JP6716898B2 - Flexible packaging - Google Patents

Description

The present invention relates to a flexible package.

As a packaging body for packaging contents such as liquid, viscous body, powder, and solid, there is known a flexible packaging body formed by stacking films and sealing the peripheral portion thereof.

The flexible package is manufactured, for example, by inserting a half-folded bottom film between two side films from the fold side and sealing the peripheral portions between the films in contact with each other. In such a flexible package, it is possible to make it stand by expanding the bottom film and forming the two side films into a tubular shape at the bottom.

As an example of a resealable mechanism for such a flexible package, there is known one in which a spout and a spout having a cap screwed into the spout are provided at the opening (Nippon Closure Co., Ltd., trade name Unilock). Such a plug member is manufactured by injection molding with a mold, and is attached to the flexible package body and sealed using predetermined equipment, and since there is a large amount of resin, equipment, time and material aspects Manufacturing cost is high. Further, since the opening and closing is performed by a screw, it is necessary to operate with both hands, and particularly in the case of a soft package, it is difficult to apply a torque for opening and closing and it is difficult to handle. The structure is complicated and there are many problems such as partial loss, looseness, and overrun.

As another example, a snap mechanism is attached to the outer surface of the package with an adhesive, and the vicinity of the opening is bent and snap-fastened to maintain the bent state and then reseal (Eco Lean, product name Snapquick). It has been known. In such a mechanism, since the films are bent, it is difficult for the films to come into surface contact with each other in the vicinity of the sealing position, and it is difficult to sufficiently seal the films. In addition, the contents remaining in the folded-back portion inside the package may leak to the outside, and the package may be soiled. Moreover, the work of bending and snapping the snaps is complicated. Further, when resealing and unsealing are repeated, the adhesive force of the adhesive may be weakened and the snap mechanism may peel off.

As described above, in the conventional flexible packaging body, a suitable resealing mechanism has not been sufficiently studied.

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

One aspect of the present invention includes a plurality of films including at least a first side surface film and a second side surface film, and a seal portion in which each peripheral edge portion of the film is sealed and a portion surrounded by the seal portion are A flexible package serving as a storage part, which includes a planned opening part provided at a portion of the end part of the storage part where the first side film and the second side film face each other, and the storage part including a planned opening part. The flexible packaging body is attached to one side without sandwiching the flexible packaging body from the outside of the flexible packaging body at a position that covers the line that divides the portion and the other portion, and the two ends of the V-shaped member are overlapped. and a resealing parts two ends each other in a state of pyramidal side shape is locked with, resealing parts, forms the central portion protrudes into the first side film and a second side film side When, with the form of protruding to the opposite side, Ri can der irregularities reversed deformation, and that is biased by resilient to maintain its form in each embodiment, a flexible package.

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

The top view of the flexible package which concerns on one Embodiment of this invention. The figure which shows the resealing part which concerns on one Embodiment of this invention, and its manufacturing method. The figure which shows the attachment method to the flexible package of the resealing part which concerns on one Embodiment of this invention. The figure which shows the mode of resealing and opening of the flexible package which concerns on one Embodiment of this invention.

(Embodiment)
FIG. 1 shows a plan view of a flexible package 100 according to this embodiment. The flexible package 100 includes a first side film 101, a second side film 102, and a bottom film 103 inserted from the fold side in a folded state with a predetermined insertion length therebetween. Formed together. The peripheral portions between the films that are in contact with each other of these films are filled with the contents by sealing the peripheral portions excluding the portion for injecting the contents, and then the above-mentioned portions are sealed and sealed to store the contents. The part 105 is formed. The contents are liquids, viscous bodies, powders, solids, etc. and are not particularly limited.

As a 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 containing polyethylene terephthalate, aluminum, nylon and polyethylene can be mentioned.

Further, the flexible package 100 is provided with a pouring section 104 having an opening for pouring the contents. For example, as shown in FIG. 1, the pouring portion 104 has a nozzle shape and is formed at an upper portion of a side end so as to facilitate pouring. An opening is formed by cutting off the tip of the dispensing portion 104, and the flexible package 100 is opened. For easy cutting, a notch that triggers the outer edge may be provided, or a half cut may be provided along the cut line.

The resealing part 106 is attached to the pouring part 104. The resealable part 106 is attached in the vicinity of the opened position, and is attached from the outer surface of the flexible package 100 on a line that divides the storage part 105 into a part including the opened position and the other part. There is.

Details of the resealing part 106 will be described with reference to FIG. 2. As shown in the side view of FIG. 2A, the resealable part 106 can be deformed in a concavo-convex manner, and has at least a shape in which the central portion projects toward the flexible package 100 and a shape in which the central portion projects toward the opposite side. It can take two forms. The resealing part 106 has elasticity that maintains the shape in each form, and it is necessary to apply a constant force to deform between the forms. As the material of the resealing part 106, for example, elastic plastic, metal, paper or the like can be used. The resealing part 106 has a protrusion 107 for attachment to the main body of the flexible package 100, as will be described later. The resealable part 106 is, for example, a V-shaped member as shown in FIG. 2B, and two ends thereof are overlapped with each other as shown in FIG. It can be manufactured by forming a side surface and locking the ends together. Alternatively, instead of such deformation and fixing, as shown in (d) of FIG. 2, it may be manufactured by resin molding in advance into a cone side surface shape.

The resealing part 106 has protrusions 107 at both ends, for example. The protrusion 107 is integrally formed with the entire resealing part 106. The distance between the protrusions 107 is smaller in the straight-line distance D′ in the mortar shape than in the flat state (distance measured along the resealing part 106 in the mortar shape) D.

An example of a method of attaching the resealing part 106 will be described with reference to FIG. The resealable part is attached to the main body of the packaging body by engaging the hole 107 provided in the sealed portion of the body end portion of the flexible packaging body 100 and the projection 107 with the hole 108. As shown in FIG. 3A, the holes 108 are provided at a distance D described above in a state where the first side surface film 101 and the second side surface film 102 are flat. FIG. 3B is a schematic cross-sectional view taken along the line AB of FIG. As shown in FIG. 3B, the protrusion 107 is inserted into the hole 108, and as shown in the enlarged cross-sectional view of FIG. 3C, the tip of the protrusion 107 is subjected to a caulking process using heat or ultrasonic waves. Then, the reseal part 106 is fixed.

As shown in (d) of FIG. 3, the distance between the holes 108 after the fixing bends between the first side film 101 and the second side film 102 due to the attachment of the resealing part 106, and The distance is D'.

With reference to the cross-sectional view shown in FIG. 4, a state of resealing and pouring after the pouring part 104 is opened will be described. As shown in (a) of FIG. 4, in a state where the resealing part 106 has a shape in which the first side film 101 and the second side film 102 are convex, these films are oriented in the same direction. Pressed. Since the distance between the protrusions 107 and the distance between the holes 108 are the same distance D along the surface of the resealing part 106, these films are in surface contact with each other so that there is no play in the vicinity of the opening and they are not separated from each other. The re-sealing state is set. In the state in which the reseal part 106 is deformed and inverted to the form in which it is convex on the opposite side of the first side film 101 and the second side film 102, as shown in FIG. 4B or FIG. The pressure on these films is released, and the vicinity of the openings is separated from each other, or becomes separable when the contents pass, and the resealing is released. Further, in this state, the resealing part 106 has a function of partially maintaining the arc-shaped cross-sectional shape near the opening with respect to the weight of the content to be poured out and stabilizing the pouring out. After the pouring, the resealing part 106 is turned over again to return to the state shown in FIG. 4A, whereby the resealing state can be obtained.

In the present embodiment, since the resealable part can be deformed by a simple operation with one hand, it is possible to quickly apply and release the pressure in the vicinity of the opening, and easily reseal the package and It can be released.

Further, since the resealing part presses the film in the vicinity of the opening over a certain area, it can be reliably resealed.

Moreover, since the resealable part is formed by one part, it is possible to suppress the manufacturing cost such as material, mold, time, and mounting.

In addition, since the reseal parts do not intervene in the contents, they do not become a restriction in the sterilization process when filling the contents, and even in the initial sealing process after filling, part fitting leakage, welding leakage, seal edge laceration, etc. It is possible to avoid problems caused by resealing parts such as.

Further, since the re-sealing part is attached to the package body by the engagement of the protrusion with the hole of the package body, even if the re-sealing and unsealing are repeated, the re-sealing part is less likely to be detached as compared with the case of adhering with an adhesive or the like. ..

In addition, since it is not necessary to bend the pouring portion at the time of resealing, the contents do not seep out, and the outer surface is unlikely to become dirty.

Moreover, since the re-sealing part does not participate in the initial sealing and the initial opening, it is not necessary to add a function for tamper evidence, and the design is easy.

Moreover, since the resealable parts are easily separated, even after the use of materials makes it necessary to separate the resealable parts.

It should be noted that this embodiment may be appropriately modified and implemented. The resealing part may be manufactured by combining a plurality of members. Further, the shape and size are not limited as long as the opening can be resealed so that the vicinity thereof can be covered over substantially the entire width of the film material, and the planar shape can be variously performed such as an ellipse, a rectangle, and a circle. .. The resealing parts may be provided on both sides of the first side film and the second side film of the flexible package body. Further, the resealable part may be adhered to the flexible package body with an adhesive or a double-sided tape, or may be welded by heat sealing.

INDUSTRIAL APPLICABILITY The present invention is useful for flexible packages and the like.

100 flexible package 101 first side film 102 second side film 103 bottom film 104 spout part 105 storage part 106 resealing part 107 protrusion 108 hole

Claims (3)

A flexible structure including a plurality of films including at least a first side film and a second side film, and a seal part in which each peripheral edge of the film is sealed, and a part surrounded by the seal part is a storage part. A package,
A planned opening portion provided in a portion where the first side film and the second side film are opposed to each other at an end portion of the storage section;
The flexible packaging body is attached to one side without sandwiching the flexible packaging body from the outside of the flexible packaging body at a position that covers a line that divides the storage portion into a portion including the planned opening portion and another portion, and V And a reseal part in which the two ends of the character-shaped member are locked together in a state of a side surface of a cone in which the two ends are superposed,
The resealing part has a form in which the central portion protrudes into the first side film and the second side surface film side, with the form of protruding to the opposite side, Ri can der irregularities reversed deformation, and wherein that are biased by resilient to maintain its form in each embodiment, the flexible package. The flexible packaging body according to claim 1, wherein the resealable part has a locking projection, and the locking projection is engaged with a locking hole provided in the seal portion. When the locking projections and the locking holes are provided in pairs, the distance between the locking projections when the re-sealing part is flat and the flexible packaging body is flat The flexible wrapping body according to claim 2, wherein the distances between the locking holes are equal.

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