JP2022110041A - Thermal insulating container, manufacturing method of thermal insulating container, and inner container of thermal insulating container - Google Patents

Abstract

An object of the present invention is to provide a heat insulating container having a simple attachment/detachment structure and high heat insulation properties. A heat insulating container 100 includes a cup-shaped inner container 102 and a cylindrical exterior body 103 that can be easily attached and detached around the inner container, and the exterior body is formed in a substantially truncated pyramid shape, A first opening end that corresponds to the bottom surface of the truncated pyramid shape, and a second opening that corresponds to the truncated surface of the truncated pyramid shape and has a substantially similar shape to the first opening end and a smaller similarity ratio than the first opening end. The inner container includes an outer body support part 125 provided on a cup-shaped bottom part 122 that opens upward, and a side circumferential surface that contracts from the first open end to the second open end. and a side wall extending upward from the bottom, the second open end is supported by the exterior support when the exterior body is attached to the inner container, and the side circumference and the side wall have a gap. As such, the outer container is attached to the inner container. [Selection diagram] Figure 1

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cup-shaped heat-insulated container, and more particularly to a heat-insulated container comprising an inner container and an exterior body, the inner container and the exterior body of which can be easily attached and detached.

2. Description of the Related Art Conventionally, there is a compound container as shown in Patent Document 1, which is composed of an inner container and an outer package. In this composite container, a cylindrical outer body is provided on the outer side of a cup-shaped inner container that opens in a circular shape. It is detachable by being engaged with the bulging portion. That is, the bulging portion acts as a locking means.

In this composite container, the exterior body has a shape that conforms to the side wall of the inner container, and the side wall contacts the side wall of the inner container, so that it can be attached without providing any locking means. By providing the stopping means, the inner container and the outer casing are firmly connected without separating or rotating with each other.

Moreover, as another container, there is a composite container composed of an inner container and an outer package as shown in Patent Document 2. This composite container has a hollow structure in which the side wall portion of the inner container and the side peripheral portion of the exterior body are not in contact with each other. Used as a food container.

In this composite container, the outer shell is fixedly attached to the inner container by bonding the outer shell to the inner container at the upper end and the lower end. As a result, even if a hollow structure is adopted to improve heat insulation, the inner container and the exterior body are firmly connected without being separated from each other.

As another container, there is a composite container composed of an inner container and an outer package as shown in Patent Document 3. As in Patent Document 2, this composite container has a hollow structure in which the side wall of the inner container and the side peripheral portion of the outer package are not in contact with each other, so that the heat insulation is enhanced and the food is kept warm.

In this composite container, the lower end portion of the exterior body is folded inward and fitted into a recess formed in the inner container so that the exterior body is fixedly attached to the inner container. As a result, even if a hollow structure is adopted to improve heat insulation, the inner container and the exterior body, which have a hollow structure, are firmly coupled in a state in which they are difficult to separate.

As described above, conventional composite containers composed of an inner container and an outer package have been devised in various ways to firmly connect the outer package to the inner container.

Japanese Patent Application Laid-Open No. 2004-284683 JP-A-05-016977 Japanese Patent Application Laid-Open No. 2007-191180

However, in the composite container of Patent Document 1, the side peripheral surface of the exterior part is in contact with the side wall part of the inner container in order to firmly connect the exterior body to the inner container. Therefore, the thermal insulation of this composite container is not high. In addition, although the heat insulating container of Patent Document 2 has a high heat insulating property due to its hollow structure, it is not easy to attach and detach because the outer body is adhered to the inner container. Furthermore, in the composite container of Patent Document 3, similar to the composite container of Patent Document 2, heat insulation is high due to the hollow structure. becomes complicated.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a heat insulating container having a simple attachment/detachment structure and high heat insulating properties.

A heat-insulating container according to the present invention includes a cup-shaped inner container and a cylindrical exterior body that is easily attachable and detachable around the inner container. The exterior body is formed in a substantially truncated conical shape, and has a first open end corresponding to the bottom surface of the truncated conical shape and a truncated surface corresponding to the truncated conical shape and having a shape substantially similar to the first open end. and a second open end having a similarity ratio smaller than that of the first open end, and a side peripheral surface decreasing in diameter from the first open end toward the second open end, wherein the inner container has an exterior body supporting portion provided in the cup-shaped bottom that opens upward, and a side wall portion that extends upward from the bottom; The open end of the outer container is supported by the outer casing supporting portion, and the outer container is attached to the inner container such that the side peripheral portion and the side wall portion are spaced from each other.

The inner container includes an exterior body support portion provided in the cup-shaped bottom portion that opens upward, and a side wall portion that extends upward from the bottom portion in a substantially straight line in a side view, and the exterior body support portion is provided. In a plan view, a virtual line connecting the outermost ends of the portion has a substantially similar shape to the first and second open ends, has a smaller similarity ratio to the first open end, and has a smaller similitude ratio than the second open end. is formed so as to have a large similitude ratio, and in a state in which the exterior body is attached to the inner container, the second open end is in contact with the exterior body support portion, and the side peripheral portion and the side wall portion are in contact with each other. The outer container is attached to the inner container so as to have a gap.

According to the insulated container of the present invention, the shape of the inner container and the shape of the exterior body are determined so that the side wall portion of the inner container and the side peripheral portion of the exterior body have a space therebetween. As a result, the air in the space acts as a heat insulating material, and the inner container and the outer container are integrated to function as a heat insulating container. Furthermore, the exterior body is formed in a cylindrical shape without bending the ends, and the first and second open ends corresponding to the bottom surface and the truncated surface of the truncated cone form end surfaces. Since the second open end is in contact with the exterior body supporting portion of the inner container, the exterior body can be supported without being adhered or fitted to the inner container, and the exterior body can be easily attached to and detached from the inner container. be able to. As a result, it is possible to provide a heat insulating container with a simple attachment/detachment structure and high heat insulating properties.

In the heat-insulating container, the exterior body supporting portion has a shape substantially similar to the first and second open ends, and a virtual line connecting the outermost ends of the exterior body support portion in plan view from above, and has a shape substantially similar to that of the first and second open ends. A protruding portion radially protruding from the bottom portion may be formed so as to have a small and larger similitude ratio than the second open end.

By doing so, the inner container can be manufactured with a simple structure, which facilitates the manufacture of the heat insulating container, particularly the inner container. In addition, the stacking of the inner containers is facilitated, and the storage space for the inner containers can be reduced.

Further, the inner container includes a foot provided on the bottom, the foot expands downward in diameter, and a virtual line connecting the outermost end has a shape substantially similar to the first and second opening ends, Further, it has a similitude ratio which is smaller than that of the first opening end and larger than that of the second opening end, and a part of the hill may function as the exterior supporting portion.

By doing so, when holding the heat insulating container, the lower end of the plate extending downward from the bottom and the upper end of the cup-shaped opening can be gripped with fingers so as to sandwich from above and below. It is possible to suppress the transmission to and prevent burns and the like.

Further, in the heat-insulated container having the raised platform, the inner container may be formed of a single sheet material, and the raised platform may be formed by folding back the single sheet.

By doing so, the foot supporting the exterior body has a double structure, and the exterior body can be firmly supported.

The inner container further includes a bulging portion provided at a position corresponding to the first opening end of the exterior body in a state where the second opening end of the exterior body is in contact with the upper side of the projecting portion. The bulging portion bulges so that a virtual line connecting the outermost ends has substantially the same shape and substantially the same similarity ratio as the first opening end in a plan view.

According to such a heat-insulated container, even if the outer casing moves upward relative to the inner container, the outer casing extends substantially linearly in a side view, and the side peripheral surfaces of the outer casing become closer to each other in the downward direction. Since it comes in contact with the bulging portion of the container and does not climb over the bulging portion, it is prevented from separating upward.

The inner container includes an extension portion that further extends in the radial direction from an opening direction end of the bulging portion, and the extension end of the extension portion has a shape similar to the first opening end and the first opening end. The similarity ratio may be large with respect to the open end of .

According to such an insulated container, even if the exterior body moves upward relative to the inner container, the first open end of the exterior body is in contact with the extending portion of the inner container. Since it does not climb over, it is prevented from going upwards.

The outer body may be made of paper material, and the inner container may be made of crystalline plastic material. Crystalline plastics typified by crystalline polyethylene terephthalate (hereinafter also referred to as “C-PET”) have high heat resistance (for example, C-PET has a heat resistance of 220 degrees), but there are two It is characterized by a high degree of post-shrinkage and unsuitability for decoration such as letter printing. Therefore, if the inner container is made of a crystalline plastic material, it can accommodate high-temperature contents, but on the other hand, it is necessary to consider secondary shrinkage in designing the shape, and surface processing etc. are required when decorating. may become

However, according to such an insulated container, since the inner container is made of a crystalline plastic material, it is possible to provide a highly heat-resistant container. is formed, it has a high heat insulating property, and is very effective in accommodating a high-temperature object. In other words, it is possible to deal with high-temperature objects that are greatly affected by the heat insulating effect.

Furthermore, the exterior body has a shape in which the second open end is in contact with the exterior body supporting portion of the inner container, and is supported without bonding or fitting to the inner container, and the inner container made of the crystalline plastic material is supported. By designing the shape of the exterior body supporting portion so that the second open end remains in contact with the exterior body support portion, the exterior body can be stably supported even when the exterior body is shrunk due to secondary shrinkage. In addition, since the exterior body is attached so as to cover the side surface of the inner container, it is easy to decorate the heat insulating container as a whole by decorating the exterior body.

A method for manufacturing an insulated container according to the present invention includes a cup-shaped inner container that allows slight deformation in the circumferential direction, and a tubular shape that is easily detachable around the inner container and allows slight deformation in the circumferential direction. , wherein the exterior body is a cylindrical body formed in a truncated cone shape with the truncated surface facing downward and the bottom surface facing upward; a first open end corresponding to the bottom surface of the truncated conical shape; and a second open end corresponding to the truncated surface of the truncated conical shape and having a shape substantially similar to that of the first open end and having a similitude ratio smaller than that of the first open end. and a side peripheral surface whose diameter is reduced from the first open end toward the second open end, and the inner container is provided at the cup-shaped bottom opening upward. and a side wall portion extending upward from the bottom portion, and the exterior body support portion has an imaginary line connecting the outermost end of the exterior body support portion with a shape substantially similar to the first and second open ends, and the first opening end. A thermally insulated container is utilized which has a similarity ratio which is smaller than the open end of the second open end and greater than the second open end.

The method for manufacturing the heat-insulating container includes passing the first opening end over the exterior body supporting portion, then slightly deforming the inner container or the exterior body, and passing the first opening end over the exterior body supporting portion. and bringing the second open end into contact with the armor supporting portion.

According to the method for manufacturing an insulated container according to the present invention, the shape of the inner container and the shape of the exterior body are determined so that there is a space between the side wall portion of the inner container and the side peripheral portion of the exterior body, and the air in the space is An insulated container can be provided that acts as a heat insulator and functions as an insulated container. Furthermore, the exterior body is formed in a cylindrical shape without bending the ends thereof, and the second open end is in contact with the exterior body supporting portion, thereby preventing the exterior body from being adhered or fitted to the inner container. It is possible to manufacture an insulated container that can be supported and that the exterior body can be easily attached to and detached from the inner container.

The inner container of the insulated container according to the present invention has a cup shape that allows slight deformation in the circumferential direction, can be easily attached to and detached from the periphery, and can be equipped with a cylindrical exterior body that allows slight deformation in the circumferential direction. formed in The exterior body is formed in the shape of a truncated cone, and is a tubular body with the truncated surface facing downward and the bottom surface facing upward, and the first opening corresponding to the bottom surface of the truncated cone an end, and a second open end and the first open end which correspond to a truncated surface of the truncated cone, have a shape substantially similar to that of the first open end, and have a similarity ratio smaller than that of the first open end. and a side peripheral surface that decreases in diameter from toward the second open end. Among these, the container includes an outer body support part provided in the cup-shaped bottom part that opens upward, and a side wall part extending upward from the bottom part, and the outer body support part connects the outermost end A line has a shape substantially similar to the first and second opening ends, and has a similarity ratio smaller than that of the first opening end and larger than that of the second opening end, and in a state in which the exterior body is attached. The second open end is in contact with the exterior body supporting portion, and the inner container supports the exterior body such that the side peripheral portion and the side wall portion have a gap.

According to the inner container of the insulated container according to the present invention, the shape of the inner container and the shape of the outer body are determined so that there is a space between the side wall portion of the inner container and the side peripheral portion of the outer body, and the air in the space is An insulated container can be provided that acts as a heat insulator and functions as an insulated container. Furthermore, the exterior body is formed in a cylindrical shape without bending the ends thereof, and the second open end is in contact with the exterior body supporting portion, thereby preventing the exterior body from being adhered or fitted to the inner container. It is possible to manufacture an insulated container that can be supported and that the exterior body can be easily attached to and detached from the inner container.

INDUSTRIAL APPLICABILITY The present invention can provide a heat insulating container having a simple attachment/detachment structure and high heat insulating properties.

BRIEF DESCRIPTION OF THE DRAWINGS It is a schematic perspective view of the heat insulation container which concerns on the 1st form of implementation of this invention. 1 is a perspective view of an exterior body of a heat insulating container according to a first embodiment of the present invention; FIG. FIG. 2 is an exploded view of the exterior body of the heat insulating container according to the first embodiment of the present invention; 1 is a schematic perspective view of an inner container of an insulated container according to a first embodiment of the present invention; FIG. It is a front view of the inner container of the heat insulation container which concerns on the 1st form of implementation of this invention. 1 is a plan view of an inner container of an insulated container according to a first embodiment of the present invention; FIG. It is a bottom view of the inner container of the heat insulation container which concerns on the 1st form of implementation of this invention. 1 is a side sectional view of an inner container of an insulated container according to a first embodiment of the present invention; FIG. It is a cross-sectional perspective view which expands and shows the part of V1 of the heat insulation container shown in FIG. It is a cross-sectional perspective view which expands and shows the part of W1 of the heat insulation container shown in FIG. It is a flow figure showing a manufacturing method of a heat insulation container concerning an embodiment of the invention. It is a flow figure showing the utilization method of the heat insulation container concerning an embodiment of the invention. FIG. 5 is a schematic perspective view of an insulated container according to a second embodiment of the present invention; FIG. 4 is a schematic perspective view of an inner container of a heat insulating container according to a second embodiment of the present invention; FIG. 5 is a front view of the inner container of the heat insulating container according to the second embodiment of the present invention; FIG. 4 is a plan view of the inner container of the heat insulating container according to the second embodiment of the present invention; It is a bottom view of the inner container of the heat insulation container which concerns on the 2nd form of implementation of this invention. FIG. 4 is a side cross-sectional view of the inner container of the heat insulating container according to the second embodiment of the present invention; FIG. 2 is a side sectional view showing an enlarged V2 portion of the heat insulating container shown in FIG. 1; 2 is a side sectional view showing an enlarged W2 portion of the heat insulating container shown in FIG. 1; FIG. FIG. 4 is a diagram showing a first modification (an inner container with discontinuous projecting portions) of the inner container of the heat insulating container according to the embodiment of the present invention; FIG. 5 is a diagram showing a second modification (an inner container having a square opening) of the inner container of the heat insulating container according to the embodiment of the present invention;

A heat insulating container according to an embodiment of the present invention will be described with reference to the drawings. The insulated container includes an insulated container 100 as a first embodiment and an insulated container 200 as a second embodiment.

First, the heat insulating container 100 according to the first embodiment will be described. FIG. 1 shows a perspective view of an insulated container 100 according to an embodiment of the invention. 1A is a top perspective view of the heat insulating container 100, and FIG. 1B is a bottom perspective view of the heat insulating container 100. FIG. The heat-insulated container 100 is a double container and includes a cup-shaped inner container 102 and a cylindrical exterior body 103 . The insulated container 100 has an opening 111 opening upward and a bottom 112 . The exterior body 103 is easily attached to and detached from the inner container 102 .

FIG. 2 is a perspective view of the exterior body 103 of the heat insulating container 100 according to the embodiment of the invention. FIG. 2A is a view with the first open end 131 facing upward and the second open end 132 facing downward, and FIG. It is a figure which turned the open end 132 upwards.

The exterior body 103 is formed in a cylindrical truncated cone shape. Therefore, FIG. 2(A) shows a state in which the truncated surface of the truncated cone-shaped outer body 103 is turned downward, that is, an inverted truncated cone state, and FIG. 1 shows a state in which the truncated surface of the armor 103 is turned upward, that is, a state of a truncated cone shape.

The exterior body 103 is formed in a cylindrical shape, and has a first open end 131 corresponding to the bottom surface of a truncated cone as shown in FIG. It has a second open end 132 which rests on the truncated surface of the frusto-conical shape. Moreover, the exterior body 103 has a side peripheral surface 133 whose diameter decreases from the first open end 131 toward the second open end 132 .

The first open end 131 and the second open end 132 are in parallel planes in perpendicular relation to the centerline of the frustoconical shape. That is, the exterior body 103 has a truncated cone shape in which a regular cone is truncated parallel to the bottom surface. The first and second open ends 131, 132 are edges without being folded inward or outward.

The first and second open ends 131 and 132 are circular in shape, and the first open end 131 is larger than the second open end 132 . That is, the second opening end 132 has a shape similar to that of the first opening end 131 and has a small similarity ratio to the first opening end 131 . Thus, the exterior body 103 is formed in a truncated cone-shaped tubular shape in the present embodiment.

The side peripheral surface 133 uniformly decreases in diameter at a constant rate from the first open end 131 corresponding to the bottom surface of the truncated cone to the truncated surface. That is, the side peripheral surface 133 extends linearly (in an inverted V shape) so that the interval becomes narrower toward the bottom when viewed from the side. The side peripheral surface 133 may be subjected to printing on the outside or the inside, and may have characters, figures, or the like printed thereon.

FIG. 3 shows a developed view in which the exterior body 103 is developed. The exterior body 103 is formed by winding a sheet of paper material 103a in the shape of a fan. The paper material 103a is provided with a pair of laminated portions 103b that are overlapped and joined at both ends of the fan surface, and is formed into a truncated cone shape by joining the laminated portions 103b. The paper material 103a is easier to print than the plastic material. In the present embodiment, the first opening end and the second opening end are formed linearly, but the first opening end and the second opening end are supported by an inner container described later as an exterior body. For example, it may be formed in another shape such as a wavy shape.

FIG. 4 is a perspective view of the inner container 102 of the heat insulating container 100 according to the embodiment of the invention. 5 is a front view of the inner container 102, FIG. 6 is a plan view of the inner container 102, FIG. 7 is a bottom view of the inner container 102, and FIG. The rear view, right side view, and left side view are the same as the front view.

The inner container 102 is formed in the shape of a cup and has a circular opening 121 that opens upward and a bottom portion 122 that forms the bottom of the cup. Further, the inner container 102 includes a bulging portion 124 in the opening 121 , a protruding portion 125 in the bottom portion 122 , and a side wall portion 126 connecting the bulging portion 124 and the protruding portion 125 . The bulging portion 124 has a shape similar to that of the projecting portion 125 and has a large similarity ratio to the projecting portion 125 . Therefore, the side wall portion 126 is formed so as to decrease in diameter downward.

The inner container 102 has a bulging portion 124 that bulges in the circumferential direction to form a flange F, and further has an extension portion 127 that extends radially (peripherally) from the upper end of the bulging portion 124 . The extension portion 127 extends horizontally from the upper end of the bulging portion, then bends downward once and extends horizontally again. The extension part 127 is formed in an annular shape by extending in the circumferential direction.

In plan view, the bulging portion 124 has a shape similar to the first opening end 131 of the exterior body 103 at a virtual line 124I connecting the outermost ends in the radial direction, and has a slight similarity ratio to the first opening end 131. is formed so as to be as small as possible. In the present embodiment, the outer periphery of the flange F is formed in a perfect circle and coincides with a virtual line 124I connecting the outermost ends of the bulging portions 124 . The bulging portion 124 is formed in a rectangular shape when viewed from the side, and forms a step 128 on the lower side, which is the boundary with the side wall portion 126 . Side wall portion 126 tapers downward from step 128 .

Projection 125 has a shape similar to that of first opening end 131 and second opening end 132 of exterior body 103, and is similar to first opening end 131 and second opening end 132 of exterior body 103. On the other hand, the similitude ratio is small, and the similitude ratio is formed so as to be large with respect to the second open end 132 . The protruding portion 125 protrudes in the radial direction and protrudes in the circumferential direction to form the collar portion G. As shown in FIG.

In the present embodiment, the outer periphery of the collar portion G is formed in a perfect circle and coincides with a virtual line 125I connecting the outermost ends of the projecting portions 125 . That is, the outer periphery of the collar portion G is formed in a perfect circular ring having an outer edge smaller than the first open end 131 and smaller than the second open end 132 .

The projecting portion 125 is formed in a doglegged shape when viewed from the side, has an upper inclined portion 125a and a lower inclined portion 125b, and forms a constriction 129 at the boundary between the side wall portion 126 and the upper inclined portion 125a. do. Side wall portion 126 expands upward from constriction 129 . However, the projecting portion 125 may be formed, for example, in a U-shape when viewed from the side, having an upper horizontal portion and a lower horizontal portion, and bordering the side wall portion and the upper inclined portion. may be stepped.

The side wall portion 126 has a diameter that decreases downward as a whole, and has a shape that is substantially parallel to the side peripheral portion of the exterior body 103 . However, in detail, the upper approximately 1/4 of the side wall portion 126 becomes the first side wall portion 126a having a large diameter reduction ratio, and the lower approximately 3/4 of the side wall portion 126 becomes the diameter reduction ratio. It becomes the small second side wall portion 126b. The side wall portion 126 has substantially the same length dimension as the side peripheral portion of the exterior body 103 . The side wall portion 126 extends substantially linearly in a side view, and the first side wall portion 126a and the second side wall portion 126b linearly extend at different angles.

The opening 111 of the heat insulating container 100 corresponds to the opening 121 of the inner container 102, and the bottom 112 of the heat insulating container corresponds to the bottom 122 of the inner container 102, which will be described later.

The inner container 102 is formed by vacuum molding using crystalline plastic as a material. Crystalline plastics include crystalline polypropylene (PP), crystalline polyethylene terephthalate (PET), crystalline polylactic acid (PLA), and the like. Crystalline plastics are unsuitable for decoration and are prone to heat shrinkage. The inner container 102 generally undergoes primary shrinkage during vacuum molding and secondary shrinkage when filled with a high-temperature filler. Polylactic acid is easy to dispose of and is used as an eco-friendly material.

1, 9, and 10, the state in which the exterior body 103 is attached to the inner container 102 will be described. 9 shows an enlarged cross-sectional perspective view of the portion V in FIG. 1, and FIG. 10 shows an enlarged cross-sectional perspective view of the portion W in FIG. 1 in the heat insulating container 100 according to the embodiment of the present invention.

Insulated container 100 has exterior body 103 attached to inner vessel 102 so that side wall portion 126 of inner vessel 102 and side peripheral surface 133 of exterior body 103 are spaced apart, thereby forming a hollow structure. The heat insulating container 100 has a hollow structure, thereby enhancing the heat insulating effect.

The exterior body 103 is detachably supported by the inner container 102 . In this embodiment, after the exterior body 103 is formed in a cylindrical shape, it is attached by being fitted into the inner container 102 from below. The fitting operation is relative, and the inner container 102 may be fixed and the exterior body 103 may be fitted from below, or the exterior body 103 may be fixed and the inner vessel 102 may be fitted from above.

As shown in FIG. 9, the second open end 132 of the exterior body 103 is in contact with the inclined portion 125a on the upper side of the projecting portion 125, and the exterior body 103 is supported by the collar portion G from below. The inner container 102 may contract, but even in that case, it will come into contact with any position of the upper inclined portion 125a. Therefore, in the present embodiment, the protruding portion 125 functions as an exterior body supporting portion, and in particular, the upper inclined portion 125a functions as an exterior body supporting portion.

The vicinity of the inner side of the first open end 131 of the exterior body 103 is in contact with the lower corner 124a of the bulging portion 124, and the exterior body 103 is supported by the flange F. As shown in FIG. However, even if the outer shell 103 is not supported by the flange F, the second open end 132 is supported by the flange G so that the outer shell 103 is attached to the inner container 102 and maintained. For example, when the inner container 102 shrinks more than the design value, even if the vicinity of the inner side of the first open end 131 of the exterior body 103 does not contact the flange F, the second opening of the exterior body 103 As long as the end 32 is in contact with the flange G of the inner container 102, the hollow structure is maintained.

The exterior body 103 receives stress radially inward when the heat insulating container 100 is gripped by an operator. At this time, the exterior body 103 is supported in contact with the flange F and the collar portion G, and the heat insulating container 100 maintains its hollow structure unless the exterior body 103 is greatly deformed.

The exterior body 103 tends to move upward relative to the inner container 102 when the heat insulating container 100 is lifted by the worker holding the exterior body 103 . At this time, when the diameter-reduced side peripheral surface 133 of the exterior body 103 is in contact with the lower corner 124a of the inner container 102, the exterior body 103 is supported by the flange F, and the outer body 103 is supported upwardly and inwardly. , the hollow structure is maintained.

On the other hand, when the diameter-reduced side peripheral surface 133 of the exterior body 103 is not in contact with the lower corner 124 a of the bulging portion 124 of the inner container 102 , the first open end 131 of the exterior body 103 is positioned at the inner container 102 . The exterior body 103 moves upward relative to the inner container 102 until it contacts the extension portion 127 . As a result, the exterior body 103 is supported upward by the extending portion 127 and is supported inward by the lower corner 124a of the bulging portion 124, thereby maintaining a hollow structure. be.

When the outer casing 103 moves upward relative to the inner container 102, before the lower corner 124a of the bulging portion 124 contacts the inside of the first side peripheral surface 133, the first open end 131 It may contact the extension part 127 of the inner container 102 . At this time, the exterior body 103 receives upward stress, and the inner container 102 is supported by the exterior body 103 .

A method for manufacturing the heat insulating container 100 according to the embodiment of the present invention will be described with reference to FIG. 11 . FIG. 11 is a flow diagram of a method for manufacturing the heat insulating container 100. As shown in FIG.

First, the inner container 102 and the exterior body 103 described above are prepared (M-1). The inner container 102 is, for example, stored as a stack group in which many are stacked after vacuum forming, and is prepared by taking out one by one from the stack group. The outer package 103 is stored as a bundle in the state of the unfolded paper material 103a, and is formed into a truncated cone shape by taking out one sheet from the bundle and overlapping and pasting the bonded portions 103b. be prepared.

Next, the exterior body 103 is fitted from the bottom side of the inner container 102 . At this time, first, the first open end 31 of the outer package 103 moves over the flange G of the inner container 102 (M-2). The first open end 131 of the outer package 103 has a large similarity ratio to the flange G of the inner container 102, so it can pass through the flange G of the inner container 102 without obstruction.

Subsequently, the second open end 132 goes over the flange G of the inner container 102 (M-3). Since the second open end 132 of the exterior body 103 has a small similitude ratio with respect to the collar portion G of the inner container 102, at least one of the exterior body 103 and the inner container 102 is slightly deformed to form the second opening. The end 132 rides over the collar G. As a result, the exterior body 103 is fitted from the bottom side of the inner container 102 . In the present embodiment, the exterior body 103 is designed so that the second open end 132 is supported by the collar portion G of the inner container 102, and other portions do not interfere with fitting.

Next, the second open end 132 of the exterior body 103 contacts the upper side of the flange G (M-4). A force to move the exterior body 103 downward due to gravity acts, and the second open end 132 of the exterior body 103 that has passed over the flange G protrudes because the similarity ratio is small with respect to the flange G of the inner container 102. The upper inclined portion 125a of the portion 125 is contacted. As a result, the exterior body 103 is attached while being supported by the flange portion G of the inner container 102 .

As described above, the heat insulating container 100 is manufactured. At this time, since the side wall portion 126 of the inner container 102 and the side peripheral portion 133 of the exterior body 103 have substantially the same length dimension when viewed from the side, the first open end 131 of the exterior body 103 is located near the inner vessel 102 . is located near the bulging portion 124 of the . Moreover, the side wall portion 126 of the inner container 102 and the side peripheral surface 33 of the exterior body 103 are spaced apart, and the heat insulating container 100 has a hollow structure.

In the present embodiment, the heat-insulating container 100 is formed by attaching the outer casing 103 formed in a cylindrical shape to the inner container 102. After forming, the exterior body 3 may be attached to the inner container 102 .

Next, a method of using the heat insulating container 100 according to the embodiment of the present invention will be described with reference to FIG. 12 . FIG. 12 is a flow diagram of a method of using the insulated container 100. As shown in FIG.

First, the inner container 102 of the heat insulating container 100 is prepared (U-1). The inner containers 102 are stored as stack bundles in which many are stacked, and are prepared by taking out one by one from the bundle.

Next, the inner container 102 is filled with the filling (U-2). When this filling is at a high temperature, the inner container 102 undergoes secondary shrinkage.

The insulated container 100 is then sealed (U-3). The heat-insulated container 100 is sealed by bonding a lid (not shown) slightly larger than the opening 121 to the upper side of the bulging portion 24 of the inner container 102 while the container 100 is filled with the filling material.

Next, the exterior body 103 is attached to the inner container 102 filled with the high-temperature filling (U-4). Thus, the heat insulating container 100 is manufactured. This mounting is the same as the manufacturing method of the heat insulating container 100 described above.

The insulated container 100 is then stored (U-5). The insulated container 100 filled with the filling is stored as a commodity by being accumulated in a collecting container such as a cardboard box and stored in a warehouse, or by being distributed to the market and displayed in stores.

The insulated container 100 is then heated (U-6). The insulated container 100 is sold individually as a product and heated individually. For example, it is heated to around 100 degrees with a microwave oven or the like. At this time, the inner container 102 becomes hot due to the heating of the filling material, but the exterior body 103 does not receive direct heat transfer due to its hollow structure. Therefore, the heat insulating container 100 has a high heat insulating effect due to its hollow structure. Moreover, even if the worker tries to hold the heat insulating container 100, he or she will not suffer thermal damage such as burns.

The filling is then removed from the insulated container 100 (U-7). The insulated container 100 is, for example, taken out of the filling by eating the filling. The insulated container 100 from which the filling has been removed is emptied.

Next, the emptied heat insulation container 100 is separated into the inner container 102 and the exterior body 103 (U-8). The exterior body 103 is removed from the inner container 102 so as to move downward relatively. At this time, the second open end 132 of the outer casing 103 needs to climb over the flange G of the inner container 102, and at least one of the inner container 102 and the outer casing 103 is deformed by the operator's stress. The exterior body 103 is removed. At this time, the upper inclined portion 125a supporting the exterior body 103 guides the second open end 132 of the exterior body 103 in the outer peripheral direction, thereby facilitating removal of the exterior body 103. FIG.

The inner container 102 and outer package 103 are discarded (U-9). Since the inner container 102 and the outer package 103 are separated, they can be processed separately. Although the outer packaging 103 made of paper and the inner container 102 made of crystalline plastic are different in disposal process, they can be disposed of separately, thereby facilitating disposal.

In the present embodiment, the exterior body 103 is attached after the inner container 102 is filled with the filler, but the interior container 102 may be filled with the filler after the exterior body 3 is attached. However, since the paper packaging 103 may deteriorate due to moisture absorption or the like during the filling operation, it is better to perform the filling operation first.

Further, in the present embodiment, an example in which the insulated container 100 is sealed and stored has been described, but the insulated container 100 may be used in a procedure in which the contents are filled and taken out without being sealed. . Moreover, in the present embodiment, an example in which the content is heated while being filled is shown, but the heat-insulating container 100 may be directly filled with the high-temperature content.

Next, a heat insulating container 200 according to a second embodiment will be described. FIG. 13 shows a perspective view of an insulated container 200 according to an embodiment of the invention. 13A is a top perspective view of the heat insulating container 200, and FIG. 13B is a bottom perspective view of the heat insulating container 200. FIG. The heat-insulated container 200 is a double container and includes a cup-shaped inner container 202 and a cylindrical outer body 203 .

The insulated container 200 has an opening 211 opening upward and a bottom 212 . The exterior body 203 is easily attached to and detached from the inner container 202 . The exterior body 203 is formed in a cylindrical shape, has a first open end 231, a second open end 232, and a side peripheral surface 233, and is formed in a substantially truncated cone shape as shown in FIG. ing. That is, the exterior body 203 has the same configuration as the exterior body 103 of the first embodiment, although the size is different. Therefore, detailed description is omitted.

FIG. 14 is a perspective view of the inner container 202 of the heat insulating container 200 according to the embodiment of the invention. 15 is a front view of the inner container 202, FIG. 16 is a plan view of the inner container 202, FIG. 17 is a bottom view of the inner container 202, and FIG. 18 is a side sectional view. The rear view, right side view, and left side view are the same as the front view.

The inner container 202 is formed in the shape of a cup, and mainly includes a circular opening 221 that opens upward, a bottom portion 222 that forms the bottom of the cup, and a side wall portion 226 that connects the opening portion 221 and the bottom portion 222 . Prepare. Further, the inner container 202 has a bulging portion 224 in the opening 221 and a platform 225 on the bottom surface of the bottom portion 222 .

The bulging portion 224 of the inner container 202 has the same configuration as the bulging portion 124 of the first embodiment, and further includes an extension portion 227 extending radially (peripherally) from the upper end of the bulging portion 224 . have. The extension part 227 is formed in an annular shape by extending in the circumferential direction. The bulging portion 224 has a shape similar to that of the hill 225 and has a large similarity ratio to the hill 225 . Therefore, the side wall portion 226 is formed so as to decrease in diameter downward.

In the inner container 202, similarly to the inner container 102 of the first embodiment, the bulging portion 224 bulges in the circumferential direction to form a flange F, and the diameter (periphery) from the upper end of the bulging portion 224 increases. It has an extension portion 227 extending in the direction. The outwardly extending portion 227 extends horizontally from the upper end of the bulging portion. The extension part 227 is formed in an annular shape by extending in the circumferential direction.

In a plan view, the bulging portion 224 has a shape similar to the first opening end 231 of the exterior body 203 at a virtual line 224I connecting the outermost ends in the radial direction, and has a slight similarity ratio to the first opening end 231. is formed so as to be as small as possible. In the present embodiment, the outer periphery of the flange F is formed in a perfect circle and coincides with a virtual line 224I connecting the outermost ends of the bulging portions 224 . The bulging portion 224 is formed in a rectangular shape when viewed from the side, and forms a step 228 on the lower side, which is the boundary with the side wall portion 226 . Sidewall 226 tapers downward from step 228 .

In plan view, the plateau 225 has a shape similar to the first opening end 231 and the second opening end 232 of the exterior body 203 and a virtual line 225I connecting the outermost end in the radial direction corresponding to the lower end. The similarity ratio is small with respect to the end 231 and is formed so as to be large with respect to the second open end 232 .

The plateau 225 has an inclined portion 225a that is inclined so as to widen in the radial direction downward, and a constriction 229 is formed at the boundary between the side wall portion 226 and the inclined portion 225a. The plateau 225 expands downward from the constriction 229 .

The side wall portion 226 has a diameter that decreases downward as a whole, and has a shape that is substantially parallel to the side peripheral portion of the exterior body 203 . The side wall portion 226 has substantially the same length dimension as the side peripheral portion 233 of the exterior body 203 . As in the inner container 102 of the first embodiment, the side wall portion 226 has a first side wall portion and a second side wall portion in a side view, which extend substantially linearly at different angles. However, the side walls may simply extend straight.

The inner container 202 is formed by vacuum molding using crystalline plastic as a material, like the inner container 102 of the first embodiment.

13, 19, and 20, the state in which the exterior body 203 is attached to the inner container 202 will be described. 18 shows an enlarged side cross-sectional view of the portion V2 of FIG. 13, and FIG. 19 shows an enlarged side cross-sectional view of the portion W2 of FIG.

The heat-insulated container 200 has the inner container 202 mounted with the exterior body 203 so that the side wall portion 226 of the inner container 202 and the side peripheral surface 233 of the exterior body 203 are spaced apart, thereby forming a hollow structure. The heat insulating container 200 has a hollow structure, thereby enhancing the heat insulating effect.

The exterior body 203 is detachably supported by the inner container 202 . In this embodiment, after the exterior body 203 is formed in a cylindrical shape, it is attached by being fitted into the inner container 202 from below. The fitting work is relative, and the inner container 202 may be fixed and the exterior body 203 may be fitted from the bottom side, or the exterior body 203 may be fixed and the inner vessel 202 may be fitted from the top side.

As shown in FIG. 19, the second open end 232 of the exterior body 203 is in contact with the inclined portion 225a of the hill 225, and the exterior body 203 is supported by the hill 225 from below. The inner container 202 may contract, but even in that case, it will be in contact with any position from the constriction 229 to the inclined portion 225a. That is, the platform 225 functions as an exterior support.

The vicinity of the inner side of the first open end 231 of the exterior body 203 is in contact with the lower corner 224a of the bulging portion 224 of the inner container 202 in the same relationship as the heat insulating container 100 of the first embodiment. 203 is supported on flange F; However, even if the exterior body 203 is not supported by the flange F, the exterior body 203 is mounted and maintained on the inner container 202 as long as the second open end is supported by the plateau 225 . For example, when the inner container 202 shrinks more than the design value, even if the vicinity of the inner side of the first open end of the exterior body 203 does not contact the flange F, the second open end of the exterior body 203 is in contact with the platform 225 of the inner container 102, the hollow structure is maintained.

When the heat-insulating container 200 is gripped by an operator, the exterior body 103 may be subjected to radially inward stress. At this time, the exterior body 203 is supported in contact with the flange F and the plateau 225, and the heat insulating container 200 maintains its hollow structure unless the exterior body 203 is greatly deformed.

The outer body 203 tends to move upward relative to the inner container 202 when the heat insulating container 200 is horizontally held and lifted by an operator. At this time, when the diameter-reduced side peripheral surface 33 of the exterior body 203 is in contact with the lower corner 24a of the inner container 202, the exterior body 203 is supported by the flange F, and the outer body 203 is supported upwardly and inwardly. , the hollow structure is maintained.

On the other hand, when the diameter-reduced side peripheral surface 233 of the outer casing 103 is not in contact with the lower corner 224 a of the inner container 202 , the first open end 231 of the outer casing 203 is in contact with the extension portion 227 of the inner container 202 . , the exterior body 203 moves upward relative to the inner container 202. As a result, the exterior body 203 is supported upward by the extending portion 227 and is supported inward by the lower corner 224a of the bulging portion 224, thereby maintaining a hollow structure. be.

When the outer shell 203 moves upward relative to the inner container 202 , the first open end 231 contacts the inner side of the side peripheral surface 233 before the lower corner 224 a of the bulging portion 224 contacts the inner side of the inner container 202 . may touch the extension 227 of the vessel 202 . At this time, the exterior body 103 receives upward stress, and the inner container 202 is supported by the exterior body 203 .

Further, as shown in FIGS. 19 and 20, the inner container 203 is formed from one sheet material, and the opening 211, the side wall portion 226, and the like are formed by extending one sheet material in a single layer. However, the platform 225 is double formed by folding one sheet. Therefore, the platform 225 is stronger than the rest of the inner container. Here, one sheet includes a multi-layer sheet as well as a single-layer sheet.

The heat insulating container 200 according to the second embodiment of the present invention can be manufactured by the same method as the heat insulating container 100 according to the first embodiment, and can be used by the same method.

Next, a first modified example of the invention will be described with reference to FIG. 21 shows a perspective view of the inner container 12 according to the first modification, FIG. 21(A) is an upper perspective view of the inner container 12, and FIG. 21(B) is a lower perspective view of the inner container 12. It is a diagram.

The inner container 12 differs from the inner container 102 of the first embodiment in that the protruding portions 25 are not continuous in the circumferential direction, and otherwise has the same configuration.

The inner container 12 has a projecting portion 25 projecting radially. The protruding portions 25 are spaced apart in the circumferential direction and function as exterior body supporting portions. An imaginary line 25I connecting the outermost ends of the protruding portions 25 forms a perfect circle, and is similar in shape to the first open end 131 and the second open end 132 of the exterior body 103, and similar to the first open end 131. The ratio is small and the similarity ratio is large with respect to the second open end 132 .

Next, a second modification of the invention will be described with reference to FIG. 22 shows a perspective view of the inner container 22 according to the second modification, FIG. 22(A) is a top perspective view of the inner container 22, and FIG. 22(B) is a bottom perspective view of the inner container 22. It is a diagram.

The inner container 22 according to the second modification differs from the inner container 102 of the embodiment in that the opening is square and the overall shape is a substantially truncated square pyramid. The inner container 22 is formed in a cup shape having a square opening. An exterior body (not shown) is formed into a truncated square pyramid so that it can be easily attached to and detached from the inner container 22 .

The first and second modifications show modifications of the inner container 102 of the heat insulating container 100 according to the first embodiment. However, there is also a modification of the inner container 202 of the heat insulating container 200 according to the second embodiment. That is, the height 225 of the inner container 202 can be formed discontinuously in the circumferential direction, and the shape of the opening 221 of the inner container 202 can be a shape other than a circle such as a square.

The embodiment disclosed this time is an example and is not limited to this. The present invention is defined by the scope of the claims rather than the scope described above, and is intended to include all modifications within the scope and meaning equivalent to the scope of the claims.

The present invention can be used with insulated containers.

100, 200 Insulated containers 12, 22, 102, 202 Inner containers 121, 221 Openings 122, 222 Bottoms 124, 224 Swelling portions 124I, 224I Imaginary line 125 connecting the outer ends of the swelling portions Protruding portion (exterior body support portion )
125a Inclined portion 125I on the upper side of the projecting portion Virtual line 225 connecting the outer ends of the projecting portion Height (exterior body support portion)
225a sloped portion 225I of the hill phantom lines 126, 226 connecting the outer ends of the hill side walls 127, 227 extensions 128, 228 steps 129, 229 constrictions 103, 203 exterior body 103a paper materials 131, 231 first opening end 132, 232 second open ends 133, 233 side peripheral surface

Claims (14)

A heat-insulating container including a cup-shaped inner container and a tubular outer body that can be easily attached and detached around the inner container, wherein the outer body is formed in a substantially truncated cone shape. a first open end corresponding to the bottom surface of the shape; and a second opening corresponding to the truncated surface of the truncated cone and having a substantially similar shape to the first open end and having a smaller similitude ratio than the first open end. and a side peripheral surface whose diameter is reduced from the first open end toward the second open end, and the inner container includes an outer body support portion provided on the cup-shaped bottom portion that opens upward. and a side wall portion extending upward from the bottom portion. A heat-insulated container, wherein the outer container is attached to the inner container so that the outer container and the side wall are spaced from each other. In a plan view from above, the exterior body supporting portion has an imaginary line connecting the outermost ends that is substantially similar in shape to the first and second opening ends, is smaller than the first opening end, and is smaller than the first opening end. 2. The insulated container of claim 1, forming a projection projecting radially from said bottom such that it has a greater similitude ratio than the open end of the container. The inner container includes a foot provided on the bottom, the foot expands in diameter downward, and a virtual line connecting the outermost ends has a shape substantially similar to the first and second open ends, and the 2. The insulated container according to claim 1, wherein the similitude ratio is smaller than that of the first open end and larger than that of the second open end, and a portion of the plateau functions as the exterior support. 4. The insulated container according to claim 3, wherein said inner container is formed from a single sheet of material, and said platform is formed by folding said single sheet. The inner container further includes a bulging portion provided at a position corresponding to the first opening end of the exterior body in a state where the second opening end of the exterior body is in contact with the exterior body support portion. The insulated container according to any one of claims 1 to 4, wherein said bulging portion bulges out in substantially the same shape and in substantially the same similitude ratio as said first open end. The inner container includes an extension portion that further extends in the radial direction from the upper end of the bulging portion, and the extension end of the extension portion has a similar shape to the first opening end and is wider than the first opening end. The insulated container according to any one of claims 1 to 5, having a large homothetic ratio. The insulated container according to any one of claims 1 to 6, wherein the outer body is made of paper material and the inner container is made of crystalline plastic material. The insulated container according to any one of claims 1 to 7, wherein printing is applied to the outside of the side peripheral portion of the exterior body. The heat-insulated container according to any one of claims 1 to 8, wherein the exterior body supporting portion has an upwardly tapering inclined portion on the upper side, and the open end is in contact with the inclined portion. An insulated container according to any preceding claim, wherein the open end is circular. The insulated container according to any one of claims 1 to 10, wherein said open end is polygonal. A heat insulating container comprising a cup-shaped inner container that allows slight deformation in the circumferential direction, and a cylindrical exterior body that is easily attached and detached around the inner container and allows slight deformation in the circumferential direction, The exterior body is formed in a truncated cone shape, and is a cylindrical body with the truncated conical surface facing downward and the bottom surface facing upward. and a second open end having a similar shape to the first open end and having a similarity ratio smaller than that of the first open end and the first open end corresponding to the truncated conical surface a side peripheral surface whose diameter is reduced toward the second open end, and the inner container includes an exterior body supporting portion provided in the cup-shaped bottom portion that opens upward, and an exterior body support portion that extends upward from the bottom portion. and a side wall portion, wherein the imaginary line connecting the outermost ends of the exterior body supporting portion has a shape substantially similar to the first and second opening ends, is smaller than the first opening end, and has the second opening end. A method for forming an insulated container using an insulated container having a similitude ratio larger than that of an open end, wherein the first open end is passed from below the inner container, which is open upward, beyond the exterior body supporting portion. , then, slightly deforming the inner container or the exterior body to pass the second opening end beyond the exterior body support part; and moving the second opening end above the exterior body support part A method of making an insulated container, comprising: A cup-shaped inner container that allows slight deformation in the circumferential direction, is easily attached to and detached from the periphery, and is formed to be mountable with a cylindrical outer body that allows slight deformation in the circumferential direction, the outer body is a cylindrical body formed in the shape of a truncated cone with the truncated surface facing downward and the bottom surface facing upward, a first open end corresponding to the bottom surface of the truncated cone; A second open end, which corresponds to a truncated surface of the truncated cone, has a shape substantially similar to that of the first open end and has a similarity ratio smaller than that of the first open end, and a second opening from the first open end to the first open end. a side peripheral surface whose diameter is reduced toward the open end of 2, an exterior body support portion provided in the cup-shaped bottom portion that opens upward, and a side wall portion that extends upward from the bottom portion, The exterior support part has a shape substantially similar to the first and second opening ends, and has a similitude ratio smaller than the first opening end and larger than the second opening end. and the second open end is in contact with the upper side of the projecting portion when the exterior body is mounted, and the inner container is attached to the exterior such that there is a gap between the side peripheral portion and the side wall portion. An inner vessel of an insulated container characterized by supporting a body. A heat insulating container including a cup-shaped inner container and a cylindrical exterior body that is easily attachable and detachable around the inner container, wherein the exterior body is formed in a cylindrical, substantially inverted truncated cone shape, The inner container includes an outer body supporting portion provided in the cup-shaped bottom portion that opens upward, and a side wall portion that extends upward from the bottom portion. A heat insulating container, wherein the exterior body is supported at its lower end by the exterior body support portion, and is attached to the inner container such that the side peripheral portion and the side wall portion are spaced apart from each other.

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