JP2008213854A - Double container with pump - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To obtain the sure and stable discharging operation of the content by making a crushed deformation shape of the inner container of a double container with a pump to be a set shape. <P>SOLUTION: The double container with the pump has the inner container 1 which can be freely crush-deformed, the outer container 8 which stores and holds the inner container 1 and is not deformed, and the pump 11 which is combined with both containers and discharges the content in the inner container 1. The crush-deformation is regulated to a definite shape by forming ribs 7 on a barrel part 6 of the inner container 1, and a venting part 10 for introducing open air is provided between the inner container 1 and the outer container 8 to smoothly perform the crush-deformation. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  In the present invention, a collapsible deformable inner container is housed in an undeformed outer container, and the contents in the inner container are crushed by a pump assembled to the combination of the inner container and the outer container. The present invention relates to a double container with a pump that discharges while being deformed.

The inner container, which is a thin container that can be crushed and deformed, is stored and held in an outer container that is not deformed. There is known a double container with a pump that is detachably assembled and is configured to freely introduce outside air between an inner container and an outer container.
Japanese Patent Laid-Open No. 2004-3007048

  This double container with a pump discharges the contents in the inner container by the action of the pump, but the inner container that discharged the contents is crushed and deformed by the volume of the discharged contents, and the volume is reduced. As a result, good storage and retention of anaerobic contents is achieved by preventing outside air from being sucked into the inner container.

  However, in the above-described prior art, the deformation state of the inner container is not constant, and therefore, an inconvenience that a large amount of contents remain undischargeable easily due to the bad deformation of the inner container. There was a problem.

  Further, since the inner container is an adhesive assembly mainly composed of a film, there is a problem that it takes time and labor to manufacture the inner container.

  Furthermore, since the deformation of the inner container is irregular, the appearance of the inner container that has been deformed by deformation tends to be unsightly. For this reason, there has been a complaint that the inner container should not appear as an appearance.

  Therefore, the present invention was devised to solve the above-described problems in the prior art, and it is a technical problem to make the collapsed deformation mode of the inner container of the double container with a pump set. Therefore, an object is to obtain a reliable and stable discharge operation of the contents.

  The double container with a pump according to the present invention is assembled to an inner container which is a biaxial stretch blow molded synthetic resin bottle, a bottomed cylindrical outer container which does not deform, and a combination of an inner container and an outer container. And a pump for discharging the contents stored in the inner container.

  The bottomed cylindrical body portion of the inner container has a thin-walled structure that can be crushed and deformed, and ribs that restrict the deformation of the body portion to a certain form are formed on the body portion.

  The outer container and the inner container are assembled in such a manner that the outer container is housed and held in a suspended manner. The combination of the inner container and the outer container is provided between the inner container and the outer container. A ventilation portion for introducing outside air is provided.

  The pump is tightly assembled to the mouth tube portion of the inner container and is assembled to the opening of the outer container in a state where the contents of the inner container can be discharged.

  The inner container is formed by a normal biaxial stretch blow molding means, and the thickness of the inner container is accurately set by setting the thickness of the preform, which is the primary molded product of the inner container, and the stretch ratio. .

  The rib strip formed in the inner container is formed by rib pieces provided on at least one of the inner surface and the outer surface of the cylindrical body portion of the preform having a bottomed cylindrical shape, and the inner container is formed by biaxial stretch blow molding. Since it is a product, it is formed mainly on the inner peripheral surface of the body portion of the inner container over the entire height range of the body portion, thereby restricting the deformation of the body portion to a constant form.

  The outer container that is not deformed is stored and held in a suspended shape so that the inner container can be freely crushed and deformed, and the inner container is not crushed and deformed illegally by contact with other articles. To protect.

  Since the pump is assembled tightly to the inner container and is assembled to the opening of the outer container, the outer container and the inner container are assembled to each other by the pump.

  Another configuration of the present invention is such that the ribs of the inner container are configured by a plurality of vertical ribs provided at equal intervals along the circumferential direction.

  In the case where the rib strip is constituted by a plurality of vertical ribs, the body portion of the inner container has a constant form in which the thin portion between the rib strips is deformed without being reduced in height. It will be crushed and deformed.

  Another configuration of the present invention is that the ribs of the inner container are configured by spiral ribs.

  If the rib strip is composed of spiral ribs, the body portion of the inner container is deformed in a constant form, with the thin portion between the upper and lower rib strips being deformed while reducing the height. To do.

  Another configuration of the present invention is a configuration in which the ribs of the inner container are configured by spiral ribs having the same structure and positioned axisymmetrically.

  In the case where the rib strip is constituted by a spiral rib, the thin portion between the upper and lower spiral ribs is positioned axisymmetrically, so that the deformation of the inner container body while reducing the height is inclined. Without being crushed and deformed in a constant form.

  Moreover, another structure of this invention forms the ventilation | gas_flowing part with the groove | channel provided from the upper end surface of the opening part of the outer container to the outer peripheral surface.

  In the case where the ventilation part is formed by a groove provided from the upper end surface of the opening of the outer container to the outer peripheral surface, the upper end surface of the opening of the outer container forms the mounting surface of the inner container. The groove forms a ventilation part between the inner container and the outer container in a state where the assembled part of the inner container that is suspended from the container is placed on the upper end surface of the opening of the outer container. Become.

  Further, another configuration of the present invention is configured such that the inner container is provided with an outer collar-shaped mouthpiece portion that places the peripheral end portion on the opening portion of the outer container at the lower end of the mouth tube portion. .

  In the case where the inner container is constructed by providing a mouthpiece at the lower end of the mouthpiece, this mouthpiece constitutes the assembly part of the inner container with respect to the outer container. The diameter of the assembled portion of the inner container can be set according to the diameter of the body section.

  According to another configuration of the present invention, the pump is provided with an assembled cap that is tightly fitted into the main portion of the pump and assembled, and the assembled cap is assembled closely to the mouth tube portion of the inner container. At the same time, it is configured to be detachably assembled to the opening of the outer container.

  If the pump is configured with a cap with assembly, the assembly cap achieves close assembly with the inner container and detachable assembly with respect to the outer container. The assembly of the main part of the pump to the combination is achieved by closely fitting the main part of the pump into the assembly cap and assembling.

  Another configuration of the present invention is one in which the outer container is transparent.

  When the outer container is transparent, the inner container can be observed from the outside, and the transparency of the outer container can be used to give a three-dimensional decoration to the double container. .

Since the present invention has the above-described configuration, the following effects can be obtained.
In the present invention, since the inner container is a biaxially stretched blow-molded product, the thickness of the body portion can be freely and easily set, thereby easily obtaining an inner container that is easily crushed and deformed. Therefore, a smooth discharge operation of the contents accompanying the volume reduction deformation of the inner container can be obtained.

  Since the crushing deformation of the body portion of the inner container is restricted to a constant form, it becomes easy to adapt the deformation form and discharge the contents without waste.

  Since the inner container is housed and held in a suspended shape in the outer container that does not deform, it is possible to obtain a smooth crushing deformation operation of the inner container and sufficiently protect the mechanically weak inner container, As a result, usability and safety can be obtained.

  Since the outer container and the inner container are assembled with each other by the pump, the structure with the outer container and the inner container can be simplified.

  In the case where the ribs of the inner container are constituted by a plurality of vertical ribs, the body part of the inner container does not decrease in height, and the thin portion between the ribs is deformed and deformed. Since it is crushed and deformed in the above-described form, it is easy to form a discharge passage for the contents at the center, whereby the contents can be discharged without waste.

  In the case where the ribs of the inner container are constituted by spiral ribs, the body part of the inner container has a constant form in which the thin part between the upper and lower ribs is deformed while the height is reduced. Therefore, according to the deformation of the body, that is, according to the consumption of the contents, the contents in the body will rise and approach the pump, thereby obtaining a reliable and smooth discharge operation until the end. Can do.

  In the case where the ribs of the inner container are made of spiral ribs, the thin part between the upper and lower spiral ribs is positioned axisymmetrically, so the torsional deformation of the inner container while reducing the height Is in a constant form without inclining, whereby a reliable and smooth discharge operation to the end can be stably obtained.

  In the case where the ventilation part is formed by a groove provided from the upper end surface of the opening of the outer container to the outer peripheral surface, the ventilation part is formed in a state where the inner container is housed and held in a suspended state in the outer container. As a result, the ventilation portion is reliably formed.

  In the case where the inner container is configured by providing a mouthpiece at the lower end of the mouth tube portion, the diameter of the assembled portion of the inner container can be set according to the diameter of the body portion that can be crushed and deformed. Thus, even if the outer container is configured in a simple bottomed cylindrical shape, the inner container which is a biaxial stretch blow-molded product can be assembled to the outer container without any trouble.

  If the pump is provided with a cap with a set, the assembly of the main part of the pump to the combination of the inner container and the outer container is performed by closely fitting the pump with the cap of the main part of the pump. Since this is achieved by attaching, the handling of the main part of the pump during the assembling operation is simplified.

  In the case where the outer container is transparent, it is possible to use a certain form of deformation of the inner container that can be observed from the outside as a decorative decoration, and depending on the degree of deformation of the inner container The consumption of the contents can be accurately determined, and further, the transparency of the outer container can be used to give the double container a three-dimensional decoration, thereby obtaining an excellent decoration effect It becomes possible.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

  FIG. 1 is an overall side view of an embodiment of the present invention that is irregularly half-cut longitudinally. An inner container 1 that is a biaxially stretched blow-molded product made of synthetic resin has an undercut coupling portion on an outer peripheral surface, A mouthpiece portion 4 having a diameter slightly larger than the outer diameter of the barrel portion 6 having a bottomed cylindrical shape is integrally provided at the lower end of the outer peripheral surface of the mouthpiece portion 2 protruding from the stopper piece 3. A body 6 formed into a thin wall is connected to the lower end of 2 through a neck 5 having a small diameter so that it can be crushed and deformed freely.

  The outer container 8 is an injection-molded product or a blow-molded product made of a transparent hard synthetic resin, has a bottomed cylindrical shape having an inner diameter slightly larger than the outer diameter of the body portion 6 of the inner container 1, and is screwed on the outer peripheral surface. The vent 9 (see FIG. 2) is formed in the opening 9 in which the strip is engraved by a groove cut from the upper end surface to the outer peripheral surface.

  In the configuration in which the inner container 1 is assembled to the outer container 8 with the mouthpiece portion 4, the vent portion 10 can be formed using the mouthpiece portion 4 of the inner container 1. That is, a groove may be cut radially on the lower surface portion of the mouthpiece portion 4 placed on the upper end surface of the opening 9 of the outer container 8, and this may be used as the ventilation portion 10.

  The pump 11 includes a pump main body 12 having a nozzle head 13 assembled at the upper end thereof, a main body portion of the pump in which an assembled shoulder portion 14 that forms an assembled portion of the pump main body 12 is assembled, an inner container 1 and an outer container. 8 and an assembled cap 15 that forms an assembled functional part for the assembly 8.

  The assembled cap 15 is tightly coupled to the mouth tube portion 2 of the inner container 1 and cannot be rotated by being locked with the locking piece 3, and is undercut coupled by fitting, and is attached to the opening 9 of the outer container 8. In a state where the peripheral end portion of the mouthpiece portion 4 is placed on the end face, the opening portion 9 is detachably screwed. In addition, it replaces with the vertical groove of the outer peripheral surface of the opening part 9, and can provide the vertical groove in the screwing part of the assembly | attachment cap 15, and can also comprise the ventilation part 10. FIG.

  Therefore, the inner container 1 is assembled and fixed to the outer container 8 by the assembled cap 15 while being held and held in a suspended state.

  The assembled shoulder portion 14 that is closely assembled to the pump body 12 is assembled to the assembled cap 15 by a simple fitting operation so that the shoulder 14 is tightly and rotationally displaceable. By assembling the assembled cap 15, the pump body 12 is closely assembled to the inner container 1.

  FIG. 3 is a semi-longitudinal sectional view showing the structure of the first embodiment of the inner container 1, and three longitudinal ribs are formed on the inner peripheral surface from the neck 5 to the entire height range of the body 6. The rib strips 7 are arranged at equal intervals (see FIG. 4).

  In the first embodiment, the thin portion between the ribs 7 is in the state indicated by the two-dot chain line in FIG. 4 and the body portion 6 is crushed and deformed without reducing the height. However, when the body portion 6 is crushed and deformed, as is apparent from FIG. 4, a passage extending in the vertical direction is formed in the body portion 6 adjacent to at least the rib strips 7. The content can be discharged with almost no residue.

  As shown in FIG. 5, the preform P molded in the first embodiment of the inner container 1 covers the entire height range of the inner peripheral surface excluding the bottom part of the bottomed cylindrical part P1. As shown in FIG. 6, three longitudinal rib ribs P <b> 2 are provided at equal intervals along the circumferential direction.

  The rib piece P2 in the preform P shown in FIG. 5 is not specified in the shape of the vertical rib ridge shown in FIG. 6, for example, as shown in FIG. 7, the inner peripheral surface of the barrel portion P1, etc. You may comprise the part located in the space | interval by making it thick along a "string".

  FIG. 8 is a semi-longitudinal sectional view showing the structure of the second embodiment of the inner container 1, and is provided with a single spiral rib on the inner peripheral surface over the entire height range of the trunk portion 6, A rib strip 7 is constituted by the spiral rib.

  As shown in FIG. 9, the preform P molded in the second embodiment of the inner container 1 covers the entire height range of the inner peripheral surface excluding the bottom of the bottomed cylindrical part P <b> 1. Thus, a spiral rib strip-shaped rib piece P2 having a constant pitch is engraved.

  FIG. 10 is a semi-longitudinal sectional view showing the structure of the third embodiment of the inner container 1 in a state of being crushed and deformed halfway in the longitudinal direction, and on the inner peripheral surface over the entire height range of the trunk portion 6. A pair of spiral ribs having a constant pitch is provided on the axis, and the rib strip 7 is constituted by the pair of spiral ribs.

  In the third embodiment of the inner container 1, the ribs 7 and the thin-walled portions that are crushed and deformed between the ribs 7 are positioned axisymmetrically, so that the generated crushing deformation also occurs axisymmetrically. Therefore, the crushing deformation that results in a state of contraction in the vertical direction is appropriately performed without tilting.

  The preform P molded in the third embodiment of the inner container 1 is, as shown in FIG. 11, over the entire height range of the outer peripheral surface excluding the bottom of the bottomed cylindrical part P1. A pair of spiral rib strips P2 having a constant pitch are engraved.

It is the whole side view which carried out the half vertical cross-section which shows one embodiment of this invention. It is a principal part enlarged view of FIG. It is a semi-longitudinal sectional view showing the first embodiment example of the inner container. FIG. 4 is a cross-sectional plan view taken along the line AA in FIG. FIG. 4 is a half vertical sectional view of the inner container forming preform shown in FIG. 3. It is a top view of one Example of the preform shown in FIG. It is a top view of the other Example of the preform shown in FIG. It is a semi-longitudinal sectional view showing a second embodiment of the inner container. FIG. 9 is a half longitudinal sectional view of the inner container forming preform shown in FIG. 8. It is a semi-longitudinal sectional view showing a third embodiment of the inner container. FIG. 11 is a half longitudinal sectional view of the inner container forming preform shown in FIG. 10.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1; Inner container 2; Mouth part 3; Locking piece 4; Mouth part 5; Neck part 6; Trunk part 7; Rib strip 8; Outer container 9; Opening part 10; Ventilation part 11; Nozzle head 14; shoulder 15 with assembly; cap P with assembly; preform P1; barrel portion P2;

Claims (8)

An inner container, which is a biaxially stretched blow molded synthetic resin bottle, with a bottomed cylindrical body having a thin structure that can be crushed and deformed. A bottom cylindrical outer container and a pump that is closely assembled to the mouth tube portion of the inner container and that is assembled to the opening of the outer container to discharge the contents in the inner container by a pump operation. And a rib formed on the body of the inner container for restricting the deformation of the body to a certain shape, and a ventilation part for introducing outside air is provided between the inner container and the outer container. Double container with. The double container with a pump according to claim 1, wherein the ribs of the inner container are constituted by a plurality of vertical ribs provided at equal intervals along the circumferential direction. The double container with a pump according to claim 1, wherein the ribs of the inner container are constituted by spiral ribs. The double container with a pump according to claim 1, wherein the ribs of the inner container are constituted by spiral ribs having the same structure and positioned axisymmetrically. The double container with a pump in any one of Claim 1 thru | or 4 which formed the ventilation | gas_flowing part in the groove | channel provided from the upper end surface of the opening part of the outer container to the outer peripheral surface. 6. The pump-equipped two-way pump according to any one of claims 1 to 5, wherein the inner container is provided with an outer collar-shaped mouthpiece portion that places the peripheral end portion on the opening portion of the outer container at the lower end of the mouth tube portion. Heavy container. The pump is configured by providing an assembled cap that fits tightly into the main part of the pump and is assembled. The assembled cap is assembled tightly to the mouth tube portion of the inner container and detachable from the opening of the outer container. The double container with a pump according to any one of claims 1 to 6, wherein the double container is configured to be assembled with the pump. The double container with a pump according to any one of claims 1 to 7, wherein the outer container is transparent.

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