JP6164937B2 - Airless container - Google Patents

Description

  The present invention relates to an airless container that discharges a content liquid stored in a storage part without replacing it with air, that is, while reducing the internal volume of the storage part, and an inner plug adapter used for the airless container.

  The airless container is a container that discharges the content liquid stored in the storage unit while reducing the volume (internal volume) of the storage unit without replacing it with air. The airless container has, for example, a container body including an outer container having shape retention and a flexible flexible inner bag that is detachably mounted inside the outer container. The contents liquid is filled and accommodated as an accommodating part, and the contents liquid is discharged while the inner bag is reduced in volume by the action of a pump device or the like attached to the mouth part of the container body, while being formed in the outer container. A so-called delamination container (double peeling container) is known, in which the outer shape of the container body can be maintained by sending air between the inner bag and the outer container through the air inlet hole. Yes.

  In addition, as another airless container, for example, an inner dish is provided inside the container body having shape retaining property so as to be slidable up and down, and the content liquid is filled with the upper part of the inner dish as a storage portion. The so-called pople container that is accommodated and discharges the content liquid while lowering the volume of the accommodating part by raising the inner tray by the action of the pump device, and the flexibility filled and accommodated with the content liquid. There is known a so-called tube pump container or the like in which a pump device is attached to one end portion of a tube container and the content liquid is discharged while the volume of the tube container is reduced and deformed by the action of the pump device.

  According to these airless containers, it is possible to efficiently discharge the content liquid even when, for example, a high-viscosity content liquid that easily adheres to the inner surface of the storage portion is stored.

  On the other hand, in recent years, for plastic containers that contain various liquids and other contents, it has become possible to reduce the environmental burden. For example, a discharge device such as a pump device that discharges the content liquid, By forming the container body having the content liquid storage portion so as to be replaceable, the expensive discharge device can be used for a long time without being discarded each time, and material costs and manufacturing costs are reduced. ing.

  For example, various liquid containers with a pump have been developed that make it possible to change the pump device that discharges the content liquid to the bottle container for changing the content liquid stored in the container (for example, Patent Document 1). reference). In the refill bottle for a liquid container with a pumping pump disclosed in Patent Document 1, an inner plug is fitted to the opening of the upper end of the refill bottle to seal the inner solution storage portion. A cylinder receptacle is formed to insert the cylinder part of the cylinder, and a suction port with a sealing film for sealing is formed at the lower end of the cylinder receptacle. When the pump device is inserted into the cylinder receptacle, The suction port is opened by breaking the sealing film at the tip of the cylinder part of the pump. This prevents germs and foreign substances from being brought into the bottle when changing the pump device.

JP 2003-292073 A

  In an airless container that discharges the content liquid stored in the storage unit while reducing the internal volume of the storage unit without replacing it with air, particularly when a high-viscosity content liquid is stored, the storage unit is filled and stored. When the air remaining in the head space formed between the liquid level of the content liquid and the opening at the upper end (tip) of the container body is mixed into the contained content liquid, for example, during the transportation of the container, Since the mixed air is difficult to escape and stays for a long time, the problem of air biting in which the liquid content mixed with air is discharged from the pump device is likely to occur during use of the container.

  For this reason, in the state where the airless container is commercialized, the volume of the head space formed between the liquid level of the content liquid filled and accommodated in the accommodating portion and the opening at the upper end of the container main body is reduced as much as possible. It is desirable. However, in the refill bottle of Patent Document 1, the volume of the head space cannot be sufficiently reduced, and the suction port is opened by the seal film being broken by the tip of the cylinder portion. If the pump device is removed from the plug during use, air can easily enter the housing from the suction port that has been broken and opened, and when the container is used with the pump device attached again, there is a problem of air biting. Is likely to occur.

  The present invention sufficiently reduces the volume of the head space formed between the liquid level of the content liquid and the opening at the upper end of the container body before the content liquid is used. An airless container capable of effectively avoiding the occurrence of air bite when discharging the content liquid by preventing the air from entering the housing portion even when the pump device is removed during use, and the airless container An object of the present invention is to provide an inner plug adapter used for the above.

  The present invention is an airless container that discharges the content liquid stored in the storage portion of the container body by a pump device attached to the mouth of the container body while reducing the internal volume of the storage portion. In a state before use, a hollow inner plug adapter is fitted inside the mouth part of the container body, and a mounting member is attached to cover the mouth part, and the inner plug adapter is A cylindrical portion having an outer diameter similar to the inner diameter of the mouth portion of the container body, a cylindrical portion longer than the length of the mouth portion, a lower end portion of the tubular portion being closed, and a cylinder portion of the pump device Or it consists of the bottom part provided with the on-off valve which can insert a tube part. The on-off valve is an on-off valve that does not allow liquid to pass through at the bottom in either the state where the cylinder or tube portion of the pump device is not inserted or the state where the pump device is attached to the neck. The inner plug adapter achieves the above object by providing an airless container attached to the mouth portion with the fitting portion being pushed in and the bottom portion being disposed below the mouth portion. It is what.

  Further, the present invention is a hollow inner plug adapter used for the airless container, and has a fitting portion having an outer diameter similar to the inner diameter of the mouth part of the container body, and is a cylindrical part longer than the length of the mouth part. And a bottom portion provided with an opening / closing valve into which the cylinder portion or tube portion of the pump device can be inserted, which closes the lower end portion of the cylindrical portion, and the cylinder portion or tube portion of the pump device includes the opening / closing valve. The above-described object is achieved by providing an inner plug adapter that is an on-off valve that does not allow liquid to pass through at the bottom, in either the uninserted state or the state in which the pump device is mounted on the neck. Is.

  Furthermore, this invention achieves the said objective by providing the container with a pump by which the pump apparatus is mounted | worn with the said neck part of the container main body of the said airless container as said mounting member.

  According to the airless container of the present invention or the inner plug adapter used in the airless container, the volume of the head space formed between the liquid level of the content liquid and the opening at the upper end of the container body is sufficiently reduced. Even when the user removes the pump device in the middle of use, it is possible to effectively avoid the occurrence of an air bite when discharging the content liquid by preventing air from entering the housing portion.

It is a schematic sectional drawing explaining the structure of the delami container to which the pump apparatus was attached which is an airless container which concerns on preferable 1st Embodiment of this invention. It is principal part schematic sectional drawing of the airless container which concerns on preferable 1st Embodiment of this invention. (A) is sectional drawing of an inside plug adapter, (b) is sectional drawing along AA of (a). It is explanatory drawing of the process of attaching an inner stopper adapter and a pump apparatus to the mouth part of a container main body. It is a principal part schematic sectional drawing explaining the structure of the delamination container for changing clothes which is an airless container which concerns on preferable 2nd Embodiment of this invention, and the pump apparatus is attached later. It is sectional drawing which illustrates the other form of an inside plug adapter. (A), (b) is the schematic sectional drawing which illustrates further another form of an inside plug adapter. It is an airless container of other preferred embodiments of the present invention, (a) is a schematic partial sectional view of a pople container, and (b) is a schematic partial sectional view of a tube pump container. (A)-(d) is the schematic perspective view which illustrates further another form of the cylindrical part of an inside plug adapter.

  An airless container 10 according to a first preferred embodiment of the present invention shown in FIG. 1 includes an outer container 11 having a shape-retaining property, and a flexible inner bag 12 detachably attached to the inside of the outer container 11. And a pump device 14 is attached in advance. The container main body 13 is a so-called delamination container (double peeling container), and is filled and stored with the content liquid with the inner bag 12 as a storage portion. In the airless container 10, the liquid of the inner bag 12 is discharged while the volume (inner volume) of the inner bag 12 is reduced by the action of the pump device 14 mounted on the neck 13 a of the container body 13, while the volume of the inner bag is reduced. Thus, the external shape of the outer container 11, that is, the container main body 13 can be maintained by sucking air between the inner bag 12 and the outer container 11 through the air inflow hole formed in the bottom of the outer container 11. In the airless container 10 of the first embodiment, the upper end portion of the inner bag 12 is in a state before the content liquid is used by attaching a later-described inner plug adapter 15 to the mouth portion 13 a of the container body 13. The volume of the head space formed in the inner bag 12 is effectively reduced, and even when the user removes the pump device 14 during use, the function of preventing air from flowing into the inner bag 12 is provided.

  And the airless container 10 of this 1st Embodiment reduces and reduces the internal volume of the inner bag 12, without replacing the content liquid accommodated in the accommodating part by the inner bag 12 of the container main body 13 with air. However, as shown in FIGS. 1 and 2, the delamination container is a delamination container that is discharged by the pump device 14 attached in advance to the mouth 13a of the container body 13, and in the state before the content liquid is used, A stopper adapter 15 is fitted inside the mouth portion 13a of the container body 13, and a pump device 14 as a mounting member is attached so as to cover the mouth portion 13a. The inner plug adapter 15 has a fitting part 17a having an outer diameter similar to the inner diameter of the mouth part 13a of the container body 13, preferably at the upper end part, and a tubular part 17 longer than the length of the mouth part 13a, and the tubular part 17 The bottom part 19 is provided with an opening / closing valve 18 into which the tube part 14a of the pump device 14 can be inserted. The on-off valve 18 can be opened and closed while allowing the tube portion 14a of the pump device 14 to remain inserted in a liquid-tight state, in other words, while maintaining a state in which the liquid does not leak before, during or after the operation. It is a valve. In other words, the on-off valve 18 is an on-off valve that does not allow liquid to pass through the bottom portion 19 in either the state where the tube portion 14a of the pump device 14 is not inserted or the state where the pump device 14 is attached to the mouth portion 13a. It has become. The inner plug adapter 15 is pushed in until the fitting portion 17a is fitted (not including the half-fitted state), and the bottom portion 19 is disposed further below the mouth portion 13a to the mouth portion 13a. It is attached. The fitting part 17a is pushed into the mouth part 13a until the upper end face of the inner plug adapter 15 is preferably arranged flush with or substantially flush with the upper end face of the mouth part 13a.

  In addition, the container of the first embodiment is preferable for accommodating a liquid having a viscosity of about 5000 to 100000 mPa · s, such as an emulsion, cream, gel-like preparation, and has a viscosity of about 10,000 to 60000 mPa · s. It is more preferable for containing the liquid. In particular, it is most preferable in the case of a high-viscosity content liquid of about 20000 to 50000 mPa · s. That is, if the content liquid filled and stored in the storage unit 12 is a high-viscosity content liquid, when air is mixed in the content liquid, the mixed air is difficult to escape and stays in the interior for a long time. During use of the container, an air bite that is discharged while the content liquid is mixed with air easily occurs. According to the airless container 10 of the first embodiment, the volume of the head space can be sufficiently reduced, and the air inside the inner bag 12 is made to flow so as not to flow into the inner bag 12. Since it can be kept in a small amount, it is effective because the occurrence of air bite can be effectively avoided when such a highly viscous content liquid is accommodated.

  In the first embodiment, the inner plug adapter 15 that is fitted inside the mouth 13a of the container body 13 has an outer diameter fitting portion 17a similar to the inner diameter of the mouth 13a of the container body 13 as described above. Preferably, the upper end portion of the tubular portion 17 longer than the length of the mouth portion 13a and the tube portion 14a of the pump device 14 that closes the lower end portion of the tubular portion 17 are maintained in a liquid-tight state before and after insertion. And a bottom portion 19 provided with an open / close valve 18 that can be operated, and further, on the outer peripheral surface of the cylindrical portion 17, from the lower end portion (lower end) to at least the vicinity of the upper end of the mouth portion (the upper end in the first embodiment). The air discharge groove 21 extending in the vertical direction is formed.

  The cylindrical portion 17 is a molded product made of a synthetic resin such as PP or PE, for example, and as shown in FIGS. 3A and 3B, the container body 13 extends over substantially the entire length in the axial direction. A hollow cylindrical shape having an outer diameter similar to the inner diameter of the neck portion 13a is provided. As a result, the upper end portion of the cylindrical portion 17 is a fitting portion 17 a having an outer diameter similar to the inner diameter of the mouth portion 13 a of the container body 13. The length of the cylindrical portion 17 is longer than the length (height) of the mouth portion 13a of the container body 13, and for example, the upper end surface thereof is arranged flush with the upper end surface of the mouth portion 13a. Until the bottom portion 19 is pushed into the inside of the mouth portion 13a until the bottom portion 19a is joined to the bottom portion of the mouth portion 13a. It arrange | positions below a liquid level (refer FIG. 2).

  In the first embodiment, as described above, the outer peripheral surface of the cylindrical portion 17 of the inner plug adapter 15 extends in the vertical direction from the bottom to the vicinity of the upper end (upper end) to discharge the air. A groove 21 is formed. In the first embodiment, a pair of air discharge grooves 21 are provided facing away from the diameter direction of the cylindrical portion 17. By providing the air discharge groove 21 on the outer peripheral surface of the cylindrical portion 17, when the inner plug adapter 15 is fitted into the mouth portion 13a of the container body 13 during manufacture, While letting the air in the head space inside the housing portion of the inner bag 12 formed between the opening at the upper end of the mouth 13a of the container body 13 to the outside through the air discharge groove 21, it extends over substantially the entire length. It becomes possible to push in the cylindrical part 17 which has the outer diameter similar to the internal diameter of the mouth part 13a along the inner peripheral surface of the mouth part 13a.

  In the first embodiment, the bottom portion 19 provided with the on-off valve 18 is a molded product made of a synthetic resin having elasticity such as silicon, NBR, etc., formed as a member different from the cylindrical portion 17. Is arranged in the lower part, and has a hollow, generally inverted conical shape with an open top surface. The bottom portion 19 is formed so that the inclined peripheral surface portion having a substantially inverted conical shape has a steep slope downward and extends substantially perpendicular to the bottom surface at the top portion. In addition, a plurality of slits 22 extending in the radial direction are cut and formed in the lower end portion of the peripheral surface portion located at the center portion of the bottom portion 19 so that the lower end portion of the bottom portion 19 where the plurality of slits 22 are formed is formed. The tube portion 14a of the pump device 14 is made to function as an on-off valve 18 that is inserted while maintaining a liquid-tight state. The bottom portion 19 is formed by joining the peripheral portion of the upper bottom surface of the substantially inverted conical shape to the peripheral portion of the lower end opening of the cylindrical portion 17 through heat fusion, an adhesive, or the like, so that the lower end portion of the cylindrical portion 17 is It is attached to the cylindrical portion 17 as a unit in the closed state.

  In the first embodiment, it is preferable that the inner plug adapter 15 includes the bottom portion 19 including the on-off valve 18 in the state where the upper end surface of the cylindrical portion 17 is disposed flush with the upper end surface of the mouth portion 13a. It has the length arrange | positioned below the liquid level of the content liquid accommodated in the bag 12, or a liquid level. By disposing the bottom portion 19 including the on-off valve 18 below the liquid level of the content liquid or below the liquid level, the volume of the head space can be effectively reduced. For example, the container is accommodated during transport of the container. It is possible to reduce the mixing of air into the content liquid as much as possible.

  In the first embodiment, the airless container 10 is commercialized in a state where the pump device 14 is attached and fixed to the mouth part 13 a of the container body 13. In the manufacturing process for commercializing the airless container 10, the inner plug adapter 15 is placed inside the mouth portion 13 a of the container body 13, for example, so that the upper end surface of the cylindrical portion 17 is flush with the upper end surface of the mouth portion 13 a. After the fitting, the pump device 14 as the mounting member has the cap portion 16, for example, the female thread ridge formed on the inner peripheral surface of the skirt portion 16 b of the cap portion 16 on the outer peripheral surface of the mouth portion 13 a. It is attached to the mouth part 13a of the container main body 13 by being screwed onto the formed male thread ridge and fastened to the mouth part 13a (see FIG. 4).

  The pump device 14 has a function of discharging the content liquid pumped from the storage portion by the inner bag 12 through the tube portion 14a from the discharge port 14c at the tip of the pump head 14b by repeating the pressing operation to the pump head 14b. This is a known discharge device having a cylinder 14d and the like in which a piston is disposed.

  In the first embodiment, in the step of attaching the pump device 14 to the container main body 13, as shown in FIG. 4, a tube portion 14a and a cylinder are mounted on the mouth portion 13a of the container main body 13 in which the inner plug adapter 15 is fitted. In a state where 14d is disposed below, the pump device 14 integrated with the cap portion 16 is inserted from above. When the pump device 14 is inserted from above, the tube portion 14a is inserted into the on-off valve 18 while keeping the liquid-tight state while expanding the on-off valve 18 provided on the bottom 19 of the inner plug adapter 15. Then, it is pushed into the content liquid filled and accommodated in the accommodating portion of the inner bag 12. Here, the on-off valve 18 has such a strength that it is not deformed by the internal pressure when the tube portion 14a is pushed. When the tube portion 14a is pushed into the content liquid, the liquid level of the content liquid rises by the thickness of the tube portion 14a, and the volume of the head space, which is an excess space, can be further reduced. Become. Further, as the liquid level of the content liquid rises, the air in the head space is discharged to the outside through the air discharge groove 21 formed on the outer peripheral surface of the inner plug adapter 15.

  The tube portion 14a is further pushed into the content liquid, and the cap portion 16 of the pump device 14 is fastened to the mouth portion 13a of the container main body 13 so that the pump device 14 is attached and fixed to the container main body 13 via the cap portion 16. . When the pump device 14 is attached and fixed to the container body 13, the top surface portion 16a of the cap 16 is in airtight contact with the upper end surface of the cylindrical portion 17 of the inner plug adapter 15 and the upper end surface of the mouth portion 13a. No. 10 will be commercialized in a state where air does not flow into the head space whose volume has been reduced.

  And according to the airless container 10 of the present embodiment having the above-described configuration, the volume of the head space formed between the liquid level of the content liquid and the opening at the upper end of the mouth part 13a of the container body 13 is sufficient. In addition, even when the user removes the pump device 14 during use, it is effective to prevent air from entering the accommodating portion of the inner bag 12 and to cause air bite when discharging the content liquid. Can be avoided.

  That is, according to the airless container 10 of the first embodiment, the inner plug adapter 15 is fitted inside the mouth portion 13a of the container body 13 in a commercialized state, and the inner plug adapter 15 14a has a bottom portion 19 provided with an on-off valve 18 through which the liquid 14 can be inserted in a liquid-tight manner, and the inner plug adapter 15 is attached to the mouth portion 13a in a state where the bottom portion 19 is disposed below the mouth portion 13a. Therefore, the inner plug adapter 15 fitted inside the mouth portion 13a allows the portion including the inside of the mouth portion 13a to be excluded from the head space, thereby sufficiently reducing the volume of the head space. Moreover, the on-off valve 18 provided at the bottom 19 of the inner plug adapter 15 allows the tube portion 14a to be inserted in a liquid-tight state and is easily restored to its original state even when the tube portion 14a is pulled out. Since the lower end portion of the inner plug adapter 15 can be closed by returning to the above, even when the user removes the pump device 14 during use, air is prevented from entering the inner bag 12 by the closed on-off valve 18. It becomes possible to do. By these, when the user who purchased the airless container 10 discharges the content liquid using the container, it is possible to effectively avoid the occurrence of the air bite.

  FIG. 5 shows a main part of an airless container 10 ′ according to the second preferred embodiment of the present invention. In the airless container 10 ′ of the second embodiment, a cap 16 ′ to which the pump device is not attached is mounted as a mounting member on the mouth portion 13a ′ of the container body 13 ′. After removing 16 ', it is commercialized as a delamination container (double peeling container) for changing clothes which is used by changing the pump device 14 having the cap portion 16 described above.

  That is, in the airless container 10 ′ of the second embodiment, as shown in FIG. 5, the hollow inner plug adapter 15 ′ is fitted inside the mouth part 13a ′ of the container body 13 ′, and the mouth part A cap 16 'is attached to cover 13a'. The inner plug adapter 15 ′ has a fitting portion 17a ′ having an outer diameter similar to the inner diameter of the mouth portion 13a ′ of the container body 13 ′, preferably at the upper end portion, and a cylindrical portion 17 ′ longer than the length of the mouth portion 13a ′. And a bottom portion 19 ′ having an on-off valve 18 ′ that closes the lower end portion of the tubular portion 17 ′ and allows the tube portion 14a of the pump device 14 to be inserted while maintaining a liquid-tight state. An air discharge groove 21 ′ is formed on the outer peripheral surface of the portion 17 ′ from the lower end portion (lower end) to the upper end. The inner plug adapter 15 ′ is pushed in until the fitting portion 17a at the upper end of the cylindrical portion 17 ′ is fitted into the mouth portion 13a ′, and the bottom portion 19 ′ is disposed below the mouth portion 13a ′. It is attached to the mouth part 13a '.

  Further, in the airless container 10 ′ of the second embodiment, the inner plug adapter 15 ′ has a bottom 19 ′ that closes the lower end of the cylindrical portion 17 ′ having a circular flat plate shape, and a peripheral portion thereof. Is joined to the peripheral portion of the lower end opening of the cylindrical portion 17 ′ through heat fusion, an adhesive, or the like, so that the lower end portion of the cylindrical portion 17 ′ is closed and integrated with the cylindrical portion 17 ′. It is attached. The circular flat plate-shaped bottom portion 19 ′ is formed by cutting and forming a cross-shaped slit 22 ′ extending in the radial direction at the center thereof, while keeping the tube portion 14a of the pump device 14 in a liquid-tight state. An on-off valve 18 ′ is provided for insertion.

  Further, in the airless container 10 ′ of the second embodiment, the inner plug adapter 15 ′ is disposed above the bottom portion 19 ′ having the on-off valve 18 ′ and spaced from the bottom portion 19 ′. 'Has been equipped. In the center of the auxiliary bottom 23 ′, a cross-shaped slit 22 ′ extending in the radial direction is cut in the same manner as the bottom 19 ′, so that the tube portion 14a of the pump device 14 is kept in a liquid-tight state. An auxiliary opening / closing valve 24 ′ is provided through which the tube portion 14a can be inserted. The auxiliary on-off valve 24 ′ allows liquid to pass above the bottom 19 ′ in both the state where the tube portion 14 a of the pump device 14 is not inserted and the state where the pump device 14 is attached to the mouth portion 13 a ′. There is no on-off valve. Accordingly, the inner plug adapter 15 ′ includes an auxiliary opening / closing valve 24 ′ that allows the tube portion 14 a of the pump device 14 to be inserted in a liquid-tight state above the bottom portion 19 ′ having the opening / closing valve 18 ′.

  According to the airless container 10 ′ of the second embodiment, when the pump device 14 is changed and used, the inner plug adapter 15 ′ fitted inside the mouth part 13 a ′ causes the inside of the mouth part 13 a ′. It is possible to sufficiently reduce the volume of the head space by removing the portion including the head space, and even when the pump device 14 is removed, the closed on-off valve 18 ′ and the auxiliary on-off valve 23 ′ The same operation effect as the airless container 10 of the first embodiment is achieved so that air does not enter the housing portion of the inner bag 12 ′.

  Further, according to the airless container 10 ′ of the second embodiment, in particular, the inner plug adapter 15 ′ has a double-structured valve provided with an auxiliary on-off valve 23 ′ above the bottom portion 19 ′ having the on-off valve 18 ′. Since the mechanism is provided, when the user attaches or removes the pump device 14, it is possible to prevent air from entering the housing portion of the inner bag 12 ′ from the inner plug adapter 15 ′ in a more stable state. It becomes possible.

  The present invention is not limited to the above-described embodiments, and various modifications can be made. For example, the inner plug adapter does not necessarily have an outer diameter similar to the inner diameter of the neck portion of the container body over the entire length of the cylindrical portion. In addition, it is not always necessary to form an air discharge groove on the outer peripheral surface of the inner plug adapter, but it is preferable to form an air discharge groove extending from the lower end portion to at least the vicinity of the upper end portion. When the air discharge groove is not provided, for example, as shown in FIG. 6, the inner plug adapter 50 does not form the air discharge groove on the outer peripheral surface of the cylindrical part 51, and the outer peripheral surface of the cylindrical part 51 is A tapered surface 51b that is gradually reduced in diameter from the fitting portion 51a of the upper end portion having the same outer diameter as the inner diameter of the neck portion of the neck can also be used. According to the inner plug adapter 50 shown in FIG. 6, when this is fitted into the mouth portion of the container body, the air in the head space is passed through the gap between the inner peripheral surface of the mouth portion and the tapered surface 51b. Thus, the cylindrical portion 51 can be pushed in along the inner peripheral surface of the mouth portion while escaping to the outside.

  Although the bottom part 19 provided with the on-off valve 18 can be formed in a shape other than the curved shape as shown in FIG. 3 (see FIG. 5), by inserting the bottom part 19 into the curved shape, the insertion of the inner plug adapter is possible. As a result, an internal pressure is applied to the liquid, and the air in the head space can be easily removed while the tube portion can be easily inserted.

  Further, the inner plug adapter is not necessarily required to form a bottom portion having an on-off valve as a member different from the cylindrical portion and to join the bottom portion integrally with the bottom end opening of the cylindrical portion. As shown in FIGS. 7A and 7B, the inner plug adapter 60 can be formed as an integrally molded product in which the cylindrical portion and the bottom portion are simultaneously molded.

  Furthermore, the airless container of the present invention does not necessarily need to be a delamination container. For example, as shown in FIGS. 8 (a) and 8 (b), the inner plug adapter 70 is placed inside the container body having shape retention. A middle pan is provided so as to be slidable up and down, and the content liquid is filled and accommodated with the upper portion of the middle pan as a housing portion, and the housing portion is raised by raising the middle pan by the action of the pump device. A pump device is provided at the neck of the container body of a pople container (see (a)) or one end of a flexible tube container in which the content liquid is filled and accommodated so that the content liquid is discharged while reducing the volume. The present invention is fitted to the mouth part of the container body of the tube pump container (see (b)), which is adapted to discharge the content liquid while reducing the volume of the tube container by the action of the pump device. of It is also possible to Ares container. Even if the opening / closing valve provided at the bottom of the inner plug adapter 70 has a configuration that allows the cylinder portion of the pump device to be inserted in a liquid-tight state when the tube portion is not provided, for example. good.

  Furthermore, the cylindrical part of the inner plug adapter can be formed in various shapes as shown in FIGS. The cylindrical part of FIG. 9A is provided with a linear rib extending in the circumferential direction on the outer peripheral surface, and a fitting portion is formed by this linear rib. In the cylindrical part of FIG. 9A, the air tightness can be improved by packing on the pump device side. Two or more air discharge grooves can be provided. The cylindrical portion in FIG. 9B is provided with linear ribs extending in the circumferential direction on the outer peripheral surface, and the bottom surface of the air discharge groove is inclined so that the depth decreases from the lower end portion toward the upper end portion. This is a tapered surface. The cylindrical part of FIG. 9C is provided with a rod-shaped rib extending in the vertical direction on the outer peripheral surface, and a fitting portion is formed by this linear rib. In the cylindrical portion of FIG. 9 (c), a fitting groove having a shape corresponding to a linear rib is formed on the inner surface of the mouth part of the container body so as to extend in the vertical direction. The linear rib can be fitted to the mouth part of the container body. The cylindrical portion of FIG. 9D is provided with an annular rib extending outward from the peripheral edge of the upper end opening and extending in the circumferential direction, and this annular rib is placed on the upper end surface of the mouth portion. It is pushed in until it is pushed, and the fitting part is fitted to the mouth part. In the cylindrical portion of FIG. 9 (d), the annular rib portion is sandwiched between the top surface portion of the cap and the upper end surface of the mouth portion by attaching the cap, and is in close contact with the upper end surface of the mouth portion. It is supposed to be.

10, 10 'airless container 11 outer container 12, 12' inner bag (container)
13, 13 'Container body 13a, 13a' Mouth part 14 Pump device (mounting member)
14a Tube portion 14d Cylinder 15, 15 'Inner plug adapter 16 Cap portion 16' Cap (mounting member)
16a, 16a 'Top surface portion 17, 17' Cylindrical portion 17a, 17a 'Fit portion 17b, 17b' Upper end opening 18, 18 'On-off valve 19, 19' Bottom portion 21 Air discharge groove 22 Slit 23 'Auxiliary bottom portion 24' Auxiliary On-off valve

Claims (9)

There is an airless container that discharges the content liquid stored in the storage part of the container body by a pump device attached to the mouth part of the container body while reducing the internal volume of the storage part,
In a state before the content liquid is used, a hollow inner plug adapter is fitted inside the mouth part of the container body, and a mounting member is attached to cover the mouth part,
The inner plug adapter has a fitting portion having an outer diameter similar to the inner diameter of the mouth portion of the container body, and closes a tubular portion longer than the length of the mouth portion, and a lower end portion of the tubular portion, It consists of a bottom part with an on-off valve into which the cylinder part or tube part of the pump device can be inserted,
The on-off valve is an on-off valve that does not allow liquid to pass through at the bottom in either the state where the cylinder or tube portion of the pump device is not inserted or the state where the pump device is attached to the neck. Yes,
Wherein in the plug adapter, until said fitting portion is fitted is pushed into the mouth neck part, the bottom part comprising the on-off valve, while disposed below the mouth neck part, bottom and provided with the on-off valve Is an airless container attached to the mouth portion in a state of being disposed below the liquid level of the content liquid accommodated in the accommodating portion . The airless container according to claim 1 , wherein a bottom portion including the on-off valve is made of a synthetic resin having elasticity and has a slit, thereby functioning as the on-off valve .   The airless container according to claim 1 or 2, wherein an air discharge groove is formed on the outer peripheral surface of the cylindrical portion of the inner plug adapter from the lower end portion to at least the vicinity of the upper end.   The inner plug adapter includes an auxiliary opening / closing valve into which the cylinder portion or tube portion of the pump device can be inserted above the bottom portion having the opening / closing valve, and the auxiliary opening / closing valve includes the cylinder portion of the pump device or 4. The open / close valve that does not allow liquid to pass above the bottom portion in any of a state in which the tube portion is not inserted and a state in which the pump device is attached to the mouth portion. The airless container according to item. The said cylindrical part is provided with the hollow cylindrical shape which has the outer diameter similar to the internal diameter of the said neck part of the said container main body over the substantially full length of the axial direction. The airless container as described. A hollow plug adapter for use in the airless container according to any one of claims 1 to 5,
A cylinder part of the pump device having a fitting part having an outer diameter similar to the inner diameter of the mouth part of the container body, the tubular part being longer than the length of the mouth part, and closing the lower end part of the tubular part, or The opening / closing valve is provided with an opening / closing valve into which the tube portion can be inserted, and the opening / closing valve is either in a state where the cylinder portion or the tube portion of the pump device is not inserted or in a state where the pump device is attached to the mouth portion. In this state, the inside plug adapter which is an on-off valve that prevents liquid from passing through at the bottom.   The inside plug adapter according to claim 6, wherein an air discharge groove is formed on the outer peripheral surface of the tubular portion from the lower end portion to at least the vicinity of the upper end portion.   The inner plug adapter according to claim 6 or 7, wherein the tubular portion and the bottom portion having the on-off valve are formed as an integrally molded product.   The container with a pump by which the pump apparatus is mounted | worn with the mouth part of the container main body of the airless container of any one of Claims 1-5 as said mounting member.

Images