Bag insulation

Abstract

To provide a bag insulating material that is easy to handle when not in use. [Solution] The bag insulation material 10 comprises a rectangular main plate portion 11 placed at the bottom of the bag body, and side plate portions 12, front plate portion 13, and rear plate portion 14 which are connected to the four sides of the main plate portion 11 by hinge portions H11-H14 and which deform between an open state in which the angle between the main plate portion 11 and the side plate portion 12 is a right angle, and a closed state in which the main plate portion 11 is closed, and when the two side plate portions 12, front plate portion 13, and rear plate portion 14 deform into the open state, the main plate portion 11 is the bottom and the bag is formed into a box shape which is open on the upper side, and the plate materials of the main plate portion 11, the side plate portion 12, the front plate portion 13, and the rear plate portion 14 have a metal thin film layer laminated on the side which will be the inside when formed into a box shape.

Description

[Technical field]

[0001] The present invention relates to a bag insulation material that is placed inside a bag body. [Background technology]

[0002] Conventionally, there has been a thermal insulator placed inside a bag to keep an object contained in the bag warm (for example, Patent Document 1). However, conventional heat insulating materials are inconvenient when not in use because they are bulky. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2012-188164 A Summary of the Invention [Problem to be solved by the invention]

[0004] An object of the present invention is to provide a bag insulation material that is easy to handle when not in use. [Means for solving the problem]

[0005] One embodiment of the present invention is, for example, a bag insulation material that is placed inside a bag body, and includes a square or rectangular main body plate portion that is placed at the bottom of the bag body, and four opening and closing plates that are connected to the four sides of the main body plate portion by hinge portions and that rotate at the hinge portions to transform between an open state in which the angle between the main body plate portion and the four opening and closing plates is a right angle, and a closed state in which the main body plate portion is closed relative to the main body plate portion, and when the four opening and closing plates transform into the open state, the main body plate portion is the bottom and the bag is formed into a box-like shape that is open on the upper side, and the plate material of the main body plate portion and the four opening and closing plates is formed from a plate material having insulating properties, and a metal thin film layer is laminated on the side that will be the inside when formed into a box shape. [Brief description of the drawings]

[0006] [Figure 1] FIG. 1 is a perspective view of a bag body 1 and a bag insulating material 10 according to a first embodiment. [Diagram 2] 1A and 1B are diagrams illustrating a bag insulating material 10 according to a first embodiment in an unfolded state and a folded state. [Diagram 3] FIG. 2 is a perspective view illustrating the layered structure of the three-layer air bubble board 50 of the first embodiment. [Figure 4] 13A and 13B are diagrams illustrating a bag insulating material 210 according to a second embodiment in an unfolded state and in a box state. [Diagram 5] FIG. 11 is a perspective view of a bag body 201 and a bag insulating material 210 according to a second embodiment. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0007] (Embodiment) Hereinafter, an example of an embodiment of the present invention will be described with reference to the drawings. (First embodiment) FIG. 1 is a perspective view of a bag body 1 and a bag insulating material 10 of the first embodiment. FIG. 2 is a diagram illustrating the insulating material for bags 10 of the first embodiment in an unfolded state and a folded state. FIG. 2(A) is a view of the insulating material for bags 10 in an expanded state as viewed from the upper side Z2. 2(B) to 2(D) are diagrams showing the insulating material for bags 10 in a folded state. FIG. 2(B) is a view of the bag insulation material 10 in the folded state as viewed from the upper side Z2. FIG. 2C is a cross-sectional view taken along line CC of FIG. FIG. 2(D) is a view of the insulating material for bags 10 in the folded state as viewed from the right side X2. FIG. 2(E) is a vertical cross-sectional view illustrating the structure of the hook 20. As shown in FIG. In the embodiments and drawings, the description will be given using an XYZ Cartesian coordinate system as appropriate. As shown in Fig. 1, this coordinate system represents the left-right direction X (left side X1, right side X2), the front-rear direction Y (front side Y1, rear side Y2), and the thickness direction Z (lower side Z1, upper side Z2) based on the main body plate part 11 of the bag insulation material 10.

[0008] As shown in Fig. 1, the bag insulation material 10 is used by being placed at the bottom inside the bag body 1. When the bag insulation material 10 is not in use, the worker can remove it from the bag body 1. The bag 1 is, for example, a carrier bag used by a worker when shopping. The bottom surface of the bag 1 is rectangular. As described below, the bag insulation material 10 can be transformed into a flat plate-like expanded state (the state shown in Figure 2(A)), a box-like state with an open top (the state shown in Figure 1), or a flat plate-like folded state (the states shown in Figures 2(B) to 2(D)) by opening and closing the plate portion.

[0009] The bag insulation material 10 can be formed by pressing a plate material or the like. The plate material has heat insulating properties. The details of the plate material will be described later. The bag insulation material 10 comprises a main body plate portion 11, two side plate portions 12, a front plate portion 13, a rear plate portion 14, and a hook 20. The main body plate 11, the two side plates 12, the front plate 13, and the rear plate 14 are rectangular (rectangular). The side plates 12, the front plate 13, and the rear plate 14 are rotatably (openably and closably) connected to the four sides of the main body plate 11 by hinges H12, H13, and H14. The front plate 13 and the rear plate 14 are one set (first plate set) of plate parts facing each other with the main body plate 11 in between, and the two side plates 12 are the other set (second plate set) of plate parts facing each other with the main body plate 11 in between. In the embodiment, the state in which the side plate portion 12, the front plate portion 13, and the rear plate portion 14 are opened 180 degrees relative to the main body plate portion 11 is referred to as the unfolded state, the state in which they are opened so that they form a right angle with the main body plate portion 11 is referred to as the open state, and the state in which they are closed so that they overlap the main body plate portion 11 is referred to as the closed state.

[0010] Each hinge portion is formed by two creases (indicated by two-dot chain lines as appropriate). The two creases are spaced apart to such an extent that the insulating material for bags 10 in the folded state becomes a plate, corresponding to the thickness of the plate portion itself and the thickness of the plate portions in the overlapping state.

[0011] 2(A), in the unfolded state, the main body plate portion 11 has a rectangular shape that is elongated in the left-right direction X. The outer shape of the main body plate portion 11 is just large enough to be accommodated in the rectangular bottom portion of the bag body 1.

[0012] In the unfolded state, the two side plates 12 are located on the left side X1 and the right side X2 of the main body plate 11, respectively. In the left-right direction X, the length of each side plate portion 12 is approximately half the length of the main plate portion 11. As shown in FIG. 2(C), in the folded state, the two side plate portions 12 are disposed at the same height without overlapping.

[0013] In the unfolded state, the front plate 13 and the rear plate 14 have substantially the same shape as the main body plate 11, that is, a rectangular shape that is elongated in the left-right direction X. The front plate 13 is located on the front side Y1 of the main body plate 11, and the rear plate 14 is located on the rear side Y2 of the main body plate 11. As shown in FIG. 2(C) etc., in the closed state, main body plate 11, front plate 13 and rear plate 14 are folded in three.

[0014] The hook 20 is a member that detachably connects the front plate 13 and the rear plate 14. The two are locked (i.e., connected) when the protrusion 22 is pressed into the hole 21, and the lock is released when the protrusion 22 is removed from the hole 21. The hook 20 may be, for example, a plastic fastener, also known as a plastic hook. 2(E), the hook 20 has a pair of holes 21 and protrusions 22. The holes 21 are provided in the front plate 13, and the protrusions 22 are provided in the rear plate 14. The holes 21 and the protrusions 22 are disposed in positions where they can be engaged with each other when the hook 20 is in the folded state.

[0015] (Transformation of the bag insulation material 10 from the unfolded state to the folded state) A worker (such as a user of the carrier bag and the insulating material for bags 10) may follow the procedure below when transforming the insulating material for bags 10 from the unfolded state to the folded state. (1) The two side plates 12 are rotated relative to the main body plate 11 so as to overlap with the upper side Z2 of the main body plate 11 (see arrow #12 in FIG. 2(A)). (2) The front plate portion 13 is rotated relative to the main plate portion 11 so as to overlap the upper sides Z2 of the two side plate portions 12 (see arrow #13 in FIG. 2(A)). (3) The rear plate portion 14 is rotated relative to the main body plate portion 11 so as to overlap the upper side Z2 of the front plate portion 13 (see arrow #14 in FIG. 2(A)). (4) Using the hooks 20, secure the front panel portion 13 and the rear panel portion 14 so that they do not open up (see FIG. 2(E)).

[0016] By the above operation, the bag insulation material 10 is deformed into a folded state (see Figs. 2(B) to 2(D)). When the bag insulation material 10 is in the folded state, the main plate portion 11, the two side plate portions 12, the front plate portion 13, and the rear plate portion 14 are arranged so as to overlap in this order from the lower side Z1 to the upper side Z2. In other words, the rear plate portion 14 and the front plate portion 13 are positioned above the two side plate portions 12 and are arranged so as to cover the two side plate portions 12. In addition, the rear plate portion 14 (one of the pair of opening and closing plate portions) is arranged so as to overlap directly on the front plate portion 13 (the other opening and closing plate portion).

[0017] When viewed from the upper side Z2, the outer shape of the insulating material for bags 10 in the folded state is substantially the same as the outer shape of the main body plate portion 11 alone, the outer shape of the front plate portion 13 alone, and the outer shape of the rear plate portion 14 alone. The insulating material for bags 10 in the folded state is also plate-shaped. Thus, the insulating material for bags 10 in the folded state is compact. The hooks 20 maintain the overlapping state between the front plate portion 13 and the rear plate portion 14, thereby enabling the bag insulation material 10 to be stably maintained in the folded state. The worker may place the folded bag insulation material 10 at the bottom of the bag body 1. In this case, the bag insulation material 10 can be used as the bottom plate of the bag body 1. When transforming the bag insulation material 10 from the folded state to the unfolded state, the worker need only follow the above steps in reverse.

[0018] (Transformation of the bag insulation material 10 from a folded state to a box state) When transforming the bag insulation material 10 from the unfolded state to the folded state, the worker need only unlock the hooks 20 and then rotate the front plate 13, the rear plate 14, and the two side plate portions 12 to the open state (at right angles with the main body plate portion 11). After that, the worker needs to place the bag insulation material 10 on the bottom of the bag body 1, as shown in FIG. The main body plate portion 11 is disposed at the bottom of the bag body 1, and therefore functions as a bottom plate. An object stored at the bottom of the bag body 1 is surrounded (in five directions excluding the upper side Z2) by the bag insulation material 10. This allows the bag insulation material 10 to insulate the object from the outside of the bag body 1, thereby keeping the object warm or cold.

[0019] When transforming the bag insulation material 10 from a box state to a folded state, the above steps can be carried out in reverse order. Although not described, the bag insulation material 10 can also be transformed between the box state and the deployed state.

[0020] (3-ply bubble board 50) FIG. 3 is a perspective view illustrating the layered structure of the three-layer air bubble board 50 of the first embodiment. To ensure the above-mentioned functions, the plate material of the bag insulation material 10 is a hollow resin plate made of resin. The hollow resin plate is lightweight and has excellent compression resistance. Therefore, the main body plate 11 can be used as the bottom plate of the bag body 1, and the two side plate portions 12, the front plate portion 13, and the rear plate portion 14 have sufficient strength not to bend when in the open state.

[0021] As shown in FIG. 3, in this embodiment, a three-layer air bubble board 50 on which a metal thin film layer 55 is formed is used as the hollow resin board. The three-layer bubble board 50 is made by laminating a back sheet 51, a cap sheet 52, and a liner sheet 53 in this order from top to bottom. These layers are joined together by heat welding or the like. These sheets are resin sheets such as polyolefin resins such as polypropylene and polyethylene, polystyrene resins such as polystyrene, polyester resins such as polyethylene terephthalate, and polyamide resins such as nylon. The thickness of each of these sheets corresponds to the strength, rigidity, etc. of the bag insulating material 10. The thickness of each of these sheets may be, for example, about 0.1 to 10 mm.

[0022] The back sheet 51 is laminated on the back sheet 51 to close the opening of a cap 52 a (described later) of the cap sheet 52 . A large number of caps 52a that bulge out in a hollow shape are formed on the cap sheet 52. When the cap sheet 52 is in a single body, the caps 52a are open on the upper side. The shape of the caps 52a is not limited to the cylindrical shape shown in Fig. 3, and may be, for example, a truncated pyramid shape, a truncated cone shape, or the like. The liner sheet 53 is laminated to the top of the cap 52 a that protrudes downward from the cap sheet 52 .

[0023] The metal thin film layer 55 is laminated on the upper surface of the back sheet 51. The upper surface of the back sheet 51 is the surface that becomes the inside (the valley side of the valley fold) when the sheet is opened and closed. In other words, the upper surface of the back sheet 51 is laminated on the surface that becomes the inside of the insulating material for bags 10 in a box shape. The metal thin film layer 55 is a thin film layer of a metal such as aluminum, etc. The metal thin film layer 55 can suppress the transfer of heat by reflecting heat (radiant heat). The metal thin film layer 55 may be a film in which a resin film such as polyethylene is laminated on a metal thin film. The metal thin film layer 55 can be joined to the back sheet 51 by, for example, heat welding the resin film to the back sheet 51. The metal thin film layer 55 may be formed, for example, by depositing a metal on a resin film instead of a metal foil, or may be formed by directly depositing a metal on the back sheet 51.

[0024] With the above configuration, the three-layer air bubble board 50 has heat insulation properties because air is sealed inside the caps 51a. In addition, when the bag insulation material 10 is in a box state, the metal thin film layer 55 is disposed on the inner bottom surface and the inner side surface of the box body. Therefore, the bag insulation material 10 can keep objects warm or cold.

[0025] As described above, the bag insulation material 10 can be transformed into a box shape and placed at the bottom of the bag body 1 to keep warm an object contained in the bag body 1. Furthermore, the bag insulation material 10 can be folded compactly when not in use, making it easy to handle. Furthermore, even if the bag 1 is made of a flexible material (paper, cloth, etc.), the shape is stable because the box-shaped bag insulation material 10 is placed at the bottom. Therefore, the bag 1 can stand on its own, making it easy to handle.

[0026] Second embodiment Next, a second embodiment of the present invention will be described. The bag insulating material 210 of the second embodiment is changed from the first embodiment only in the configuration of the front plate portion and the rear plate portion. In the following explanations and drawings, parts that perform the same functions as in the first embodiment described above will be given similar names as appropriate, and the same reference numerals or the same reference numerals at the end (last two digits) will be given as appropriate, and duplicate explanations will be omitted as appropriate.

[0027] FIG. 4 is a diagram illustrating the insulating material for bags 210 according to the second embodiment in an unfolded state and in a box state. FIG. 4(A) shows the bag insulation 210 in an unfolded state. FIG. 4(B) is a perspective view of the bag insulation material 210 in a box form. FIG. 5 is a perspective view of a bag body 201 and a bag insulating material 210 of the second embodiment.

[0028] As shown in FIG. 4(A), the bag insulation material 210 includes a front plate portion 213 and a rear plate portion 214. The front plate portion 213 includes a first plate portion 213a and a second plate portion 213b. The first plate portion 213a and the second plate portion 213b are each a rectangular plate portion that is elongated in the left-right direction X. The first plate portion 213a is rotatably connected to the main body plate portion 11 by a hinge portion H13 (first hinge portion). The second plate portion 213b is rotatably connected to the first plate portion 213a by a hinge portion H213 (second hinge portion).

[0029] The rear plate portion 214 includes a first plate portion 214a and a second plate portion 214b similar to the front plate portion 213. The first plate portion 214a is rotatably connected to the main body plate portion 11 by a hinge portion H14 (first hinge portion), and the second plate portion 214b is rotatably connected to the first plate portion 214a by a hinge portion H214 (second hinge portion). With the above-described configuration, the bag insulation material 210 can be transformed into a folded state (not shown) in the same manner as in the first embodiment.

[0030] As shown in FIG. 4(B), when transforming the bag insulation material 210 into a box shape, the worker rotates the two side plate portions 12 at the hinge portions H12 (see arrow #12 in FIG. 4), similar to the first embodiment. On the other hand, the worker places the second plate portion 213b of the rear plate portion 214 in the open position (a right angle with the first plate portion 213a) by rotating the second plate portion 213b at the hinge portion H213 without rotating the front plate portion 213 at the hinge portion H13 (see arrow #H213 in FIG. 4). Similarly, the worker places the second plate portion 214b of the rear plate portion 214 in the open position (see arrow #H214 in FIG. 4). As shown in FIG. 5, a box-shaped bag insulation material 210 can be disposed at the bottom of a bag body 201 to keep an object contained in the bag body 201 warm. The bottom of the bag insulation material 210 in a box state is formed by the main body plate 11, a first plate 213a of the front plate 213, and a first plate 214a of the rear plate 214. Therefore, the outer shape of the bottom of the bag body 201 is larger than the bottom of the bag body 1 of the first embodiment. Therefore, the opening area of ​​the bag body 201 of this embodiment is also larger than the bag body 1 of the first embodiment.

[0031] Here, as will be described in detail, the bag insulation material 210 can also be transformed into a box shape similar to that of the first embodiment. In other words, the bag insulation material 210 can be rotated at the hinge parts H13 and H14 without rotating the front plate part 213 and the rear plate part 214 at the hinge parts H213 and H214. In this case, the bag insulation material 210 can be disposed at the bottom of a bag body having a shape similar to that of the first embodiment.

[0032] In this way, the bag insulation material 210 of this embodiment can be transformed into a box shape of two different shapes, and can therefore be used for bags of two different shapes. In this embodiment, the front plate 213 and the rear plate 214 of one pair (first plate pair) facing each other across the main body plate 11 include the first plate and the second plate, but the present invention is not limited to this. The side plate 212 of the other pair (second plate pair) facing each other across the main body plate 11 may include the first plate and the second plate, or both pairs of plates (i.e., the two side plate portions 212, the front plate portion 213, and the rear plate portion 214) may include the first plate and the second plate.

[0033] Although the embodiment of the present invention has been described above, the present invention is not limited to the above-mentioned embodiment, and various modifications and changes are possible, such as the modified forms described below, which are also within the technical scope of the present invention. In addition, the effects described in the embodiment are merely a list of the most preferable effects resulting from the present invention, and the effects of the present invention are not limited to those described in the embodiment. Note that the configurations of the above-mentioned embodiment and the modified forms described below can be used only in part, or in appropriate combination, but detailed explanations will be omitted.

[0034] (Variations) (1) In the embodiment, the bag insulation material is in a box shape and the back film is disposed on the inside, but the present invention is not limited to this. The bag insulation material may be in a box shape and the liner sheet may be disposed on the inside by turning over the three-layer bubble board. In this embodiment, a metal thin film layer may be laminated on the liner sheet.

[0035] (2) In the above embodiment, the shape of the main body plate seen from above is rectangular, but is not limited thereto. The shape of the main body plate seen from above may be square.

[0036] (3) In the embodiment, the fastener is a hook, but is not limited to this. The fastener may be, for example, a hook and loop fastener, as long as it can maintain the bag insulation material in the folded state. [Explanation of symbols]

[0037] 1,201: Bag body 10,210: Insulation material for bags 11: Main body plate 12,212: Side plate part 13,213: Front plate part 14,214: Rear plate part 20: Hook 50:Three-layer bubble board 55: Metal thin film layer 213a, 214a: 1st plate part 213b, 214b: 2nd plate part H12, H13, H14, H213, H214: Hinge part

Claims

1. A bag insulation material to be placed inside a bag body, A square or rectangular main body plate portion disposed at the bottom of the bag body; four opening and closing plate sections that are connected to the four sides of the main body plate section by hinge sections and that rotate at the hinge sections to deform between an open state in which the angle formed with the main body plate section is a right angle and a closed state in which the main body plate section is closed; When the four opening and closing plate parts are deformed into an open state, the main body plate part is formed into a box shape that is open on the upper side, The plate materials of the main body plate portion and the four opening and closing plate portions are It is made of a plate material having thermal insulation properties, The box-shaped structure has a metal thin film layer laminated on the inner surface. A bag insulating material characterized by the above.

2. The four opening and closing plate portions are A first plate part set which is one set of opening and closing plate parts facing each other via the main body plate part; a second plate part set which is the other set of opening and closing plate parts facing each other via the main body plate part, The first plate assembly includes: In a closed state, one opening / closing plate portion and the other opening / closing plate portion are arranged to directly overlap each other, A fastener is provided on the one opening / closing plate portion and the other opening / closing plate portion, and the fastener maintains the one opening / closing plate portion and the other opening / closing plate portion in an overlapping state.

2. The insulating material for bags according to claim 1.

3. The four opening and closing plate portions are A first plate part set which is one set of opening and closing plate parts facing each other via the main body plate part; a second plate part set which is the other set of opening and closing plate parts facing each other via the main body plate part, At least one of the opening and closing plate portions of the first plate portion set and the second plate portion set is a first plate portion connected to the main body plate portion by a first hinge portion; a second plate portion connected to the first plate portion by a second hinge portion, The second plate portion is deformed between a state in which the angle formed with the first plate portion is 180 degrees and a state in which the angle formed with the first plate portion is a right angle by rotating at the second hinge portion.

2. The insulating material for bags according to claim 1.

4. The plate materials of the main body plate portion and the four opening and closing plate portions are A cap sheet having a number of caps that bulge out hollowly; a back sheet that is laminated on one side of the cap sheet and closes the opening of the cap; and a liner sheet laminated on the other surface side of the cap sheet.

4. The insulating material for bags according to claim 1.

Images