JP6534329B2 - Double container - Google Patents

Description

  The present invention is a bottle having a mouth, a body and a bottom, and is formed on an outer layer forming an outer shell of a container, a volume-variable and deformable inner layer housed inside the outer layer, and the bottom. And an external air introduction hole which enables external air to be introduced between the inner layer and the outer layer in association with a volume reduction deformation of the inner layer, and a cap mounted on the opening and discharging the contents contained in the inner layer. In particular, it is an object of the present invention to prevent the occurrence of the ejection or dripping of the contents from the cap due to the change of the outside air temperature.

  As containers for storing cosmetics such as lotions, shampoos, rinses, liquid soaps, food seasonings, etc., an outer layer body forming the outer shell of the container and a volume-reducible deformable housed inside the outer layer body A double container (de-laminate) in which the outer layer body is provided with an outside air introduction hole communicating with the inner layer body so that only the inner layer body is deformed in a volume-reducing manner when the contents are poured out. The container is also known) (see, for example, Patent Documents 1 and 2).

JP, 2015-48115, A JP, 2015-91719, A

  In such a conventional double container, as shown in FIG. 1, when water W adheres to the support surface S on which the double container 1 is placed, it is caused by a change in the outside air temperature, etc. Water W may intrude between the inner layer 3 and the outer layer 4 from the outside air introduction hole 2. Then, when the outside air introduction hole 2 is closed by the moisture W in the upright state, when the outside air temperature rises, the air layer between the inner layer 3 and the outer layer 4 expands and pressure is applied to the inner layer 3. The contents (not shown) contained in the filling space M of the inner layer 3 may be ejected from the mouth 5a at the same time the cap 5 is opened. If the double container 1 is placed on the support surface S with water W, the same phenomenon as described above is likely to occur when the ground surface 6a at the bottom 6 of the double container 1 is closed by the water W, At the same time as opening the cap 5, the contents may be spouted. In addition, when sealing with the cap 5 is in an incomplete state, dripping of contents may occur gradually at the mouth 5 a of the cap 5.

  An object of the present invention is to solve such a problem, and an object thereof is to provide a container having an open air introduction hole at the bottom and a content from a cap resulting from a change in open air temperature. It is in place to prevent the generation of spout or dripping.

That is, the gist configuration of the present invention is as follows.
1. An outer layer body having a mouth portion, a body portion and a bottom portion, which forms a shell of a container, a volume-decreasing deformable inner layer body housed inside the outer layer body, and the inner layer is formed at the bottom portion An external air introduction hole which enables external air to be introduced between the inner layer body and the outer layer body in accordance with a volume reduction deformation of the body, and a cap which is attached to the mouth and discharges the contents contained in the inner layer body In a double container with
The double container, wherein the ground contact surface at the bottom portion extends in the circumferential direction of the bottom portion and includes an intermittent portion at at least one place.

2. The outside air introduction hole has a linear shape extending in the radial direction of the bottom,
The double container according to the above 1, wherein the intermittent portion is provided at two places on an extension of the linear outside air introduction hole.

3. The outside air introduction hole has a linear shape extending in the radial direction of the bottom,
The said 1st or 2 double container in which the said intermittent part is provided in two places on the imaginary line orthogonal to the said linear open air introduction hole.

  According to the present invention, even when water adheres to the supporting surface on which the double container is placed, external air is introduced to the external air introducing hole through the intermittent portion provided on the ground contact surface extending in the circumferential direction of the bottom portion. Thus, it is possible to prevent moisture from invading between the inner layer body and the outer layer body, and preventing the water from closing the entire periphery of the bottom portion between the bottom portion and the support surface.

  Therefore, according to the present invention, in the double container provided with the outside air introduction hole at the bottom, it is possible to prevent the ejection of the contents from the cap or the occurrence of dripping due to the change of the outside air temperature.

It is a figure which shows the conventional double container, (a) is a longitudinal cross-sectional view, (b) is a bottom view. BRIEF DESCRIPTION OF THE DRAWINGS It is a figure which shows the double container which concerns on one Embodiment of this invention, (a) is a partial cross section side view, (b) is a bottom view, (c) is one seen from an angle 90 degrees different from (a). It is a partial cross section side view. It is a figure which shows the modification of the double container of FIG. 2, (a) is a side view of the bottom part periphery of a double container, (b) is a bottom view, (c) is seen from an angle 90 degrees different from (a). It is a side view around the bottom of a double container. It is a figure which shows the other modification of the double container of FIG. 2, (a) is a side view of the bottom part periphery of a double container, (b) is a bottom view, (c) is an angle 90 degrees different from (a) It is a side view of the bottom part circumference of a double container seen from.

Hereinafter, the dual container 100 according to the embodiment of the present invention will be illustrated and described in detail with reference to FIGS.
As shown in FIG. 2, the double container 100 (hereinafter also referred to simply as a container) is in the shape of a bottle having a mouth 11, a body 12 and a bottom 13, and is an outer layer forming the outer shell of the container 100. 20, and a container main body 40 provided with a volume-variable deformable inner layer 30 housed inside the outer layer 20. Further, in the present embodiment, the cap 80 having the inside plug 50, the pouring plug 60 and the lid 70 is attached to the mouth 11 of the container main body 40.

  In the present embodiment, the container body 40 is made of the outer layer body 20 made of a synthetic resin, the inner layer body 30 formed of a synthetic resin having low compatibility with the outer layer body 20, and the outer layer body 20 and the inner layer body 30. And a band-like adhesive layer formed of a synthetic resin having adhesiveness, that is, an adhesive band (not shown) is laminated, and a parison formed by laminating these synthetic resins is blow molded. It is formed by. The adhesive band is disposed between the outer layer body 20 and the inner layer body 30, and bonds the outer layer body 20 and the inner layer body 30 to each other. Note that one or two or more adhesive bands may be provided, or a configuration without an adhesive may be employed.

  The outer layer body 20 is one having resiliency and flexibility, and is formed in a substantially disc shape which is curved so as to be raised at the center and which forms a bottom portion 13 of the container 100 and an edge portion of the bottom wall 21 And the side wall 22 forming the body 12 of the container 100, and the mouth wall 23 forming the mouth 11 of the container 100, which is connected to the upper portion of the side wall 22 and has a cylindrical shape. And The outer peripheral surface of the mouth wall 23 is provided with a screw portion 23 a. Further, at the center of the bottom wall 21 of the outer layer body 20, a pinch off portion 24 formed by biting off with a blow molding split die is formed. In the present embodiment, the pinch-off portion 24 has a linear shape extending in the radial direction of the bottom portion 13 of the container 100.

  In the pinch-off portion 24, the outer layer body 20 and the inner layer body 30 are separated from each other, so that the outside air can be introduced between the inner layer body 30 and the outer layer body 20 with the volume reduction deformation of the inner layer body 30. Holes 24a are formed. The outside air introduction hole 24 a has a linear shape extending in the radial direction of the bottom portion 13 of the container 100. Further, the ground contact surface 13a of the bottom portion 13 when the container 100 is erected and placed on the support surface extends in the circumferential direction of the bottom portion 13 so as to surround the outside air introducing hole 24a and has intermittent portions 13b at two places.

  In the present embodiment, the intermittent portion 13b is provided at two places on the extension of the linear outside air introduction hole 24a. In addition, the intermittent part 13b should just be provided in at least one place. Moreover, when providing in two places, as shown, for example in FIG. 3, you may provide intermittent part 13b 'in two places on the virtual line orthogonal to the linear external air introduction hole 24a. Furthermore, for example, as shown in FIG. 4, the intermittent portion 13 b ′ ′ includes two places on the extension of the straight outside air introduction hole 24 a and two places on an imaginary line orthogonal to the straight outside air introduction hole 24 a. In addition, as shown in FIGS. 2 to 4, the shape of the intermittent portion 13 b is such that both end edges 13 b 1, 13 b 1 ′, 13 b 1 ′ ′ in the circumferential direction of the intermittent portions 13 b, 13 b ′, 13 b ′ ′ Not only the shapes parallel to each other, for example, a fan shape in which the both end edges 13b1, 13b1 ′, 13b1 ′ ′ extend radially outward, or one or both of the both end edges 13b1, 13b1 ′, 13b1 ′ ′ It may be a curved shape.

  The number, size, and shape of the intermittent portion 13b are optimally set both from the viewpoint of securing the effect of suppressing the intrusion of water and from the viewpoint of securing the stability when the container 100 which has been erected is placed. It is desirable to do. The outer appearance of the container 100 may be improved by partially shrinking the intermittent portion 13b of the bottom portion 13 by applying a shrink label to the outer layer body 20.

  The inner layer body 30 has a filling space M capable of being filled with contents inside, and can be reduced in volume by being peeled off from the laminated outer layer body 20. Here, since the trunk and the bottom of the inner layer body 30 are bonded and held to the outer layer body 20 by the adhesive band, the inner surfaces of the inner layer body 30 are partially in contact with each other and filled even if discharge of contents proceeds. It does not block part of the space M. As described above, the adhesive band is not necessarily required.

  The inside plug 50 is provided with an annular wall 52 which surrounds a cylindrical wall 51 which stands up in the central part as shown in FIG. 2 and is connected with the lower portion of the cylindrical wall 51 via a flange. Further, at the upper end edge portion of the annular wall 52, a flange portion 53 extending radially outward and in contact with the upper end of the port wall 23 is provided. At the lower part of the cylindrical wall 51, there is provided an inclined wall 54 which is reduced in diameter downward. Further, on the inner peripheral surface of the cylindrical wall 51, a plurality of longitudinal ribs 55 provided at intervals in the circumferential direction are provided.

  Further, a spherical body 56 is disposed radially inward of the longitudinal rib 55. Here, the spherical body 56 is moved by its own weight along the longitudinal rib 55, and as shown in FIG. 2, when the container 100 is in the standing posture, the spherical body 56 contacts the inclined wall 54 over the entire circumference. Thus, the filling space M of the inner layer body 30 is closed. The upper end of the longitudinal rib 55 slightly bulges radially inward to form a retaining member for the spherical body 56.

  The pouring spout 60 includes a pouring barrel 61 communicating with the cylindrical wall 51, and the pouring barrel 61 extends radially outward and is connected to the ceiling wall 62 positioned on the flange portion 53. There is. In addition, an outer peripheral wall 63 surrounding the mouth wall 23 is connected to the edge of the top wall 62. On the inner peripheral surface of the outer peripheral wall 63, a screw portion 63a corresponding to the screw portion 23a of the mouth wall 23 is provided. Thus, the pouring spout 60 is screwed to the mouth wall 23 with the inside plug 50 interposed therebetween.

  The lid 70 connects the peripheral wall 72 to the edge of the top wall 71 covering the upper side of the pouring spout 60, and connects with the hinge 73 provided between the circumferential wall 72 and the outer peripheral wall 63 of the pouring spout 60. It is a thing. The pouring spout 60 and the lid 70 may be screwed together without providing the hinge 73. On the lower surface of the top wall 71, a seal cylinder 74 in fluid-tight contact with the pouring cylinder 61 is provided. Further, a pin 75 extending downward is provided on the radially inner side of the seal cylinder 74. The pin 75 has a function of reliably dropping the spherical body 56 toward the inclined wall 54 when the lid 70 is closed, and closing the filling space M.

  When pouring out the contents from the double container 100 equipped with the cap 80 configured as described above, the spherical body 56 is poured out by opening the lid 70 and setting the container 1 in a tilted or inverted posture. The contents, which are displaced toward the cylinder 61 and contained in the filling space M, pass through the openings of the inclined walls 54 through the space between the vertical ribs 55 by their own weight, and are discharged from the pouring cylinder 61. At this time, outside air is introduced between the outer layer body 20 and the inner layer body 30 through the outside air introducing hole 24a of the pinch-off portion 24, so that only the inner layer body 30 reduces its volume while maintaining the shape of the outer layer body 20. Do.

  When the pouring out of the contents proceeds and the remaining amount decreases, the weight of the whole contents decreases, and it may be difficult to pour out the contents only by tilting the container 100. In this case, the inner layer body 30 can be pressed through air between the outer layer body 20 and the inner layer body 30 if the body portion 12 of the outer layer body 20 is pressed a little more strongly, It is possible to discharge up to. In addition, when pressing the outer layer body 20, although a part of air between the outer layer body 20 and the inner layer body 30 may leak from the outside air introducing hole 24a, the extension length and the bottom portion of the outside air introducing hole 24a By adjusting the thickness of 13 appropriately, leakage of air from the outside air introduction hole 24a can be reduced as much as possible.

  According to the double container 100 according to the present embodiment as described above, the ground contact surface extends in the circumferential direction of the bottom portion 13 even when water adheres to the support surface on which the double container 100 is placed. Since the outside air can be introduced to the outside air introducing hole 24a through the intermittent portion 13b provided in 13a, moisture intrudes between the inner layer body 30 and the outer layer body 20, and the space between the bottom portion 13 and the support surface It is possible to prevent the closure with moisture over the entire circumference of the bottom portion 13. Therefore, according to the double container 100, it is possible to prevent the generation of the ejection or the dripping of the contents from the cap 80 due to the change of the outside air temperature.

  The above description merely shows one embodiment of the present invention, and various modifications can be made within the scope of the claims. For example, although the container body 40 has been described as being formed by blow molding, the invention is not necessarily limited to such a configuration, and for example, a combination of an outer layer body (outer container) and an inner layer body (inner container) formed individually It may be configured.

DESCRIPTION OF SYMBOLS 1 double container 2 external air introduction hole 3 inner layer body 4 outer layer body 5 cap 5a mouth 6 bottom portion 6 ground portion 11 ground portion 11 body portion 13 bottom portion 13a, 13a ', 13a "ground plane 13b, 13b', 13b" intermittent portion 13b1 , 13b1 ′, 13b1 ′ ′ both ends of the intermittent portion in the circumferential direction 20 outer layer body 21 bottom wall 22 side wall 23 port wall 23 a screw portion 24 pinch-off portion 24 a outside air introduction hole 30 inner layer body 40 container main body 50 inner plug 51 cylindrical wall 52 annular Wall 53 Flange portion 54 Sloped wall 55 Vertical rib 56 Spherical body 60 Injection port 61 Injection cylinder 62 Top wall 63 Outer peripheral wall 63a Threaded portion 70 Lid body 71 Top wall 72 Peripheral wall 73 Hinge 74 Seal cylinder 75 Pin 80 Cap 100, 100 ', 100' double container S support surface W moisture M filling space

Claims (3)

An outer layer body having a mouth portion, a body portion and a bottom portion, which forms a shell of a container, a volume-decreasing deformable inner layer body housed inside the outer layer body, and the inner layer is formed at the bottom portion An external air introduction hole which enables external air to be introduced between the inner layer body and the outer layer body in accordance with a volume reduction deformation of the body, and a cap which is attached to the mouth and discharges the contents contained in the inner layer body In a double container with
The ground contact surface at the bottom extends in the circumferential direction of the bottom and has an intermittent portion at at least one place ,
The double container , wherein the intermittent portion is partially covered by a shrink label . The outside air introduction hole has a linear shape extending in the radial direction of the bottom,
The double container according to claim 1, wherein the intermittent portion is provided at two places on an extension of the linear outside air introduction hole. The outside air introduction hole has a linear shape extending in the radial direction of the bottom,
The double container according to claim 1 or 2, wherein the intermittent portion is provided at two places on an imaginary line orthogonal to the linear outside air introduction hole.

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