JP2017114528A - Flexible packaging body - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a flexible packaging body at a low cost, capable of obtaining sufficient sealability with a simple structure, and having a resealing mechanism which can be easily operated.SOLUTION: A flexible packaging body having a storage part formed by sealing a peripheral edge of first and second side films, includes: an opening planned part; a first member that is formed of a plate-like elastic member including a bending part with a cross section shape to be bent, and which is attached so that the inside of the bending part faces the outside of the packaging body of the first side film near the opening planned part; and a second member that is formed of a plate-like elastic member, and which is attached to the other second side film from the outside of the packaging body. A first state where the second member is projected in a direction along the first member side and no gap between the first and second side films can be generated, and a second state where the second member is projected to the opposite side in the direction and the gap can be generated, are switched therebetween by reversing and deforming the second member with an external force.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a flexible package.

  As a packaging body for packaging contents such as liquids, viscous bodies, powders, and solids, a flexible packaging body formed by stacking films and sealing their peripheral portions is known.

  The flexible package is manufactured, for example, by inserting a folded bottom film between two side films from the crease side and sealing the peripheral edge between the films in contact with each other. In such a flexible packaging body, it is possible to make it self-supporting by spreading the bottom film and forming the two side films in a cylindrical shape at the bottom.

  As an example of such a resealable mechanism for a flexible package, a mechanism in which a spout having a spout and a cap that is screwed with the spout is provided in the opening is known. FIG. 8 (a) shows a flexible package including a resealable plug according to the prior art. Such a plug member is manufactured by injection molding with a mold, and is attached and sealed to the flexible package body using predetermined equipment. While the plug member manufactured in this manner can be resealed, since the amount of resin is large, the manufacturing cost tends to be high in terms of equipment, time, and material. In addition, since it is opened and closed with screws, it is necessary to operate with both hands. In particular, in the case of a soft package, it is difficult to apply torque for opening and closing. In addition, the structure is complicated, and there are many troubles such as partial loss, looseness, and overrun.

  As another example, there is known a mechanism that enables re-sealing by sandwiching an opening of the opened flexible package with a clip separate from the flexible package. FIG. 8B shows a flexible package including a reseal clip according to the prior art. While such a clip can be resealed, the amount of resin required for manufacture tends to increase. In addition, there are problems that operations with both hands are required at the time of opening and closing, and that the flexible packaging body has creases, which makes it difficult to seal with repeated opening and closing.

  Thus, a suitable resealing mechanism has not been sufficiently studied in the conventional flexible package.

  Therefore, an object of the present invention is to provide a flexible package having a simple structure and sufficient sealing performance and an easy-to-operate reseal mechanism at a low cost.

One aspect of the present invention for solving the above problems includes a plurality of films including at least a first side film and a second side film, and each peripheral portion of the plurality of films is sealed. A flexible packaging body having a storage part surrounded by the formed part, the opening planned part provided at a part of the end part of the storage part facing the first side film and the second side film; It is made of a plate-like elastic member including a curved portion having a curved cross-sectional shape, and the inner side of the curved portion is at a position covering a line dividing the storage portion into a portion including the planned opening portion and another portion. A first member attached to one of the side film and the second side film so as to face the outside of the flexible package, and a plate-like elastic member, and the first side film and the second side film And a second member attached from the outside of the flexible packaging body, the second member protruding in a direction along the first member side, and between the first side film and the second side film A first state in which no gap is formed in the second state, and a second state in which a gap is formed between the first side film and the second side film that protrudes in the opposite direction of the direction. It is a flexible packaging body that can be switched by reversing and deforming with a force from the side.
It is.

  According to the present invention, it is possible to provide a flexible package having a resealing mechanism that has a simple structure and sufficient sealing performance and is easy to operate.

The top view of the flexible package which concerns on one Embodiment of this invention The figure which shows the reseal part which concerns on one Embodiment of this invention The figure which shows the reseal part which concerns on one Embodiment of this invention Sectional drawing which shows the mode of opening of the reseal part which concerns on one Embodiment of this invention Sectional drawing which shows the state of the reseal of the reseal part which concerns on one Embodiment of this invention The top view of the flexible package which concerns on one Embodiment of this invention Sectional drawing which shows the reseal part which concerns on the Example of this invention The figure which shows the resealing means of the flexible package which concerns on a prior art

(First embodiment)
FIG. 1 shows a plan view of a flexible package 100 according to the present embodiment. The flexible package 100 includes a first side film 101, a second side film 102, and a bottom film 103 inserted from the crease side in a folded state with a predetermined insertion length therebetween. They are formed together. The peripheral portion between these films in contact with each other except for the portion for injecting the contents, and after filling the contents, the above portions are sealed and sealed to store the contents 105. Is formed. The contents are not particularly limited, and are liquids, viscous bodies, powders, solids, and the like.

  As the material of each film, for example, a laminate including resin or aluminum and having a certain rigidity can be used. As an example of the laminate, a laminate including polyethylene terephthalate, aluminum, nylon, and polyethylene can be given.

  In addition, the flexible package 100 is provided with an extraction portion 104 that is an opening planned portion where an opening is planned for the extraction of the contents. As an example, as shown in FIG. 1, the dispensing portion 104 has a nozzle shape so as to be easily poured, and is formed on the upper side end. By cutting off the tip of the dispensing part 104, an opening is formed and the storage part 105 of the flexible package 100 is opened. In order to facilitate cutting, a notch serving as a trigger may be provided at the outer edge, or a half cut may be provided along the cutting line. Reseal parts 110 are provided in a linear shape that divides the flexible package 100 into a portion including the extraction portion 104 and other portions. As an example, a part of the flexible package 100 is narrowed in the vicinity of the pouring part 104, and a constricted part 106 is formed as a flow path for contents by forming a constricted shape, and the reseal part 110 is attached to the constricted part 106. It is done.

  The details of the reseal part 110 will be described with reference to FIG. FIG. 2A shows a plan view of the reseal part 110 attached to the flexible package 100, and FIG. 2B shows a cross-sectional view along the line A-A '. The reseal part 110 includes a first member 120 and a second member 130. As an example, the first member 120 is attached to the constricted portion 106 of the flexible package 100 from the outside of the first side film 101. The second member 130 is attached from the outside of the second side film 102 so as to face the first member 120.

  3A and 3B show a side view and a plan view of the first member 120 and the second member 130, respectively. The first member 120 and the second member 130 are band-shaped members made of an elastic material. The first member 120 has a dogleg-shaped side shape with a center portion curved when no load is applied. In the vicinity of both ends of the first member 120 and the second member 130 in the length direction (left and right direction on the paper surface), a weakening line 121 and a weakening line 131 that make each part easy to be bent extend in the width direction (up and down direction on the paper surface). Is formed. A weakening line 132 is further formed at the center in the length direction of the second member 130. Each weakening line is formed at a depth that does not reach from the front surface to the back surface. Each weakening line may be an unbroken linear groove or a perforated line. As the material, a material having a large elastic limit can be used. For example, a thermoplastic resin, a metal, or the like can be suitably used. For molding, for example, vacuum molding, injection molding, extrusion molding, thermoforming, punching, or the like can be used depending on the material.

  The end portions of the first member 120 and the second member 130 may be connected and fixed, and the method is such as welding, bonding using a hot-melt adhesive or the like, fixing by boss pins and boss holes, or the like. be able to.

  Alternatively, as shown in FIG. 3C, the first member 120 and the second member 130 may be manufactured integrally by connecting end portions in advance. In this case, a weakening line 140 for bending when attaching to the constricted portion 106 may be formed at the connection location.

  Next, the usage method of the reseal part 110 is demonstrated. In the following description, it is assumed that the leading end of the dispensing unit 104 has already been cut and the flexible pouch 100 has been opened. 4 and 5 are sectional views of the constricted portion 106 including the reseal part 110.

  First, a method for resealing the storage unit 105 using the reseal part 110 will be described with reference to FIG. FIG. 4A shows the reseal part 110 in a resealed state. The first member 120 is attached so that the bent portion protrudes outward from the flexible pouch 100, and in the re-sealed state, the second member 130 is weakened 132 along the first member 120. Therefore, there is no gap between the first side film 101 and the second side film 102. In this state, the central portion of the first member 120 is loaded in the direction of the second member 130 ((a) in FIG. 4). As a result, the bent first member 120 extends. Along with this, the first side film 101, the second side film 102, and the second member 130 also extend in the same direction ((b) of FIG. 4). When further weighting is continued, the bending direction of the second member 130 is reversed at the weakening line 132, and the second member 130 is inverted and deformed so as to protrude in the opposite direction to the first member 120 ((c) in FIG. 4). . When the load on the first member 120 is stopped at the stage where the second member 130 is reversely deformed, the first member 120 returns to a shape bent in the direction opposite to the second member 130 due to elasticity. As a result, the first member 120 and the second member 130 are bent in directions opposite to each other, and a gap is generated. In this state, a gap is generated between the first side film 101 and the second side film 102, or the first side film 101 and the second side film 102 are separated from each other as the contents are poured out. A path is formed and the storage portion 105 can be re-sealed ((d) in FIG. 4).

  The first member 120 and the first side film 101 may be bonded, and the second member 130 and the second side film 102 may be bonded. As an adhesion method, a method such as welding or adhesion using a hot-melt pressure-sensitive adhesive can be used. The adhesion range may be a part of the opposing surface or the entire surface. Accordingly, when a gap is generated between the first member 120 and the second member 130, the first side film 101 and the second side film 102 are immediately separated from each other, so that the flow path can be formed more reliably. .

  Next, a method for resealing the re-sealed storage unit 105 will be described with reference to FIG. FIG. 5A shows the resealable part 110 in the resume seal state. The second resealing part 130 is weighted in the direction of the first part 120 ((a) of FIG. 5). As a result, the second part 130 that protrudes and bends in the opposite direction to the first part 120 extends. Along with this, the first side film 101, the second side film 102, and the first component 120 also extend in the same direction ((b) of FIG. 5). When the load is further continued, the bending direction of the second member 130 is reversed at the weakening line 132, and the second member 130 is reversed and deformed so as to protrude in the direction of the first member 120 ((c) in FIG. 5). As a result, the second member 130 is in a state in which no gap is formed between the first side film 101 and the second side film 102 along the first member 120 side, and the storage unit 105 is resealed. ((D) of FIG. 5).

  As described above, when the resealing part 110 is used, the resealing / resealing operation can be performed only by applying a weight to the first member 120 or the second member 130. For example, since the weighting can be performed with one finger, the resealing / resealing operation is very easy.

(Second Embodiment)
FIG. 6 shows a flexible package 200 according to the second embodiment. The pouring part 104 of the flexible package 200 is provided at the corner of the rectangular side film, and the tip of the pouring part 104 can be cut out using a notch provided at the outer edge. In the flexible package 200, the constricted portion 106 is not formed unlike the flexible package 100, and the resealable part 110 is in the vicinity of the pouring portion 104 so as to straddle one side and the upper side of the flexible package 100. It attaches on the line which divides the vicinity of the extraction | pouring part 104 and other parts. Moreover, the resealable part 110 can be used not only for the self-supporting package having the bottom film as described above but also for a four-sided bag having no bottom film.

  The following reseal parts 110 were manufactured and evaluated for sealing performance and operability.

  The resealable part 110 was manufactured in the shape shown in FIG. 7A using a polyethylene terephthalate sheet. That is, the first member 120 and the second member 130 are integrally molded, and the first member 120 is formed with a length of 10 mm at both ends of a dog-shaped bent surface having a distance of 40 mm between both ends and a height of 10 mm. Each of the end portions was formed in a shape provided. In addition, the second member 130 is formed in a strip shape having a length that can be formed so as to overlap the first member 120. The widths of the first member 120 and the second member were both 20 mm. Moreover, each weakening line 121, 131, 132, 140 was formed by the perforation (joint 1mm, cut 1mm).

  As shown in FIG. 7B, after applying the hot melt adhesive material to the application position 150 at the substantially central portion of each of the first member 120 and the second member 130, the reseal part 110 is weakened. The resealable part 110 was attached to the flexible package 100 by folding the constricted portion 106 from both sides by folding it from 143 to half. The hot-melt adhesive material was applied also to the application positions 151 of the ends that are not on the connection location side of the first member 120 and the second member 130, and the ends were bonded together.

  The tip of the extraction part 104 of the manufactured flexible package 100 was cut off, and the storage part 105 was sealed with the reseal part 110. Thereafter, it was confirmed whether or not water leakage occurred from the resealable part 110 in a state where the flexible package 100 was laid down. As a result, water leakage did not occur and it was confirmed that there was sufficient sealing performance.

  Further, it was evaluated whether the re-sealing part 110 can easily open and reseal the storage portion 105 with one hand. As a result, it was confirmed that opening and resealing can be easily performed even with one hand.

  As described above, according to the present invention, since the resealable part can be opened and resealed by a simple operation with one hand, the package can be easily resealed and released.

  Moreover, since the reseal part presses the film near an opening part over a fixed area, it can be resealed reliably.

  Moreover, since the reseal part is formed by one part at the minimum, manufacturing costs, such as material, a metal mold | die, time, and attachment, can be suppressed.

  Moreover, since it is not necessary to bend the pouring part at the time of re-sealing, the contents do not ooze and the outer surface is not easily contaminated.

  In addition, since the reseal parts are not involved in the initial sealing or initial opening, it is not necessary to provide a function for tamper evidence and the design is easy.

  In addition, since the resealable part can be attached even after the contents are filled, even if the contents are subjected to retort processing, they can be used without worrying about thermal deformation.

  Further, since the reseal parts do not directly touch the contents, the contents are not limited by the material of the reseal parts.

  In addition, the reseal parts have a certain rigidity and are attached near the outlet of the flexible package to maintain the shape of the outlet and the surrounding package. Smooth pouring can be performed without bending. . Therefore, even when a flexible material is used for the flexible package 100, it is not necessary to devise the shape of the spout or to provide a structure that stabilizes the dispensing such as a check valve or embossing. A simple spout structure as shown in FIG.

  Note that the present embodiment may be modified as appropriate. Resealable parts can be elastically inverted and deformed between a portion having a cross-sectional shape that is curved when unloaded, and a portion that is overlapped with the portion and is in contact with and spaced from the portion. The shape and size are not limited, and for example, it is not necessary to provide a weakening line and can be implemented in various ways. is there.

  The present invention is useful for flexible packaging and the like.

DESCRIPTION OF SYMBOLS 100,200 Flexible packaging body 101 1st side film 102 2nd side film 103 Bottom film 104 Extraction part 105 Storage part 106 Constriction part 110,140 Reseal part 120 1st member 121,131,132,140 Weakness Wire 130 second member

Claims (2)

A flexible packaging having a plurality of films including at least a first side film and a second side film, each of the plurality of films being sealed at its peripheral edge, and having a storage part surrounded by the sealed part Body,
An opening planned portion provided at a portion of the storage portion where the first side film and the second side film face each other;
It is made of a plate-like elastic member including a curved portion having a curved cross-sectional shape, and the inside of the curved portion is at a position covering a line that divides the storage portion into a portion including the planned opening portion and another portion, A first member attached to one of the first side film and the second side film so as to face the outside of the flexible package;
A plate-like elastic member, including the second member attached to the other of the first side film and the second side film from the outside of the flexible package,
The first state in which the second member protrudes in the direction along the first member side and no gap is formed between the first side film and the second side film, and the opposite side of the direction Can be switched by reversing and deforming the second member with an external force, and a second state in which a gap may be generated between the first side film and the second side film. Flexible package.   The flexible packaging body according to claim 1, wherein the first member and the second member are integrally formed.