JP2012076794A - Container - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a container the self-standing stability of which is prevented from reducing caused by volume reduction and which has excellent handling convenience.SOLUTION: A container body 1 formed by using a film has a body part 3 constituted by five or more surface-shaped parts 18, each of the surface-shaped parts 18 is extended from an upper part of the container body 1 to a lower part of the container body 1 and a rib 9 is provided in a boundary between at least two adjacent surface-shaped parts 18 of all the surface-shaped parts 18.

Description

  The present invention relates to a container suitable for use, for example, for storing liquids such as beverages and liquid detergents and solids such as powders.

  As a conventional container (pouch container), there is one in which a body portion is configured by a front film, a back film, and gusset-shaped side films provided on both left and right sides (see, for example, Patent Document 1).

  Since this container can be folded by the left and right gussets, it can be handled in a compact manner when transported in an empty state in which the contents are not filled or discarded after the contents are consumed.

JP 2007-15708 A

  However, in the above conventional container, with the derivation of the filled contents, the volume is reduced so that the left and right gussets are folded inward and the body becomes flat, and the volume of the container is reduced. If the body portion that has become flat after a certain degree of progress is bent suddenly from around its central portion, the self-supporting stability of the container is suddenly impaired, and the contents may spill.

  The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a container that can prevent a reduction in self-supporting stability due to volume reduction and is excellent in handling convenience.

  In order to achieve the above object, a container according to the present invention has a container main body formed of a film having a body part constituted by five or more planar parts, and each planar part is formed of the container body. A rib extends from the upper part to the lower part of the container body, and at the boundary between at least two adjacent planar parts of all the planar parts (Claim 1).

  In the container, when the body portion is folded, the other planar portions other than the planar portions located on the foremost surface and the rearmost surface of the body portion are folded inward when the body portion is folded. It may have a part (Claim 2).

  In the above container, a bottom structure in which a bottom constituent portion extending from a peripheral portion of the bottom portion of the container main body toward a central portion of the bottom portion is connected to a lower portion of each planar portion, and is connected to the adjacent planar portion. The parts may be joined together (claim 3).

  The said container WHEREIN: The center part of the said bottom part may be obstruct | occluded by the obstruction | occlusion member formed separately from the said bottom structural part (Claim 4).

  The said container WHEREIN: As the said planar part, the 1st planar part by which the bottom structural part which comprises the bottom part of the said container main body was provided continuously, and the 2nd planar part by which the said bottom structural part is not provided continuously And the second planar portion may be joined to the bottom component of the first planar portion (Claim 5).

  In the container, the bottom of the container main body may be constituted by a single sheet-like member, and the planar portion may be continuously provided on the periphery of the sheet-like member (Claim 6).

  In the above container, the bottom portion of the container body is constituted by a single sheet-like member having a margin for sealing at the periphery, and the seal margin that is sealed with the seal margin at the periphery of the sheet-like member is the planar shape. Provided on the lower side of the portion, and continuously provided through a seal margin provided on each of the sheet-like members at the periphery of the sheet-like member. It may be connected to the portion (claim 7).

  In the above container, the body portion of the container body is configured by six surface portions, and two pairs of surface portions facing each other out of the six surface portions are respectively inwardly folded when the body portion is folded. You may have a gusset part folded in (Claim 8).

  The container includes a mouth member to be attached to the container body, and the mouth member is connected to the tubular portion that passes through an opening provided in an upper portion of the container body, and is connected to the tubular portion. And a peripheral portion of the opening in the container main body may be joined to the upper surface or the lower surface of the protrusion (Claim 9).

  The said container WHEREIN: The peripheral part of the said opening may be joined to the said protrusion part via the cyclic | annular member provided so that the base end of the said cylindrical part might be enclosed by the sheet form (Claim 10).

  In the inventions according to claims 1 to 10, it is possible to prevent a decrease in self-supporting stability due to volume reduction, and a container excellent in terms of handling convenience can be obtained.

  That is, in the container of the invention according to claims 1 to 10, when the barrel is folded, the barrel is folded into the other planar portions excluding the two planar portions located at the forefront and rearmost portions of the barrel. It is possible to provide a gusset portion that is folded inward when being folded. And in the container of the present invention, as the filled contents are led out, the volume is reduced so that the gusset part in the stretched state is folded inward and the trunk part becomes flat, but the volume reduction of the container It is effective by a gusset part that can be formed so that at least one of the left and right sides of the torso bends at the center of the torso when the torso is flattened at a stage where a certain degree of progress has occurred. To be prevented. This is because if the direction of two or more gusset parts arranged in at least one of the left and right sides of the body part is not parallel to each other, it will be bent to one of two or more gusset parts arranged side by side. This is because even if the force to act is applied, the force to resist the force acts on the other gusset portions.

  Therefore, the container of the present invention is less likely to bend even if the volume is reduced and the body portion approaches flat, and the self-supporting stability and convenience of handling are improved accordingly, and this effect is formed at the boundary between adjacent planar portions. Further improvement is achieved by the seal rib.

  In the container of the invention according to claim 4, the seal rib can be prevented from concentrating at the center of the bottom, and the self-supporting stability is greatly improved.

  In the container of the invention according to claim 5, the number of seal ribs formed on the bottom portion is larger than that in the case where the bottom constituent portion extending from the peripheral portion of the bottom portion toward the center portion is provided continuously to the lower portion of each planar portion. As a result, the concentration of the seal rib in the central portion of the bottom portion is reduced, so that it is possible to improve the self-supporting stability.

  In the container according to the sixth and seventh aspects of the present invention, the seal rib protruding to the lower surface side of the bottom portion can be completely eliminated, and the bottom portion can be configured to be stretched so as to have a shape close to flat. Therefore, it is possible to easily improve the self-supporting stability and increase the filling capacity.

  In the container according to the ninth and tenth aspects of the invention, the container body can have a three-dimensional shoulder by joining the protruding part of the mouth member and the peripheral part of the opening of the container body. In addition to being able to easily increase the capacity, it is possible to arrange multiple containers without gaps between containers, as with ordinary PET bottles, etc. It will be a thing.

  Moreover, in the container of the invention according to claim 10, for example, by using the annular member as the same material as the container main body, the mouth member can be attached to the container main body better and reliably.

It is a front view which shows roughly the structure of the six films which form the container which concerns on one embodiment of this invention. It is a perspective view which shows roughly the process of mounting | wearing a spout with the container main body of the said container. It is a perspective view which shows the structure of the said container roughly. It is a perspective view which shows roughly the structure of the said container of the folded state. (A) is a longitudinal sectional view schematically showing the configuration of the mouth member of the container, and (B) is a longitudinal sectional view schematically showing the configuration of a modified example of the mouth member. It is explanatory drawing which shows roughly the structure of the opening of the said container in a folding state. (A) is explanatory drawing which shows the structure of the other modification of the said opening member roughly, (B) is explanatory drawing which shows the attachment method different from the attachment method of the opening member shown in FIG. (A) is a partial enlarged front view schematically showing a folded configuration of a modified example of the bottom of the container, and (B) is a partially enlarged schematic showing a filled configuration of the bottom of the container shown in (A). It is explanatory drawing. (A) is a front view schematically showing the configuration of six films forming the container according to the first modification, and (B) is a schematic process for attaching a spout to the container body of the container according to the modification. (C) is a perspective view schematically showing a configuration of a container according to the modification. (A) is a front view schematically showing a configuration of six films forming a container according to a second modification, and (B) is a perspective view schematically showing a configuration of a container according to the modification. . (A) is a front view schematically showing the configuration of six films forming the container according to the third modification, and (B) is a perspective view schematically showing the configuration of the container according to the modification. . It is an expanded view which shows schematically the structure of the container which concerns on a 4th modification. It is an expanded view which shows schematically the structure of the container which concerns on a 5th modification. It is a disassembled perspective view which shows schematically the structure of the container which concerns on a 6th modification. It is a disassembled perspective view which shows roughly the structure of the container which concerns on a 7th modification.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

  As shown in FIGS. 2 to 4, the container according to one embodiment of the present invention is mounted on the container main body 1 for storing contents such as beverages and the upper part of the container main body 1, and is stored in the container main body 1. And a mouth member (hereinafter referred to as a spout) 2 for leading the content to the outside.

  As shown in FIGS. 2 and 3, the container body 1 includes a trunk portion 3, a shoulder portion 4 provided continuously above the trunk portion 3, and a bottom portion 5 provided continuously below the trunk portion 3. 4 and is configured to be foldable as shown in FIG. 4, and has a substantially regular hexagonal column shape in the expanded state (see FIG. 3).

  The trunk | drum 3 is expanded so that the substantially regular hexagonal cylinder shape which has the six side surfaces 6 which are substantially the same shape mutually may be exhibited (refer FIG.2 and FIG.3). In order to enable folding as shown in FIG. 4, the body 3 protrudes outward along six sides extending in the substantially vertical direction of the body 3 (the axial direction of the body 3). The first side fold line portion 7 for guiding the folding (mountain fold) is provided, and the center of each of the two pairs of side surfaces 6 facing each other out of the six side surfaces 6 is substantially in the vertical direction. A trunk side second folding line portion 8 is provided which extends in the axial direction of the trunk portion 3 and induces an inwardly convex fold (valley fold) (see FIGS. 2 and 3). That is, a total of six trunk side first fold line parts 7 and a total of four trunk side second fold line parts 8 are gusset parts (side gussets) 3a that allow the trunk part 3 to be folded. Two gusset portions 3 a are provided on the left and right sides of the body 3, and each gusset portion 3 a is folded inward to the approximate center of the body portion 3 in a folded state when the body portion 3 is folded.

  Further, as shown in FIGS. 2 and 3, seal ribs 9 extending along the trunk side first fold line portion 7 project from the outer sides of the trunk side first fold line portions 7 of the trunk portion 3. ing.

  The shoulder portion 4 is configured to have a substantially regular hexagonal shape in plan view (see FIG. 2). As shown in FIG. 4, the shoulder portion 4 can be folded together with the trunk portion 3, and at this time, the shoulder portion 4 is folded to the outside (upper side) of the trunk portion 3. As shown in FIG. 2, a total of six shoulder side first fold line portions 10 and a total of four shoulder side second fold line portions 11 are provided. Here, each shoulder side 1st fold line part 10 is toward the center part of the shoulder part 4 from the position which cooperates with each trunk | drum 1st fold line part 7 of the trunk | drum 3 in the shoulder part 4. It is configured to extend and guide an upward convex fold (mountain fold). Further, each shoulder-side second fold line portion 11 extends from the position where the shoulder portion 4 is linked (contacted) with each trunk-side second fold line portion 8 toward the center portion of the shoulder portion 4 and protrudes downward. It is comprised so that bending (valley fold) may be induced | guided | derived.

  Moreover, as shown in FIG. 2, the seal rib 12 extended along the shoulder side 1st fold line part 10 is protrudingly provided in the outer side of each shoulder side 1st fold line part 10 of the shoulder part 4. As shown in FIG.

  Further, as shown in FIG. 2, a substantially circular opening 13 for mounting the spout 2 is provided in the central portion of the shoulder portion 4.

  The bottom 5 is configured such that the bottom view has a substantially regular hexagonal shape (see FIG. 3). Then, as shown in FIG. 4, the bottom portion 5 is folded along the gusset portion 3 a of the trunk portion 3 when the trunk portion 3 is folded, and is folded inside the trunk portion 3. For this purpose, the bottom part 4 is provided with a total of six bottom-side first fold line parts 14 and a total of four bottom-side second fold line parts 15 as shown in FIG. Here, each bottom-side first fold line portion 14 extends from a position where the bottom portion 5 is linked (contacted) with each trunk-side first fold line portion 7 of the trunk portion 3 toward the center portion of the bottom portion 5. It is configured to induce an upward convex fold (mountain fold). Further, each bottom-side second fold line portion 15 extends from a position where the bottom portion 5 is linked (contacted) with each trunk-side second fold line portion 8 toward the center portion of the bottom portion 5, and has a downwardly convex fold. It is configured to induce a song (valley fold).

  Moreover, as shown in FIG. 3, the seal rib 16 extended along the bottom 1st fold line part 14 is protrudingly provided in the outer side of each bottom 1st fold line part 14 of the bottom part 5. As shown in FIG.

  And the container main body 1 of this form is comprised by the film 17 of the same size and the same shape (plane continuous shape) of 6 sheets which have flexibility, as shown in FIG. Each film 17 includes a substantially rectangular planar portion 18 that constitutes the body portion 3, a substantially isosceles trapezoidal shoulder constituting portion 19 that is provided on the upper side of the planar portion 18 and that constitutes the shoulder portion 4, and It has a bottom component portion 20 having a substantially isosceles triangle shape that is connected to the lower side of the planar portion 18 and constitutes the bottom portion 5.

  The crossing angle α of the extension lines of the left and right edges 19a, 19a of the shoulder component 19 is about 60 ° so that the shoulder component 19 extends substantially horizontally when the container body 1 is expanded (see FIG. 2). (See FIG. 1), and the upper edge 19b of the shoulder component 19 has an arc shape that forms the edge of the opening 13 (see FIG. 2).

  Further, when the container body 1 is expanded, the bottom component 20 extends substantially horizontally (see FIG. 3), so that the crossing angle β of the left and right edges 20a, 20a of the bottom component 20 is also about 60 °. It is configured (see FIG. 1).

  And the seal allowance 21 is provided in the right and left both sides (all circumferences except the upper edge 19b) of each film 17, and the seal allowances 21 of the adjacent film 17 are jointly sealed from the upper end to the lower end (for example, heat seal), Thereby, seal ribs 9, 12, and 16 are formed. Further, four of the six films 17 are subjected to processing such as gusset folding that forms the fold line portions 8, 11, and 15.

  Here, each film 17 is a laminate film formed by laminating, for example, a film forming a base material layer, a film forming a sealant layer, and the like, and in this example, forms the body portion 3 and the shoulder portion 4. In this state, the sealant layer is positioned on the innermost surface side of the body portion 3 and the shoulder portion 4. Depending on the contents of the container (object to be accommodated), a film that forms a gas barrier layer may be laminated on the film 17, and the determination and selection of the configuration of each layer of the film 17 and the combination thereof are as follows. What is necessary is just to carry out suitably in consideration of heat sealing suitability, content resistance property, sealing property, etc. comprehensively.

  As shown in FIG. 2, the spout 2 is attached to the container body 1 by inserting the spout 2 into the container body 1 from the open bottom 5 side of the container body 1 and opening the cylindrical portion 22 of the spout 2. The peripheral edge portion of the opening 13 in the shoulder portion 4 (container main body 1) is welded to the upper surface (sealing surface) of the protruding portion 23 by performing a sealing process (heat sealing in this example). And the bottom part 5 is closed after this welding.

  That is, as shown in FIGS. 2 and 5, the spout 2 is connected to the cylindrical portion 22 through the opening 13 and the cylindrical portion 22, and extends from the cylindrical portion 22 to the outside of the cylindrical portion 22. It has the protrusion part 23 extended. A screw portion 22a (see FIGS. 7A and 7B) to which the lid 24 is detachably attached is provided on the upper portion of the cylindrical portion 22. In addition, what is necessary is just to perform the injection | pouring of the content to the container main body 1 in the state in which the cover body 24 is not mounted | worn with the screw part 22a, for example.

  In addition, the cylindrical portion 22 is configured to be able to be inserted into the opening 13, whereas the protruding portion 23 is configured to be in contact with the peripheral edge of the opening 13 and not pass through the opening 13. And this protrusion part 23 is provided in a row by the lower end part of the cylindrical part 22, for example, the protrusion width | variety is 3 mm or more, and the upper surface is extended substantially horizontally.

  Here, as shown in FIG. 5A, since a plurality of convex portions (annular projections 25 in this example) 25 are provided on the upper surface of the protruding portion 23, the peripheral portion of the opening 13 is welded to the upper surface of the protruding portion 23. The accuracy will be greatly improved. And the spout 2 is shape | molded by resin (for example, thermoplastic resins, such as a high density polyethylene) for enabling the said welding.

  In order to allow the cylindrical portion 22 to be inserted into the opening 13, as shown in FIG. 6, the upper edge 19b of the shoulder constituting portion 19 is cylindrical with the intersection P of the extension lines of the left and right edges 19a, 19a as the center. What is necessary is just to comprise so that it may be located in the outer side of the circle C when the circle C which has the largest outer diameter of the part 22 is drawn. In this example, the cylindrical portion 22 is inserted into the opening 13 by forming the upper edge 19b along a circle C ′ having a diameter slightly larger than the maximum outer diameter of the cylindrical portion 22 with the intersection P as the center. In doing so, a slight gap is formed between the cylindrical portion 22 and the opening 13 to facilitate the insertion operation of the cylindrical portion 22. Here, the diameter of the circle C ′ may be appropriately determined within a range in which the protruding portion 23 can abut against the periphery of the opening 13 and cannot pass through the opening 13. If the length is 102 to 140% (preferably 105 to 112%), the cylindrical portion 22 can be easily inserted into the opening 13 and the peripheral portion of the opening 13 is securely welded to the upper surface of the protruding portion 23. be able to.

  In the container of the present embodiment obtained as described above, the other four planar portions 18 excluding the two planar portions 18 located on the forefront surface and the rearmost surface of the trunk portion 3 when the trunk portion 3 is folded are When the body part 3 is folded, it has a gusset part 3a that is folded inward. And even in the container of this embodiment, with the derivation of the filled contents, the left and right gusset portions 3a that have been in a stretched state are reduced so that they are folded inward, and the trunk portion 3 approaches a flat shape, It is effective by the two gusset portions 3a formed side by side on both the left and right sides of the body portion 3 that the body portion 3 that has become flat when the volume reduction of the container has progressed to some extent bends suddenly from the central portion. To be prevented. This is because the two gusset portions 3a arranged on the left and right sides of the body portion 3 are not parallel to each other, and a force to bend and bend is applied to one of the two gusset portions 3a. This is because the other gusset portion 3a is subjected to a force resisting this force.

  Therefore, the container of the present embodiment is reduced in volume and hardly bends even when the body part 3 approaches flat, so that the self-supporting stability and the convenience of handling are improved, and this effect is obtained at the boundary between the adjacent planar portions 18. This is further improved by the seal rib 9 formed.

  In this embodiment, the protrusion 23 of the spout 2 and the peripheral portion of the opening 13 of the container main body 1 are joined to improve the degree of freedom of the container shape, and the three-dimensional shoulder 4 is attached to the container main body 1. In addition to being able to easily increase the filling capacity, it is possible to arrange multiple containers without gaps between containers as with ordinary PET bottles. And handling convenience.

  Furthermore, in this embodiment, when the body portion 3 is expanded into a substantially cylindrical shape, the bottom portion 5 is developed so as to have a shape that is nearly flat, so that it is also possible to easily increase the filling capacity. it can.

  Moreover, when the bottom portion 5 is deformed as the container of this example is somewhat deflated from the filling state, this deformation is caused by the folding folds (bottom side first and second folding line portions 14 provided on the bottom portion 5). 15), the center part of the bottom part 5 is retreated to the inside of the container (body part 3), and the deformation of the bottom part 5 (for example, the bottom part 5) Since the deformation in which the central portion advances to the outside of the container rather than the peripheral portion is less likely to occur, the self-supporting stability of the volume-reduced container is also increased.

  In addition, in this embodiment, since the seal rib 9 is provided at each boundary between the adjacent side surfaces 6 (planar portions 18), the container of this example has a structure that is not easily buckled by a vertical compressive load. Therefore, this also improves the self-supporting stability and the shape retention.

  In addition, this invention is not limited to said embodiment at all, Of course, it can change and implement variously in the range which does not deviate from the summary of this invention. For example, the following modifications can be given.

  Although the container of this example has a suitable structure used as a sealed container, it is not restricted to this, The container which is not sealed may be sufficient. The container of this example is a kind of standing pouch, but is not limited to this and may be a paper container or the like. That is, as the material of the container body 1, paper or the like may be used in addition to the synthetic resin film.

  The upper surface of the protrusion 23 and the shoulder 4 do not extend substantially horizontally, and may have a tapered shape that spreads downward as shown in FIG. As a taper angle in this case, an angle in a range of 20 ° or less greater than 0 ° can be employed, assuming that the case of extending in the horizontal direction is 0 °. In addition, examples of the shape of the projecting portion 23 in this case include a truncated cone shape (a round bowl shape) and a truncated pyramid shape (a square bowl shape). When the upper surface of the projecting portion 23 is tapered, the spout 2 is guided by the tapered surface when the spout 2 is inserted into the opening 13, and positioning thereof is facilitated. The efficiency of the sealing process for welding to the upper surface of 23 can be improved.

  Moreover, although the some convex shape 25 (refer FIG. 5 (A) and (B)) provided in the upper surface of the protrusion part 23 was concentric with each other, it is not restricted to this, For example, it becomes an iris shape or a diamond shape. Furthermore, each convex portion 25 is not limited to the annular protrusion, and may have another shape.

  The joint seal between the seal margins 21 and the welding between the peripheral portion of the opening 13 and the upper surface of the protrusion 23 are not limited to heat sealing, and may be performed by, for example, ultrasonic sealing, or other joining methods may be employed. .

  In this embodiment, the container main body 1 is formed by jointly sealing a single plane continuous film. However, the present invention is not limited to this. For example, a film body formed into a substantially cylindrical shape is processed (cutting, joining, etc.). Thus, the container body 1 may be formed.

  In this embodiment, the protruding portion 23 of the spout 2 is joined to the container main body 1, but the protruding portion 23 may not be provided on the spout 2, and in this case, as shown in FIG. What is necessary is just to provide the cylindrical part 26 for joining (welding) to the outer peripheral surface of the cylindrical part 22 in the container main body 1. FIG. In this case, if a plurality of convex portions (annular protrusions 27 in this example) 27 as shown in FIGS. 5A and 5B are provided on the outer peripheral surface of the cylindrical portion 22, The welding accuracy of the container body 1 with respect to the outer peripheral surface is greatly improved.

  In this embodiment, the spout 2 is directly attached to the container main body 1. However, the present invention is not limited to this, and as shown in FIG. After an annular film (an example of an annular member) 28 provided so as to surround the base end of the portion 22 is joined to the upper surface side of the projecting portion 23, the upper surface of the annular film 28 is the lower surface of the peripheral portion of the opening 13 of the container body 1. You may make it join to. In this case, even if the diameter of the opening 13 of the container main body 1 is larger than the diameter of the protrusion 23 of the spout 2, the spout 2 can be reliably attached to the container main body 1.

  Here, in order to implement the mounting shown in FIG. 7B, the film 17 used in the container body 1 has the sealant layer S1 on the innermost surface side, whereas the uppermost surface of the annular film 28 is used. And sealant layers S2 and S3 must be provided on both of the lowermost surfaces. Further, as shown in FIG. 7A, when the spout 2 does not have the protruding portion 23, for example, a portion (not shown) joined to the outer peripheral surface of the cylindrical portion 22 of the spout 2 is provided. What is necessary is just to provide in the annular film 28. FIG.

  The seal ribs 9, 12, 16 may be brought into a state along the outer surface of the container body 1, and the side surfaces of the seal ribs 9, 12, 16 and the outer surface of the container body 1 may be joined so as to maintain this state, For example, the entire surfaces of the seal ribs 9, 12, and 16 may be joined to the outer surface of the container body 1 in a line shape. In addition, this joining step can be performed by, for example, heat sealing or ultrasonic sealing. By bonding the seal ribs 9, 12, and 16 to the outer surface of the container body 1, the rib effect is enhanced and the strength (maintenance of the container body 1 is maintained). (Formability) is improved.

  In this embodiment, the seal rib 9 is provided along all the outer sides of each side (six sides) extending in the substantially vertical direction of the body portion 3, but may be omitted as appropriate or may not be provided at all. The same applies to the seal ribs 12 and 16.

  In this embodiment, the bottom component 20 of each film 17 is in the shape of an isosceles triangle (regular triangle), but it can also be configured as shown in FIGS. 8A and 8B, for example. That is, the left and right edges 20a, 20a of the bottom component portion 20 shown in FIG. 8A are an edge H1 having an inclination angle θ1 of about 45 ° and an edge having an inclination angle θ2 of about 60 ° in this order from the top. It has a multi-stage shape composed of a portion H2 and an edge H3 having an inclination angle θ3 of approximately 45 °. And if the bottom component part 20 of each film 17 is comprised in this way, when the container main body 1 will be in the state expanded, as shown to FIG. 8 (B), the part corresponding to the edge parts H1 and H3 will be substantially. Only the portion corresponding to the edge portion H2 extending horizontally is inclined, and in this case, the center portion of the bottom portion 5 is located above the peripheral portion (the ground contact portion), so that the self-supporting stability is good. Become. The same deformation can be performed on the shoulder constituting portion 19.

  In the present embodiment, the container body 1 in an expanded state has a substantially regular hexagonal column shape. However, the present invention is not limited to this, and for example, as shown in FIGS. The forefront surface and the rearmost surface may be configured to have a hexagonal column shape (non-regular hexagonal column shape) having a larger width than the other side surfaces. In this case, the six films 17 forming the container body 1 are not the same size and shape, but the width of the two films 17A is set to the other four sheets as shown in FIG. What is necessary is just to make it larger than the horizontal width of the film 17B.

  In the example shown in FIG. 9 (A), the shoulder constituting portions 19 of the four films 17B are different from the shoulder constituting portions 19 of the film 17 in FIG. There is no portion corresponding to the upper edge 19b. And the circular-arc-shaped part which comprises the opening 13 is formed only in the upper edge 19b of two films 17A.

  As shown in FIG. 10 (B), an opening 29 may be provided in the central portion of the bottom 5 and the opening 29 may be closed by a sheet-like closing member 30 formed separately from the container body 1. . In this case, since the seal rib 16 is not concentrated at the center of the bottom portion 5, the self-supporting stability is further improved.

  As shown in FIG. 10 (B), in order to provide the opening 29 in the central portion of the bottom portion 5, as shown in FIG. 10 (A), the bottom component portion 20 of each film 17 has an arc shape that forms the opening 29. What is necessary is just to provide the lower edge 20b. In addition, in the example shown to FIG. 10 (A) and (B), although both the opening 29 and the closure member 30 are substantially circular shape, a various shape is employable. Further, in the illustrated example, the closing member 30 is joined from the inside of the container body 1 to the peripheral portion of the opening 29 in the bottom 5, but it may be joined from the outside of the container body 1, and the joining method is also as follows. An appropriate method such as heat sealing or adhesion using an adhesive may be selected.

  Moreover, you may make it join the obstruction | occlusion member 30 shown to FIG. 10 (B) from the inner side or the outer side of the container main body 1 with respect to the center part of the bottom part 5 of the container main body 1 shown in FIG.

  In order to reduce the number of seal ribs 16 formed on the bottom portion 5 and reduce the concentration of the seal ribs 16 in the central portion of the bottom portion 5, as shown in FIGS. You may make it comprise the container main body 1 by the 1st film 17C provided in a row under the part 18, and the 2nd film 17D which does not have the bottom structure part 20. FIG.

  That is, in the example shown in FIGS. 11A and 11B, one set of the first film 17C and one second film 17D forms a pair, and the second film 17D is shown in FIG. The bottom component 20 is cut from the film 17 shown in FIG. 1, and the first film 17C is formed on the bottom component 20 of the film 17 shown in FIG. The bottom component 20 'corresponding to 20 is added. The second film 17D is joined to the bottom component 20 ′ of the first film 17C, and the bottom component 20, 20 ′ of the first film 17C is joined to the bottom component 20 of the other first film 17C. ', 20 are also joined.

  In the example shown in FIGS. 11A and 11B, one set of the first film 17C and one set of the second film 17D is one set, but various modifications are possible. The first film 17C has two bottoms on the bottom component 20 of the film 17 shown in FIG. 1 so that one first film 17C and two second films 17D form a pair. You may comprise so that the shape which added component part 20 'may be exhibited.

  In order to eliminate the seal rib 16 formed on the bottom portion 5, as shown in FIG. 12, the container body 1 is provided with a planar portion 18 on each side (periphery) of a substantially regular hexagonal bottom constituting portion 31 constituting the bottom portion 5. Further, it may be constituted by a single sheet-like member in which the shoulder constituting portion 19 is continuously provided.

  Here, the bottom component 31 shown in FIG. 12 corresponds to a combination of six bottom components 20 shown in FIG. Further, the container body 1 is formed by sealing the seal margins 21 at the peripheral edges of the adjacent planar portion 18 and shoulder constituting portion 19 together. And the front-end | tip part of the shoulder structure part 19 of this container main body 1 exhibits the rectangular shape narrower than the planar part 18, and forms the cylindrical extraction part by which the upper end was closed by the palm seal. Therefore, if a part (for example, upper part) of this pouring part is excised or cut into this pouring part, an opening for pouring the contents can be formed, and the spout 2 is not necessary. .

  In the example shown in FIG. 12, all the six planar portions 18 are connected to the bottom constituent portion 31, but not limited to this, only a part of the planar portions 18 are connected to the bottom constituent portion 31, The remaining planar portion 18 may be connected to the continuous planar portion 18. As an example, a case where only one planar portion 18 is connected to the bottom constituent portion 31 and another planar portion 18 is sequentially connected to the planar portion 18 will be described with reference to FIG.

  In the example shown in FIG. 13, the six planar portions 18 are arranged in a line, and the seal margins 21 outside the planar portions 18 at both the left and right ends are sealed together, so that only one seal rib 9 is formed. Further, in the example shown in FIG. 13, a rectangular seal margin 33 is connected to each of the six sides (peripheries) of the bottom component portion 31, and a seal margin 34 that is sealed with the seal margin 33 is provided for each planar portion 18. (The edges of adjacent seal margins 34 are cut). In addition, the container body 1 is formed by sealing the seal margins 21 at the peripheral edges of the adjacent shoulder constituting portions 19 together. In the example shown in FIG. 13 as well, the extraction portion is formed as in the example shown in FIG.

  In the example shown in FIG. 13, only one seal rib 9 is formed. However, the present invention is not limited to this. For example, a seal allowance 21 for forming the seal rib 9 may be appropriately provided between the adjacent planar portions 18. Good.

  In the example shown in FIGS. 12 and 13, the spout part is provided instead of the spout 2, but the present invention is not limited to this, and the spout 2 may be mounted without providing the spout part.

  The body portion 3 and the bottom portion 5 of the container body 1 are not limited to being integrated with each other, but may be separated as shown in FIG. That is, in the container of this embodiment, as shown in FIG. 1, each film 17 constituting the container body 1 is provided with a planar portion 18, a shoulder constituting portion 19 and a bottom constituting portion 20 constituting the trunk portion 3. However, the bottom component 20 may be omitted, and instead, a member constituting the bottom 5 may be used separately.

  More specifically, the container main body 1 shown in FIG. 14 is composed of two members, a body part constituting body 35 constituting the body part 3 and a bottom part constituting body 36 constituting the bottom part 5, and the body part constituting body 35 is a shoulder part. 4 (shoulder component 19) is also included.

  As shown in FIG. 14, the bottom structure 36 has a total of six joint allowances 37 that are suspended from the periphery (six sides) of the substantially regular hexagonal portion constituting the bottom 5. Note that the adjacent joint allowances 37 may be connected or separated.

  Then, each joint allowance 37 of the deployed bottom structure 36 is joined to the lower part of the expanded body structure 35 so that the bottom 5 closes the lower opening of the body 3 (this In the example, heat seal). That is, the lower part of the body part structure 35 is used as the joining allowance 38.

  The joining width between the joining allowance 38 of the trunk portion constituting body 35 and the joining allowance 37 of the bottom constituting portion 36 can be set to, for example, 5 mm or more. Further, the lower end of the joining allowance 37 and the lower end of the joining allowance 38 may be substantially coincident, but the joining allowance 37 may be joined to a position slightly above and below the substantially coincident position.

  In the example shown in FIG. 14, the joint allowance 37 is provided so as to hang down from the periphery of the bottom 5, but conversely, it may be provided so as to extend upward from the periphery of the bottom 5. The joining allowance 37 which is a part of 36 constitutes the lower part of the trunk portion 3.

  Moreover, the container main body 1 may consist of three or more members. For example, as shown in FIG. 15, the body 3 constituting the container body 1 and the shoulder 4 are separated, that is, the body structure 39 constituting the body 3 and the shoulder 4 are formed. The shoulder structure 40 can be separated. Here, the trunk part structure 39 shown in FIG. 15 has a configuration equivalent to that obtained by removing a part constituting the shoulder part 4 from the trunk part structure 35 shown in FIG. 14, and the shoulder part shown in FIG. The structure 40 has a structure corresponding to the bottom structure 36 shown in FIG. 14 provided with the opening 13.

  The attachment of the spout 2 to the shoulder structure 40 shown in FIG. 15 can be performed in the same manner as the attachment of the spout 2 to the container body 1 shown in FIG. 2 and the trunk structure 35 shown in FIG. In the example shown in FIG. 15, the seal rib 12 is not provided on the shoulder 4, but the seal rib 12 may be provided on the shoulder 4. Further, in the example shown in FIG. 15, when the trunk portion 3 is folded, the shoulder portion 4 is folded outward (upward) of the trunk portion 3, but when the trunk portion 3 is folded, the shoulder portion 4 is folded. It may be made to fold inside the portion 3, and for that purpose, the shoulder side second fold line portion 11 is provided at the position where each shoulder side first fold line portion 10 is provided, and each shoulder side first fold line portion 10 is provided. What is necessary is just to provide the shoulder side 1st fold line part 10 in the position in which the two fold line part 11 is provided.

  In addition, in the example shown in FIG. 15, the shoulder portion structure 40 has a total of six joint margins 41 joined to the upper portion of the trunk portion body 39, and each joint margin 41 extends upward from the peripheral edge of the shoulder portion 4. However, each joint allowance 41 may be provided so as to hang down from the peripheral edge of the shoulder portion 4.

  Moreover, in the example shown in FIG. 15, the seal rib 9 extended along the trunk | drum side 1st fold line part 7 is protrudingly provided in the outer side of each trunk | drum side 1st fold line part 7 of the trunk | drum 3, A protruding portion of the seal rib 9 is formed with a cushion portion 9a having a loop shape in a cross sectional view. And by this cushion part 9a, the touch when holding the trunk | drum 3 can be made favorable. In order to form the cushion portion 9a, for example, the body structure 39 may be formed by using a single film formed in a cylindrical shape, and the seal ribs 9, 12, 16 and the like shown in this embodiment and the like are formed. A portion corresponding to the cushion portion 9a can also be provided.

  As shown in FIGS. 2 and 3, the container body 1 of the present embodiment is configured so that the body portion 3 has a hexagonal column shape having six side surfaces. Or you may comprise the container main body 1 so that the polygonal column shape which has 7 or more side surfaces may be exhibited. In addition, it is preferable to configure the container body 1 so as to have a substantially regular polygonal column shape, regardless of the number of side surfaces, in that it is easy to maintain a balance in a self-supporting posture and to improve self-supporting stability.

  In this embodiment, when the container body 1 is expanded, the crossing angles α and β (see FIG. 1) are set to about 60 ° so that the shoulder 4 and the bottom 5 extend horizontally. 4 and the bottom 5 are each composed of six films 17 having the same size and the same shape, and 360 ° is divided by 6 which is the number of the films 17 to be 60 °. The size may correspond to the number. Further, an angle larger than the angle obtained by dividing 360 ° by the number of films 17 may be given to the crossing angles α and β so that the shoulder 4 and the bottom 5 do not extend horizontally.

  However, for example, in the case where the even number of side surfaces is six or more, the container body 1 may be configured so as to exhibit a non-regular polygonal column shape in which the lateral width of the foremost surface and the rearmost surface is larger than the lateral width of the other side surfaces. (See FIGS. 9B and 9C).

  A bottom-side second folding line 8 is provided on each surface of the body 3 (also on a non-foldable surface) and extends from the center of each side of the bottom 5 toward the center of the bottom 5. If the tatami wire portion 15 is provided, when the volume of the container body 1 is reduced, the volume of the container body 1 is reduced more evenly and uniformly in the front-rear and left-right directions, so that it is possible to further improve the self-supporting stability. .

  Needless to say, the above modifications may be combined as appropriate.

1 container body 2 mouth member (spout)
DESCRIPTION OF SYMBOLS 3 Body part 5 Bottom part 9 Sealing rib 13 Opening 17 Film 18 Planar part 20 Bottom component part 22 Cylindrical part 23 Protrusion part

Claims (10)

  A container body formed of a film has a body portion formed of five or more planar portions, each planar portion extending from the upper portion of the container body to the lower portion of the container body, and A container in which ribs are provided at the boundary between at least two adjacent planar portions of the planar portions.   The other planar portions excluding the planar portions located at the forefront and rearmost surfaces of the trunk when the trunk is folded have gussets that are folded inward when the trunk is folded. Item 4. The container according to Item 1.   A bottom component extending from the peripheral portion of the bottom of the container body toward the central portion of the bottom is connected to the lower portion of each planar portion, and the bottom components connected to the adjacent planar portions are joined together. The container according to claim 1 or 2.   The container according to claim 3, wherein a central portion of the bottom portion is closed by a closing member formed separately from the bottom constituent portion.   As the planar portion, a first planar portion in which a bottom constituent portion constituting the bottom portion of the container main body is continuously provided, and a second planar portion in which the bottom constituent portion is not continuously provided are provided. The container according to claim 1 or 2, wherein the second planar portion is joined to a bottom component of the first planar portion.   The container according to claim 1 or 2, wherein a bottom portion of the container main body is constituted by a single sheet-like member, and the planar portion is continuously provided at the periphery of the sheet-like member.   The bottom of the container body is formed by a single sheet-like member having a seal margin at the periphery, and a seal margin that is sealed with the seal margin at the periphery of the sheet-like member is below the planar portion. The sheet-like member is continuously connected to the periphery of the sheet-like member through a seal margin provided on each of the sheet-like members, and the remaining portion of the sheet-like member is connected to the part of the sheet-like member. The container according to claim 1 or 2.   The body portion of the container body is composed of six planar portions, and two pairs of opposed planar portions of the six planar portions are each folded inward when the trunk portion is folded. The container according to any one of claims 1 to 7, which has   A mouth member attached to the container body, the mouth member being inserted into an opening provided in an upper portion of the container body, and the tubular part provided continuously from the tubular part. A protruding portion extending outward of the cylindrical portion, and a peripheral portion of the opening in the container body is joined to an upper surface or a lower surface of the protruding portion. container.   The container according to claim 9, wherein a peripheral portion of the opening is joined to the projecting portion through an annular member provided in a sheet shape so as to surround a proximal end of the cylindrical portion.

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