JP2004099079A - Multi-layer container - Google Patents

Abstract

When dropping stacked multi-layer containers from the lower part and taking out one by one, there is no occurrence of so-called blocking of overlapping and not dropping, or falling of several pieces at the same time. To provide a multilayer container capable of stacking a larger number of multilayer containers.
A plurality of circumferential positions at height positions HA and HB closer to a bottom member 16 side than a center O of a container height H of an inner body member 3 forming an inner surface of a multi-layer container are formed in the circumferential direction. Small protrusions 6, 7, 8 of the same shape facing the container center line C-C are provided at intervals, the tops 9 thereof are positioned in the same phase in the container height direction, and the bottom periphery of the stacked upper containers is provided. 10 is received at the top 9 of the small projections 6, 7, 8 of the lower container.
[Selection diagram] FIG.

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to an improvement of a multi-layer container in which a number of containers are stacked and the contents are filled out one by one sequentially from the lowest container.
[0002]
[Prior art]
As this kind of multi-layer container, a vertically long semi-cylindrical convex portion is provided on a body portion to improve stackability, or a protruding portion is provided on an inner wall surface of a plastic single-layer molded container to improve stackability. However, there is no technical information on a multilayer container that maintains a good appearance, has a heat insulating effect, can reduce the stack height, and does not cause blocking. (For example, see Patent Document 1)
[0003]
[Patent Document 1]
JP-A-11-278455 (page 2, FIG. 1, FIG. 2, FIG. 8)
[0004]
[Problems to be solved by the invention]
ADVANTAGE OF THE INVENTION This invention does not generate | occur | produce blocking, but can reduce the stack height of a fixed number of multilayer containers, or can increase the number of multilayer containers which can be accommodated in a fixed stack height, and can also maintain favorable appearance. In addition, the present invention provides a multi-layer container having a structure capable of increasing the strength of the torso at the time of gripping, improving the heat insulating property of the torso, and not reducing the production efficiency of the multi-layer container itself. Is an issue.
[0005]
[Means for Solving the Problems]
In order to solve the above problem, in the invention of claim 1, the inner trunk member forming the inner surface of the multi-layer container is provided at a plurality of circumferential positions at positions closer to the bottom member than the center of the container height. The small protrusions of the same shape facing the center line of the container are provided at equal intervals in the circumferential direction, and the tops of the small protrusions are located in the same phase in the height direction of the container.
[0006]
According to the second aspect of the present invention, in the first aspect of the present invention, the protrusion width of the top of the small protrusion in the container center line direction and the circumferential direction is such that the bottom peripheral edge of the upper container at the time of stacking can be stably placed. At least one of the circumferential protrusion width of the small protrusion and the protrusion length in the container vertical direction has a pressure-resistant strength capable of supporting the weight of all the multilayer containers in the predetermined stack height. Added a configuration requirement that
[0007]
According to a third aspect of the present invention, in any one of the first and second aspects of the invention, the container body includes a plurality of body members forming a heat insulating layer, and the small protruding portion is formed on an inner body member forming the inner surface of the container. Added the requirement of being formed.
[0008]
BEST MODE FOR CARRYING OUT THE INVENTION
FIGS. 1 and 2 show a first embodiment to which the first, second and third aspects of the present invention are applied, and a cup-shaped multilayer container 1 (hereinafter simply referred to as a container). 2) is formed as shown in FIG. 2 by a trunk portion 5 and a bottom member 16 which are formed by laminating the inner trunk member 3 and the outer trunk member 4, and in the illustrated example, the outer trunk member 4 is made of a material having a large heat insulating property. However, it is a matter of course that a multi-layer structure in which a body member having a large heat insulating property is interposed between the inner body member 3 and the outer body member 4 may be used.
[0009]
The inner trunk member 3 has the same small shape toward the container center line CC between the height positions HA and HB closer to the bottom member 16 than the center O of the container height H shown in FIG. The protrusions 6, 7, 8 are provided at a plurality of positions at equal intervals in the circumferential direction, in the illustrated example, at four positions at equal intervals in the circumferential direction, and are protruded by press forming means or the like. In the illustrated example, the fourth small protruding portion is not shown because it is a partially cutaway drawing.
[0010]
The small projections 6, 7, 8 are such that the top 9 is positioned in the same phase in the direction of the container height H, and the width W of the top 9 in the direction of the container center line CC is: In FIG. 2, the protrusion width W is such that the bottom peripheral edge 10 of the stacked upper container 1A can be stably placed on the upper container 1A, and the small protrusions 6, 7, 8 have a peripheral wall 11 in the container vertical direction, that is, The projecting length L of the container 1 in the height direction, that is, the length L between the height positions HA and HB is a length capable of retaining the pressure resistance capable of supporting the weight of all the containers in a predetermined stack height. Has been selected.
[0011]
The container 1 according to the present invention has the above-described configuration, and the top 9 of the small protrusions 6, 7, 8 of the lower container 1B that supports the upper container 1A in the stacking direction is in the direction of the container center line CC. Has a dimension that allows the bottom peripheral edge 10 of the upper container 1A to be stably mounted, and the vertical direction of the container on the peripheral wall 11 of the small projections 6, 7, 8, ie, the height of the container 1. The protruding length L in the direction depends on the number of stacks of the containers 1 preset in the continuous filling apparatus for the objects to be stored in the containers 1, that is, can support the weight of all the containers in the stack height of one filling station. In the case of a lightweight container such as a cardboard only, or a multi-layer container such as a cardboard and a foamed synthetic resin sheet, the small protrusions 6, 7, 8 in the height direction of the container 1 By selecting the short and small dimensions of the protrusion length L of the It can be prepared in the stack height, and the projection width W of the top 9 of the small projections 6, 7, 8 is set to a size that can stably mount the bottom peripheral edge 10 of the upper container 1A. In addition, a large number of stacked containers 1 can be continuously supplied without blocking.
[0012]
Structurally, the small projecting portions 6, 7, 8 can be formed only by pressing from the surface side by a roll, that is, from the outer surface side of the container 1 at the time of forming the inner trunk member 3, so that the number of parts, the number of processes, etc. are increased. And the inner trunk member 3 formed by pressing the small projections 6, 7, 8 is covered with the outer trunk member 4, so that the appearance is not impaired.
[0013]
Further, the small protrusions 6, 7, 8 exhibit a reinforcing effect like a reinforcing rib and a function of improving a heat insulating effect by forming a space when gripping with fingers.
[0014]
FIGS. 3 and 4 show a multi-layer container 2 according to a second embodiment, in which small projections 12, 13, and 14 are formed on the inner surface of the inner body member 15 so as to protrude longer in the circumferential direction. 2 is different from the first embodiment shown in FIG. Since the illustrated example is a partially cutaway view, one of the four small protrusions formed at equal intervals in the circumferential direction is not shown.
[0015]
In this embodiment, since the small protrusions 12, 13, and 14 are formed in the circumferential direction of the inner surface of the inner trunk member 15, the formation position is further increased on the bottom member 16 as compared with the first embodiment. It can be formed in close proximity, so that more multilayer containers can be stacked within a given stack height.
[0016]
In addition, since the bearing area of the upper multilayer container is large, the bearing of each multilayer container is assured and stable, and the number of small protrusions 12, 13, and 14 is two or more if the circumferential length is long. Three is enough. In addition, the reinforcing effect and the heat insulating effect at the time of gripping by the fingers are felt to be increased by an increase in the contact area between the portions formed on the small protrusions 12, 13, and 14 and the finger pad.
[0017]
【The invention's effect】
According to the first aspect of the present invention, the small projection supporting the bottom edge of the stacked multilayer container is positioned closer to the bottom member than the center of the height of the container, and its top is positioned in the container height direction. Since they are located in the same phase, if the stack height is the same, the number of stacks can be increased as compared with a conventional container in which the top is close to the center of the container height, and the size of the small protrusion in the container height direction Has an effect that the number of stacks can be further increased. Also, since the small protrusion is formed on the inner trunk member of the multi-layer container, the outer surface side is covered with the outer trunk member, so that even if it is formed on the inner trunk member by pressing means, it does not impair the container appearance. Has an effect.
[0018]
Further, there is a space for the small protrusion between the inner trunk member and the outer trunk member, so that the heat insulation effect can be increased, the strength of the grip trunk member can be increased, and the heat insulation of the grip against the finger pad can be improved. It also has effects such as gain.
[0019]
Further, in the case of using a cardboard or a heat insulating sheet similar to the cardboard as a material, it is sufficient to only add a press forming step of a small protruding portion at the time of forming, so that the production efficiency of the multi-layer container is not reduced, and Since the increase is only required by the addition of the press-formed member, the effect of minimizing the increase in production cost is also obtained.
[0020]
Despite the above-mentioned effects, the stacked upper multi-layer container is supported on the bottom periphery thereof at the top of the small protrusion of the lower multi-layer container, so that the blocking of each multi-layer container is prevented. There is also an effect that a reliable take-out that does not occur can be realized.
[0021]
According to the second aspect of the present invention, if the small projecting portion of the multi-layer container has a small projecting width in the container circumferential direction and a large projecting length in the container vertical direction, it has a pressure resistance strength capable of supporting a large weight, If the projecting width is made large and the projecting length in the vertical direction of the container is made small, the pressure resistance is slightly lower than that of the small projecting portion, but the support of the upper multilayer container is more stable, and the small projecting portion is connected to the bottom member. Can be formed in close proximity to each other, so that the number of multilayer containers that can be stacked within a certain stack height can be increased.
[0022]
According to the invention of claim 3, even when the multi-layer container is constituted by a plurality of body members forming a heat insulating layer, the inner body member is made of a material capable of press-molding the small protruding portion, so that no blocking occurs. It is effective in providing a multilayer container having good stacking properties.
[Brief description of the drawings]
FIG. 1 is a partially cutaway perspective view showing a state immediately before a combination of an inner trunk member and an outer trunk member of a multilayer container according to a first embodiment of the present invention.
FIG. 2 is a side view in which two multilayer containers shown in FIG. 1 are stacked and partially shown as a longitudinal section.
FIG. 3 is a partially cutaway perspective view similar to FIG. 1 of a multilayer container according to a second embodiment of the present invention.
FIG. 4 is a side view in which two multi-layer containers shown in FIG. 3 are stacked, and a part thereof is shown in a longitudinal section.
[Explanation of symbols]
1, 2 Multi-layer container 1A Upper container 1B Lower container 3 Inner body member 4 Outer body member 5 Body part 6, 7, 8 Small protruding part 9 Top of small protruding part 10 Bottom peripheral edge 16 Bottom member C-C Center line L Projection length H of small protrusion in container height direction Container heights HA, HB Height position O Center W Projection width

Claims (3)

In the inner body member forming the inner surface of the multilayer container, at a plurality of circumferential positions at a height position closer to the bottom member side than the center of the container height, at equal intervals in the circumferential direction, the container center line A multi-layer container in which small projecting portions of the same shape toward each other are protruded with their tops positioned in the same phase in the container height direction. The projecting width of the top of the small protrusion in the container center line direction and the circumferential direction is a dimension that can stably mount the bottom periphery of the upper container during stacking, and the circumferential protrusion width of the small protrusion. 2. The multilayer container according to claim 1, wherein at least one of the dimension of the container and the vertical length of the container has a pressure-resistant strength capable of supporting the weight of all upper multilayer containers in the stack height. The multilayer container according to claim 1 or 2, wherein the container body comprises a plurality of body members forming a heat insulating layer, and a small protrusion is formed on an inner body member forming an inner surface of the container.

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