JP2988271B2 - Foldable blow molded bottle - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a foldable blow-molded bottle to be filled with a beverage such as milk or a liquid such as a liquid detergent. The present invention relates to a foldable blow-molded bottle that can be compactly folded over its entire axial direction when the bottle is discarded after discharging a material, and that can stably maintain a completely folded shape.

[0002]

2. Description of the Related Art Blow-molded plastic bottles have been widely used as containers for liquid detergents and various beverages. These types of plastic bottles are discarded after the contents are discharged.However, the shape of the bottles as they are has a large volume, which makes it difficult to collect waste efficiently. Has become a challenge. JP-A-3-148451 describes a container that allows the container to be reduced in size at the time of disposal, and the configuration is such that fold lines are formed on both sides and the bottom of the body, respectively, and each fold line is In the same plane.

[0003] It is recognized that this plastic bottle can be folded into a flat state, which is convenient when storing the bottle before filling the contents or disposing of the bottle after use. However, since the folding plastic bottle has a flat folded shape, there is a structural limitation that air easily enters the inside of the bottle due to the elastic return force of the bottle, and the completely folded shape is stably maintained. There is a problem that it is difficult to do.

[0004]

SUMMARY OF THE INVENTION It is an object of the present invention to provide a foldable blow-molded bottle which can be folded compactly along the entire axial direction of the bottle and can stably maintain a completely folded shape. .

[0005]

Means for Solving the Problems The present invention has been proposed to achieve the above object, and has the following constitution.

That is, according to the present invention, a torso formed in a hexagonal cylindrical body including a front plate and a back plate which are arranged in parallel with each other and overlap each other when folded, and viewed from the axial direction of the torso. A plate portion having a substantially rectangular shape, a first corner portion at one end in the axial direction of the body portion, and a triangular portion having each of a pair of vertexes located on the first corner side of the plate portion as a vertex; 180 at one end of the torso to the first corner
The second corner of the plate and the second corner of
From a plurality of side plates extending from one end of the trunk and a triangular part having each of a pair of vertices located at the corners as vertices and connecting the plate part and the pair of triangular parts to the trunk. A bottom portion having a side portion, and the other end portion in the axial direction of the body portion has the same configuration as the bottom portion, and has a plate portion, a pair of triangular portions, and a side portion, and the plate portion has a content passing portion. A shoulder formed with a mouth portion, and a foldable blow-molded bottle comprising: a side located on a substantially extended trajectory of one of the front plate and the back plate in the plate portion of the shoulder; and A first distance between a boundary surface between a shoulder and a torso; and a first distance between the first corner, the second corner, and the other end of the torso on the plate of the shoulder.
Intersecting lines formed by extending a virtual plane including each of the corners corresponding to the corners and the second corners, and the side plates of the side portions located on a substantially extended trajectory of one of the front plate and the back plate. And a second distance between the two sides is substantially the same, and between a side located on a substantially extended trajectory of one of the front plate and the back plate of the bottom plate portion and a boundary surface between the bottom portion and the trunk portion. A third distance between an intersection line formed by extending the virtual plane on the bottom plate portion and the side plate of the side portion located on a substantially extended trajectory of one of the front plate and the back plate. The fourth distance is substantially the same, and one of the front plate and the back plate has a trunk body circumferential length,
A fifth distance between one of the front plate and the back plate and the virtual plane is formed longer than the other trunk circumferential length, and a fifth distance between the other of the front plate and the rear plate and the virtual plane A foldable blow-molded bottle characterized by being formed longer than a sixth distance between:

Further, according to the present invention, the fold wherein the circumferential length of one of the front plate and the back plate in the circumferential direction is longer than the circumferential length of the other by the thickness of the trunk. A possible blow molded bottle is provided.

According to the present invention, the fifth distance between one of the front plate and the back plate and the virtual plane is equal to the distance between the other of the front plate and the back plate and the virtual plane. 6
A foldable blow-molded bottle is provided which is formed longer than the distance by the thickness of the body.

According to the present invention, the fifth distance is:
A foldable blow-molded bottle is provided that is shorter than the second distance and the fourth distance.

According to the present invention, the fifth distance is:
A foldable blow-molded bottle is provided that is shorter than the second distance and the fourth distance by the thickness of the body.

According to the present invention, the sixth distance is:
Between an intersection line formed by extending the imaginary plane on the plate portion of the shoulder portion and the side plate of the side portion located on the other approximately extended trajectory of the front plate and the back plate at the shoulder portion A seventh distance, between an intersection formed by extending the virtual plane on the bottom plate portion and the side plate of the side portion located on the other approximately extended trajectory of the front plate and the back plate A foldable blow molded bottle formed less than an eighth distance is provided.

According to the present invention, the second distance and the seventh distance are substantially the same, and the fourth distance and the eighth distance are substantially the same. A bottle is provided.

Further, according to the present invention, between the side of the plate portion of the shoulder portion located on the other approximately extended locus of the front plate and the back plate, and the boundary surface between the shoulder portion and the trunk portion. The seventh distance is formed to be shorter than the ninth distance, and a boundary surface between the bottom and the trunk located on the other substantially extended trajectory of the front plate and the rear plate in the bottom plate. The foldable blow-molded bottle is provided in which the eighth distance is shorter than the tenth distance.

Further, according to the present invention, each of a pair of side walls forming a part of the body portion by connecting one end in the body circumferential direction to each of both ends in the body circumferential direction in the front plate of the body portion. The other end of the torso in the circumferential direction of the torso, and one end of the torso in the circumferential direction of the torso in the back plate of the torso are connected to each of the two ends of the torso in the back plate. Foldable blow molding in which a connection portion with the other end in the body circumferential direction is curved along substantially the entire axial direction of the body to form a protrusion protruding to one side of the front plate and the back plate. A bottle is provided.

[0015]

According to a first aspect of the present invention, there is provided a foldable blow-molded bottle comprising: a body formed into a hexagonal cylindrical body including a front plate and a back plate which are superimposed upon folding; a square plate; A triangular portion, a plate portion, and a bottom portion having a side portion formed of a plurality of side plates connecting the pair of triangular portions to the body portion, and the other end portion in the axial direction of the body portion have the same configuration as the bottom portion. And a first distance between a side located on a substantially extended trajectory of one of the front plate and the back plate in the plate portion of the shoulder, and a boundary surface between the shoulder and the trunk. The second distance between the intersection formed by extending the virtual plane and the side plate located on the substantially extended trajectory of one of the front plate and the back plate is substantially the same.

Therefore, when the shoulder is folded along the boundary between the body and the shoulder to one side of the front plate and the back plate of the body, a folding line is formed at the first corner at one end of the body. The shoulder is folded through the part and the second corner, ie under high foldability. In this case, foldability can be further improved by forming a folding line passing through the first corner and the second corner in the bottle in advance. Further, in the foldable blow-molded bottle according to the first aspect, a portion between a side located on a substantially extended trajectory of one of the front plate and the back plate in the bottom plate portion, and a boundary surface between the bottom portion and the body portion. A fourth distance between a third distance, an intersection formed by extending the virtual plane on the bottom plate portion, and a side plate located on a substantially extended trajectory of one of the front plate and the back plate. Are substantially the same.

Therefore, when the bottom is folded along the boundary surface between the trunk and the bottom to one side of the front plate and the back plate of the trunk, the folding line forms a first corner at the other end of the trunk. And the state passing through the corner corresponding to the second corner,
The bottom folds under high foldability. in this case,
By forming a folding line passing through the corner corresponding to each of the first corner and the second corner at the other end of the body in advance in the bottle, the foldability can be further improved. Further, in the foldable blow-molded bottle according to the first aspect of the present invention, one of the front plate and the back plate is formed so that a circumferential length of one of the body portions is longer than a circumferential length of the other body portion. Therefore, the bottle body is curved so that one side of the front plate and the back plate is convex, and when the front plate and the back plate of the body are overlapped, the front plate and the back plate are prevented from floating. The front plate and the back plate adhere well. Therefore, folding of the bottle becomes compact. Further, as described above, the bottle body is curved so that one side of the front plate and the back plate is convex, and the front plate and the back plate of the body are overlapped. And folded into a substantially boat-like shape with the above-mentioned respective side walls of the trunk as peripheral walls. Therefore, unlike a conventional bottle in which the bottle is folded into a flat shape, air is prevented from entering the bottle with the elastic return of the bottle. Therefore, the folded shape of the bottle is stably maintained.

[0018] In the foldable blow-molded bottle according to the first aspect of the present invention, one of the front plate and the back plate is provided.
A fifth distance from the virtual plane is longer than a sixth distance between the other of the front plate and the rear plate and the virtual plane. Therefore, as described above, when the bottle is curved so as to be convex to one of the front plate side and the back plate side, and the front plate and the back plate of the body are overlapped, one end in the body circumferential direction is attached to the front plate. And a pair of side walls forming a part of the trunk, and a pair of side walls forming a part of the trunk having one end in the circumferential direction of the trunk integrated with the back plate. As described above, in the foldable blow-molded bottle according to the first aspect of the present invention, the dimensions of the body, bottom, and shoulder are defined as described above, so that the bottle can be folded compactly over the entire axial direction. Will be Needless to say, the bottle may be formed with a folding line for dividing the body, the shoulder, and the bottom in order to improve the folding of the bottle.

Further, in the foldable blow-molded bottle according to the second aspect of the present invention, the circumferential length of one of the front plate and the back plate in the body portion is greater than the thickness of the other body portion in the circumferential direction. It is formed long by the dimension. Therefore, as described above, when the bottle is bent by folding the bottle so as to be convex to one of the front side and the back side, and the front plate and the back plate of the body are overlapped, the front plate and the back plate are Are adhered to each other with a higher degree of adhesion.

Further, in the foldable blow-molded bottle according to the third aspect of the present invention, the fifth distance is formed longer than the sixth distance by the thickness of the body. Therefore,
As described above, when the bottle is curved so as to be convex to one side of the front side and the back side, and when the front plate and the back plate of the body are overlapped, the adhesion between the front plate and the back plate is increased. Of course, the pair of side walls, the one end of which is connected to the front plate in the circumferential direction of the trunk, and the pair of side walls, which are connected to one end of the trunk in the circumferential direction of the rear plate, are adhered with high adhesion.

Further, in the foldable blow-molded bottle according to the invention of claim 4, the fifth distance is formed shorter than the second distance and the fourth distance. Therefore, each of the shoulder and bottom side plates located on the substantially extended trajectory of one of the front plate and the back plate is closely adhered to one outer surface of the front plate and the back plate with a high degree of adhesion.

Further, in the foldable blow-molded bottle according to the fifth aspect of the present invention, the fifth distance is shorter than the second distance and the fourth distance by the thickness of the body. Therefore, each of the shoulder and bottom side plates located on the substantially extended trajectory of one of the front plate and the back plate is in close contact with one of the outer surfaces of the front plate and the back plate with a higher degree of adhesion.

In the foldable blow-molded bottle according to the sixth aspect of the present invention, the sixth distance is defined by an intersection formed by extending an imaginary plane on the plate portion of the shoulder portion and the intersection of the front plate and the back plate. A seventh distance between the side plate located on the other substantially extended trajectory, an intersection line formed by extending a virtual plane on the bottom plate, and the other approximately extension of the front plate and the rear plate; It is formed shorter than the eighth distance between the side plate located on the track and the side part. Therefore, a ninth distance between a side of the shoulder plate portion located on the other approximately extended trajectory of the front plate and the back plate, and a boundary surface between the shoulder portion and the trunk portion, and a bottom plate portion A large tenth distance between the side located on the other approximately extended locus of the front plate and the back plate and the boundary surface between the bottom portion and the trunk portion is secured.

In the foldable blow-molded bottle according to the present invention, the second distance and the seventh distance are substantially the same, and the fourth distance and the eighth distance are substantially the same. By doing so, the folded shape can be stably held.

Further, in the foldable blow-molded bottle according to the invention of claim 8, the seventh distance is formed shorter than the ninth distance, and the eighth distance is formed shorter than the tenth distance. I have. Therefore, a force acts on the front plate and the back plate such that the front plate and the back plate are pulled in opposite directions along the body axis direction, respectively. Thereby, the outer surface of the side plate located on the substantially extended trajectory of one of the front plate and the back plate in the shoulder portion and the one outer surface of the front plate and the back plate adhere with high adhesion. Further, the outer surface of the side plate located on the substantially extended trajectory of one of the front plate and the back plate at the bottom and one outer surface of the front plate and the back plate adhere with high adhesion.

In the foldable blow-molded bottle according to the ninth aspect of the present invention, one end in the body circumferential direction is connected to each of both ends in the body circumferential direction on the front plate of the body, and a part of the body is formed. The other end of the torso circumferential direction of each of the pair of side walls, and one end of the torso circumferential direction is connected to each of both ends of the torso circumferential direction on the back plate of the torso to form a part of the torso. The connecting portion of each of the pair of side walls and the other end in the trunk portion circumferential direction is curved along substantially the entire axial direction of the trunk portion so as to form a convex portion on one side of the front plate and the back plate. Therefore, as described above, when the bottle is curved so as to be convex to one of the front side and the back side, and the front plate and the back plate of the body are overlapped, one of the front plate and the back plate is moved to the other. Although approaching, a convex portion formed on one side of the front plate and the back plate formed at the boundary portion acts so as to facilitate the approach.

[0027]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of a foldable blow-molded bottle according to the present invention will be described below with reference to FIGS. As shown in FIGS. 2 and 5, a foldable blow-molded bottle (hereinafter, may be simply referred to as a bottle) 10 of the present invention includes a body 20, a bottom 30, and a shoulder 40. The body 20 is formed in a flat hexagonal tubular shape, as is clear from FIG. 4 showing a cross section taken along line AA in FIG. The body 20 includes a front plate 22, a back plate 24, and side walls 21, 23, 25, 26. Each of the front plate 22 (see FIG. 2) and the back plate 24 (see FIG. 5) is formed in a rectangular shape whose longitudinal direction is oriented in the axial direction of the bottle (the vertical direction in FIGS. 2 and 5). The bottles 10 are arranged in parallel and can be overlapped with each other when the bottle 10 is folded.

As shown in FIG. 2 and FIG.
1 and 23 each have one end in the body circumferential direction at the front plate 22.
As shown in FIGS. 4 and 5, each of the side walls 25 and 26 has one end in the torso circumferential direction in the torso circumferential direction of the back plate 24 as shown in FIGS. It is integral with the end. Then, as shown in FIG. 4, the other end of the side wall 21 and the other end of the side wall 25 are integrated, and the other end of the side wall 23 and the other end of the side wall 26 are integrated. Thus, the body 20 is formed in a flat hexagonal tubular shape as described above.

The body 20 has a boundary 27 between the side wall 21 and the side wall 25 and a boundary 29 between the side wall 23 and the side wall 26.
Are formed with convex portions 27A and 29A that are convex toward the front plate 22 side. Each of the protrusions 27A and 29A is formed over the entire body 20 in the axial direction as shown in FIGS. The body 20 configured as described above is similar to that of FIG.
As shown in the figure, the torso circumferential length L1 of the front plate 22 is set to be greater than the torso circumferential length of the back plate 24 in order to further enhance the adhesion between the back plate 24 and the front plate 22 when the bottle is folded as described later. It is formed so as to be longer than L2 by the thickness L3 of the trunk portion 20.

Further, in this embodiment, in order to enhance the foldability of the bottle 10, the distance L4 between the front plate 22 and the imaginary plane F indicated by the imaginary line is equal to the distance L5 between the back plate 24 and the imaginary plane F. It is formed longer than the thickness L3 of the body portion 20 than the body portion 20. In the above description, the virtual plane F corresponds to the third corner 2 shown in FIGS. 2 and 5 at one end of the body 20.
8A, the fourth corner 28B, and the first at the other end of the body 20.
It is a plane including the corner 28C and the second corner 28D.

As shown in a folded state in FIG. 7, the bottom portion 30 has a rectangular plate portion 32, a first corner portion 28C of the body portion 20, and a first corner portion 28C side of the plate portion 32. Is provided with a triangular portion 34 having each of the vertices 32A and 32B as vertices. In addition, the bottom 30 is located at the second corner 2
8D and a triangular portion 36 having vertexes 32C and 32D located on the second corner 28D side of the plate portion 32. Further, the bottom portion 30 includes a rectangular side plate 31 located on the same plane as the front plate 22 below the front plate 22 in FIG. Side plates 33 and 35 are provided.
Each of the side plates 33 and 35 is formed on substantially the same plane as each of the side walls 21 and 23 of the trunk portion 20 and is formed integrally with each of the side walls 21 and 23.

Further, the bottom portion 30 has a side plate 37 which is located substantially flush with the back plate 24 below the back plate 24 in FIG. 5, and is integrated with the back plate 24. FIG. 5 Triangular side plates 38, 3
9 are provided. Each of the side plates 38 and 39 is formed on substantially the same plane as the side walls 26 and 25 of the body 20 and is integrated with each of the side walls 26 and 25.

The shoulder portion 40 is provided on the other end of the body portion 20 in the axial direction in the same configuration as the bottom portion 30.
The plate portion 42, the triangular portions 44, 46 shown in FIG. 1, the side plates 41, 43, 49A shown in FIG. 2, the side plates 45, 47 shown in FIG.
49B. As shown in FIG. 1 and FIG.
The bottom portion 30 is different from the bottom portion 30 in that an opening 42A for passing the contents is formed in the plate portion 42 of the zero. In the present embodiment, as shown in FIGS. 2 and 5, it is formed to be slightly curved so as to project upward in FIGS. 2 and 5, but it may be formed flat without being curved. Good.

Further, in this embodiment, a folding line is formed in order to further improve the foldability of the bottle 10. That is, as shown in FIG.
0 is the vertex 41A of the plate portion 42, and the other end is the bottom 3
A line 50 extending substantially linearly as the vertex 32A of the zero plate portion 32, a line 52 extending substantially linearly with one end being the vertex 41B of the plate portion 42 and the other end being the vertex 32C of the plate portion 32 is formed. I have. The third corner 2 of the body 20
A line 54 is formed starting from 8A and extending along the front plate 22 side in the trunk circumferential direction and ending at the fourth corner 28B of the trunk 20. Also, the first corner 2 of the body 20
Starting from 8C, a line 56 is formed extending from the front plate 22 side along the trunk circumferential direction and ending at the second corner 28D of the trunk 20.

Further, as shown in FIG.
0 is the vertex 41D of the plate portion 42 and the other end is the bottom 3
A line 58 extending substantially linearly is formed as the vertex 32B of the plate portion 32 at 0. In addition, a line 60 extending substantially linearly is formed such that one end is a vertex 41C of the plate portion 42 in the shoulder portion 40 and the other end is a vertex 32D of the plate portion 32 in the bottom portion 30. Each of the lines 50 to 60 is preferably formed as a rib protruding outward from the bottle 10. However, if the function as a folding line can be exhibited and the strength of the bottle 10 can be ensured, the lines 50 to 60 can be formed. The shape, thickness, and the like of are not limited.

In the foldable blow-molded bottle 10 constructed as described above, over the entire axial direction,
The dimensions are set as follows so that it can be folded compactly. That is, as shown in FIG.
The distance L6 between the side 70 of the plate portion 42 located on the substantially extended trajectory of the front plate 22 and the boundary surface between the shoulder portion 40 and the trunk portion 20, and the virtual plane F on the plate portion 42 of the shoulder portion 40 And a side plate 4 shown in FIG. 2 of a side portion located on a substantially extended trajectory of one of the front plates 22 at the shoulder portion 40.
The distance L7 (see FIG. 1) between the first lens 9A and the second lens 9A is substantially the same. In addition, a distance L8 between a side 72 shown in FIG. 2 which is located on a substantially extended locus of the front plate 22 in the plate portion 32 of the bottom portion 30, a boundary L8 between the bottom portion 30 and the trunk portion 20, and a plate of the bottom portion 30 The distance between the intersection line 82 shown in FIG. 7 formed by extending the imaginary plane F to the portion 32 and the side plate 31 shown in FIG. L9
(See FIGS. 3 and 7) are substantially the same. further,
The distance L4 shown in FIGS. 3 and 4 is formed shorter than the distance L7 and the distance L9 shown in FIG. 3 by the thickness L3 of the trunk 20.

The distance L5 shown in FIGS. 3 and 4 corresponds to the intersection line formed by extending the imaginary plane F on the plate portion 42 of the shoulder portion 40 and the substantially extended trajectory of the front plate 22 at the shoulder portion 40. L10 between the side portion 49B shown in FIG.
(See FIG. 1 and FIG. 3), and an intersection line 82 shown in FIG. 7 and a side plate shown in FIGS. 3 and 5 of a side portion located on the other approximately extended locus of the front plate 22 and the back plate 24 at the bottom 30. 37
Are formed shorter than the distance L11 between them (see FIGS. 3 and 7). Therefore, the side 7 shown in FIG. 5 located on the substantially extended locus of the back plate 24 in the plate portion 42 of the shoulder portion 40
4 and the distance L1 between the shoulder 40 and the interface between the torso 20
2, and a large distance L13 between the side 76 shown in FIG. 5 located on the substantially extended locus of the back plate 24 in the plate portion 32 of the bottom portion 30 and the boundary surface between the bottom portion 30 and the trunk portion 20 is ensured. You.

Further, the distance L7 and the distance L1 shown in FIG.
0 is substantially the same, and the distance L9 and the distance L11 are substantially the same. Further, the distance L10 is formed shorter than the distance L12, and the distance L11 is formed shorter than the distance L13.

The bottle 10 is formed as described above.
Examples of the plastic constituting the bottle 10 include low-density, medium-density, or high-density polyethylene,
Polyolefins such as crystalline polypropylene, crystalline propylene-ethylene copolymer, crystalline polybutene, crystalline poly-4-methylpentene-1, and laminates thereof;
Aromatic vinyl polymers such as polystyrene and styrene-butadiene copolymer; halogenated vinyl polymers such as polyvinyl chloride and vinylidene chloride resin; nitrile weight such as acrylonitrile-styrene copolymer and acrylonitrile-styrene-butadiene copolymer Polyesters such as polyethylene terephthalate and polytetramethylene terephthalate; polyamides such as nylon 6, nylon 6,6; various polycarbonates; thermoplastic resins such as polyacetals such as polyoxymethylene; Of these, soft ones are preferably used, and they can also be used as a laminate having the above resin as a layer component.

The above-described bottle is manufactured by any blow molding method such as direct blow, injection blow, two-stage blow, and stretch blow, but it is preferable to use the direct blow method. That is, for example, a molten plastic parison is extruded into a blow mold having a cavity surface corresponding to the bottle,
A pressurized fluid is blown into the parison. The expanded parison is cooled on the mold surface, resulting in a foldable blow molded bottle.

When the foldable blow-molded bottle 10 configured as described above is folded, the bottle 10 is curved so that the front plate 22 is convex. This allows
The rear plate 24 approaches the front plate 22 side, but the boundary 2
The projections 27A and 29A of the first and second plates 29 and 29 act so that the rear plate 24 approaches the front plate 22 smoothly. Therefore,
The front plate 22 can be easily brought into close contact with the rear plate 24 (see FIG. 9).

As described above, the distance L6 and the distance L7
Are substantially the same, when the shoulder portion 40 is folded toward the front plate 22 side of the body portion 20 along the boundary surface between the body portion 20 and the shoulder portion 40, the shoulder portion 40 is folded along the folding line 54. Part 4
Since 0 is folded, the shoulder 40 is smoothly folded. Further, as described above, since the distance L8 and the distance L9 are substantially the same, when the bottom 30 is folded toward the front plate 22 side of the body 20 along the boundary surface between the body 20 and the bottom 30. The bottom 30 along the folding line 56
Is folded. Therefore, the bottom 3 is smoothly folded (see FIGS. 8 and 9).

As described above, the distance L4 is equal to the distance L7.
And the length L3 of the body 20 is shorter than the distance L9, so that each of the side plate 49A and the side plate 31
It is adhered to the outer surface of the front plate 22 with a high degree of adhesion. Further, as described above, since the distance L10 is formed shorter than the distance L12 and the distance L11 is formed shorter than the distance L13, the front plate 22 and the rear plate 24 are each folded when folded. Forces such that the pulling force acts in the opposite directions along the axial direction of the part (X direction in FIG. 11) act, and the side plate 49A of the shoulder part 40 and the outer surface of the front plate 22 come into close contact with a high degree of adhesion. Side plate 31 of bottom 30 and front plate 2
2 adheres to the outer surface with a high degree of adhesion.

In this embodiment, the dimensions of the body 20, the bottom 30, and the shoulder 40 are set as described above.
As shown in FIG. 11, the bottle 10 can be folded compactly over the entire axial direction.
Further, in the present embodiment, since the dimensions of each part are set as described above, the bottle body 20 is curved so that the front plate 22 side is convex, and the front plate 22 and the back plate of the body 20 are curved. 24, the bottle 10 is placed on the front plate 22.
And the back plate 24 as a bottom, and the respective side walls 2 of the body 20
1, 25 and the side walls 23, 26 are folded into a substantially boat-like shape having peripheral walls (see FIG. 10). Therefore, bottle 1
As the elasticity returns to zero, air is prevented from entering the bottle 10, and the folded shape of the bottle 10 is stably maintained.

Further, in this embodiment, the angle Y (see FIG. 2) formed between each of the triangular portions 44 and 46 of the shoulder portion 40 and the plate portion 42, each of the triangular upper portions 34 and 36 of the bottom portion 30, Part 3
2, the angle Y (see FIG. 2) is
As shown in FIG. 6, the force is expanded at an angle Y ′, whereby a force for returning in the direction of arrow Z in FIG. 6 (a force for reducing the angle Y ′) acts. Therefore, in the present embodiment, the bottle 10 is folded in a boat shape as shown in FIG. 9 with a relatively small force. In the folded state, a force acts in the Z ′ direction in FIG. 10 has an effect that it is difficult to return to the state before folding.

[0046]

As described above, according to the foldable blow-molded bottle according to the present invention, the bottle can be folded compactly over the entire axial direction of the bottle, and the completely folded shape can be stably maintained. The resulting foldable blow molded bottle can be provided.

[Brief description of the drawings]

FIG. 1 is a plan view of a foldable blow molded bottle according to the present invention.

FIG. 2 is a front view of FIG.

FIG. 3 is a right side view of FIG. 1;

FIG. 4 is a cross-sectional view taken along line AA of FIG. 2;

FIG. 5 is a rear view of FIG. 1;

FIG. 6 is a view of the foldable blow-molded bottle according to the present invention in the folded state as viewed from the shoulder side in the body axis direction.

FIG. 7 is a front view of the foldable blow-molded bottle according to the present invention in a folded state.

FIG. 8 is a right side view of FIG. 7;

FIG. 9 is a sectional view taken along line BB of FIG. 7;

FIG. 10 is a rear view of the foldable blow molded bottle according to the present invention in a folded state.

FIG. 11 is a view taken along line CC in FIG. 7;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Foldable blow-molded bottle 20 Body 22 Front plate 24 Back plate 27 Boundary part 28A Third corner part 28B Fourth corner part 28C First corner part 28D Second corner part 29 Boundary part 30 Bottom part 31 Side plate 32 Plate part 32A Apex 32B apex 32C apex 32D apex 33 side plate 34 triangular portion 35 side plate 36 triangular portion 37 side plate 38 side plate 39 side plate 40 shoulder portion 41 side plate 41A vertex 41B vertex 41C vertex 41D vertex 42 plate portion 42A side 43 45 Side plate 46 Triangular portion 47 Side plate 49A Side plate 49B Side plate F Virtual plane Ll Body circumferential length of front plate L2 Body circumferential length of back plate L4 Fifth distance L5 Sixth distance L6 First distance L7 Second distance Distance L8 Third distance L9 Fourth distance L10 Seventh distance L11 Eighth distance L12 Ninth distance L13 Tenth distance Separation

Continuation of the front page (58) Field surveyed (Int.Cl. ⁶ , DB name) B65D 1/00-1/02 B65D 6/00-6/18 B65D 21/08 B65F 1/10

Claims (9)

(57) [Claims] 1. A torso formed in a hexagonal tubular body including a front plate and a back plate which are arranged in parallel with each other and overlapped with each other at the time of folding, and wherein the shape of the torso when viewed from the axial direction is substantially square. Plate part,
A first corner portion at one end in the axial direction of the body portion, a triangular portion having a pair of vertexes located on the first corner side of the plate portion as vertices, and a triangular portion at one end portion of the body portion. A second corner portion facing the one corner portion at a center angle of 180 degrees, a triangular portion having a pair of vertexes located on the second corner side of the plate portion as vertices, A bottom portion extending from one end portion and comprising a plurality of side plates connecting the plate portion and the pair of triangular portions to the body portion; and a bottom portion at the other axial end of the body portion. A foldable blow-molded bottle having a similar configuration, having a plate portion, a pair of triangular portions, and a side portion, and a shoulder portion formed with a mouth portion for passing contents on the plate portion. A side located on a substantially extended trajectory of one of the front plate and the back plate in the plate portion of the shoulder, and the shoulder and the torso A first distance between the first corner portion, the second corner portion, and the other end portion of the body portion at the first corner and the second corner at the plate portion of the shoulder portion. Between an intersection line formed by extending an imaginary plane including each of the corresponding corners and the side plate of the side portion located on a substantially extended trajectory of one of the front plate and the back plate at the shoulder portion A second distance is substantially the same, and a second distance between a side located on a substantially extended trajectory of one of the front plate and the back plate in the bottom plate portion, and a boundary surface between the bottom portion and the trunk portion 3 distances, an intersection line formed by extending the imaginary plane on the bottom plate portion, and a side plate of the side portion located on a substantially extended trajectory of one of the front plate and the back plate at the bottom portion. The fourth distance between them is substantially the same, and the length of one of the front plate and the rear plate in the circumferential direction is equal to the length of the other of the circumferential portions in the circumferential direction. And a fifth distance between one of the front plate and the back plate and the virtual plane is a sixth distance between the other of the front plate and the back plate and the virtual plane. A foldable blow-molded bottle formed longer than the bottle. 2. The foldable structure according to claim 1, wherein one of the front plate and the back plate is formed such that a circumferential length of one of the body portions is longer than a circumferential length of the other body portion by a thickness of the body portion. Blow molded bottle. 3. A torso portion wherein a fifth distance between one of the front plate and the rear plate and the virtual plane is larger than a sixth distance between the other of the front plate and the rear plate and the virtual plane. The foldable blow-molded bottle according to claim 1, wherein the foldable blow-molded bottle is formed to be longer by the wall thickness dimension. 4. The foldable blow-molded bottle according to claim 1, wherein the fifth distance is shorter than the second distance and the fourth distance. 5. The foldable blow according to claim 1, wherein the fifth distance is shorter than the second distance and the fourth distance by a thickness of a body. Molded bottle. 6. The sixth distance is defined by a line of intersection formed by extending the imaginary plane on the plate portion of the shoulder portion and a substantially extended trajectory of the front plate and the back plate at the shoulder portion. A seventh distance between the side plate located on the side portion, an intersection line formed by extending the virtual plane on the plate portion on the bottom portion, and substantially the other extension of the front plate and the back plate on the bottom portion; The foldable blow-molded bottle according to any one of claims 1 to 5, wherein the foldable blow-molded bottle is formed to be shorter than an eighth distance between the side plate located on the track and the side plate. 7. The apparatus according to claim 1, wherein the second distance and the seventh distance are substantially the same, and the fourth distance and the eighth distance are substantially the same. Foldable blow molded bottle. 8. A ninth distance between a side of the plate portion of the shoulder located on the other approximately extended trajectory of the front plate and the back plate, and a boundary surface between the shoulder and the torso. The seventh distance is formed short, and between the side located on the other approximately extended trajectory of the front plate and the back plate in the bottom plate, and the boundary surface between the bottom and the trunk The foldable blow-molded bottle according to any one of claims 1 to 7, wherein the eighth distance is shorter than the tenth distance. 9. A torso circumferential direction of each of a pair of side walls forming a part of the torso, with one end of the torso circumferential direction being connected to each of both ends of the torso circumferential direction in the front plate of the torso. An end portion and one end portion in the trunk portion circumferential direction on the back plate of the trunk portion, and one end portion in the trunk portion circumferential direction is connected to each of the two end portions in the trunk portion circumferential direction. 9. The connecting portion with the portion is curved along substantially the entire axial direction of the trunk portion so as to form a convex portion protruding on one side of the front plate and the back plate. 10. Foldable blow molded bottle.