JP6552366B2 - Double container cap - Google Patents

Description

  The present invention pours out the contents attached to the mouth of the outer layer body and contained in the inner layer body to a double container provided with the volume-reducible inner layer body and the outer layer body on which the inner layer body is disposed inside Relates to a double container cap.

  As a container for containing cosmetics such as lotions, shampoos and rinses, liquid soaps, food seasonings, etc., an inner layer body that accommodates such contents and can be reduced in volume and deformed, and the inner layer body There is known a double container including an outer layer body that forms an outer shell of the container while housing the container inside. In this double container, there is a delamination container (laminated peeling container) formed by laminating the outer layer and the inner layer from the beginning and a container of a type in which the outer layer and the inner layer are separately formed and assembled. The delamination container is composed of an EBM (Extrusion Blow Molding) in which a laminated parison heated and melted is sandwiched between molds and air is blown inside to form a laminated container, and an outer layer and an inner layer. There is a thing by biaxial stretch blow molding which forms a lamination container from the preform (container material) formed in the bottomed cylindrical shape equipped. In such a double container, a cap for a double container is generally provided at the mouth of the outer layer body with a pouring cylinder for pouring out contents and a check valve for preventing the entry of outside air into the inner layer body. Is attached. Then, by pressing the outer layer body, the inner layer body is pressurized via air between the outer layer body and the inner layer body, whereby the valve body of the check valve is opened to pour out the contents. Further, the outer layer body is provided with a through hole for taking in the outside air between it and the inner layer body, and when the outer layer body is restored to the original shape after pouring out, the outside air is taken in from the through hole and the inner layer body is Only the outer layer is restored while the volume is reduced.

  By the way, for the check valve for preventing the outside air from invading the inner layer body in the above-mentioned double container cap, for example, via the three arms radially inward of the cylindrical annular wall as disclosed in Patent Document 1 A plate-shaped valve body to be connected is used. In this type of check valve, the air between the outer layer body and the inner layer body is compressed by pressing the outer layer body, and the pressure rise accompanying this causes the valve body to be pushed up in the direction of the dispensing cylinder to form the inner layer body. The communication port that leads to it can be opened and the contents can be poured out. In addition, when the outer layer is restored to the original shape after pouring out the contents, the pressure of air between the outer layer and the inner layer is reduced, and the valve is closed by the pressure difference and the elastic force of the three arms. Return to position.

JP, 2013-151316, A

  However, in the check valve of the above structure, for example, when the content such as powdery or granular seasoning is filled in the inner layer body, the valve when the valve body in the open state returns to the closed state is a valve The contents enter between the body and the partition wall, and the valve body cannot return to a completely closed state. In such a case, air is introduced into the inner layer body after the discharge of the contents is completed, and therefore, when the outside is humid environment, the moist air remains in the inner layer body, and the powder of the contents is There was a problem that it was easy to absorb moisture and solidify.

  An object of the present invention is to solve such a problem, and an object thereof is to provide a double container capable of easily discharging air that has entered the inner layer with the lid closed. It is providing a cap for.

The present invention is a double container cap that can be attached to a double container body having an inner layer body and an outer layer body in which the inner layer body is disposed,
A cap body having a pouring hole for pouring the contents from the inner layer body capable of volumetric deformation, and attached to the mouth of the double container body;
An openable / closable lid that covers the pouring hole;
A discharge valve that is provided inside the cap body and discharges air in the inner layer to the outside;
An inflow valve that is provided inside the cap body and introduces external air into a space between the outer layer body and the inner layer body,
In the closed state of the said lid, performs discharge of air by the exhaust valve through lid venting means formed in the cover member, and, for double container, characterized in that the introduction of air by the inflow valve It is a cap.

In addition, the discharge valve extends in the inner circumferential direction from a cylindrical side wall-shaped valve wall extending in the vertical direction inside the cap body,
The inflow valve preferably extends from the valve wall in the outer circumferential direction.

  Preferably, the discharge of air by the discharge valve and the introduction of air by the inflow valve are performed through a cap air hole provided in the cap body and the lid venting means.

  Further, the discharge hole and the cap air hole are in a non-communicating state in a space between the cap main body and the lid by a partition provided on at least one of the lid or the cap main body. Is preferred.

  Further, the pouring hole and the cap air hole are provided between the cap body and the lid body by a convex portion which is provided in the lid body and is fitted into the pouring hole when the lid body is closed. It is preferable to be in a non-communicating state in the space.

  In addition, it is preferable that air is discharged by the discharge valve through a discharge hole provided between the content storage space of the double container main body and the discharge valve, and the discharge hole extends in the horizontal direction.

  The double container cap of the present invention makes it possible to easily discharge the air that has entered the inner layer with the lid closed.

It is a front half sectional view showing the state where the double container cap concerning one embodiment of the present invention was attached to the double container. It is a front half cross-sectional view which shows the state which attached the cap for double containers which concerns on one Embodiment of this invention to a double container, and is discharging the content. It is a front judging plane figure showing the state where the double container cap concerning one embodiment of the present invention is attached to a double container, the lid is closed, and the air in the inner layer body is discharged.

  Hereinafter, the present invention will be described more specifically with reference to the drawings.

  FIG. 1 shows a dual container cap 1 according to an embodiment of the present invention attached to a dual container body 2 compatible therewith. In the specification, claims, abstract, and drawings, the side on which the lid 30 described later is located is the upper side (upper side in FIG. 1), and the side on which the bottom 4f is positioned is the lower side (lower side in FIG. 1). And). The double container cap 1 includes a cap body 10, a valve portion 20, and a lid 30. The double container body 2 includes an inner layer body 3 and an outer layer body 4.

  First, the double container body 2 will be described. In this embodiment, the double container main body 2 is formed by laminating the synthetic resin material of the inner layer body 3 and the synthetic resin material of the outer layer body 4 and performing extrusion blow molding on the parison. It is forming. And, ethylene-vinyl alcohol copolymer resin (EVOH) or nylon is used as a material of the inner layer body 3 constituting the double container main body 2. In addition, low density polyethylene (LDPE) or high density polyethylene resin (HDPE) is used as the material of the outer layer body 4, and particularly when LDPE is used, high squeezability can be imparted. However, the present invention is not limited to this embodiment. For example, in the case of forming a peeling container by performing biaxial stretch blow molding, polypropylene (PP) is used as the material of the inner layer 3 and the material of the outer layer 4 is used. Polyethylene terephthalate (PET) may be used. Further, as the material of the inner layer body 3 and the outer layer body 4, other resins having low compatibility with each other can be used. Further, the double container main body 2 may be assembled by separately forming the outer layer body 4 and the inner layer body 3 instead of the laminated peeling container. Also, although not shown, one or more adhesive bands extending in the longitudinal direction between the inner layer body 3 and the outer layer body 4 to partially bond the inner layer body 3 and the outer layer body 4 May be provided.

  The inner layer body 3 is formed so as to be capable of reducing the volume, and in the present embodiment, is obtained by peeling the double container main body 2 formed in the laminated state from the outer layer body 4 . The inner layer body 3 is provided with a storage space S for storing contents inside thereof.

  The outer layer body 4 has a cylindrical mouth peripheral wall 4a connected to a restable flexible trunk 4e and a bottom 4f for closing the lower end of the trunk 4e. A male screw portion 4b is provided on the outer peripheral surface of the mouth peripheral wall 4a. Moreover, the through-hole 4c for taking in air between mutual with the inner-layer body 3 is provided in the opening peripheral wall 4a, and the male screw part 4b is further provided in the up-down direction on the outer peripheral surface which provided the through-hole 4c. The notch 4d is provided.

  Next, the cap body 10 constituting the double container cap 1 will be described. The cap body 10 is provided with an outer peripheral wall 11 surrounding the mouth peripheral wall 4a, and on the inner peripheral surface of the outer peripheral wall 11, a female screw 12 corresponding to the male screw 4b of the mouth peripheral wall 4a is formed. Further, a top wall 19 is integrally connected to the upper portion of the outer peripheral wall 11. The top wall 19 is provided with a central top wall 19a having a circular shape provided with a pouring hole 14 for pouring out contents, a top wall step 19b extending downward from the outer peripheral end of the central top wall 19a, and a top wall step The top wall outer peripheral part 19c extended in the outer peripheral direction from the lower end of 19b and the outer peripheral part step part 19e extended further downward from the outer peripheral end of the top wall outer peripheral part 19c to the upper end of the outer peripheral wall 11 are provided. In this embodiment, the pouring hole 14 has such a size that an appropriate amount of powdery or granular content is discharged when the double container body 2 is tilted. For example, as shown in FIG. A plurality of locations can be provided near the center of the top wall 19a. Moreover, the extraction hole 14 may be provided only in one place. The top wall outer peripheral portion 19 c is provided with a cap air hole 16 for discharging the air from the inner layer 3 and supplying the air to the inner layer 3. The cap air holes 16 may be provided only at one place or, for example, may be provided at a plurality of places at equal intervals on the circumference.

  A hinge 38 is provided at the upper end of the outer peripheral wall 11 in the outer peripheral direction, and a lid 30 described later is coupled to the cap body 10 so as to be opened and closed. In addition, an engagement protrusion 19d is provided on the outer peripheral end of the top wall outer peripheral portion 19c, and undercut engagement is performed on the lid protrusion 37 provided on the inner peripheral surface of the side wall of the lid 30 when the lid 30 is closed. The lid 30 is fixed to the cap body 10. The lower end of the outer peripheral wall 11 is in air-tight contact with the outer layer 4, and a ventilation gap G1 for introducing air into the through hole 4c is provided between the upper end 2b of the opening and the outer peripheral wall 11 There is.

A valve portion 20 is provided inside the cap body 10. The valve unit 20 includes a discharge valve 27 for discharging the air in the inner layer 3 to the outside and a coupling valve 25 having an inflow valve 28 for introducing the outside air into the space between the outer layer 4 and the inner layer 3; And a bulkhead member 24 for covering the cover 25 and securing it to the cap body 10. The coupling valve 25 includes a valve wall 26 extending in the vertical direction and having a cylindrical side shape, and a discharge valve 27 connected to the inner circumferential surface of the valve wall 26 and released by positive pressure in the inner layer 3 to discharge air. It has an inflow valve 28 coupled to the outer peripheral surface of the valve wall 26 and released by negative pressure in the space between the outer layer 4 and the inner layer 3 to introduce air. On the other hand, the partition member 24 includes a fitting wall 24c extending in the vertical direction and having a cylindrical side surface shape, a horizontal partition wall 24b extending from the lower end of the fitting wall 24c in the inner periphery and the outer periphery direction, and upward from the inner periphery end of the horizontal partition wall 24b. And a vertical partition wall 24a extending in the vertical direction. The coupling valve 25 is fixed to the partition wall member 24 by fitting the outer peripheral surface of the valve wall 26 to the inner peripheral surface of the fitting wall 24c and the lower end of the valve wall 26 contacting the horizontal partition wall 24b. The partition member 24 to which the coupling valve 25 is fitted and fixed is fixed to the cap body 10 by fitting the outer peripheral surface of the vertical partition wall 24a to the inner peripheral surface of the top wall step portion 19b. The upper end of the vertical partition 24a is pressed against the lower surface of the central top wall 19a by screwing the cap body 10 to the opening 2a of the double container main body 2 and the lower surface of the horizontal partition 24b is on the upper end 2b of the opening. The valve portion 20 is firmly fixed to the cap body 10 and the double container body 2 by being pressed.

  The discharge valve 27 is a valve that concentrically extends from the inner peripheral surface of the valve wall 26 toward the inner peripheral direction and upward, and the closed state is maintained by the tip of the discharge valve 27 coming into contact with the outer peripheral surface of the vertical partition 24 a. Do. Then, the front end of the discharge valve 27 is lifted upward by the positive pressure in the inner layer 3, and a gap is generated between the front end of the discharge valve 27 and the vertical partition 24 a, so that the discharge valve 27 is opened. The internal air can be discharged through the discharge valve 27.

  A discharge hole 21 extending in the horizontal direction is provided below the discharge valve 27 of the vertical partition 24 a, and the air in the inner layer 3 is guided to the discharge valve 27 through the discharge hole 21. In the present embodiment, since the discharge hole 21 is configured to extend in the horizontal direction, even if the contents are carried in the vertical direction together with air from inside the inner layer 3 when the body 4 e is pressed, It does not reach the discharge valve 27 through the discharge hole 21.

  The air that has passed through the valve in the open state of the discharge valve 27 passes through the radially extending air groove 29 at the upper end of the valve wall 26, and further through the cap air hole 16 provided on the top wall outer peripheral portion 19c. It is discharged from 30 to the outside.

On the other hand, the inflow valve 28 is a valve that extends concentrically outward and downward from the outer peripheral surface of the valve wall 26, and a closed state is achieved by the tip of the inflow valve 28 contacting the inner peripheral surface of the outer peripheral wall 11. maintain. Then, the negative pressure in the space between the outer layer body 4 and the inner layer body 3 causes the tip of the inflow valve 28 to be pushed downward and a gap is generated between the tip of the inflow valve 28 and the outer peripheral wall 11. 28 is in the open state. When in the open state, air introduced from the outside through the lid body 30, the cap air hole 16 and the air groove 29 can be introduced into the space between the outer layer body 4 and the inner layer body 3 through the inflow valve 28.

An inflow hole 23 extending in the vertical direction is provided below the inflow valve 28 in the horizontal partition wall 24b. Air from the cap air hole 16 passes through the inflow valve 28 and the inflow hole 23, and further, a ventilation gap G1 and a groove portion. It is introduced into the space between the outer layer 4 and the inner layer 3 from the through hole 4 c through 4 d. In addition, since the air which passed the ventilation gap G1 is guide | induced to the through-hole 4c also through the clearance gap between the external thread part 4b and the internal thread part 12, the groove part 4d is not necessarily an essential structure.

As shown in FIG. 1, the lid 30 is connected to the upper end of the outer peripheral wall 11 of the cap body 10 via a hinge 38, and covers the pouring hole 14 and the cap air hole 16 by bending the hinge 38. be able to. A lid step 30 a is provided on the side wall of the lid 30, and the outer peripheral step 19 e abuts when the lid 30 is closed. At this time, the engagement protrusion 19 d is undercut engaged with the lid protrusion 37 and the lid 30 is fixed to the cap body 10. A lid air groove 36 is provided inside the side wall of the lid 30 at a position corresponding to the cap air hole 16 from the lid step 30 a to the lid protrusion 37. Then, the air discharged from the cap air hole 16 is discharged to the outside through the cover air groove 36 and the cap air groove 18 described later, and from the outside through the cap air groove 18, the cover air groove 36 and the cap air hole 16. The introduced air is supplied into the space between the outer layer body 4 and the inner layer body 3 via the inflow valve 28.

  In the present embodiment, the lid 30 is integrally formed with the cap body 10 via the hinge 38, but is not limited to this aspect. For example, the lid 30 may be configured separately from the cap body 10, and may be configured to be connected by additional connecting means. Further, the lid 30 may be configured to be attached to the cap main body 10 by a screw or an undercut, and all of these modes refer to a state in which the lid 30 is connected to the cap main body 10.

  The cap air groove 18 is provided at the upper end of the outer peripheral wall 11 at a position facing the lid air groove 36 as described above, and when the lid 30 is closed, the cap air together with the lid air groove 36 While the air discharged from the holes 16 is introduced to the outside, the air is introduced from the outside and supplied to the inflow valve 28 via the cap air hole 16.

  A cylindrical lid convex wall 34 is provided on the lower surface of the lid 30 at a position corresponding to the pouring hole 14. When the lid 30 is closed, the lid 30 enters the pouring hole 14 and pours out. Seal the holes 14. Further, a lid partition wall 32 having a cylindrical side surface shape is provided at a position corresponding to the top wall step 19b on the lower surface of the lid 30, and when the lid 30 is closed, the lid partition 32 abuts on the top wall step 19b. By the lid convex wall 34 and the lid partition 32, when the lid 30 is closed, in the space between the cap main body 10 and the lid 30, the pouring hole 14 and the cap air hole 16 are not communicated. maintain. As a result, the air discharged from the cap air hole 16 by the discharge valve 27 does not go to the injection hole 14, and can be discharged to the outside via the lid air groove 36 and the cap air groove 18. .

  When discharging the contents from the double container cap 1 configured as described above, open the lid 30 as shown in FIG. 2 and change the posture of the double container main body 2 from the standing posture to the inclined posture. Thus, the powdery or granular content falls by its own weight and is discharged from the pouring hole 14. At this time, the body 4e of the outer layer 4 is pressed, and the volume of the inner layer 3 is reduced and deformed via air between the outer layer 4 and the inner layer 3 so that the inside pressure of the inner layer 3 becomes positive pressure. Can be discharged from the pouring hole 14 more vigorously. When the inner layer 3 is reduced in volume by pressing the body 4e, the outer layer 4 is restored to its original shape by its own rigidity, so a negative state is generated between the outer layer 4 and the inner layer 3 Pressure is generated. Due to this negative pressure, the inflow valve 28 is displaced in the direction of the double container main body 2 to be in an open state, so that external air is guided to the inflow valve 28 via the cap air hole 16 and the air groove 29. The air having passed through the inflow valve 28 is further introduced into the space between the outer layer body 4 and the inner layer body 3 from the through hole 4c via the inflow hole 23, the ventilation gap G1, and the groove 4d.

  By the way, when the contents are discharged from the pouring hole 14, air is introduced into the inner layer body 3 from the pouring hole 14 in place of the discharged contents. At this time, when the outside is a humid environment, moist air enters the inner layer body 3.

  When the discharge of the contents is completed, the user returns the double container body 2 from the inclined posture to the upright posture shown in FIG. Then, the lid body 30 is closed, and the inner layer body 3 is deformed and deformed by pressing the body portion 4e of the outer layer body 4 as indicated by an arrow in FIG. As a result, although the inner layer 3 has a positive pressure inside, since the lid 30 is closed, the air in the inner layer 3 is not discharged from the pouring hole 14 as shown by a broken arrow in FIG. To the discharge valve 27 from the discharge hole 21. Due to the positive pressure in the inner layer body 3, the discharge valve 27 is displaced upward and opened, and the air in the discharge valve 27 passes through the air groove 29 and the cap air hole 16, and further, the lid air groove 36 and the cap air groove 18. Discharged to the outside through the As a result, the air in the inner layer 3 is properly discharged to the outside, so that the powder or the like of the contents does not absorb moisture and solidify. When the pressing of the body portion 4e is stopped, the body portion 4e pressed by the rigidity of the outer layer body 4 returns to its original shape, and therefore the outer layer body 4 and the inner layer body 3 are removed from the through hole 4c by the volume of the discharged air. Air is taken into the space between

  When the air in the inner layer 3 is discharged, part of the powdery content may move upward with the air. However, since the air of the inner layer 3 moves upward and then reaches the discharge valve 27 via the discharge hole 21 extending in the horizontal direction, the contents with large specific gravity move upward by the inertia force and move the discharge hole 21 I can not pass. Therefore, only the air in the inner layer body 3 is discharged to the outside, and the contents are not unintentionally discharged.

  As described above, according to the present embodiment, the inside of the inner layer 3 is pressed by pressing the trunk 4 e of the outer layer 4 in a state in which the lid 30 of the double container cap 1 is closed after discharging the contents. The air can be discharged from the lid air groove 36. As a result, even when a check valve is not provided between the containing space S of the inner layer 3 and the pouring hole 14 assuming storage of the powdery or granular contents, the inner layer 3 can be discharged when the contents are discharged. Since the air that has entered the inside can be easily discharged after the lid 30 is closed after discharging, the powder of the contents does not absorb moisture and solidify.

  Further, according to the present embodiment, the volume of the inner layer 3 can be kept small in accordance with the remaining amount of the contents by discharging the air inside the inner layer 3. Thereby, for example, when the content is a tablet, the tablet does not move greatly inside the inner layer body 3, so that the tablet can be prevented from being chipped or broken.

  Further, according to the present embodiment, the discharge valve 27 for discharging the air in the inner layer 3 to the outside, and the inflow valve 28 for introducing the outside air into the space between the inner layer 3 and the outer layer 4 are integrated. Therefore, the number of parts can be reduced, and the cost of the double container cap 1 can be reduced.

  Further, according to the present embodiment, the discharge of the air to the outside by the discharge valve 27 and the introduction of the air from the outside by the inflow valve 28 are performed through the common cap air hole 16 and the lid air groove 36. Configured. Thereby, discharge and introduction of air can be performed with a simple configuration.

  Further, according to the present embodiment, when the lid 30 is closed, the space between the cap main body 10 and the lid 30 is provided by the lid partition wall 32 and the lid convex wall 34 provided on the lower surface of the lid 30. The pouring hole 14 and the cap air hole 16 were configured to be in a non-communication state. Thereby, the air discharged | emitted from the cap air hole 16 does not wrap around the extraction hole 14. FIG.

  Further, according to the present embodiment, the air is discharged from the storage space S to the outside by the discharge valve 27 through the discharge hole 21 extending in the horizontal direction provided inside the cap body 10. . Thereby, only air can be selectively discharged from the inner layer body 3 to the outside without discharging the contents.

  In addition, the above-mentioned place only shows the embodiment of the present invention, and various modifications can be added within the scope of the claims. For example, the lid air groove 36 provided in the lid 30 as a lid ventilation means does not necessarily have a groove shape, and may be provided as a hole penetrating the lid 30, for example.

  Moreover, in this embodiment, although the discharge valve 27 and the inflow valve 28 were integrated and provided, it is not limited to this aspect. The exhaust valve 27 and the inflow valve 28 may be provided as separate parts, and the cap air hole 16, the lid air groove 36 and the cap air groove 18 may be provided separately for discharge and inflow. May be In addition, the discharge valve 27 and the inflow valve 28 do not necessarily have to be configured concentrically, and any shape that functions as a one-way valve can be adopted. And, it should be understood that such an arrangement is within the scope of the present invention.

Reference Signs List 1 double container cap 2 double container body 2a mouth 2b mouth upper end 3 inner layer 4 outer layer 4a mouth peripheral wall 4b male thread 4c through hole 4d groove 4e body 4f bottom 10 cap body 11 outer circumferential wall 12 female thread DESCRIPTION OF SYMBOLS 14 Outlet 16 Cap air hole 18 Cap air groove 19 Top wall 19a Center top wall 19b Top wall step part 19c Top wall outer peripheral part 19d Engagement protrusion 19e Outer peripheral part step part 20 Valve part 21 Outlet hole 23 Inflow hole 24 Partition member 24a Vertical partition wall 24b Horizontal partition wall 24c Fitting wall 25 Joint valve 26 Valve wall 27 Drain valve 28 Inflow valve 29 Air groove 30 Lid 30a Lid step part 32 Lid bulk (partition)
34 Lid convex wall (convex)
36 Lid air groove (lid ventilation means)
37 Lid projection 38 Hinge G1 Ventilation gap S Storage space

Claims (6)

A double container cap attachable to a double container body having an inner layer body and an outer layer body on which the inner layer body is disposed,
A cap body having a pouring hole for pouring the contents from the inner layer body capable of volumetric deformation, and attached to the mouth of the double container body;
An openable / closable lid that covers the pouring hole;
A discharge valve that is provided inside the cap body and discharges air in the inner layer to the outside;
And an inflow valve provided inside the cap body for introducing external air into the space between the outer layer body and the inner layer body,
In the closed state of the said lid, performs discharge of air by the exhaust valve through lid venting means formed in the cover member, and, for double container, characterized in that the introduction of air by the inflow valve cap. The discharge valve extends in the inner peripheral direction from a cylindrical side wall extending vertically in the cap body.
The said inflow valve is a cap for double containers of Claim 1 extended in the outer peripheral direction from the said valve wall.   The double container cap according to claim 1 or 2, wherein the discharge of air by the discharge valve and the introduction of air by the inflow valve are performed through a cap air hole provided in the cap body and the lid ventilation means.   The space between the cap main body and the lid is brought out of communication with each other by a partition provided on at least one of the lid or the cap main body. The double container cap according to 3.   In the space between the cap main body and the lid, the projection hole and the cap air hole are provided in the lid and a convex portion fitted into the pouring hole when the lid is closed. The cap for double containers of Claim 3 or 4 made into a non-communication state.   The air is discharged by the discharge valve through a discharge hole provided between a storage space for the contents of the double container body and the discharge valve, and the discharge hole extends in a horizontal direction. The double container cap according to any one of the preceding claims.

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