JP2016222301A - Double container - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a double container which can prevent shower water from intruding from an outside air introduction hole in cooling after thermal filling of a content.SOLUTION: An outside air introduction hole 14 can communicate with an external by peeling at least a part of a seal material 40 adhered to an outer side surface of an outer layer body 10.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a double container including an outer layer body that forms an outer shell of a container, an inner layer body that is housed inside the outer layer body, and an outside air introduction hole that penetrates the outer layer body. It is intended to prevent shower water from entering from the outside air introduction hole during cooling after filling.

  Conventionally, an outer layer body forming a bottle shape having a mouth portion, a body portion and a bottom portion and forming an outer shell of a container, an inner layer body housed inside the outer layer body, and an outside air introduction hole penetrating the outer layer body A double container (also referred to as a delamination container) capable of introducing outside air into the internal space formed between the outer layer body and the inner layer body from the outside air introduction hole in accordance with volume reduction deformation of the inner layer body is known (for example, Patent Document 1).

  In addition, for example, when liquid foods such as soy sauce, soy sauce-containing seasonings, vinegar, and cooking liquor are used as contents, the contents are filled into containers and filled with high-temperature contents. There is known a heat filling step for performing a cooling process for cooling a container and contents using shower water after the step.

JP 2008-207860 A

  However, when the heat filling process and the cooling process are applied to the conventional double container as described above, the shower water flows from the outside air introduction hole to the internal space of the container (the outer layer body and the inner layer body between the outer layer body and the inner layer body during the cooling after the heat filling. There was a problem of intrusion. In addition, when shower water enters from the outside air introduction hole as described above, the barrier property of the inner layer body may be lowered depending on the material of the inner layer body.

  The present invention was developed in order to solve the above-described problems, and an object thereof is to provide a double container that can prevent shower water from entering from an outside air introduction hole during cooling after heat filling of contents. To do.

That is, the gist configuration of the present invention is as follows.
1. An outer layer body that forms a bottle shape having a mouth portion, a body portion, and a bottom portion and forms an outer shell of a container, an inner layer body that is housed inside the outer layer body, and an outside air introduction hole that penetrates the outer layer body In the double container capable of introducing the outside air into the internal space formed between the outer layer body and the inner layer body from the outside air introduction hole in accordance with the volume reduction deformation of the inner layer body,
The double container, wherein the outside air introduction hole can communicate with the outside world by peeling off at least a part of a sealing material adhered to the outer surface of the outer layer body.

2. The body part of the outer layer body includes a recess that is locally recessed inward,
The outside air introduction hole is formed in the recess,
The outside air introduction hole is provided with a check valve that allows outside air to be introduced into the internal space while preventing air leakage from the internal space.
The double container according to 1 above, wherein the sealing material is attached so as to cover the concave portion.

3. The double container according to 2 above, wherein the check valve includes a protruding portion that protrudes from the outside air introduction hole into the internal space.

4). The check valve includes a penetrating portion that penetrates the outside air introduction hole while leaving a gap with an outer peripheral surface of the outside air introduction hole,
One end of the penetrating part is connected to the protruding part,
The protruding portion includes a seating portion that is seated on an inner edge portion of the outer peripheral surface of the outside air introduction hole to prevent air leakage from the internal space,
The double container according to 3 above, wherein a plurality of elastic arm portions that are in contact with the outer surface of the outer layer body in the concave portion are provided in the other end portion of the penetrating portion.

5. The sealing material surrounds the outside air introduction hole and is attached to the outer surface of the outer layer body so as to be peelable, and one end is connected to the sticking portion and the other end is the outer surface of the outer layer body The double container according to any one of the above 1 to 4, which is a film material provided with a gripping protrusion separated from the container.

6). A pouring cap having a pouring plug attached to the mouth of the outer layer body and a lid for opening and closing the pouring plug;
A shrink label attached to at least an upper portion of the body portion of the outer cap body and the pouring cap;
At least a portion of the shrink label can be removed from the top of the dispensing cap and the trunk of the outer layer body,
The double container according to any one of 2 to 4, wherein the at least part of the sealing material is bonded to the at least part of the shrink label.

7). The sealing material is detachably attached to the outer surface of the outer layer body, and is connected to the to-be-removed portion adhered to the at least part of the shrink label, and is connected to the to-be-removed portion via the to-be-cut portion. The double container according to 6, wherein the double container is a film material including a covering portion that is attached to an outer surface of the outer layer body and covers the check valve.

  According to the present invention, in the cooling step after heat filling, shower water enters from the outside air introduction hole by blocking the outside air introduction hole from the outside by the sealing material adhered to the outer surface of the outer layer body. Can be prevented. Further, after that, at least a part of the sealing material is peeled off so that the outside air introduction hole communicates with the outside world, so that outside air can be introduced when the container is used.

  Therefore, according to this invention, the double container which can prevent that shower water penetrate | invades from an external air introduction hole at the time of the cooling after the hot filling of the contents can be provided.

It is a longitudinal cross-sectional view of the double container which concerns on one Embodiment of this invention. It is a side view of the double container of FIG. It is the elements on larger scale of FIG. It is a bottom view of the double container which concerns on other embodiment of this invention. It is AA sectional drawing of FIG. It is BB sectional drawing of FIG. It is a longitudinal cross-sectional view of the double container which concerns on further another embodiment of this invention. It is a side view of the double container of FIG. It is a longitudinal cross-sectional view which shows the state before and behind opening of the double container of FIG. 7, (a) shows before opening and (b) shows the state after opening.

Hereinafter, the present invention will be described in more detail with reference to the drawings.
In this specification, the vertical direction is based on the upright state of the double container, and the side on which the mouth of the outer layer body is located is upward (for example, the upper side in FIG. 1), and the bottom of the outer layer body is located. The side is defined as the lower side (for example, the lower side in FIG. 1).

First, with reference to FIGS. 1-3, the double container 1 which concerns on one Embodiment of this invention is illustrated and demonstrated in detail.
As shown in FIGS. 1 to 2, the double container 1 according to the present embodiment includes an outer layer body 10 that forms an outer shell of the container, and an inner layer body 20 that is housed inside the outer layer body 10 and is capable of volume reduction and deformation. It has. In this embodiment, an adhesive band (not shown) is provided between the outer layer body 10 and the inner layer body 20 to partially join the outer layer body 10 and the inner layer body 20 to each other. It is also possible to adopt a configuration in which no provision is made.

  Here, the double container 1 in this embodiment includes a synthetic resin outer layer body 10, an inner layer body 20 formed of a synthetic resin having low compatibility with the outer layer body 10, and the outer layer body 10 and the inner layer body. 20. A band-shaped adhesive layer formed of a synthetic resin having adhesiveness to 20, that is, an adhesive band is laminated, and a parison formed by laminating these synthetic resins is blow molded. It was obtained by. Here, in the double container 1 of the present embodiment, the outer layer body 10 has a two-layer structure of an outer low density polyethylene (LDPE) and an inner polypropylene resin (PP), and the inner layer body 20 is made of an outer ethylene vinyl alcohol. It has a two-layer structure of a polymer resin (EVOH) and an inner modified polyolefin resin (“Admer” (registered trademark) manufactured by Mitsui Chemicals, Inc.). The adhesive band is made of a modified polyolefin resin (“Admer” (registered trademark)). In this embodiment, in order to impart squeeze properties, the outer layer of the outer layer body 10 is composed of low density polyethylene (LDPE), but polypropylene resin (PP), medium density polyethylene resin (MDPE), or High density polyethylene resin (HDPE) can also be used. Moreover, the layer of the polypropylene resin (PP) constituting the outer layer body 10 of the present embodiment is provided to improve the peelability of the inner layer body 20, and is not necessarily required. Furthermore, the above-described layer configuration is an example, and the material of the outer layer body 10, the inner layer body 20, and the adhesive band is not particularly limited as long as the inner layer body 20 can be peeled from the outer layer body 10, respectively. A single layer structure or a multilayer structure may be used. Moreover, it is not always necessary to provide an adhesive band.

  The outer layer body 10 has a bottle shape having a mouth portion 11, a body portion 12, and a bottom portion 13, and has a flexibility that can be restored. In addition, in this embodiment, the trunk | drum 12 is carrying out the cylindrical shape which a cross section is circular and an upper part reduces diameter toward the opening part 11, However, It is not limited to this, For example, a cross section is a polygon or an ellipse. It can be a shape such as a shape.

  The inner layer body 20 has a filling space M in which contents (not shown) can be filled, and can be reduced in volume by being peeled from the laminated outer layer body 10. That is, the outer layer body 10 includes an outside air introduction hole 14 penetrating the outer layer body 10, and the outer layer body 10 and the inner layer body 20 are connected to the outer layer body 10 and the inner layer body 20 from the outside air introduction hole 14 in accordance with a volume reduction deformation of the inner layer body 20 as the contents are taken out. Outside air is introduced into an internal space N formed therebetween.

  As shown in FIG. 3, in the present embodiment, the body 12 of the outer layer body 10 includes a recess 15 that is recessed inward locally, and the outside air introduction hole 14 is formed in the recess 15. The outside air introduction hole 14 is provided with a check valve 30 that allows outside air to be introduced into the internal space N while preventing air leakage from the internal space N.

  In the present embodiment, the check valve 30 is connected to a through portion 31 that penetrates the outside air introduction hole 14 with a gap between the check valve 30 and the outer peripheral surface of the outside air introduction hole 14, and one end of the penetration portion 31 and introduces outside air. A projecting portion 32 projecting from the hole 14 into the internal space N and a plurality (four in this example) of elastic arm portions 33 connected to the other end of the through portion 31 are provided. The protruding portion 32 includes a seating portion 32 a that is seated on the inner edge portion 14 a on the outer peripheral surface of the outside air introduction hole 14 and prevents leakage of air from the internal space N. In addition, the protrusion part 32 has comprised the hollow cylinder shape which has the hollow part opened toward the front-end | tip. Further, the plurality of elastic arm portions 33 are configured to abut against the outer surface of the outer layer body 10 in the recess 15 and prevent the check valve 30 from dropping into the internal space N.

  The seating portion 32a is not necessarily required to seal the outside air introduction hole 14 when the double container 1 is not used, but is configured to seal the outside air introduction hole 14 even when the double container 1 is not used. In such a case, it is preferable because dust and the like can be prevented more reliably from entering the internal space N when not in use. Further, when configured in this manner, since the outside air introduction hole 14 is sealed at the start of squeeze, it is possible to more reliably prevent air leakage from the internal space N at the start of squeeze. . It is more preferable that the plurality of elastic arm portions 33 be configured so as to apply a biasing force for seating the seating portion 32a by being pressed against the outer surface of the outer layer body 10 in the recess 15. Thus, it is possible to more reliably prevent the intrusion of dust and the like when not in use and the leakage of air at the start of squeeze as described above. The check valve 30 can be made of, for example, a synthetic resin.

  Further, the outside air introduction hole 14 is blocked from the outside by a sealing material 40 attached to the outer surface of the outer layer body 10. In this embodiment, the sealing material 40 surrounds the outside air introduction hole 14 and is attached to the outer surface of the outer layer body 10 so as to be peelable, and one end is connected to the sticking portion 41 and the other end. Is a film material provided with a gripping protrusion 42 spaced from the outer surface of the outer layer body 10. The sealing material 40 is attached so as to cover the recess 15.

  Moreover, as shown in FIGS. 1 to 2, the double container 1 includes a pouring cap 50. The spout cap 50 includes a spout 51 that is engaged and held in the mouth portion 11, and a lid 53 that is connected to the spout 51 via a hinge 52 and opens and closes the spout 51. Yes. In addition, it is good also as a structure which forms the cover body 53 as a different body without providing the hinge 52, and engages the spout 51 with a screw engagement or an undercut engagement.

  The spout 51 is provided with a mounting cylinder 54 that is undercut-engaged with the outer peripheral surface of the mouth portion 11, a partition wall 55 that covers the top of the mounting cylinder 54, and an upright side from the partition wall 55. And a pouring tube 56 connected to. A cylindrical wall 57 is continuous below the dispensing cylinder 56, and a plurality of vertical ribs 58 provided at intervals in the circumferential direction are provided on the inner peripheral surface of the cylindrical wall 57. A spherical body 59 is disposed inside the vertical rib 58 in the radial direction, and is retained by a bulging portion provided at the upper end of the vertical rib 58. In the lower part of the cylindrical wall 57, there is provided an inclined wall 57a whose diameter is reduced downward. Here, the spherical body 59 moves by its own weight along the vertical rib 58, and as shown in FIG. 1, when the double container 1 is in the upright posture, it contacts the inclined wall 57a over the entire circumference. Thus, the filling space M of the inner layer body 20 is sealed.

  The lid 53 is obtained by connecting a peripheral wall 61 to the outer edge of the top wall 60 covering the top of the pouring plug 51, and the peripheral wall 61 is connected to the mounting cylinder 54 by a hinge 52. In addition, a seal cylinder 62 that is in liquid-tight contact with the dispensing cylinder 56 is provided on the lower surface of the top wall 60. In addition, a pin 63 extending downward is provided on the radially inner side of the seal cylinder 62. The pin 63 is provided so as to come into contact with the spherical body 59 before reaching the upper limit when the spherical body 59 is displaced upward. Thereby, the spherical body 59 can be reliably dropped by closing the lid body 53 after the use of the double container 1 and brought into contact with the inclined wall 57a, and the filling space M can be sealed.

  When applying a heat filling process and a cooling process to such a double container 1, first, contents such as liquid food are filled in the filling space M of the inner layer body 20 in a high temperature state, and the pouring cap 50 is plugged. Is done. In the subsequent cooling step, the double container 1 and its contents are cooled using shower water. The check valve 30 and the sealing material 40 described above are at least the outer layer before this shower water is applied. Attached to the body 10. Thus, by shutting off the outside air introduction hole 14 from the outside by the sealing material 40 until shower water is applied, due to the volumetric deformation of the inner layer body 20 due to the decompression in the filling space M during cooling, The shower water is prevented from entering the internal space N from the outside air introduction hole 14.

  At this time, since outside air cannot be introduced into the internal space N from the outside air introduction hole 14, the outer layer body 10 also undergoes volumetric deformation along with the volume reduction deformation of the inner layer body 20. It is preferable that the shape and material of the outer layer body 10 are appropriately set so that distortion is not caused and the appearance is not impaired. The sealing material 40 may be peeled off and removed from the outer layer body 10 at the start of use of the double container 1, but instead, the sealing material 40 is peeled off immediately after the cooling step to close the outside air introduction hole 14. The outer layer body 10 may be restored by communicating with the outside world.

  When the double container 1 is used, first, the lid body 53 is opened to place the double container 1 in a tilted or inverted posture, whereby the spherical body 59 is displaced toward the dispensing cylinder 56 side. If the outer layer body 10 is pressed (squeezed) so as to sandwich the body portion 12 from both sides, the check valve 30 is provided in the outside air introduction hole 14, thereby preventing air leakage from the internal space N. Therefore, the contents can be discharged smoothly. Further, if the squeeze is released, the outside air is sufficiently introduced into the internal space N.

  As described above, the double container 1 according to the present embodiment is formed in a bottle shape having the mouth portion 11, the trunk portion 12, and the bottom portion 13 and forms the outer shell of the container, and the outer layer body 10. And an outside air introduction hole 14 penetrating the outer layer body 10, and between the outer layer body 10 and the inner layer body 20 from the outside air introduction hole 14 due to volumetric deformation of the inner layer body 20. In the double container 1 capable of introducing outside air into the formed internal space N, the outside air introduction hole 14 communicates with the outside world by peeling off at least part of the sealing material 40 attached to the outer surface of the outer layer body 10. It is configured to be possible.

  Therefore, according to the double container 1, in the cooling step after the heat filling, the outdoor air introduction hole 14 is blocked from the outside by the sealing material 40 attached to the outer surface of the outer layer body 10, so that the shower water Can be prevented from entering from the outside air introduction hole 14. Moreover, after that, at least a part of the sealing material 40 is peeled off to allow the outside air introduction hole 14 to communicate with the outside world, so that outside air can be introduced when the container is used.

  Further, in the double container 1 according to the present embodiment, the body portion 12 of the outer layer body 10 includes a recessed portion 15 that is locally recessed toward the inside, and the outside air introduction hole 14 is formed in the recessed portion 15. The hole 14 is provided with a check valve 30 that allows outside air to be introduced into the internal space N while preventing leakage of air from the internal space N. The sealing material 40 covers the recess 15 and is attached. It is configured to be worn.

  Therefore, according to the double container 1, the check valve 30 can smoothly discharge the contents by squeeze, and the check valve 30 can be prevented from protruding from the body portion 12 and deteriorating the appearance of the container. .

  Further, the double container 1 according to the present embodiment is configured such that the check valve 30 includes a protruding portion 32 that protrudes from the outside air introduction hole 14 into the internal space N.

  Therefore, according to the double container 1, since the inner layer body 20 is pushed by the protrusion 32 and a gap is formed between the outer layer body 10, a gap serving as an outside air introduction path is formed in the vicinity of the outside air introduction hole 14. It can be surely secured.

  In addition, the double container 1 according to the present embodiment includes the check valve 30 including a through portion 31 that penetrates the outside air introduction hole 14 while leaving a gap between the check valve 30 and the outer peripheral surface of the outside air introduction hole 14. One end of the projection is connected to the projection 32, and the projection 32 includes a seat 32 a that sits on the inner edge 14 a on the outer peripheral surface of the outside air introduction hole 14 and prevents air leakage from the internal space N. The other end side portion of the penetrating portion 31 is configured to be provided with a plurality of elastic arm portions 33 that contact the outer surface of the outer layer body 10 in the recess 15.

  Therefore, according to the double container 1, when the trunk portion 12 is squeezed, the seat portion 32a of the check valve 30 is seated on the inner edge portion 14a on the outer peripheral surface of the outside air introduction hole 14, thereby preventing air leakage. Can do. Further, when releasing the squeeze, due to the decompression of the internal space N accompanying the restoration of the body portion 12, the plurality of elastic arm portions 33 are elastically deformed so that the seating portion 32 a is sufficiently separated from the inner edge portion 14 a on the outer peripheral surface of the outside air introduction hole 14. The outside air can be introduced into the internal space N through the plurality of elastic arm portions 33 and between the through portion 31 and the outer peripheral surface of the outside air introduction hole 14.

  Further, in the double container 1 according to this embodiment, the sealing material 40 surrounds the outside air introduction hole 14 and is attached to the outer surface of the outer layer body 10 so as to be peelable, and the attaching portion 41. One end is connected to the other end, and the other end is a film material provided with a gripping protruding piece 42 separated from the outer surface of the outer layer body 10.

  Therefore, according to the double container 1, it is easy to peel off the sealing material 40 with the projecting piece 42 as a gripping part at the start of use of the double container 1 or after the cooling process with shower water after heat filling is completed. The outside air introduction hole 14 can be opened.

Next, with reference to FIGS. 4-6, the double container 2 which concerns on other embodiment of this invention is illustrated and demonstrated in detail.
As shown in FIGS. 4 to 6, the double container 2 according to the present embodiment is not provided with the point that the outside air introduction hole 14 ′ is provided in the bottom portion 13 instead of the body portion 12, and the check valve 30. Except for this point, the configuration is the same as that of the embodiment described above with reference to FIGS.

  That is, in the present embodiment, the outer layer body 20 and the inner layer body 20 are sandwiched between the outer layer body 10 and the inner layer body 20 by a blow mold, and the inner layer body 20 is removed from the outer layer body in the pinch-off portion 16 formed by biting the tip. An opening formed by peeling off the outer layer body 10 from the bottom 10 is used as the outside air introduction hole 14 ′. Specifically, for example, the external air introduction hole 14 ′ is formed by pressing the pinch-off portion 16 toward the mouth portion 11 after blow molding. In the figure, 14b 'represents one end of the outside air introduction hole 14', and 14c 'represents the other end of the outside air introduction hole 14'.

  The pinch-off portion 16 (outside air introduction hole 14 ′) is formed in a recessed portion 13 b that is recessed toward the mouth portion 11 inside the annular outer edge portion 13 a that becomes the ground contact surface of the bottom portion 13. In the present embodiment, the sealing material 40 includes a sticking portion 41 attached to the annular outer edge portion 13a over the entire circumference, one end connected to the sticking portion 41, and the other end of the outer layer body 10. It is comprised as a film material provided with the protrusion 42 for a grip spaced apart from the outer surface.

  When the cooling process is performed on the double container 2 after heat filling, the double container 2 and the contents thereof are cooled using shower water. At least before the shower water is applied, the sealing material 40 is used. It is attached to the outer layer body 10. Thus, by shutting off the outside air introduction hole 14 ′ from the outside by the sealing material 40 before the shower water is applied, the inner layer body 20 is reduced in volume due to the reduced pressure in the filling space M during cooling. The shower water is prevented from entering the internal space N from the outside air introduction hole 14 ′.

  At this time, since the outside air cannot be introduced into the internal space N from the outside air introduction hole 14 ′, the outer layer body 10 also undergoes volumetric deformation along with the volume reduction deformation of the inner layer body 20. It is preferable to appropriately set the shape and material of the outer layer body 10 so that distortion deformation does not occur in 10 and the appearance is not impaired. The sealing material 40 may be peeled off and removed from the outer layer body 10 at the start of use of the double container 2, but instead, the sealing material 40 is peeled off immediately after the cooling step and the outside air introduction hole 14 ′. The outer layer body 10 may be restored by communicating with the outside world.

  When the double container 2 is used, the lid body 53 (see FIG. 1 described above) is opened to place the double container 2 in an inclined or inverted posture, whereby the spherical body 59 is displaced toward the dispensing cylinder 56, The contents can be poured out from the dispensing cylinder 56 by its own weight. At that time, it is also possible to squeeze the body portion 12 to prompt the content to be poured out. In this case, air leaks from the internal space N through the outside air introduction hole 14 ′, but the size of the outside air introduction hole 14 ′ is optimized by appropriately setting the shape of the pinch-off portion 16, etc. Smooth discharge can be achieved.

Next, with reference to FIGS. 7-9, the double container 3 which concerns on further another embodiment of this invention is illustrated and demonstrated in detail.
The double container 3 according to this embodiment is a figure except that the position of the outside air introduction hole 14, the configuration of the sealing material 40 ′, and the opening of the outside air introduction hole 14 are integrated with the opening of the shrink label 70. The configuration is the same as that of the embodiment described above with reference to FIGS.

  That is, in this embodiment, as shown in FIGS. 7 to 8, the outside air introduction hole 14 is provided in a concave portion 15 that is formed in the upper portion of the trunk portion 12 and is locally recessed toward the inside. A check valve 30 is provided in the outside air introduction hole 14. Further, in the present embodiment, the sealing material 40 ′ is connected to the removal planned portion 43 that is detachably attached to the outer surface of the outer layer body 10, and is connected to the removal planned portion 43 via the planned cutting portion 44. And a covering portion 45 that is adhered to the outer surface of the outer layer body 10 and covers the check valve 30.

  Further, the double container 3 includes a shrink label 70 that is attached to at least the top of the dispensing cap 50 and the body portion 12 of the outer layer body 10. In the present embodiment, the shrink label 70 is attached to a region extending from the outer peripheral edge of the top surface of the dispensing cap 50 to the outer peripheral edge of the bottom portion 13. Further, the portion 70a corresponding to the upper part of the barrel 12 of the outer cap body 10 and the pouring cap 50 in the shrink label 70 can be separated and removed from the remaining portion 70b. A portion to be removed 43 of the sealing material 40 ′ is bonded to the portion 70 a corresponding to the upper portion of the body portion 12 of the pouring cap 50 and the outer layer body 10. In this embodiment, the to-be-removed portion 43 is bonded to the shrink label 70 on the entire outer surface.

  When the cooling process is performed on the double container 3 after heat filling, the double container 3 and its contents are cooled using shower water. At least before the shower water is applied, the sealing material 40 ′ is used. It is attached to the outer layer body 10. In this way, by blocking the outside air introduction hole 14 from the outside by the sealing material 40 ′ before the shower water is applied, the inner layer body 20 is reduced in volume due to the reduced pressure in the filling space M during cooling. The shower water is prevented from entering the internal space N from the outside air introduction hole 14.

  At this time, since outside air cannot be introduced into the internal space N from the outside air introduction hole 14, the outer layer body 10 also undergoes volumetric deformation along with the volume reduction deformation of the inner layer body 20. It is preferable that the shape and material of the outer layer body 10 are appropriately set so that distortion is not caused and the appearance is not impaired. After such a cooling step, the shrink label 70 can be attached and the portion 43 to be removed of the sealing material 40 ′ can be adhered to the shrink label 70.

  When using the double container 3, as shown in FIG. 9, the portion 70 a corresponding to the upper portion of the body 12 of the outer cap body 10 and the pouring cap 50 in the shrink label 70 is peeled off. The part to be removed 43 of the sealing material 40 ′ adhered to 70a can also be peeled off together with the part 70a (see FIG. 9B). As a result, the outside air introduction hole 14 communicates with the outside world, and the check valve 30 can be kept hidden by the covering portion 45 of the sealing material 40 ′. The subsequent discharge procedure of the contents is the same as that in the embodiment described with reference to FIGS.

  As described above, the double container 3 according to the present embodiment includes the spout 51 that is attached to the mouth portion 11 of the outer layer body 10 and the cap 53 that opens and closes the spout 51. 50 and at least a portion of the discharge cap 50 and the body 12 of the outer layer body 10, and at least a part of the shrink label 70 is provided on the body 12 of the outer cap body 10 and the outer layer body 10. The seal member 40 ′ can be removed from the upper part, and at least a part of the seal material 40 ′ is adhered to the at least part of the shrink label 70.

  Therefore, according to the double container 3, at least a part of the seal material 40 ′ is peeled off by peeling off at least a part of the shrink label 70, thereby facilitating the operation of communicating the outside air introduction hole 14 with the outside world. can do.

  Further, in the double container 3 according to the present embodiment, the sealing material 40 ′ is detachably attached to the outer surface of the outer layer body 10 and the planned removal portion 43 adhered to the at least part of the shrink label 70. And a cover material 45 that is connected to the planned removal portion 43 via the planned cutting portion 44 and is attached to the outer surface of the outer layer body 10 so as to cover the check valve 30. ing.

  Therefore, according to the double container 3, by stripping off at least a part of the shrink label 70, the planned removal portion 43 of the sealing material 40 ′ can be stripped together and the outside air introduction hole 14 can communicate with the outside world. it can. Further, it is possible to maintain the state where the check valve 30 is covered with the covering portion 45 of the sealing material 40 ′.

  The above description shows only one embodiment of the present invention, and various modifications can be made within the scope of the claims. For example, although the dispensing cap 50 has been described as being undercut engaged with the mouth portion 11, for example, it may be engaged with a screw. In addition, as the check valve 30, a duckbill valve or other various configurations can be applied. Or you may make it restrict | limit the amount of the air leakage at the time of a squeeze by forming the external air introduction hole 14 in slit shape, without providing the non-return valve 30. FIG. Moreover, although the double containers 1-3 were demonstrated as what is what is called a delamination container by which the inner layer body 20 was peeled and laminated | stacked inside the outer layer body 10, it is not limited to this, For example, an inner layer body A double container in which 20 and the outer layer body 10 are individually formed and combined after formation may be used.

1, 2 and 3 Double container 10 Outer layer body 11 Mouth portion 12 Body portion 13 Bottom portion 13a Bottom outer edge portion 13b Bottom portion recess portion 14, 14 'Outside air introduction hole 14a Inner edge portion 14b' One end portion 14c of outside air introduction hole 14 ' The other end 15 of the 'outside air introduction hole 14' 15 recessed portion 16 pinch-off portion 20 inner layer 30 check valve 31 penetrating portion 32 protruding portion 32a seating portion 33 elastic arm portion 40, 40 'sealing material 41 sticking portion 42 protruding piece 43 removal Planned portion 44 Planned cutting portion 45 Cover portion 50 Pouring cap 51 Pouring tap 52 Hinge 53 Lid body 54 Mounting cylinder 55 Bulkhead 56 Pouring cylinder 57 Cylindrical wall 57a Inclined wall 58 Vertical rib 59 Spherical body 60 Top wall 61 Peripheral wall 62 Seal Cylinder 63 Pin 70 Shrink label 70a Portion corresponding to upper part of pouring cap and outer layer body 70b Remaining portion M Filling space N Internal space

Claims (7)

An outer layer body that forms a bottle shape having a mouth portion, a body portion, and a bottom portion and forms an outer shell of a container, an inner layer body that is housed inside the outer layer body, and an outside air introduction hole that penetrates the outer layer body In the double container capable of introducing the outside air into the internal space formed between the outer layer body and the inner layer body from the outside air introduction hole in accordance with the volume reduction deformation of the inner layer body,
The double container, wherein the outside air introduction hole can communicate with the outside world by peeling off at least a part of a sealing material adhered to the outer surface of the outer layer body. The body part of the outer layer body includes a recess that is locally recessed inward,
The outside air introduction hole is formed in the recess,
The outside air introduction hole is provided with a check valve that allows outside air to be introduced into the internal space while preventing air leakage from the internal space.
The double container according to claim 1, wherein the sealing material is attached so as to cover the concave portion.   The double container according to claim 2, wherein the check valve includes a protruding portion that protrudes from the outside air introduction hole into the internal space. The check valve includes a penetrating portion that penetrates the outside air introduction hole while leaving a gap with an outer peripheral surface of the outside air introduction hole,
One end of the penetrating part is connected to the protruding part,
The protruding portion includes a seating portion that is seated on an inner edge portion of the outer peripheral surface of the outside air introduction hole to prevent air leakage from the internal space,
The double container according to claim 3, wherein a plurality of elastic arm portions that contact the outer surface of the outer layer body in the concave portion are provided in the other end portion of the penetrating portion.   The sealing material surrounds the outside air introduction hole and is attached to the outer surface of the outer layer body so as to be peelable, and one end is connected to the sticking portion and the other end is the outer surface of the outer layer body The double container according to any one of claims 1 to 4, wherein the double container is a film material provided with a gripping protruding piece separated from the container. A pouring cap having a pouring plug attached to the mouth of the outer layer body and a lid for opening and closing the pouring plug;
A shrink label attached to at least an upper portion of the body portion of the outer cap body and the pouring cap;
At least a portion of the shrink label can be removed from the top of the dispensing cap and the trunk of the outer layer body,
The double container according to any one of claims 2 to 4, wherein the at least part of the sealing material is bonded to the at least part of the shrink label.   The sealing material is detachably attached to the outer surface of the outer layer body, and is connected to the to-be-removed portion adhered to the at least part of the shrink label, and is connected to the to-be-removed portion via the to-be-cut portion. The double container according to claim 6, which is a film material provided with a covering portion that is adhered to an outer surface of the outer layer body and covers the check valve.

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