JP6541539B2 - 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 A double container is known which comprises an outer layer which encloses the inner side and which forms the shell of the container. 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. In addition, the delamination container is made by sandwiching a heated and melted laminated parison with a mold and blowing air into the interior to form a laminated container by EBM (Extrusion Blow Molding: extrusion blow molding), 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 being reduced in volume.

  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 flat plate-like valve body 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 communicating port can be opened to pour out the contents. 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 get in between the body and the septum and the valve body can not 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 is a problem that it becomes 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 dual container cap attachable to a dual container body having an inner layer body and an outer layer body having the inner layer body disposed inside,
A cap body having a pouring hole for pouring out the contents from the inner layer body which can be reduced in volume, and mounted on the mouth of the double container body;
An openable and closable lid covering the pouring hole;
The lid includes a lid body connected to the cap body, a plug body supported so as to be vertically displaceable with respect to the lid body, and one direction capable of discharging the air in the inner layer to the outside. With a valve,
When the lid is closed from the open state, the plug does not fit into the fitting hole provided in the cap body, and the air in the inner layer can be discharged to the outside through the one-way valve. In the discharge position,
By fitting the plug into the fitting hole from the discharge position, the plug moves to a storage position where air in the inner layer can not be discharged to the outside. It is.

  Moreover, it is preferable that the said fitting hole is the said pouring hole.

Further, the stopper, the has a fittable fitting wall into the fitting hole, the periphery of the fitting wall fitting wall concentrically before SL one-way valve is integrally formed Is preferred.

  In addition, when the lid is closed from the open state, the plug contacts with the fitting hole to engage with the lid body and maintain the lid at a position having a gap between the lid and the fitting hole. Preferably.

  Preferably, the one-way valve is in contact with the upper surface of the lid.

  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.

(A) is front sectional drawing which shows the state (at the time of distribution) which attached the cap for double containers which concerns on 1st Embodiment of this invention to the double container, (b) is a bottom part of Fig.1 (a) Right side view of FIG. It is front sectional drawing of the cap (storage position) for double containers which concerns on 1st Embodiment of this invention. It is a front sectional view showing the state where the lid of the double container cap according to the first embodiment of the present invention is opened. In the cap for double containers which concerns on 1st Embodiment of this invention, it is front sectional drawing which shows the state (discharge position) which closed the cover body after discharge of the content. It is front sectional drawing to which the cover part was expanded in FIG. It is front sectional drawing which shows the state (storage position) which attached the double container cap which concerns on 2nd Embodiment of this invention to the double container. It is an expanded sectional view of the cap part for double containers in FIG. It is front sectional drawing which shows the state at the time of use of the cap for double containers which concerns on 2nd Embodiment of this invention. The cap for double containers which concerns on 2nd Embodiment of this invention WHEREIN: It is front sectional drawing which shows the state (discharge position) which closed the cover body after discharge of the content. It is front sectional drawing which shows the state (storage position) which attached the double container cap which concerns on 3rd Embodiment of this invention to the double container. It is an expanded sectional view of the cap part for double containers in FIG. The cap for double containers which concerns on 3rd Embodiment of this invention WHEREIN: It is front sectional drawing which shows the state (discharge position) which closed the cover body after discharge of the content.

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

  FIG. 1 (a) shows a dual container cap 1 according to a first embodiment of the present invention mounted on a dual container body 2 compatible therewith. In the present specification, claims, abstract, and drawings, the side on which the lid 30 described later is located is the upper side (the upper side in FIG. 1A), and the side on which the bottom 4f is located is the lower side (FIG. 1). Lower side in (a)). The double container cap 1 includes a cap body 10 and a lid 30. Further, the double container main body 2 is configured by the inner layer body 3 and the outer layer body 4. FIG. 1 (a) shows the state of the double container main body 2 at the time of distribution, and a sealing material 2d is attached to the upper end 2b of the mouth so that contents do not enter the cap main body 10 at the time of distribution. It is done. Then, the user removes the cap body 10 from the double container body 2 before use, peels off the sealing material 2 d, fixes the cap body 10 to the double container body 2 again, and starts use.

  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 materials of the inner layer body 3 and the outer layer body 4, other resins having low mutual compatibility can be used. Further, the double container main body 2 may be assembled by separately forming the outer layer body and the inner layer body instead of the laminated peeling container.

  As shown in FIG. 1 (a), the inner layer body 3 is formed to be capable of reducing the volume, and in the present embodiment, the outer layer body 4 is formed with respect to the double container main body 2 formed in the laminated state. It is obtained by exfoliating from. The inner layer body 3 is provided with an accommodation space S for accommodating the 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. As shown in FIG. 2, on the outer peripheral surface of the mouth peripheral wall 4a, a male screw portion 4b for screwing engagement with a female screw portion 12 provided on the outer peripheral wall 11 of the cap main body 10 described later is provided. As described above, the double container main body 2 can firmly fix the cap main body 10 by the male screw portion 4 b. Further, a neck ring 4g is provided below the male screw 4b.

  In FIG. 1 (a), when the outer layer 4 is restored to its original shape by its own stiffness after pressing the body 4e of the outer layer 4 to reduce the volume of the inner layer 3, the outer layer 4 and the inner layer The space between body 3 is under negative pressure. At this time, air is introduced into the space between the outer layer 4 and the inner layer 3 from the slits 4s formed in the pinch-off portion of the bottom 4f formed by blow molding, as shown in FIG. 1 (b).

  Next, the cap main body 10 which comprises the double container cap 1 is demonstrated using FIG. The cap main body 10 is provided with an outer peripheral wall 11 surrounding the opening peripheral wall 4a, and an internal thread 12 is formed on the inner peripheral surface of the outer peripheral wall 11 for threading engagement with the external thread 4b of the opening peripheral wall 4a. . Further, a top wall 19 is integrally connected to the upper portion of the outer peripheral wall 11. Then, the male screw 4b is screwed to the female screw 12, and the upper end 2b of the mouth of the double container main body 2 is brought into contact with the lower surface of the top wall 19 of the cap main body 10. It can be firmly fixed to the mouth 2 of 2. A pouring cylinder 14c is disposed at the central portion of the top wall 19, and pouring holes 14a and 14b for pouring the contents are provided on the upper end surface 14e of the pouring cylinder 14c. Further, an engagement projection 19d is provided at the outer peripheral end of the top wall 19, and the lid projection 37 provided on the inner circumferential surface of the lid peripheral wall 33 of the lid 30 when the lid 30 is closed Then, the lid 30 is fixed to the cap body 10. Further, a top wall step 19 e is formed extending in the vertical direction from the outer peripheral end of the top wall 19 toward the upper end of the outer peripheral wall 11. A hinge 38 a is provided at the upper end of the outer peripheral wall 11 in the outer peripheral direction, and a lid 30 described later is openably connected to the cap main body 10.

  In the present embodiment, the pouring hole 14a is provided at the center of the upper end face 14e formed at the upper end of the pouring cylinder 14c, and a plurality of pouring holes 14b slightly smaller in diameter than the pouring hole 14a are poured out. It is provided at equal intervals around the hole 14a. The size relationship and arrangement of the diameters of the pouring holes 14a and 14b are not limited to the above embodiment, and can be appropriately selected according to, for example, the size or the like of the powdery or granular contents. Moreover, the pouring hole 14b is not necessarily an essential thing in this embodiment, and it may be comprised so that only the pouring hole 14a may be provided in one place.

  As shown in FIG. 2, the lid 30 is connected at the upper end of the outer peripheral wall 11 of the cap body 10 via a hinge 38a, and can fold out the pouring holes 14a and 14b by bending the hinge 38a. . A lid step 30a is provided on the peripheral wall (lid peripheral wall 33) of the lid 30, and when the lid 30 is closed, the top wall step 19e abuts. At this time, the lid projection 37 is undercut and engaged with the engagement projection 19 d so that the lid 30 is fixed to the cap body 10. A plug body 32 provided with a valve body 32d constituting a one-way valve capable of discharging the air in the inner layer 3 to the outside is fitted to the central cylinder 36 provided at the central portion of the upper wall 31 of the lid 30 ing. The plug body 32 has a sliding cylinder 32 b extending in the vertical direction at the center, and the sliding cylinder 32 b is configured to be vertically movable by sliding on the inner peripheral surface of the central cylinder 36.

  The plug body 32 further has an outer peripheral wall 32c having a cylindrical side surface shape on the outer side of the sliding cylinder 32b, and the above-mentioned valve body 32d extends obliquely upward from the lower end of the outer peripheral wall 32c. . A valve storage cylinder 35 is provided outside the central cylinder 36 in the upper wall 31, and the tip of the valve body 32 d described above abuts on the inner peripheral surface of the valve storage cylinder 35. The lower ends of the central cylinder 36 and the valve housing cylinder 35 are connected by the valve bottom wall 39, and the lower surface of the valve bottom wall 39 is on the top of the pouring cylinder 14c when the lid 30 is closed. A plurality of ventilating projections 39a that contact the end face 14e are provided on the circumference. The space between the valve bottom wall 39 formed by the venting projection 39a and the upper end surface 14e of the dispensing cylinder 14c forms an air flow path from the dispensing hole 14b to the valve body 32d as described later. Form.

  On the lower surface of the upper wall 31 of the lid 30, an engagement cylinder 34 having a cylindrical side surface shape suspended in the vertical direction is provided. When the lid 30 is closed, the engagement projection 34a provided on the inner circumferential surface near the lower end of the engagement cylinder 34 undershoots on the engagement projection 14d provided on the outer circumferential surface near the upper end of the pouring cylinder 14c. The lid 30 is fixed to the cap body 10 by the cut engagement.

  In the present embodiment, a plug lid 40 for holding the plug 32 so as not to slip out of the lid 30 is provided on the upper wall 31 of the lid 30. The plug opening 43 provided at the center of the plug lid 40 has a diameter slightly larger than the diameter of the outer peripheral wall 32 c of the plug 32 and does not abut on the outer peripheral wall 32 c of the plug 32. The valve body 32d is covered from above. Thereby, the plug 32 can be held so as not to come out of the lid 30 while being movable in the vertical direction.

  The plug lid 40 is connected to the upper end of the lid peripheral wall 33 through the hinge 38b, and the plug lid projection 40b and the central wall projection 41a are respectively the engagement projection 31d and the storage cylinder projection. By undercut engagement with 35 a, the plug lid 40 is firmly fixed to the upper wall step 31 e of the outer peripheral portion of the upper wall 31. In addition, since fixing to the upper wall 31 of the plug lid 40 is not assumed to be removed except during cleaning, the strength of the undercut engagement is increased so that the user does not accidentally open it. Is desirable.

  In the present embodiment, the lid 30 is integrally formed with the cap main body 10 through the hinge 38a, 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.

  FIG. 2 shows the state of the storage position in which the air in the inner layer 3 is not discharged from the pouring holes 14a and 14b. Specifically, the sliding projection 32f of the plug body 32 fitted in the inner peripheral surface of the central cylinder 36 and the pouring hole 14a without a gap and provided near the lower end of the sliding cylinder 32b. Can be maintained under the position of FIG. 2 because the underside is fixed to the outlet hole 14a, the air in the inner layer 3 may pass upward through the side surface of the sliding cylinder 32b. Absent. Thus, the air in the inner layer 3 does not leak to the outside, and a sealed state suitable for storage can be maintained.

  FIG. 3 shows a state in which the bent hinge 38a is returned to open the lid 30, and the plug 32 fitted in the pouring hole 14a is removed. When discharging the contents from the double container cap 1 configured as described above, the double container main body 2 is rotated from the standing posture in FIG. 3 counterclockwise to change the posture to the inclined posture. The powdery or granular contents are dropped by their own weight and discharged from the pouring holes 14a and 14b. 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 holes 14a and 14b 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. By this negative pressure, external air is introduced into the space between the outer layer 4 and the inner layer 3 from the slit 4s of the pinch-off portion of the bottom 4f.

  By the way, when the contents are discharged from the pouring holes 14a and 14b, air is introduced into the inner layer 3 from the pouring holes 14a and 14b instead of the discharged contents. At this time, in the case where the outside is in a humid environment, moist air will enter into the inner layer body 3.

  When the discharge of the contents is completed, the user returns the double container main body 2 from the inclined posture to the upright posture shown in FIG. Then, by closing the lid 30, the lower end of the sliding cylinder 32b of the plug 32 is abutted against the inner peripheral surface of the pouring hole 14a and lifted, and the plug 32 moves to the position shown by the solid line in FIG. Do. In FIG. 4, the position of the plug 32 at the storage position is indicated by a two-dot chain line.

  Next, the user presses the body 4 e of the outer layer 4 to reduce and deform the inner layer 3. Thereby, the inside of the inner layer 3 has a positive pressure, and the air in the inner layer 3 passes upward from the pouring hole 14 b as shown by the broken line arrow in FIG. 5 and then passes around the ventilation protrusion 39 a And the gap between the outer peripheral surface of the sliding cylinder 32b and the inner peripheral surface of the central cylinder 36 is directed upward. In the middle of this gap, ventilation ribs 32e and 36a are alternately provided in the circumferential direction on both the sliding cylinder 32b and the central cylinder 36, and the air from the inner layer 3 can be used for the ventilation ribs 32e and 36a. Exit upward through the gap. It is not necessary to provide both of the ventilation ribs 32e and 36a, and only one of them may be provided. The air having passed through the ventilation ribs 32e, 36a further passes through the outer peripheral side of the central cylinder 36 and reaches the valve body 32d. Since the valve body 32d constituting the one-way valve is displaced upward by the positive pressure in the inner layer 3, a gap is generated between the valve body 32d and the inner peripheral surface of the valve housing cylinder 35, and air is the valve body 32d. Is discharged from the plug opening 43 to the outside through the outer peripheral side of the plug. In addition, in FIG. 5, the position of the stopper 32 in a storage position is shown by the dashed-two dotted line.

  When the pressing of the body 4 e is stopped, the valve body 32 d abuts on the inner circumferential surface of the valve storage cylinder 35 again. Thus, the plug 32 functions as a one-way valve to discharge air from the inner layer 3 while preventing air from flowing into the inner layer 3 from the outside. 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. At this time, since the body 4e pressed by the rigidity of the outer layer 4 returns to the original shape, the slits 4s formed in the bottom 4f by the volume of the discharged air cause the outer layer 4 and the inner layer 3 to Air is taken into the space between them.

  When the user finishes discharging the air in the inner layer 3, the user presses the top wall 32a of the plug 32 downward. As a result, the plug 32 returns to the position shown in FIG. 2 so that the inside of the inner layer 3 can maintain a sealed state suitable for storage.

  As described above, according to the present embodiment, the stopper 32 is configured to be slidable in the vertical direction with respect to the central cylinder 36 of the lid 30, and when the lid 30 is closed from the opened state, the stopper While the body 32 abuts on the pouring hole 14a without abutting, the air in the inner layer 3 can be discharged to the outside through the one-way valve by the positive pressure by the pressing of the outer layer 4 while the plug 32 is The air in the inner layer body 3 can not be discharged to the outside by pressing it and fitting it in the pouring hole 14a. As a result, when the lid 30 is closed, the air in the inner layer 3 can be easily discharged, and the inflow of air from the outside can be prevented. Therefore, the powder or the like of the contents does not absorb moisture and solidify. In addition, by pressing the plug 32, the air discharging function can be stopped to make the sealed state suitable for storage.

  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. By this, for example, when the content is a tablet, the tablet does not move significantly inside the inner layer body 3, and therefore it is possible to prevent chipping, cracking and the like of the tablet.

  Further, according to the present embodiment, since the plug 32 and the valve 32d of the one-way valve are integrally provided, it is possible to receive the above-mentioned advantage while reducing the number of parts.

  In the present embodiment, the sliding cylinder 32b of the plug 32 is configured to be able to be fitted in the pouring hole 14a, but is not limited to this aspect. The plug 32 may be configured to be able to be fitted into another fitting hole provided in the cap body 10.

  FIG. 6 shows a state in which the double container cap 5 according to the second embodiment of the present invention is attached to the double container main body 2 compatible therewith.

  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 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. Moreover, the double container main body 2 can fix the cap main body 50 firmly by the male screw part 4b.

  In FIG. 6, after pressing the body 4e of the outer layer 4 to reduce the volume of the inner layer 3, when the outer layer 4 is restored to its original shape by its own rigidity, the outer layer 4 and the inner layer 3 There is negative pressure in the space between At this time, air is introduced into the space between the outer layer 4 and the inner layer 3 from the through holes 4 c provided in the mouth peripheral wall 4 a.

  Next, the cap main body 50 which comprises the double container cap 5 is demonstrated using FIG. Here, the cap main body 50 will be described focusing on the structural difference from the cap main body 10 of the first embodiment. The cap body 50 is provided with a pouring cylinder 54 at the center of the top wall 59, and constitutes a pouring hole 54a for discharging the contents inside the inner layer 3 to the outside. Further, an inner peripheral side protrusion 54 b for undercut engagement of a plug body 62 described later is provided on the inner peripheral surface of the pouring barrel 54. In the top wall step 59e at the outer peripheral end of the top wall 59, an outside air introduction hole 58 for introducing outside air into the inner layer 3 is provided. Furthermore, a ventilation gap G1 is provided between the mouth upper end 2b and the outer peripheral wall 51, and the air introduced from the outside air introduction hole 58 passes through the ventilation gap G1 and the groove 4d to the outer layer from the through hole 4c. It is led to the space between the body 4 and the inner layer 3. Since the air having passed through the ventilation gap G1 is guided to the through hole 4c via the gap between the male screw 4b and the female screw 52, the groove 4d is not necessarily an essential component. An annular projection 59f is provided on the lower surface of the top wall 59, and when the cap main body 50 is screw-engaged with the double container main body 2, it comes into contact with the upper end 2b of the mouth to seal the double container main body 2 airtight. Secure the sex.

  Next, the lid 60 will be described with reference to FIG. The lid 60 is also described focusing on the structural difference from the lid 30 of the first embodiment.

  In the lid 60 of the present embodiment, as shown in FIG. 7, an upper wall step 61a is provided at the center of the upper wall 61, and a plug opening 65b is formed in the bottom wall 65 extending from the lower end of the upper wall step 61a. It is provided. The plug 62 is inserted into the plug opening 65b, and the outer peripheral surface of the sliding cylinder 62a of the plug 62 is configured to be slidable in the vertical direction in FIG. 7 in the plug opening 65b. An engaging protrusion 62d is provided in the vicinity of the lower end of the sliding cylinder 62a, and at the storage position of the double container cap 5, as shown in FIG. Engage undercut.

  A one-way valve 67 for discharging the air in the inner layer 3 to the outside is attached to the outer peripheral surface of the engagement cylinder 64 which descends downward from the upper wall stepped portion 61a. Further, on the inner peripheral surface of the engagement cylinder 64, a plurality of ventilation grooves 64a for guiding the air discharged from the pouring hole 54a to the one-way valve 67 are provided in the circumferential direction. The one-way valve 67 has a valve portion peripheral wall 67b attached to the outer peripheral surface of the engagement cylinder 64, and a valve body 67a extending outward and downward from the lower end of the valve portion peripheral wall 67b. In the storage position shown in FIG. 7, the tip of the valve body 67a abuts on the top surface of the top wall 59. A lid step 60a is provided in the vicinity of the lower end of the inner peripheral surface of the lid peripheral wall 63, and the air passing through the one-way valve 67 is provided on the inner peripheral surface of the lid peripheral wall 63 and the lid step 60a. A lid air groove 66 is provided to discharge the air outside.

  In the state of the storage position shown in FIG. 7, the sliding cylinder 62a of the plug 62 fits on the inner peripheral surface of the pouring hole 54a without any gap, and the pouring hole 54a is completely closed by the plug 62. ing.

  In order to eject the contents from the double container cap 5 configured as described above, FIG. 8 returns the bent hinge 68 and opens the lid 60 to fit in the pouring hole 54a. A state is shown in which the stopper 62 is removed and the double container main body 2 is rotated counterclockwise from the standing posture of FIG. 7 to change the posture to the inclined posture. As a result, the powdery or granular content drops by its own weight and is discharged from the pouring hole 54a. 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 54a 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. External air is introduced into the space between the outer layer 4 and the inner layer 3 from the through hole 4 c by this negative pressure.

  By the way, when the contents are discharged from the pouring hole 54a, air is introduced from the pouring hole 54a into the inner layer 3 instead of the discharged contents. At this time, in the case where the outside is in a humid environment, moist air will enter into 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, by closing the lid 60, the lower end of the sliding cylinder 62a of the plug 62 comes in contact with the inner peripheral surface of the pouring hole 54a and is lifted, and the plug 62 moves upward. Thereby, the engaging projection 65a provided on the inner peripheral surface of the plug opening 65b engages with the engaging recess 62e provided on the outer peripheral surface of the sliding cylinder 62a, and the lower end of the sliding cylinder 62a The state of contact with the outlet hole 54a is maintained. In the inner peripheral surface of the pouring hole 54a, an inner peripheral groove portion 54d is provided as an air passage.

  Next, the user presses the body 4 e of the outer layer 4 to reduce and deform the inner layer 3. As a result, the pressure in the inner layer 3 becomes positive pressure, and the air in the inner layer 3 is discharged from the inner circumferential groove 54d as shown by the broken line arrow in FIG. The valve 67 is reached. The tip of the valve body 67a is displaced in the outer peripheral direction by the positive pressure in the inner layer 3, so that air passes through the gap between the valve body 67a and the top surface of the top wall 59, and the lid air groove 66 is further formed. It is discharged to the outside via

  Then, when the pressing of the body 4e is stopped, the valve body 67a abuts on the upper surface of the top wall 59 again. Thus, while the air in the inner layer 3 is discharged by the one-way valve 67, it is possible to prevent the air from flowing into the inner layer 3 from the outside. 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 user finishes discharging the air in the inner layer 3, the user presses the top wall 62b of the plug 62 downward. As a result, the stopper 62 returns to the position shown in FIG. 7, so that the inside of the inner layer 3 can maintain a sealed state suitable for storage.

  As described above, according to the present embodiment, when the lid 60 is closed from the opened state, the plug 62 abuts on the pouring hole 54 a and is displaced upward, It engaged and it comprised so that the state which the lower end of the sliding cylinder 62a contact | abutted to the pouring hole 54a is maintained. As a result, the air inside the inner layer 3 can be discharged from the inner peripheral groove portion 54d provided on the inner peripheral surface of the pouring hole 54a. Further, by disposing the one-way valve 67 behind the inner circumferential groove 54d, the air in the inner layer 3 can be discharged to the outside, while the inflow of air from the outside can be prevented. Therefore, the powder or the like of the contents does not absorb moisture and solidify. Further, by pressing the plug body 62, the air discharge function can be stopped to make the air-tight state suitable for storage.

  In the present embodiment, the lid air groove 66 as the ventilation means is provided on the lid 60 side, but the present invention is not limited to this aspect. The venting means may be provided on the cap body 50 side.

  FIG. 10 shows a state in which the double container cap 7 according to the third embodiment of the present invention is attached to the double container main body 2 compatible therewith.

  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. As shown in FIG. 10, on the outer peripheral surface of the mouth peripheral wall 4a, there is provided a male screw 4b for threading engagement with a female screw 72 provided on an outer peripheral wall 71 of a cap main body 70 described later. As described above, the double container main body 2 can firmly fix the cap main body 70 by the male screw portion 4 b. Further, a neck ring 4g is provided below the male screw 4b.

  In FIG. 10, when the outer layer 4 is restored to its original shape by its own rigidity after pressing the body 4e of the outer layer 4 to reduce the volume of the inner layer 3, the outer layer 4 and the inner layer 3 There is negative pressure in the space between At this time, air is introduced into the space between the outer layer 4 and the inner layer 3 from a slit formed in the pinch-off portion of the bottom 4 f formed by blow molding.

  Next, the cap main body 70 constituting the double container cap 7 will be described with reference to FIG. Here, the cap main body 70 will be described focusing on the difference in configuration from the cap main body 10 of the first embodiment. The cap body 70 forms a pouring hole 74 a for discharging the contents inside the inner layer 3 to the outside by a pouring cylinder 74 provided at the center of the top wall 79.

  Next, the lid 80 will be described with reference to FIG. The lid 80 will also be described focusing on the structural difference from the lid 30 of the first embodiment.

  In the lid 80 of the present embodiment, as shown in FIG. 11, an upper wall stepped portion 81a is provided at the center of the upper wall 81, and a plug opening 85b is formed in the bottom wall 85 extending from the lower end of the upper wall stepped portion 81a. It is provided. The plug 82 is inserted into the plug opening 85b, and the outer peripheral surface of the sliding cylinder 82a of the plug 82 is configured to be movable in the vertical direction in FIG. 11 in the plug opening 85b. A fitting protrusion 82d is provided on the outer peripheral surface of the sliding cylinder 82a, and in the storage position of the double container cap 7, as shown in FIG. Fit on the inner circumferential surface of In the outer peripheral surface of the sliding cylinder 82a, the portion other than the fitting projection 82d is not in contact with the plug opening 85b and the inner peripheral surface of the pouring cylinder 74, and the air in the inner layer 3 can pass through. There is a gap. Further, a plug stepped portion 82e is provided on the upper portion of the slide cylinder 82a, and abuts on an upper wall stepped portion 81a provided on the lid 80 in the storage position.

  Around the top wall 82b of the plug body 82, a valve body 82c constituting a one-way valve is provided. The valve body 82 c is formed concentrically with the dispensing cylinder 74 and the sliding cylinder 82 a, and is formed as a part of the plug body 82. In addition, the valve body 82c does not necessarily have to be formed concentrically with the dispensing cylinder 74 and the sliding cylinder 82a, and it is possible to adopt any configuration that can cause the valve body 82c to function as a one-way valve. it can.

  In the state of the storage position shown in FIG. 11, the fitting projection 82d provided on the outer peripheral surface of the sliding cylinder 82a is fitted on the inner peripheral surface of the pouring hole 74a, and the plug stepped portion 82e is on the upper side. The pouring hole 74a is completely closed by the plug 82 in order to abut on the wall step 81a.

  In order to discharge the contents from the double container cap 7 configured as described above, the lid 80 is opened from the state of FIG. 11 and the plug 82 fitted to the dispensing cylinder 74 is removed. By changing the posture of the double container main body 2 from the standing posture to the counterclockwise direction in FIG. 11 to change the posture to the inclined posture, the powdery or granular contents fall by their own weight and are discharged from the pouring hole 74a. 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 further vigorously discharged from the pouring hole 74a. 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. External air is introduced into the space between the outer layer 4 and the inner layer 3 from the slit of the pinch-off portion of the bottom 4 f by this negative pressure.

  By the way, when the contents are discharged from the pouring hole 74a, air is introduced from the pouring hole 74a into the inner layer 3 instead of the discharged contents. At this time, in the case where the outside is in a humid environment, moist air will enter into the inner layer body 3.

  When the discharge of the contents is completed, the user returns the double container main body 2 from the inclined posture to the upright posture shown in FIG. Then, when the lid 80 is closed, the fitting projection 82d of the sliding cylinder 82a of the plug 82 abuts on the upper end of the pouring hole 74a, and the plug 82 is lifted and moved upward. Thereby, the fitting protrusion 82d gets in between the upper end of the pouring cylinder 74 and the lower surface of the bottom wall 85. In addition, since the valve body 82c forming the one-way valve has a shape that hangs in the outer peripheral direction in advance, the tip end abuts on the upper wall 81 even in the state of FIG. 12 in which the plug 82 is lifted upward. There is.

  Next, the user presses the body 4 e of the outer layer 4 to reduce and deform the inner layer 3. Thereby, the inside of the inner layer 3 has a positive pressure, and the fitting protrusion 82d in contact with the upper surface of the ejection cylinder 74 is lifted slightly upward to form a gap through which the air in the inner layer 3 can pass. Be done. Then, the air in the inner layer 3 reaches the valve body 82c of the one-way valve through the gap between the sliding cylinder 82a, the pouring cylinder 74 and the plug opening 85b, as shown by the broken line arrow in FIG. Do. Then, since the valve body 82c which has been in contact with the upper surface of the upper wall 81 is lifted slightly upward by the positive pressure in the inner layer body 3, the air passes through the gap between the valve body 82c and the upper wall 81 Discharged into

  When the pressing of the body 4 e is stopped, the valve body 82 c abuts on the upper surface of the upper wall 81 again. Thus, air can be prevented from flowing into the inner layer 3 from the outside while discharging the air in the inner layer 3 by the one-way valve. 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 user finishes discharging the air in the inner layer 3, the user presses the top wall 82b of the plug 82 downward. As a result, the stopper 82 returns to the position shown in FIG. 11, so that the inside of the inner layer 3 can maintain a sealed state suitable for storage.

  As described above, according to the present embodiment, the valve body 82c of the one-way valve for discharging the air inside the inner layer 3 to the outside and preventing the air from flowing from the outside is the upper wall of the lid 80. It comprised so that it might contact | abut on the upper surface of 81. As a result, the one-way valve can be formed with a small space so that the air in the inner layer 3 can be easily discharged, while the inflow of air from the outside can be prevented. Therefore, the powder or the like of the contents does not absorb moisture and solidify. Further, by pressing the plug 82, the air discharge function can be stopped to make the air-tight state suitable for storage.

  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. And, it should be understood that such an arrangement is within the scope of the present invention.

1,5,7 double container cap 2 double container body 2a mouth 2b mouth upper end 2d seal material 3 inner layer 4 outer layer body 4a mouth peripheral wall 4b male thread 4c through hole 4d groove 4e body 4f bottom 4g neck Ring 4s Slit 10, 50, 70 Cap body 11, 51, 71 Outer peripheral wall 12, 52, 72 Female screw portion 14a, 14b, 54a, 74a Injection hole 14c, 54, 74 Injection cylinder 14d, 54c, 74c Engaging projection Part 14e Upper end face 19, 59, 79 Top wall 19d, 59d, 79d Engaging projection 19e, 59e, 79e Top wall step 30, 60, 80 Lid 30a, 60a, 80a Lid step 31, 61, 81 Upper wall (lid body)
31d engaging projection 31e, 61a, 81a upper wall step 32, 62, 82 plug 32a, 62b, 82b top wall 32b, 62a, 82a sliding cylinder 32c outer peripheral wall 32d, 67a, 82c valve body 32e ventilation rib 32f Engaging projection 33, 63, 83 Lid peripheral wall (Lid body)
34, 64, 84 engagement cylinder 34a engagement projection 35 valve storage cylinder (lid body)
35a Storage cylinder projection 36 Central cylinder (lid body)
37, 69, 87 Lid projection 38a, 38b, 68, 88 Hinge 39 Valve bottom wall 39a Venting projection 40 Plug lid 40b Plug lid projection 41a Central wall projection 43 Plug opening 54b Inner circumferential protrusion Section 54d Inner circumferential groove 58 External air introduction hole 59f Annular projection 62d Engaging projection 62e Engaging recess 64a Venting groove 65, 85 Bottom wall 65a Engaging projection 65b, 85b Plug opening 66 Cover air groove 67 One direction Valve 67b Valve part peripheral wall 82d Mating projection 82e Plug body step G1 Ventilation gap S Housing space

Claims (5)

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 out the contents from the inner layer body which can be reduced in volume, and mounted on the mouth of the double container body;
An openable and closable lid covering the pouring hole;
The lid includes a lid body connected to the cap body, a plug body supported so as to be vertically displaceable with respect to the lid body, and one direction capable of discharging the air in the inner layer to the outside. With a valve,
When the lid is closed from the open state, the plug does not fit into the fitting hole provided in the cap body, and the air in the inner layer can be discharged to the outside through the one-way valve. In the discharge position,
By fitting the plug into the fitting hole from the discharge position, the plug moves to a storage position where air in the inner layer can not be discharged to the outside. .   The double container cap according to claim 1, wherein the fitting hole is the pouring hole. The plug has the fitting hole to fit fittable walls, around the fitting wall fitting wall concentrically before SL one-way valve is integrally formed, wherein The double container cap according to item 1 or 2.   When the lid is closed from the open state, the plug is engaged with the lid body by abutting on the fitting hole, and is maintained at a position having a gap between the lid and the fitting hole A cap for a double container according to any one of claims 1 to 3.   The double container cap according to any one of claims 1 to 4, wherein the one-way valve abuts on the top surface of the lid.

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