JP6521747B2 - Method for filling contents and double container - Google Patents

Description

  The present invention relates to a double container provided with an outer layer body forming the outer shell of a container, an inner layer body housed inside the outer layer body, and an external air introduction hole penetrating the outer layer body, and in particular, the heat of the contents It is intended to prevent shower water from entering the outside air introduction hole at the time of cooling after filling.

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

  Also, for example, in the case where liquid food such as soy sauce, soy sauce-containing seasoning, vinegar, cooking liquor, etc. is contained, the contents in a high temperature state are filled as a procedure for filling the contents into a container for commercialization. It is known to provide a hot filling step and a cooling step of cooling the container and contents using shower water after the step.

JP 2008-207860 A

  However, when the heat filling step and the cooling step are applied to the conventional double container as described above, the shower water is cooled from the outside air introduction hole at the time of cooling after the heat filling and the inner space of the container (the outer layer and the inner layer Problem of intruding into the Further, when the shower water intrudes from the outside air introduction hole as described above, the barrier property of the inner layer may be lowered depending on the material of the inner layer and the like.

  The present invention has been developed to solve the above-mentioned problems, and it is an object of the present invention to provide a double container capable of preventing shower water from invading from the outside air introduction hole at the time of cooling after heat filling of contents. Do.

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

2. The body of the outer layer is provided with a recess that is locally recessed inwardly,
The outside air introduction hole is formed in the recess,
The outside air introduction hole is provided with a check valve which allows the introduction of outside air into the internal space while preventing the air from leaking from the internal space,
The double container according to claim 1, wherein the sealing material is pasted so as to cover the recess.

3. The double container according to claim 2, wherein the check valve includes a protrusion projecting from the outside air introduction hole into the internal space.

4. The check valve includes a through portion penetrating the outside air introduction hole while leaving a clearance between the outside air introduction hole and the outside air introduction hole.
One end of the penetrating portion is connected to the projecting portion,
The projecting portion includes a seating portion that is seated at an inner edge of the outer peripheral surface of the outside air introduction hole to prevent air from leaking from the internal space.
3. The double container according to 3 above, wherein a plurality of elastic arms that abut the outer surface of the outer layer body in the recess are provided at the other end side portion of the through portion.

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

6. A pouring spout mounted on the mouth of the outer layer body and a pouring cap having a lid for opening and closing the spouting stopper;
And at least the pouring cap and a shrink label attached to the upper portion of the barrel of the outer layer body,
At least a portion of the shrink label may be removed from the top of the pouring cap and the barrel of the outer layer;
The double container according to any of the claims 2 to 4, wherein the at least part of the sealing material is adhered to the at least part of the shrink label.

7. The sealing material is releasably adhered to the outer surface of the outer layer and connected to a portion to be removed adhered to the at least a part of the shrink label, and the portion to be removed via a portion to be cut. The double container according to the above 6, which is a film material provided with a covering portion attached to the outer surface of the outer layer to cover 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 shielding the outside air introduction hole from the outside by the sealing material attached to the outer surface of the outer layer body. Can be prevented. Moreover, after that, at least a part of the sealing material is peeled off to allow the outside air introduction hole to communicate with the outside, whereby the outside air can be introduced when the container is used.

  Therefore, according to the present invention, it is possible to provide a double container capable of preventing shower water from entering the outside air introduction hole at the time of cooling after hot filling of contents.

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 concerning other embodiments of the present 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 the 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 the state before opening and (b) shows the state after opening.

Hereinafter, the present invention will be more specifically illustrated and described with reference to the drawings.
In the present specification, the vertical direction is based on the erected state of the double container, and the side where the mouth of the outer layer is located is above (for example, the upper in FIG. 1) the bottom of the outer layer is located. The side is the lower side (for example, the lower side in FIG. 1).

First, a double container 1 according to an embodiment of the present invention will be exemplified and described in detail with reference to FIGS. 1 to 3.
As shown in FIGS. 1 and 2, the double container 1 according to the present embodiment includes an outer layer body 10 forming an outer shell of the container, and a volume-variable deformable inner layer body 20 housed inside the outer layer body 10. Is equipped. In the present embodiment, an adhesive band (not shown) for partially bonding the outer layer body 10 and the inner layer body 20 to each other is provided between the outer layer body 10 and the inner layer body 20. It is also possible not to provide it.

  Here, the double container 1 in the present embodiment includes the outer layer body 10 made of synthetic resin, the inner layer body 20 formed of a synthetic resin having low compatibility with the outer layer body 10, the outer layer body 10 and the inner layer body 20: A strip-like adhesive layer formed of a synthetic resin having adhesiveness to 20, that is, a lamination of an adhesive band, and blow molding a parison formed by laminating these synthetic resins. Obtained by Here, in the double container 1 of the present embodiment, the outer layer body 10 has a two-layer structure of the outer low density polyethylene (LDPE) and the inner polypropylene resin (PP), and the inner layer 20 has an outer ethylene vinyl alcohol copolymer. It has a two-layer structure of a polymerized resin (EVOH) and an inner modified polyolefin resin ("Admar" (registered trademark) manufactured by Mitsui Chemicals, Inc.). In addition, the adhesive band is made of a modified polyolefin resin ("Admar" (registered trademark)). In addition, in this embodiment, in order to provide squeeze property, although the layer of the outer side of the outer-layer body 10 is comprised with low density polyethylene (LDPE), a polypropylene resin (PP), medium density polyethylene resin (MDPE), or It is also possible to use high density polyethylene resin (HDPE). Moreover, the layer of the polypropylene resin (PP) which comprises the outer-layer body 10 of this embodiment is provided in order 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 materials of the outer layer body 10, the inner layer body 20, and the adhesive band are not particularly limited as long as the inner layer body 20 can be peeled off from the outer layer body 10. It may be a single layer structure or a multilayer structure. Also, the adhesive band does not have to be provided.

  The outer layer body 10 is in the shape of a bottle having a mouth 11, a body 12 and a bottom 13, and has flexibility to be restored. In the present embodiment, the body 12 has a circular cross-section, and has a cylindrical shape in which the upper portion has a diameter decreasing toward the mouth 11. However, the present invention is not limited thereto. It can be a shape such as a shape.

  The inner layer body 20 has a filling space M capable of being filled with contents (not shown) inside, and can be reduced in volume by being peeled off from the laminated outer layer body 10. That is, the outer layer body 10 is provided with the outside air introducing hole 14 penetrating the outer layer body 10, and the outer layer body 10 and the inner layer body 20 are separated from the outside air introducing hole 14 according to the volume reduction deformation of the inner layer body 20 Outside air is introduced into an internal space N formed between the two.

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

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

  The seating portion 32 a is not necessarily required to seal the outside air introducing hole 14 when the double container 1 is not used, but is configured to seal the outside air introducing hole 14 also when the double container 1 is not used. In such a case, it is preferable because intrusion of dust and the like from the outside into the internal space N can be more reliably prevented when not in use. Moreover, when comprised in this way, since the external air introduction hole 14 is sealed at the start time of a squeeze, the leak of the air from the interior space N at the time of a squeeze start can be prevented more reliably. . It is more preferable that the plurality of elastic arms 33 be configured to be urged against the outer surface of the outer layer body 10 in the recess 15 so as to apply an urging force for seating the seating portion 32a. Thus, it is possible to prevent the intrusion of dust and the like when not in use as described above and the air leakage at the start of the squeeze more reliably. The check valve 30 can be made of, for example, a synthetic resin.

  Further, the outside air introducing hole 14 is shielded from the outside by a sealing material 40 attached to the outer surface of the outer layer body 10. In the present embodiment, the sealing member 40 surrounds the outside air introducing hole 14 to be attached to the outer surface of the outer layer 10 in a peelable manner, and one end is connected to the adhering portion 41 and the other end Is a film material provided with a gripping projection 42 separated from the outer surface of the outer layer body 10. The sealing material 40 is attached to cover the recess 15.

  Further, as shown in FIGS. 1 and 2, the double container 1 is provided with a pouring cap 50. The pouring cap 50 includes a pouring spout 51 engaged with and held by the mouth portion 11 and a lid 53 connected to the pouring spout 51 via a hinge 52 and opening and closing the spout 51. There is. Note that the lid 53 may be separately formed without providing the hinge 52, and may be screw engaged or undercut engaged with the pouring spout 51.

  The pouring spout 51 is erected upward from the mounting cylinder 54 engaged with the outer circumferential surface of the opening 11 undercut engagement, the partition 55 covering the upper part of the mounting cylinder 54, and the partition 55, and the inside is the filling space M And a delivery tube 56 connected to the A cylindrical wall 57 is continuous with the lower side of the pouring cylinder 56, and a plurality of longitudinal 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 radially inward of the longitudinal rib 58, and is retained and held by a bulging portion provided at the upper end of the longitudinal rib 58. At the lower part of the cylindrical wall 57, an inclined wall 57a whose diameter is reduced downward is provided. Here, the spherical body 59 moves with its own weight along the longitudinal rib 58, and as shown in FIG. 1, when the double container 1 is in the erect position, it abuts on 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 formed by connecting the peripheral wall 61 to the outer edge portion of the top wall 60 covering the upper side of the pouring spout 51, and the peripheral wall 61 is connected to the mounting cylinder 54 by the hinge 52. Further, on the lower surface of the top wall 60, a seal cylinder 62 in fluid-tight contact with the pouring cylinder 56 is provided. 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 abut on the spherical body 59 before reaching the upper limit when the spherical body 59 is displaced upward. As a result, by closing the lid 53 after use of the double container 1, the spherical body 59 can be reliably dropped and brought into contact with the inclined wall 57 a, and the filling space M can be sealed.

  When applying the heat filling step and the cooling step to the double container 1, first, the contents such as liquid food are filled in the filling space M of the inner layer body 20 in the high temperature state, and the pouring cap 50 is plugged. Be done. Then, in the subsequent cooling step, the double container 1 and its contents are cooled using shower water, but the check valve 30 and the sealing material 40 described above are at least the outer layer before this shower water is applied. It is attached to the body 10. Thus, by blocking the outside air introduction hole 14 from the outside with the sealing material 40 before the shower water is applied, the volume reduction deformation of the inner layer body 20 accompanying the pressure reduction in the filling space M at the cooling time, Shower water is prevented from intruding into the internal space N from the outside air introduction hole 14.

  At this time, since the outside air can not be introduced from the outside air introducing hole 14 into the inside space N, the outer layer 10 is also reduced in volume as the inner layer 20 is reduced in volume. Preferably, the shape and the material of the outer layer body 10 are appropriately set so as not to cause a distorted deformation to deteriorate the appearance. 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. However, instead of this, the sealing material 40 is peeled off immediately after the cooling step is completed. The outer layer body 10 may be restored by communicating with the outside world.

  When the double container 1 is used, the spherical body 59 is displaced toward the dispensing cylinder 56 by opening the lid 53 and setting the double container 1 in a tilted or inverted posture. And if the outer layer body 10 is pressed (squeezed) so that the trunk | drum 12 is pinched from both sides, the leak of the air from internal space N is prevented by the non-return valve 30 being provided in the external air introduction hole 14 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 has the outer layer body 10 which is in the shape of a bottle having the mouth 11, the body 12 and the bottom 13 and which forms the outer shell of the container, and the outer layer 10 Between the outer layer body 10 and the inner layer body 20 from the outer air inlet hole 14 according to the volume reduction deformation of the inner layer body 20. In the double container 1 capable of introducing external air into the internal space N to be formed, the external air introduction hole 14 communicates with the outside by peeling at least a 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 shower water is blocked by shielding the outside air introduction hole 14 from the outside by the sealing material 40 attached to the outer surface of the outer layer 10. Can be prevented from entering the outside air introduction hole 14. Further, after that, at least a part of the sealing material 40 is peeled off to allow the outside air introducing hole 14 to communicate with the outside, whereby the outside air can be introduced when using the container.

  Further, in the double container 1 according to the present embodiment, the body portion 12 of the outer layer body 10 is provided with the recessed portion 15 locally recessed inwardly, and the outside air introducing hole 14 is formed in the recessed portion 15 The hole 14 is provided with a check valve 30 for allowing the introduction of the outside air into the internal space N while preventing the air from leaking from the internal space N, and the sealing material 40 covers the concave portion 15 and attaches it. It is configured to be worn.

  Therefore, according to the double container 1, while the check valve 30 can smoothly discharge the contents by the squeeze, it is possible to prevent the check valve 30 from protruding from the body portion 12 and damaging the appearance of the container. .

  Further, in the double container 1 according to the present embodiment, the check valve 30 is configured to include a protrusion 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 projecting portion 32 and a gap is formed between the outer layer body 10 and the outer layer body 10, It can be secured securely.

  Further, in the double container 1 according to the present embodiment, the check valve 30 is provided with the through portion 31 penetrating the outside air introduction hole 14 while leaving a clearance between the check valve 30 and the outer peripheral surface of the outside air introduction hole 14. One end of the seat 32 is connected to the projection 32, and the projection 32 is provided with a seat 32a that sits on the inner edge 14a of the outer peripheral surface of the outside air introduction hole 14 to prevent air from leaking 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 abut on the outer surface of the outer layer body 10 in the concave portion 15.

  Therefore, according to the double container 1, when the squeezing of the trunk portion 12 is performed, the seating portion 32 a of the check valve 30 is seated on the inner edge portion 14 a on the outer peripheral surface of the outside air introducing hole 14 to prevent air leakage. Can. Further, at the time of squeeze release, the plurality of elastic arms 33 are elastically deformed due to the pressure reduction of the internal space N accompanying the restoration of the trunk 12, and the seating portion 32a is sufficiently from the inner edge 14a on the outer peripheral surface of the outside air introducing hole 14. It is possible to introduce the outside air into the internal space N through the space between the plurality of elastic arms 33 and the space between the penetration portion 31 and the outer peripheral surface of the air introduction hole 14.

  Further, in the double container 1 according to the present embodiment, the sealing member 40 surrounds the outside air introducing hole 14 and is attached to the outer surface of the outer layer body 10 so as to be peelably adhered; , And the other end is a film material including a holding projection 42 spaced 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 by using the projection 42 as a grip at the start of use of the double container 1 or after the cooling process by shower water after hot filling is completed. The outside air introducing hole 14 can be opened.

Next, with reference to FIGS. 4 to 6, the double container 2 according to another embodiment of the present invention will be illustrated and described in detail.
As shown in FIGS. 4 to 6, the double container 2 according to the present embodiment does not have the check valve 30 in that the outside air introduction hole 14 'is provided in the bottom portion 13 instead of being provided in the body portion 12. Except for the points, the configuration is the same as that of the embodiment described above with reference to FIGS. 1 to 3.

  That is, in the present embodiment, the outer layer body 10 and the inner layer body 20 are sandwiched and crushed by the blow molding split mold, and the inner layer body 20 is an outer layer body in the pinch-off portion 16 formed by cutting off the tip thereof. An opening formed by peeling off the outer layer 10 and cracking the bottom of the outer layer 10 is used as the outside air introduction hole 14 '. Specifically, for example, the outside air introducing hole 14 'is formed by pressing the pinch-off portion 16 toward the mouth portion 11 after blow molding. In the figure, reference numeral 14b 'denotes one end of the outside air introduction hole 14', and 14c 'denotes the other end of the outside air introduction hole 14'.

  The pinch-off portion 16 (outside air introduction hole 14 ′) is formed in a recess 13 b that is concave toward the mouth 11 on the inside of the annular outer edge 13 a that is the ground contact surface of the bottom 13. In the present embodiment, the sealing member 40 is attached to the annular outer edge portion 13a over the entire circumference, and one end is connected to the adhering portion 41 and the other end is the outer layer 10 And a protruding projection 42 spaced from the outer surface of the film.

  When performing a cooling step after hot filling of the double container 2, the double container 2 and its contents are cooled using shower water, but the sealing material 40 is at least before the shower water is applied. It is attached to the outer layer body 10. Thus, by blocking the outside air introduction hole 14 'from the outside with the sealing material 40 before the shower water is applied, the volume reduction deformation of the inner layer 20 due to the pressure reduction in the filling space M at the time of cooling The shower water is prevented from intruding into the internal space N from the outside air introduction hole 14 '.

  At this time, since the outside air can not be introduced into the interior space N from the outside air introducing hole 14 ′, the outer layer body 10 is also reduced in volume with the volume reduction deformation of the inner layer body 20. Preferably, the shape and the material of the outer layer body 10 are appropriately set so as not to cause distortion deformation at 10 and impair the appearance. 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. However, instead of this, the sealing material 40 is peeled off immediately after the cooling step is completed, and the outside air introducing hole 14 ' The outer layer body 10 may be restored by communicating with the outside.

  When the double container 2 is used, the spherical body 59 is displaced to the side of the dispensing cylinder 56 by opening the lid 53 (see FIG. 1) and setting the double container 2 in a tilted or inverted posture, The contents can be poured out of the pouring barrel 56 by their own weight. At that time, the body 12 can be squeezed to urge the pouring of the contents. 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 enabled.

Next, with reference to FIGS. 7 to 9, the double container 3 according to still another embodiment of the present invention will be illustrated and described in detail.
The double container 3 according to the present embodiment is illustrated 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 the present embodiment, as shown in FIG. 7 to FIG. 8, the outside air introducing hole 14 is provided in the locally inwardly recessed portion 15 formed in the upper portion of the body 12. The outside air introduction hole 14 is provided with a check valve 30. Further, in the present embodiment, the sealing material 40 ′ is connected to the removal planned portion 43 attached releasably to the outer surface of the outer layer body 10, and the removal planned portion 43 via the cutting planned portion 44, And a covering portion 45 attached to the outer surface of the outer layer body 10 to cover the check valve 30.

  In addition, the double container 3 includes at least the pouring cap 50 and the shrink label 70 attached to the upper portion of the body 12 of the outer layer body 10. In the present embodiment, the shrink label 70 is attached to a region from the outer peripheral edge of the top surface of the pouring cap 50 to the outer peripheral edge of the bottom portion 13. Further, the portion 70a of the shrink label 70 corresponding to the upper portion of the pouring cap 50 and the body portion 12 of the outer layer body 10 can be separated and removed from the remaining portion 70b. On a portion 70a corresponding to the upper portion of the pouring cap 50 and the body 12 of the outer layer body 10, a portion 43 to be removed of the sealing material 40 'is bonded. In the present embodiment, the portion to be removed 43 is bonded to the shrink label 70 over the entire outer surface.

  When performing a cooling step after hot filling of the double container 3, the double container 3 and its contents are cooled using shower water, but the sealing material 40 ′ is at least before the shower water is applied. Is attached to the outer layer body 10. Thus, by blocking the outside air introduction hole 14 from the outside with the sealing material 40 ′ before the shower water is applied, the volume reduction deformation of the inner layer 20 due to the pressure reduction in the filling space M at the time of cooling The shower water is prevented from intruding into the internal space N from the outside air introduction hole 14.

  At this time, since the outside air can not be introduced from the outside air introducing hole 14 into the inside space N, the outer layer 10 is also reduced in volume as the inner layer 20 is reduced in volume. Preferably, the shape and the material of the outer layer body 10 are appropriately set so as not to cause a distorted deformation to deteriorate the appearance. After such a cooling process, attachment of the shrink label 70 and adhesion of the scheduled portion 43 of the sealing material 40 ′ to the shrink label 70 can be performed.

  Then, when using the double container 3, as shown in FIG. 9, the portion 70 a corresponding to the top of the pouring cap 50 and the upper portion of the barrel 12 of the outer layer body 10 in the shrink label 70 is peeled off. The portion 43 to be removed of the sealing material 40 'bonded to the surface 70a can be peeled off together with the portion 70a (see FIG. 9B). As a result, the outside air introduction hole 14 communicates with the outside, and the check valve 30 can be kept covered by the covering portion 45 of the sealing member 40 '. The discharge procedure of the contents after that is the same as that of the embodiment described with reference to FIGS. 1 to 3.

  As described above, the double container 3 according to the present embodiment includes the pouring spout 51 attached to the opening 11 of the outer layer 10 and the spout cap having the lid 53 for opening and closing the spout 51. 50 and a shrink label 70 attached to at least the top of the pouring cap 50 and the body 12 of the outer layer body 10, at least a portion of the shrink label 70 being formed of the pouring cap 50 and the body 12 of the outer layer body 10; It can be removed from the top, and at least a portion of the sealing material 40 ′ is configured to be adhered to the at least a portion of the shrink label 70.

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

  In the double container 3 according to the present embodiment, the sealing material 40 ′ is peelably attached to the outer surface of the outer layer body 10 and the portion to be removed 43 is adhered to the at least a part of the shrink label 70. And a covering portion 45 connected to the portion 43 to be removed via the portion to be cut 44 and attached to the outer surface of the outer layer 10 to cover the check valve 30. ing.

  Therefore, according to the double container 3, by peeling off at least a part of the shrink label 70, the portion 43 to be removed of the sealing material 40 ′ is also peeled off together to make the outside air introducing hole 14 communicate with the outside. it can. Further, the non-return valve 30 can be kept covered by the covering portion 45 of the seal member 40 '.

  The foregoing merely shows 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 in an undercut engagement with the mouth portion 11, it may be, for example, a thread engagement. In addition, as the check valve 30, a duck bill valve or other various configurations can be applied. Alternatively, the amount of air leakage at the time of squeeze may be limited by forming the outside air introduction hole 14 in a slit shape without providing the check valve 30. Although double containers 1 to 3 have been described as a so-called delamination container in which inner layer body 20 is peelably stacked on the inside of outer layer body 10, the present invention is not limited to this. For example, inner layer body 20 and the outer layer body 10 may be formed separately, and may be a double container combined after formation.

1, 2, 3 double container 10 outer layer body 11 mouth 12 body part 13 bottom 13a bottom outer edge 13b recess in bottom 14 14, 14 'outside air introduction hole 14a inside edge 14b' one end 14c of outside air introduction hole 14 ''Other end of the outside air introduction hole 14' 15 Recess 16 Pinch-off part 20 Inner layer body 30 Check valve 31 Penetration part 32 Projection part 32a Seated part 33 Elastic arm 40, 40 'Seal material 41 Adhered part 42 Protruded piece 43 Planned part 44 Planned cut part 45 Covered part 50 Dispensing cap 51 Dispensing plug 52 Hinge 53 Lid 54 Mounting cylinder 55 Partitioning 56 Partitioning 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 the top of the barrel of the dispensing cap and outer layer 70b Remaining portion M Filling space N Internal space

Claims (8)

A method for filling contents into a double container, the method comprising:
The double container has a bottle-like shape having a mouth, a body and a bottom and an outer layer forming the outer shell of the container, an inner layer housed inside the outer layer, and the outer layer. An external air introducing hole is provided, and the external air can be introduced from the external air introducing hole into an internal space formed between the outer layer body and the inner layer body in accordance with the volume reduction deformation of the inner layer body ,
The outside air introducing hole, Ri outside communicable with Der by causing peeling at least a portion of the adhered by a sealing material to the outer surface of the outer layer member,
A heat filling step of heat filling the contents into the inner layer body;
And cooling the dual container and the contents with shower water after the hot filling step.
Wherein prior to application of the shower water in the cooling step, the filling method of the contents, characterized in sticking to Rukoto to block the sealing material from outside the outside air introduction hole to the outer surface of the outer layer member. The method for filling contents according to claim 1, wherein immediately after the completion of the cooling step, at least a part of the sealing material is peeled off to make the outside air introduction hole communicate with the outside. The body of the outer layer is provided with a recess that is locally recessed inwardly,
The outside air introduction hole is formed in the recess,
The outside air introduction hole is provided with a check valve which allows the introduction of outside air into the internal space while preventing the air from leaking from the internal space,
The method for filling contents according to claim 1 or 2 , wherein the sealing material is pasted so as to cover the recess. The method for filling contents according to claim 3 , wherein the check valve comprises a protrusion protruding from the outside air introduction hole into the internal space. The check valve includes a through portion penetrating the outside air introduction hole while leaving a clearance between the outside air introduction hole and the outside air introduction hole.
One end of the penetrating portion is connected to the projecting portion,
The projecting portion includes a seating portion that is seated at an inner edge of the outer peripheral surface of the outside air introduction hole to prevent air from leaking from the internal space.
The method for filling contents according to claim 4 , wherein a plurality of elastic arms that abut the outer surface of the outer layer body in the recess are provided at the other end side portion of the through portion. The sealing material surrounds the outside air introducing hole and is attached to the outer surface of the outer layer body so as to be peelably attached, and one end is connected to the adhesion portion and the other end is the outer surface of the outer layer body The method for filling contents according to any one of claims 1 to 5 , wherein the method is a film material provided with a holding projection spaced from the space. An outer layer forming a bottle having a mouth, a body and a bottom and forming an outer shell of the container, an inner layer housed inside the outer layer, and an external air introducing hole penetrating the outer layer A double container capable of introducing outside air into the internal space formed between the outside layer body and the inside layer body from the outside air introducing hole in accordance with the volume reduction deformation of the inside layer body,
A pouring spout mounted on the mouth of the outer layer body and a pouring cap having a lid for opening and closing the spouting stopper;
And at least the pouring cap and a shrink label attached to the upper portion of the barrel of the outer layer body,
The outside air introduction hole can communicate with the outside by peeling at least a part of the sealing material attached to the outer surface of the outer layer body,
The body of the outer layer is provided with a recess that is locally recessed inwardly,
The outside air introduction hole is formed in the recess,
The outside air introduction hole is provided with a check valve which allows the introduction of outside air into the internal space while preventing the air from leaking from the internal space,
The sealing material is stuck to cover the recess,
At least a portion of the shrink label may be removed from the top of the pouring cap and the barrel of the outer layer;
Wherein at least a portion, double container, characterized in that it is bonded to at least a portion of the shrink label of the sealing material. The sealing material is releasably adhered to the outer surface of the outer layer and connected to a portion to be removed adhered to the at least a part of the shrink label, and the portion to be removed via a portion to be cut. The double container according to claim 7 , which is a film material provided with a covering portion attached to the outer surface of the outer layer to cover the check valve.

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