JP2009280227A - Bag container - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a bag container which is easily breakable when an easily breakable part of a spout forming part is broken by tearing off or tearing up to form an opening part, which makes a content such as a liquid hardly stay in a predetermined cutting part, and which has good formability by a mold. <P>SOLUTION: In the bag container 10, a container body made of a synthetic resin having a bottom part and a barrel part 22 equipped with the spout forming part 13 is molded by a mold, and a spout is formed by removing the predetermined cutting part 16 by breaking the easily breakable part 15 of the spout forming part 13, to form the bag container 10. A dome part 17 with a hollow inside and a flat shape is formed in the predetermined cutting part 16. A knob part 18 for opening is provided under a condition that it is projected to one side in the side face direction of the barrel part to the central axis of the spout forming part 13, and is continuously provided on the top face part 17a of the dome part 17. A part continuously provided to the top face part 17a of the dome part 17 in the knob part 18 for opening is a continuously provided base part 22a with a hollow part 22b. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a bag container formed by molding a container body made of a synthetic resin having a body portion having a bottom portion and a spout forming portion with a mold.

  2. Description of the Related Art Conventionally, there is known a bag container that is formed by molding using a mold such as blow molding, and includes a bottom portion and a trunk portion including a spout forming portion, and can be placed on a placement surface with the bottom portion as a placement surface. It has been. In these bag containers, the sealed contents are poured out by forming a spout by cutting a spout formation part.

  In this case, it is troublesome to perform the operation of cutting the spout forming portion using a knife or scissors, which is troublesome for an unfamiliar user. For this reason, the spout forming portion is provided with an annular easily breakable portion by a thin cut portion or a narrow groove-like recess, and the easy breakable portion is broken by an operation of tearing or tearing. A container that can be easily used is known (see Patent Document 1).

Although the bag container of patent document 1 can form a spout by separating the excision scheduled part of a front-end | tip region from the easily breakable part of a spout formation part, the fracture | rupture for forming a spout is easy. For this reason, a depression or a raised portion is formed discontinuously in the circumferential direction of the spout forming portion in the portion to be excised.
JP 2007-091259 A

  However, in the bag container described in Patent Document 1, the inside of the planned excision part has a complicated shape due to the formation of the depressed part and the raised part, and a liquid pool is likely to occur in the planned excision part. The liquid pool is due to the splashing and scattering of the content liquid caused by distribution vibration. When a liquid pool is generated inside the portion to be excised, the liquid inside the portion to be excised may scatter around when the easily breakable portion is broken and the spout is opened.

  In the present invention, when the easily breakable portion of the spout forming portion is torn or torn by tearing or the like to form the opening, extension of the planned excision portion is prevented and the opening is formed. An object of the present invention is to provide a bag container that can be easily ruptured, and that contents such as liquid are less likely to stay inside the portion to be excised, and has good moldability with a mold.

  In the present invention, a container body made of a synthetic resin having a bottom portion and a barrel portion having a spout forming portion is molded by a mold, and a portion to be excised is removed by breaking the easily breakable portion of the spout forming portion. A bag container for forming a spout, wherein the excision planned portion is formed with a flat-shaped dome having a hollow inside, and an opening knob portion is formed with respect to the central axis of the spout forming portion, A side portion of the body portion, protruding to one side and connected to the top surface portion of the dome portion, and a portion of the opening knob portion connected to the top surface portion of the dome portion is a hollow portion The above-mentioned object is achieved by providing a bag container that is a continuous base having the above.

  When the bag container of the present invention is broken by tearing or tearing the easily breakable part of the spout forming part to form the opening, the opening of the part to be excised is prevented and the opening is formed. Can be easily broken, and contents such as liquid are less likely to stay inside the portion to be excised.

  Further, the bag container of the present invention has good moldability by a mold, such as a relatively short molding cycle.

  A bag container 10 according to a preferred embodiment of the present invention shown in FIGS. 1A and 1B is formed by blow molding such as direct blow molding or injection blow molding as molding by a mold. . In addition, the bag container 10 of the present embodiment stores, for example, a liquid agent, particularly a hair cleaning agent, a whole body cleaning agent, a liquid detergent, a cleaning agent, and the like as contents, and is opened and used in other containers. Used as a refill bag container for refilling things. Furthermore, the bag container 10 of this embodiment can perform easily and smoothly operation which cuts a part of the spout formation part 13 provided and protruded from the trunk | drum 12 of the container main body 11, and forms a spout. .

  The bag container 10 of the present embodiment is formed by molding a container body 11 made of a synthetic resin having a bottom portion 14 and a barrel portion 12 having a spout forming portion 13 with a mold, and an easily breakable portion of the spout forming portion 13. 15 is a bag container in which a spout is formed by removing a portion 16 to be cut in the distal end region from the easily breakable portion 15 by breaking 15. The spout forming part 13 is a cylinder heading in an upward direction perpendicular or substantially perpendicular to the placement surface P1 formed by the bottom part 14 (for example, a direction that is vertically upward when placed on a horizontal surface with the bottom part 14 down). Projecting from the portion 12 is provided. Moreover, the easily breakable part 15 is formed along the surface P2 substantially parallel to the mounting surface P1, as shown in FIG. The planned cut portion 16 is formed with a flat dome portion 17 having a hollow inside adjacent to the easily breakable portion 15.

Further, in the planned cutting portion 16, a knob piece 18 as an opening knob portion is provided on one side of the spout forming portion 13 (in this embodiment, the barrel portion with respect to the central axis X of the spout forming portion 13 in FIG. 2). 12 is provided in a state of projecting in the side surface direction (right side) of the dome portion 17 and continuing to the top surface portion 17a and the outer peripheral portion 17b of the dome portion 17. The knob piece 18 is integrally provided on the top surface portion 17 a and the outer peripheral portion 17 b of the dome portion 17. Further, a part (lower part) of the knob piece 18 is provided extending toward the base 20 of the spout forming part 13 across the easily breakable part 15, but is continuous only with the planned cutting part 16.
The knob piece 18 is integrally formed with the dome portion 17 and the planned cutting portion 16 when the bag container 10 is formed. Further, the knob piece 18 of the present embodiment is formed in a flat plate shape having a surface substantially orthogonal to the surface P2 parallel to the placement surface P1, and also along the parting line 21 by the molding die. It is provided on the surface. Here, the surface along the parting line 21 is a virtual surface including the parting line 21.

  In this embodiment, the synthetic resin container body 11 is preferably formed by blow molding into a shape having a body portion 12 including a bottom portion 14 and a spout forming portion 13. As the blow molding, various known molding methods such as direct blow molding and injection blow molding can be employed.

  In addition, as a synthetic resin material for forming the container body 11, a soft synthetic resin such as a polyolefin resin such as LDPE (low density polyethylene), L-LDPE (linear low density polyethylene), and OPP (stretched polypropylene) is used. A resin material or a polyester resin such as PET (polyethylene terephthalate) can be used as a single layer. A laminated resin of these synthetic resins and other synthetic resins can also be employed. For example, a laminated resin in which LDPE or L-LDPE is used as the inner layer and the outer layer is HDPE (high density polyethylene) can be used. Also, EVOH resin (ethylene vinyl alcohol copolymer resin), EVA resin (ethylene vinyl acetate copolymer resin), resin laminated with nylon resin, etc., and resin such as EVA, EVOH, nylon, etc. with resin such as PE (polyethylene) A blended resin can also be employed.

  In this embodiment, the body 12 of the container body 11 is blow molded using the above-described synthetic resin material, and the mold parting is performed in a cross section that crosses the body 12 parallel to the placement surface P1. The side edge of the front portion 12A and the side edge of the back portion 12B are continuous via the line 21, thereby providing a rectangular hollow cross-sectional shape with an ellipse or a rounded corner, and wide front view and back view. It is formed in a flat shape with a narrow side view. In addition, the container body 11 is integrally molded with the bottom portion 14 by the blow molding at the lower end edge of the body portion 12, and the upper portion of the body portion 12 gradually decreases in diameter as a shoulder portion 19, and is poured from the center portion of the shoulder portion 19. The outlet forming portion 13 is formed in a shape protruding upward with the neck portion.

  Here, it is preferable that the trunk | drum 12 and the bottom part 14 of the container main body 11 made from a synthetic resin are shape | molded by the thickness of 100 micrometers or more so that stable independence can be ensured. In addition, it has moderate flexibility, and can be crushed, folded or bent, and has a thickness of, for example, 700 μm or less, more preferably 500 μm or less, so that it can be made almost flat. It is preferable to be formed into a thin wall.

  In the present embodiment, the spout forming portion 13 that protrudes upward from the central portion of the shoulder portion 19 of the trunk portion 12 is connected to the base portion 20 and the upper end portion of the base portion 20 via the easily breakable portion 15. It has the scheduled cutting part 16 which obstruct | occludes the upper end opening (spout port). The base portion 20 has a hollow, substantially truncated cone shape that gradually tapers toward the tip, and the shoulder portion of the trunk portion 12 with its central axis X oriented in a direction perpendicular to the placement surface P1. It protrudes upward from 19.

  Further, in the present embodiment, the spout forming portion 13 is formed by the easily breakable portion 15 having a narrow groove-like concave portion formed so as to be annularly formed along the outer peripheral surface of the spout forming portion 13, It is divided into an upper part to be excised 16. The bag container 10 is released from the sealed state by separating the planned cutting portion 16 at the distal end region from the base portion 20 rather than the easily breakable portion 15 to form a spout.

  Here, the narrow groove-like concave portion constituting the easily breakable portion 15 is formed by a narrow groove having a substantially V-shaped cross section, for example, preferably along a plane parallel to the placement surface P1 by the bottom portion 14. . Moreover, it is preferable that the deepest part of the narrow groove-shaped recess or the part where the two surfaces forming the groove intersect are thin so that the fracture is easy.

The dome portion 17 forms a part of the planned excision portion 16 and is continuously provided above the base portion 20 via the easily breakable portion 15. As shown in FIG. 3, the dome portion 17 has a height T in the protruding direction of the spout forming portion 13 that is smaller than widths W1 and W2 (see FIG. 4A) in a direction orthogonal to the protruding direction. It is formed in a simple shape.
The top surface portion 17a of the dome portion 17 is formed in a substantially flat shape. Specifically, the central portion is formed in a curved surface shape that rises slightly upward.
Further, on the upper surface of the top surface portion 17a, a knob piece 18 is integrally provided so as to extend in a direction along the parting line 21 by the molding die (side edge direction of the front surface portion 12A or the back surface portion 12B). .

As shown in FIG. 4A, the dome portion 17 in the present embodiment has a substantially circular shape in plan view, but the width W2 in the direction in which the knob piece 18 extends is larger than the width W1 in the direction perpendicular to the knob piece 18. Slightly larger.
The dome portion 17 has a height T in the protruding direction of the spout forming portion 13 of 20 to 80%, particularly 25 to 50% of the minimum width in the direction perpendicular to the protruding direction (the width W1 in this embodiment). Preferably there is.
The minimum width in the direction perpendicular to the protruding direction is the smaller one of the width W2 in the direction in which the knob piece 18 extends and the width W1 in the direction perpendicular to the width W1. Moreover, it is preferable that the width W2 of the dome part 17 in the direction where the knob piece 18 extends is 100 to 150%, particularly 110 to 130% of the width W1 in the direction orthogonal thereto.

  As shown in FIG. 4B, the dome portion 17 has a dome portion 17 in a cross section by a plane orthogonal to the central axis X of the spout forming portion 13 or a cross section by a plane orthogonal to the height direction of the dome portion 17. Both the inner and outer surfaces are substantially circular, and the inner surface and the outer surface are similar. A flat cavity having a shape substantially the same as the outer shape of the dome portion 17 is formed inside the dome portion 17. The cavity of the dome part 17 communicates with the cavity inside the base part of the spout forming part 13 through a small diameter part surrounded by the easily breakable part 15.

  The excision scheduled portion 16 having the dome portion 17 is disposed so as to cover the upper end opening (spout port) of the base 20 and closes the spout port. The excision scheduled portion 16 having the dome portion 17, the base portion 20, and the easily breakable portion 15 are integrally formed.

  The knob piece 18 is a portion that functions as an opening knob portion when the easily breakable portion 15 is broken and opened. In the present embodiment, the knob piece 18 has a joint base end portion 22 that forms a connecting portion with the dome portion 17, and an overhang provided so as to project from the joint base end portion 22 to one side of the spout formation portion 13. It has a flat plate shape having a locking portion 23. The overhanging locking portion 23 has a substantially oval shape in which a portion overlapping the spout forming portion 13 is cut out. That is, as described above, a part (lower part) of the knob piece 18 is provided to extend toward the base portion 20 of the spout forming part 13 across the easily breakable part 15, but the knob piece 18 is scheduled to be excised. Only the part 16 is continuous.

The joint base end portion 22 is a portion that is continuously provided along the outer surface of the dome portion 17, and a portion that is continuous with the upper surface of the top surface portion 17 a of the dome portion 17 is a continuous base portion 22 a having a cavity portion 22 b. ing. The continuous base portion refers to a base portion connected to the joint base end portion 22 and the upper surface of the top surface portion 17a, and is a cross-sectional view (a surface including the central axis X of the spout forming portion) as shown in FIG. When the cross section when viewed in the direction of the width W1 is viewed), the width B1 of the outer peripheral portion is wider than the width B2 of the knob piece 18. Although the difference between the width B2 of the knob piece 18 and the width B1 of the outer peripheral portion of the continuous base portion 22a can be determined as appropriate, in the present embodiment, B1-B2 is set to 1 to 2 mm. In the present embodiment, B1 is set to 2 to 3 mm.
By providing the connecting base portion 22a having the hollow portion 22b at the portion of the joining base end portion 22 that is continuous with the upper surface of the dome portion 17, the dome portion 17 is not increased without increasing the thickness of the connecting base portion 22a. And the side where the overhanging locking portion 23 of the dome 17 protrudes is formed as a spout when the knob 18 is pulled up to break the easily breakable portion 15. It is possible to efficiently transmit a compressive load to a portion of the portion 13 opposite to the central axis X. Thus, the overhanging locking portion 23 is stretched with the end 15a of the easily breakable portion 15 located on the opposite side to the center axis X of the spout forming portion 13 as the fulcrum. It is possible to start the break from the end portion 15b of the easily breakable portion 15 located on the exit side so that the breakable portion 15 can be broken more smoothly.

  The thickness of the continuous base 22a (same as B1 described above) is provided by providing the continuous base 22a having the hollow portion 22b in the portion of the joint base end 22 that is continuous with the upper surface of the dome 17. The reason why the connecting portion with the dome portion 17 can be effectively reinforced without increasing the size is that when the connecting base portion 22a is viewed in cross section as shown in FIG. 3, the portion is substantially U-shaped. This is because the structure has a high strength (similar structure to a steel C-type channel). Furthermore, since the hollow portion 22b is provided, it is possible to obtain effects such as improvement of moldability by a mold, such as a relatively short molding cycle.

In addition, when the average thickness of the dome portion 17 is 1, the average thickness of the continuous base portion 22a is about 0.8 to 2.
Therefore, since the wall thickness of the continuous base portion 22a is not so large, it is possible to obtain an effect that the moldability by the mold is good, such as a relatively short molding cycle. The thickness of the continuous base portion 22 a and the dome portion 17 is the thickness of the wall that separates the cavity in the cavity portion 22 b or the dome portion 17 from the outside of the bag container 10.
The cavity 22b in the bag container 10 of the present embodiment has a dimension in a direction along the parting line 21 in a direction perpendicular to the parting line 21 in a cross section by a plane orthogonal to the central axis X of the spout forming part 13. Greater than dimensions.

  The cavity in the cavity portion 22b or the dome portion 17 can be formed by devising a mold cavity shape and blowing a cylindrical parison between a pair of molds in a container forming step.

The overhang | locking latching | locking part 23 is the part which protruded and provided so that it might protrude over the shoulder part 19 of the container main body 11 from the joining base end part 22, and the peripheral part is the thick edge part 23a. The overhanging locking portion 23 is formed with an oval locking hole 24 whose peripheral edge portion of the overhang is edged by a thickened edge 24a on the overhanging tip side.
In addition, the said hollow dome part 17 is also a part required in order to form the said spout 13a, when the bag container 10 is manufactured by blow molding.

  According to the bag container 10 of the present embodiment, the operation of opening the spout can be smoothly performed by picking the knob piece 18 provided in the spout forming part 13 by hand and pulling it upward.

That is, according to the present embodiment, the cut-out portion 16 is formed with the flat dome portion 17 having a hollow inside, and the knob piece 18 that functions as an opening knob portion is provided in the above-described manner. For example, when the finger is locked in the locking hole 24 and the knob piece 18 is pulled up to perform the operation of breaking the easily breakable portion 15 to form the opening, the dome portion 17 has a non-flat shape. It is hard to be deformed as compared with a thing, and since extension of dome part 17 grade is prevented, easily breakable part 15 can be broken easily and smoothly.
Further, according to the present embodiment, a liquid pool is unlikely to be generated inside the flat dome portion 17 of the planned excision portion 16. Therefore, for example, when the bag container 10 is used as a refill container, the process from filling the contents into the container until the consumer purchases the container and breaks the easily breakable portion of the spout. The contents can be prevented from staying in the scheduled cutting portion 16 of the outlet forming portion, and when the easily breakable portion is broken and the spout is opened, the contents remaining in the planned cutting portion 16 are scattered around. Inconvenience such as doing can be prevented.
Furthermore, the continuous base 22a having the hollow portion 22b is provided at the portion of the joint base end portion 22 that is continuous with the upper surface of the dome portion 17, thereby reducing the thickness of the continuous base 22a (same as B1 described above). The connecting portion with the dome portion 17 can be effectively reinforced without increasing the size.

As mentioned above, although one Embodiment of this invention was described, this invention can be variously changed without being limited to the said embodiment.
For example, the opening knob portion does not necessarily have to be a ring-shaped knob piece provided with a locking hole. For example, the opening knob portion is provided with concave and convex portions for preventing slippage on the front and back surfaces of the plate-like knob portion. May be. The opening knob may be a protrusion other than a plate or a bar-shaped knob. Further, the opening knob portion is not necessarily provided on the surface along the parting line by the molding die, and may be displaced from the surface along the parting line within a range in which the effect of the present invention can be obtained. That is, the unsealing knob portion may be provided on one side of the trunk portion 12 with respect to the central axis X of the spout forming portion 13. Here, in the case of a flat container (container of the present embodiment) having a wide front view and rear view and a narrow side view, the side surface of the body portion 12 can be visually observed when viewed from the side. In the case of a container having a non-flat shape such as a cylindrical container or a prismatic (quadrangular prism) container, it indicates an arbitrary body surface. That is, in the case of a container that is not flat, if the container has a shoulder portion that is large enough to be provided with a pressing knob portion, the opening knob portion has a holding knob portion with respect to the central axis of the spout forming portion. Any one direction (one direction) of the body portion provided with the above-described body portion that protrudes on one side and is adjacent to the spout forming portion on the side (direction) from which the opening knob portion protrudes In the shoulder portion, a bag container in which a presser knob portion is provided so as to protrude upwardly apart from the spout forming portion. Further, in the case of a container having a corner portion such as a prismatic container, the opening knob portion and the presser knob portion are disposed on the corner side (direction) of the prism column with respect to the central axis of the spout forming portion when viewed in plan. It can also be a provided bag container. The encapsulated contents may be other various contents having fluidity such as gel substances, granular substances, powdery substances, in addition to liquid agents such as hair detergents and whole body detergents. good.

  Further, the shape of the dome portion in plan view may be changed to a substantially circular shape, and may be a square, a rectangle, a rhombus, etc. with rounded corners. Further, when a part of the hollow dome portion 17 is pressed and crushed from both sides, it may be crushed so as to leave a gap to form a continuous base portion 22a having a hollow portion 22b as shown in FIG.

  Furthermore, the top surface portion 17a of the dome portion 17 does not necessarily have to be formed in a curved surface shape with the center portion slightly raised upward, and may be flat.

  Moreover, the opening knob part may be provided in the state connected with only the top | upper surface part of the said dome part. Further, the bag container of the present invention may not be self-supporting.

  The difference B1-B2 between the width B2 of the knob piece 18 and the width B1 of the outer peripheral portion of the connecting base 22 may be zero.

(A) is the front view of the bag container which concerns on preferable one Embodiment of this invention, (b) is the side view which looked at (a) from the right side. It is a principal part front view of the bag container which concerns on preferable one Embodiment of this invention. It is the III-III line expanded sectional view of Fig.1 (a). (A) is the enlarged plan view which looked at the cutting scheduled part of the bag container shown in FIG. 1 from upper direction, (b) is the YY sectional view taken on the line of FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Bag container 11 Container main body 12 Body trunk part 13 Outlet forming part 14 Bottom part 15 of container main body Easily rupture part 16 Planned excision part 17 Flat dome part 17a Top surface part 17b of dome part Outer part 18 of dome part Knob Piece (opening knob)
19 Base part of trunk part 20 Base part of spout forming part 21 Parting line 22 Joining base end part 23 of knob piece Overhanging locking part 24 of knob piece Locking hole P1 Placement surface P2 Surface on which an easily breakable part is formed X Center axis of spout forming part

Claims (4)

A container body made of a synthetic resin having a bottom portion and a barrel portion having a spout forming portion is formed by a mold, and a spout is formed by removing a portion to be cut by breaking the easily breakable portion of the spout forming portion. A bag container
The cut portion is formed with a flat dome having a hollow inside, and the unsealing knob portion protrudes from the central axis of the spout forming portion to one side of the barrel portion, and It is provided continuously with the top surface of the dome,
The bag container in which the part currently provided in the top | upper surface part of the said dome part in the said opening knob part becomes the continuous base part which has a cavity part.   2. The bag container according to claim 1, wherein the dome portion has a height in a protruding direction of the spout forming portion that is 20 to 80% of a minimum width in a direction orthogonal thereto.   The bag container according to claim 1 or 2, wherein the easily breakable portion has a narrow groove-like recess surrounding the spout forming portion in an annular shape. A container body made of a synthetic resin having a bottom portion and a barrel portion having a spout forming portion is formed by a mold, and a spout is formed by removing a portion to be cut by breaking the easily breakable portion of the spout forming portion. A bag container
The cut portion is formed with a flat dome having a hollow inside, and the unsealing knob portion projects in one direction, one side of the barrel portion, with respect to the central axis of the spout forming portion. And it is provided in a state of being connected to the top surface portion of the dome portion,
The bag container in which the part currently provided in the top | upper surface part of the said dome part in the said opening knob part becomes the continuous base part which has a cavity part.

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