bottom surface of the outer container, for example. In addition to the outlet of the inner container and the inner stopper member of the outer container, the dispensing valve projection is provided integrally with the fitting part of the lid member of the outer container, and the outlet of the inner container is connected to the inside of the fitting part. You may do it. When the dispensing nozzle portion is provided in the inner container as in the above embodiment, it can be replaced together and hygienic when the inner container is replaced, and can be attached and detached as in the modification of the above embodiment. It is economical because it is not necessary to be replaced and is used repeatedly.

  Moreover, it is good also as another components which can fit a nozzle part for an extraction, and an intake part. In this case, a manufacturing process becomes simpler by attaching a check valve member beforehand.

It is a partial fracture perspective view of the double structure squeeze container of one embodiment of this invention. It is a partial expanded longitudinal cross-sectional view of the double structure squeeze container of this embodiment. It is the elements on larger scale of the double structure squeeze container of the modification of this embodiment.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Double structure squeeze container 12 Bag 14 Outlet 16 Inner container 20 Outlet valve protrusion 22 Outlet hole 26 Outlet nozzle part 28 Check valve member 30 Fitting hole 34 Outer container 36 Outer container main body 42 Cover member 45 Insertion part 51 Intake part 54 Intake valve protrusion 52 Intake through hole 60 Cap

Claims (5)

  It consists of an inner container in which a cylindrical spout is provided in a flexible bag and an outer container that covers the inner container and has a squeeze property that can be restored, and a spout nozzle is provided at the spout of the inner container The dispensing nozzle portion has a conical side surface at the outlet end portion and protrudes outwardly, and is formed in the vicinity of the dispensing valve projection. A dispensing through hole communicating between the inside and the outside, a check valve member having elasticity and closing the dispensing through hole and having a fitting hole in close contact with a side surface of the dispensing valve protrusion, The outer container has an insertion part into which the spout of the inner container fits in an airtight state and is inserted to the outside, and an intake part for introducing outside air into the outer container. The intake part has a conical side surface. An intake valve protrusion that protrudes inside the outer container, and is formed in the vicinity of the intake valve protrusion so that the inner and outer sides of the outer container An intake through hole to be passed through, and a check valve member that has elasticity and closes the intake through hole and has a fitting hole in close contact with a side surface of the intake valve protrusion, The check valve member opens when a force is applied to the outer container to squeeze the contents of the inner container, and the check valve member opens when the inside of the outer container has a negative pressure. Double structure squeeze container characterized by opening.   The said outlet and the extraction valve protrusion of the said inner container, and the cover member of the said outer container and the said valve protrusion for intake are each integrally molded by the synthetic resin, The two of Claim 1 characterized by the above-mentioned. Heavy structure squeeze container.   An inner container in which a cylindrical spout is provided in a flexible bag body and an outer container that covers the inner container and has a squeeze property that can be restored, and the outer container includes an inner plug member. A spout of the inner container is fitted to the member, and the inner plug member is provided with a spout nozzle portion in the spout, and the spout nozzle portion has a conical shape at the spout end portion. A pour-out valve protrusion having a convex side surface and projecting outward; a pour-out hole formed in the vicinity of the pour-out valve protrusion and communicating between the inside and the outside of the inner container; and has elasticity A check valve member that closes the pouring hole and has a fitting hole in close contact with the side surface of the pouring valve protrusion is provided, and the outer container has an air intake portion for introducing outside air into the air intake portion. Has a conical side surface and protrudes to the inside of the outer container, and an intake valve protrusion formed in the vicinity of the intake valve protrusion. An intake through hole that communicates with the outside; and a check valve member that has elasticity and closes the intake through hole and has a fitting hole in close contact with a side surface of the intake valve protrusion. Side surfaces of the extraction valve projection and the intake valve projection are in close contact with the inner peripheral surface of the fitting hole of the valve member, and the content of the extraction nozzle portion is applied to the outer container by applying force. The check valve member is opened when the contents of the container are squeezed, and the check valve member is opened when the inside of the outer container is under negative pressure. container.   4. The inner plug member and the dispensing valve projection of the outer container, and the lid member and the intake valve projection of the outer container are each integrally molded of a synthetic resin. Double structure squeeze container. The double structure squeeze according to claim 1, 2, 3, or 4, wherein the extraction valve protrusion and the intake valve protrusion have the same shape, and the check valve member as a common part is attached thereto. container.

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