JP2007297125A - Packaging box and packaging structure using the same - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a packaging box and packaging structure using the same packaging box capable of dispensing with pasting of an auxiliary material such as an adhesive seal material and sufficiently preventing unexpected opening of a door member in a circulating process. <P>SOLUTION: The door member sticking out from a side wall to an adjacent side wall side and oscillating at a horizontal plane as the fulcrum of an edge of the side wall is arranged on an upper end of one side wall 1 of the box 6, and the adjacent side wall 1 is arranged by overlapping it on the outside of a door member 7. A zone 8 capable of being cut off, which subsequently permits oscillation of the door member 7, is arranged on an overlapped section with the door member 7 of the adjacent side wall 1, and a non-cutting forming zone 9a is arranged on a projected section 9 suspended on the outer surface of the door member 7. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  This invention contains a packaging box made of paper or plastic, in particular, a soft packaging bag with a non-return dispensing nozzle that fills and packs liquids, liquids, etc. Easy and reliable packaging of non-returning nozzles into the box after finishing dispensing, making it easy to perform multiple times of dispensing work from the non-ejecting nozzle. The present invention relates to a box and a packaging structure using the box.

Various box cartons such as milk packs and fruit juice packs are widely used as box-like containers used for pouring filled and packaged liquid packages multiple times.
Paper cartons are used as packaging containers for packages with a volume of about 100 to 3000 ml, and are easier to handle than glass bottles, plastic bottles, cans, etc. There is an advantage that the floor area efficiency is higher than various bottles, cans and the like having a circular outer contour shape (Patent Document 1).
Japanese Utility Model Publication No. 6-81927

  However, in the production of this type of paper carton that directly fills and packages the packaged goods, it is essential to use 100% virgin parb and there is a problem that waste paper cannot be used. When opening a paper carton that has a roof shape on the top, in addition to having the trouble of having to peel off the fusion-bonded portion of the resin material at the top of the roof shape with your fingers, open it properly. There is often a problem that it cannot be performed, and further, it is impossible to sufficiently close the opening once opened.

  On the other hand, the brick-type paper carton with a flat top part is still troublesome at the time of opening the fused end part bent to the side wall side with scissors, but the opening as expected by the cutting is still possible. It is possible to reliably perform the process, and it is possible to close the opened opening by bending the fusion-bonded portion at the top toward the side wall.

  However, in this brick type paper carton, in many cases, the filling height of the package and the opening height are quite close, so that the package is not intended especially for the first dispensing. There was a problem that there was a high possibility of flowing down in the direction.

  Therefore, the applicant has first solved the problem of the conventional paper carton, particularly the packaging structure, a soft packaging bag that exhibits a filling and packaging function, and a fixed formability, etc. By separating the function from the packaging box, the box can be made of used paper, and the box can be opened easily and reliably as expected without removing the hassle of opening the box. In addition, a packaging box and a packaging structure using the packaging box that make it easy to specify the outflow direction of the packaged product are also provided. Proposed as Application No. 2004-351321.

  The invention of the packaging box according to the applicant's prior application is that the paper or plastic box having a hexahedral shape is rocked in the horizontal plane with the corner of the side wall as a fulcrum at the upper end of one side wall. A door member that moves and fits into an opening provided at the upper end of the side wall is provided, and a protrusion that engages with the outer surface of the door member is provided. A tongue piece that protrudes to the inside of the body is provided, and the tongue piece has a length such that the tip of the tongue piece contacts the inner surface of one side wall, for example, in a downward posture at a position below the protrusion.

In this packaging box, at the upper end of one side wall of a paper or plastic box, the door member is horizontally oscillated and displaced so that it is separated from the opening at the upper end of the side wall, The side wall opening can be opened and closed between, for example, a closed position where the door member just fits. At the closed position of the door member, the door member and By engaging the engaging protrusion with the outer surface of the door member by elastic deformation of at least one of the engaging protrusions on the side wall side, the door member can be reliably restrained at the closed position.
On the other hand, the door member is opened by pressing and deforming a portion of the side wall in the vicinity of the hooking protrusion with a finger, and elastically deforming at least one of the protrusion and the door member, to the inside of the door of the protrusion. And then the door member can be opened by placing a finger on it.

  Therefore, according to this, opening of the door member, and hence opening of the box body can be easily performed as expected without using any tools, and the opening of the door member can be reliably closed. Can be done.

  In addition, the packaging box functions to assist in the tilting and pouring operation of the soft packaging bag that is filled and packaged and stored in the package, and that provides tiltability. Since the packaging material is not directly filled and packaged, waste paper can be used for the box.

  Furthermore, in this packaging box, since the non-return dispensing nozzle of the packaging bag is joined to the inner surface side of the door member, it is always possible to easily identify the outflow direction of the package from the opening provided in the nozzle. It is possible to reliably flow down the package to the intended position regardless of the amount of the package.

  This invention is a further improvement of the above-mentioned invention according to the prior application of the applicant. In the above-mentioned prior invention, an opening that allows the door member to swing open and close is provided on one side wall of the packaging box. Since it is formed in advance, it prevents the door member from unintentionally swinging during the distribution process of the product until the product stored therein reaches the end user's hand. For this purpose, the door member was constrained to the side wall, and the adhesive seal portion for closing the opening was required to be adhered from the outer surface of the door member to the outer surface of the side wall, whereas this invention By eliminating the need for adhering auxiliary materials such as adhesive seal materials, and by sufficiently preventing the unexpected opening of door members during the distribution process, reducing the number of steps for manufacturing packaging structures and packaging Packaging box that can reduce the cost of the structure and its It is intended to provide a gastric packaging structure.

  The packaging box according to the present invention is a paper or plastic box having a hexahedron shape, and protrudes from the side wall to the adjacent side wall at the upper end of one side wall. A door member that swings inside is provided, and an adjacent side wall is disposed so as to overlap the outside of the door member. An allowable cutout area that has been processed to facilitate cutting is provided, while an uncutting area is provided for the convex part that engages the outer surface of the door member and restricts the unexpected opening displacement of the door member. It is a thing.

Here, the cutable area is preferably a surrounding area of an adjacent side wall adjacent to one side wall and a cutting guide rod made of perforated holes or the like, and this cuttable area is a door. It is preferable to join the outer surface of the member by adhesion or the like.
Preferably, the adjacent side wall is adjacent to the side of the cuttable area, and a formation area thereof is provided which is processed to facilitate the formation of the indentation deformed portion. In this case, more preferably, the formation region of the indentation deforming portion is allowed to be smoothly and easily separated from the adjacent side wall of the indentation deforming portion, for example, from a hole formed in a perforated shape. It is divided by a tearing guide rod.

  More preferably, in such a packaging box, a constraining piece that protrudes from the top side of the side wall that faces the adjacent side wall, is bent inside the box, and can be contacted on the lower surface of the packaging bag stored in the box is provided. The restraint piece has a protruding length at which the front end engages with the inner surface of the adjacent side wall in a downward posture. In this case, more preferably, the constraining piece has a protruding length that engages within 10 mm above and below it, including the lowermost edge position of the cuttable area, with the tip of the restraining piece on the inner surface of the adjacent side wall. .

In such a packaging box, at least one of a plurality of bent pieces that are formed to project from the top and bottom sides of the side wall and are overlapped and joined to each other among the plurality of folded pieces constituting each of the top and bottom walls. It is preferable to provide a tear guide rod that can be formed, for example, by a thin-walled portion, a perforated hole, or the like on the protruding base of the bent piece.
Here, when three or more pieces of folded pieces are overlapped and joined, it is preferable to provide a tear guide rod on the protruding base of two or more pieces of folded pieces.
More preferably, the at least one tear guide rod is provided with a curved portion or a bent portion that protrudes into the side wall side.
Also preferably, at least one packaging bag joint, for example, hot melt or other gluing joint, for positioning and holding the packaging bag, which will be described later, on the inner surface of the door member and two side walls sequentially adjacent to the fulcrum side thereof Provide a part.

  A packaging structure according to the present invention uses any of the packaging boxes described above, which includes a restraining piece, and includes a flat non-return dispensing nozzle with a sealed tip, and an upper end of a soft packaging bag body. Store the packaging bag that is provided in the packaging bag body, either in the packaging bag body, or by fusion-bonding to the packaging bag body, in the protruding position to the side of the packaging bag. The opening position is attached to the inner surface side of the door member so that the opening position protrudes forward from the front edge of the door member, and the restraint piece is bent to the inside of the box.

Here, preferably, the base portion of the non-return dispensing nozzle or the front end side portion thereof is positioned in correspondence with the swing fulcrum of the door member.
Preferably, the upper end portion of the packaging bag body is joined to the inner surface of each of the upper end portions of the door member and the two side walls sequentially adjacent to the fulcrum side thereof.
And when such a packaging structure is used, a packaging bag is filled with liquid or other articles to be packaged. By the way, it is preferable to bring the lower surface of the restraining piece into contact with the packaging bag body in a downwardly inclined posture at the time of use, for example, when the packaging box and the packaging bag are opened at the initial stage.

  In the packaging box according to the present invention, when the door member protruding from one side wall of the box body is oscillated and displaced, for example, in a horizontal plane, the door member is provided on the adjacent side wall prior to the outer side of the door member. The door member can be opened only by cutting the area where it can be cut to make it easy to cut. It is not necessary to provide special opening restraining means such as adhesive seal material to prevent the product, and the door is opened during the distribution process until the packaging box and thus the packaged product reaches the end user's hand. The risk of displacement can be reliably removed.

  Further, in this packaging box, the cutable area is cut out to allow the rocking displacement of the door member, and the convex part of the convex part left uncut under the action of the uncut forming area is the door member. The door member can be sufficiently restrained at its closed position, while the intentional opening of the door member is as described above for the packaging box according to the applicant's prior application. Next, by pressing and deforming the vicinity of the convex portion formed on the adjacent side wall with a finger and elastically deforming at least one of the convex portion and the door member, the convex portion enters the inside of the door member. Can be tolerated.

Note that the same applies to the edge of the opening formed in the adjacent side wall where the cutable area is cut out in the door member, instead of forming a convex portion on the adjacent side wall on the outer surface of the door member. Although it can also be realized by providing a convex portion that engages with the inner surface of the adjacent side wall, in this case, there are many disadvantages that the location of the convex portion or the like cannot be visually observed from the outside of the box.
By the way, the other basic actions or effects of the packaging box are the same as those described above for the invention according to the prior application of the applicant.

  In such a packaging box, when the cuttable area is the surrounding area of the adjacent side wall to the adjacent side edge to the one side wall and the cut-out guide rod made of perforated holes and the like, the packaging In addition to facilitating processing for the bag box and facilitating the production of the packaging box, the excisable area can be cut smoothly and easily.

Here, when the cuttable area is joined to the outer surface of the door member, the cuttable area after excision can function as a reinforcing member for the door member, and the cuttable area after excision can be It is possible to save time and effort for disposal.
Also, here, in the case where a formation region of the indentation deformed portion is provided adjacent to the side wall of the adjacent side wall and processed to facilitate the formation of the indentation deformed portion, the possible cutout region Prior to excision, it is possible to easily form the indentation deformed portion on the adjacent side wall, and accordingly, it is possible to grasp the cuttable area with the fingers through the indented deformable portion, and in turn, to cut it out. It is easy to excise the area.

  And these things are defined by dividing the formation area of the indentation deformed portion with a tear guide rod made of a perforated hole or the like that allows the indentation deformed portion to be locally separated from the adjacent side wall. It is more effective when the deformable portion can be formed smoothly and easily.

  By the way, when at least the front-end | tip part of a door member is thickened, sufficient intensity | strength can be provided to a door member regardless of whether a cutable area is joined to the outer surface of the door member.

In the packaging box as described above, when the restraining piece provided on the side wall facing the adjacent side wall is brought into contact with the inner surface of the adjacent side wall in a downward posture, the packaged item is filled and packaged as will be described in detail later. A packaging bag that is not fixed or fixed to the packaging box when the packaged item is poured out through the check dispensing nozzle of the packaging bag under the tilt displacement of the packaging box containing the packaging bag. It is possible to effectively prevent the bottom side portion of the bag from slipping down to the opening position of the adjacent side wall, and as a result, the amount of the packaged material in the bag can be dispensed through the check dispensing nozzle. Regardless of how much, it can always be performed smoothly and reliably.
And this means that the constraining piece has its tip closed to the inner surface of the adjacent side wall in a downward posture, and the opening is closed by the bottom side portion of the packaging bag, and the packaging It is more effective when the possibility of containment of the package due to the folding of the bag itself is sufficiently removed, and this includes the lowermost edge position of the cut-out area and within 10 mm below it. This is more remarkable when the restraint piece is brought into contact with the inner surface of the side wall.
In the case where the restraining piece is brought into contact with the lower side of the lowermost edge over 10 mm, the restraining piece may be bent in the middle when the restraining piece is mechanically pushed in the storing posture of the packaging bag. There is a possibility that proper pressing cannot be performed due to the pressure on the package in the bag.
On the other hand, when the restraint piece is brought into contact with the upper side of the lowermost edge beyond 10 mm, it is difficult to make the restraint piece in a sufficiently downward posture, and there is a possibility that the resistance against the falling of the packaging bag becomes too small. is there.

In such a packaging box, for example, a perforated hole may be formed in at least one protruding base portion of the bent pieces that are formed to protrude from the top and bottom sides of the side wall and are overlapped and joined to each other. If a tear guide rod is provided, the box can be easily crushed into a flat plate with a small bulk by tearing the top and bottom walls along the tear guide rod leaving one side. Thereby, the occupied volume in the case of recycling etc. can be reduced advantageously.
In this case, at least one tear guide rod is provided with a curved portion or a bent portion that protrudes into the side wall side, and the curved portion or the bent portion functions as a finger hook portion, so that the top wall and the bottom The tearing of the wall can be further simplified.

  Further, in the case where a packaging bag joint portion that can be, for example, an adhesive layer, a pressure-sensitive adhesive layer, or the like is provided on the inner surface of the upper end portion of the two side walls sequentially adjacent to the door member and its fulcrum side, a box body The upper end of the packaging bag stored in the box is pressed against each of the joints, or pressed under heating, to prevent the packaging bag from slipping down to the bottom of the box, and the posture within the box Can be as intended.

  In the packaging structure according to the present invention, the portion of the check pouring nozzle attached to the inner surface of the door member on the tip side from the unsealing position is opened based on the cutting of the cutable area of the box. Below, for example, by excision by tearing with fingers and forming an opening in the pouring nozzle, an article to be packed filled and packaged in a packaging bag is appropriately passed through the opening based on the tilting operation of the packaging box. Can be poured out and stopped.

Here, when the packaging bag is tilted together with the packaging box so that the opening of the nozzle faces downward, the pouring nozzle made of a soft laminated film is used for the water head pressure of the package. Under the action, the front end opening is opened apart from each side of the front and back sides, allowing the packaged items to be dispensed as required.
When the packaged item is dispensed in this way, the flexible packaging bag body shrinks or collapses by the amount corresponding to the dispensed volume without sucking outside air as the packaged item is dispensed. Will be transformed.

On the other hand, after the required amount of items to be packaged is dispensed, the packaging bag and the packaging box are returned to their original standing posture to stop the dispensing, and at the same time as this dispensing is stopped, the dispensing nozzle The front and back films are brought into close contact with each other in at least the width direction, in other words, in the vertical direction under the intervention of the thin film of the object to be packaged, thereby reliably preventing the outside air from entering the packaging bag.
Therefore, in the packaging bag having the dispensing nozzle, the packaged items in the bag are sufficiently protected from contact with the outside air during and after the dispensing as well as before the dispensing of the packaged items. Thus, the contamination of the packaged items in the bag due to oxidation, external dust and the like is effectively prevented.

By the way, such close contact of the film on the front and back of the pouring nozzle here, in addition to returning the pouring nozzle to the original shape at the time of manufacture by releasing the pouring nozzle from the action of the hydraulic head pressure by the standing return of the packaging bag, When the packaged object in the dispensing nozzle returns to the inside of the packaging bag body, the front and back films are exposed to a reduced-pressure atmosphere and sucked negatively to each other. Such close contact is caused by the elastic restoring force inherent in the packaging bag body that is shrunk or crushed and deformed as the packaged material is poured from the packaging bag. On the basis of this, the inside is assisted by making it tend to be decompressed.
In this way, the tip opening of the packaging bag can be automatically sealed in close contact with the rising and returning of the packaging bag without any special operation on the dispensing nozzle, and the dispensing nozzle has an excellent check function. It can be demonstrated.

  In this case, the check dispensing nozzle is joined to the door member in such a position that its opening position, in other words, the opening formation position protrudes forward from the front edge of the door member. When stopping the pouring of packaged goods during operation, even if the packaged goods may hang down from the opening of the nozzle tip, the risk of damaging the packaging box can be removed sufficiently. .

After performing the required pouring of the article to be packaged as described above, the door member of the packaging box is closed so that it fits into the opening formed on the adjacent side wall based on excision of the cuttable area. The position is brought into engagement with the protrusion of the adjacent side wall on the outer surface of the door member, and the door member is held in the closed position.
Under such a closed posture of the door member, the non-return dispensing nozzle is positioned with its protruding base or intermediate portion in the protruding direction corresponding to the swinging fulcrum of the door member, for example, Since the films are bent at a substantially right angle, the adhesion between the films on the front and back of the pouring nozzle is further ensured. For this reason, in the closed state of the door member, entry of outside air or the like into the packaging bag is more sufficiently prevented, and even if the packaging box is accidentally laid down, it is covered. It is possible to effectively prevent unexpected leakage of the package.

  On the other hand, the re-pouring of the article to be packaged opens the door member of the packaging box by releasing the engagement with the engagement protrusion of the adjacent side wall and opens the packaging bag together with the packaging box. Thus, it can be performed by tilting, and the stop can also be performed in the same manner as described above. In this case as well, the dispensing nozzle exhibits an excellent check function against the ingress of outside air based on the automatic close sealing.

  For example, in the case where the packaged items in the bag are repeatedly dispensed in this way, it is necessary to increase the tilt angle of the packaging box every time it is dispensed. Although the bottom side portion of the bag itself also tends to slide and displace toward the opening side of the packaging box, the restraint piece bent and arranged inside the box is joined to the box or the like here. Since it functions to sufficiently prevent the displacement of the bottom side portion that is not, the in-bag package is smoothly poured out almost the entire amount.

  In such a packaging structure, the non-return dispensing nozzle is attached to the inner surface of the door member, for example, by locally fixing, so that the opening of the tip of the nozzle associated with the dispensing of the packaged object can be obtained. A sufficient separation displacement between the front and back films can be performed smoothly. In other words, when any one film of the pouring nozzle is fixed to the door member with an adhesive or the like over the entire width, it is impossible to secure a sufficiently large separation deformation of the film on the front and back of the pouring nozzle.

  Further, here, the upper end portion of the packaging bag main body is also joined to the inner surfaces of the two side walls that are sequentially adjacent to the fulcrum side of the door member, so that the orientation of the packaging bag in the packaging box can be changed. It can be made into a required thing without interfering with the pouring of the packaged goods from.

  By the way, the function as described above of the restraint piece can be more fully exhibited by placing the lower surface of the restraint piece in contact with the packaging bag body portion of the packaging bag filled and packaged.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 is a developed view showing an embodiment of a packaging box according to the present invention, and FIG. 2 is a perspective view showing an assembled state thereof.
This packaging box assembled into a hexahedron shape as a whole is shown in FIG. 1 from the four side walls 1, the respective bottom wall constituting bent pieces 2 protruding from the side walls and the top of the three side walls. A top wall constituting folding piece 3 provided so as to protrude upward, and a folding restraint piece 4 formed so as to protrude upward from the top side of the other side wall 1 in FIG. The phantom line in FIG. 1 shows the soft packaging bag 5 accommodated in the packaging box in a posture not filled with an article to be packaged.

  Here, the packaging box 6 made of paper or plastic and having an unfolded form as shown in FIG. 1 protrudes from the upper end of one side wall 1 to the adjacent side wall, with the side wall edge as a fulcrum. For example, a door member 7 that swings and displaces in a horizontal plane is provided, and an adjacent side wall 1 is disposed on the outside of the door member 7 as shown in FIG. A cutable area 8 having a shape and a size substantially corresponding to that of the door member 7 which allows the swinging displacement of the door member 7 later is provided in the overlapping portion of the door member 7, and preferably, this cutable area 8 is provided on the adjacent side wall. 1 is formed by a surrounding area of an adjacent side edge 8a to one side wall 1 and a cut-out guide rod 8b formed by a perforated hole, a thin portion, or the like.

  Accordingly, in this case, the unexpected opening displacement of the door member 7 in the distribution process of the product can be sufficiently prevented in the presence of the cuttable area 8 without the need for secondary materials, etc. The artificial opening displacement of the member 7 can be easily performed through the opening of the adjacent side wall 1 formed by the cutting by cutting the cutable area 8 as necessary.

  In this case, when the cuttable area 8 is joined to the outer surface of the door member 7 with an adhesive or the like, the cutout area 8 is cut from the adjacent side wall 1 when the packaging box 6 is opened by cutting the cuttable area 8. While it is possible to remove the trouble of discarding the cuttable area 8, the door member 7 can be advantageously reinforced by the cuttable area 8 that has been cut off.

  Further, here, the cutable area 8 to be excised later is formed in this way, and the protrusion 9 functions to prevent the unintentional opening displacement by engaging with the outer surface of the door member 7. The uncut formation area 9a is provided in a part of the previous cutting guide rod 8b. In this figure, in order to reduce the protruding amount of the convex portion 9, it is provided corresponding to the corner of the corner of the door member 7, but the convex portion 9 extends linearly of the door member 7. It is also possible to provide them corresponding to the portions.

  Here, it is preferable that the adjacent side wall 1 is adjacent to the side of the cutable area 8, and preferably includes a perforated hole or the like that allows local separation from the adjacent side wall portion. An indentation deformed portion forming area 10 is provided which is partitioned by the tear guide rod 10a. In addition, it is preferable that the edge part spaced apart from the said side edge 8a of such an indentation deformation | transformation part formation area 10 is complete | finished by the linear mountain-fold guide part 10b which consists of a thin part etc.

  Preferably, at least the front end portion of the door member 7 is made thick by, for example, bending and joining the front end tongue piece 7a shown in FIG. 1 to the inner surface side of the door member 7, thereby reducing the thickness of the box body material. A high strength is imparted to the door member 7.

  Here, as shown in FIG. 3, the folding restraint piece 4 protrudes from the top side of the side wall 1 facing the adjacent side wall 1, is bent to the inside of the box, and its tip 4 a is formed on the adjacent side wall 1. It has a protruding length that engages the inner surface in a downward posture. In this case, it is preferable that the projecting length is such that the inner surface of the adjacent side wall 1 is engaged with each other within the range of 10 mm above and below the lowermost edge position of the cutable area 8. .

  Further, here, one of the protruding bases of the two pieces to be overlapped and joined to each other among the bent pieces 2 for forming the bottom wall, which are formed to protrude from the bottom of the side wall 1, is composed of perforated holes in the figure. A tear guide rod 11 is provided, and preferably a curved portion 11a, for example, is provided in the center portion of the guide rod 11 in the extending direction so as to protrude into the side wall.

  On the other hand, on the top side of the side wall 1, among the protruding bent pieces 3, similar tear guide rods 12 are provided on the protruding base portions of the two pieces which are overlapped and joined to each other, and preferably at least one of them For example, a curved portion 12a is provided in the central portion of the guide rod 12 so as to protrude into the side wall.

  In the opening operation of the packaging box 6 having such a configuration and assembled as shown in FIG. 2, first, the pushing deformation portion forming area 10 of the adjacent side wall 1 is pushed with a finger, and the pushing deformation is performed. The part forming area 10 is separated locally from the adjacent side wall portion by a pair of tearing guide rods 10a, and also separated from the cuttable area 8, and the forming area 10 is shown in FIG. As shown in FIG. 4, the mountain break guide portion 10b is used as a boundary to bend the box 6 to form an indentation deformed portion.

Next, the cutable area 8 is grasped with a finger through the opening formed in the adjacent side wall 1 by the pushing deformation portion bent inward of the box 6 and cut out along the cut guide rod 8b.
As a result, the door member 7 is exposed to the outside as shown in FIG. 4 (b). Here, the door member 7 is still in the uncut formation region in such an exposed state of the door member 7. The projection 9 formed with 9a is maintained in the closed state by engaging with the outer surface of the door member.

As described above, after opening the packaging box itself, by pressing and deforming the convex portion 9 of the adjacent side wall 1, the engagement of the convex portion 9 to the door member 7 is released. The door member 7 can be rocked and displaced in the opening direction as shown in FIG.
The door member 7 once opened and closed can be closed by pressing the door member 7 to the inside of the box 6 and pushing the door member 7 to the inside of the hooking projection 9. According to this, the door member 7 is reliably held in the closed posture under the engagement of the convex portion 9.

  In such a packaging box 6, the thickness of the used paper material or the like was reduced, and it was excellent in sufficiently resisting the deformation of the soft packaging bag filled and packaged with the packaged material to be stored in the box. In order to exhibit the formability, it is preferable to provide a plurality of reinforcing recesses 13 extending in the horizontal direction on each side wall 1 in at least the lower half of the box, as illustrated in FIGS.

Since the packaging box 6 as described above mainly functions so as to impart formability to the soft packaging bag, there is no need to laminate a resin material on the box, and therefore the packaging box 6 is recycled. In addition, since the used paper can be used for the packaging box itself, it can contribute to resource saving and cost can be reduced.
In addition, even after the packaging box 6 is opened, the door member 7 can be securely closed and opened as expected by bringing the door member 7 into and out of the engaging projection 9. Can be realized.

  By the way, regardless of whether the packaging box 6 is made of paper or plastic, when it is used for recycling, the bottom and top walls of the tear guide rods 11 and 12 are formed at the portions where the tear guide rods 11 and 12 are formed. By tearing each of them, the packaging box 6 can be folded into a plate shape as shown in FIG. 6, so that the occupied space can be kept sufficiently small.

FIG. 7 shows a state of a soft packaging bag that is used for filling and packaging of a packaged article and stored in a packaging box for use in the packaging structure according to the present invention before filling the packaged article. It is a top view shown by.
In the figure, reference numeral 21 denotes a non-return pouring nozzle. The pouring nozzle 21 is, for example, the upper end portion of the side fusion portion of the soft packaging bag body 22 and the outermost layer of the sealant layer on the inner surface thereof. The base end portion is fusion bonded by the sealant layer.

  Here, the pouring nozzle 21 includes a thermoplastic base film layer, for example, a biaxially stretched polyethylene terephthalate layer having a thickness of 5 to 20 μm, and respective sealant layers laminated on both sides of the base film layer, for example, 5 to 5 μm. A laminated film consisting of an unstretched polyethylene layer having a thickness of 80 μm, preferably 20 to 100 μm, disposed on each side of the front and back, that is, a laminated film having two identical front and back profiles, As shown in the figure, a single laminated film folded back on the front and back at the center is hatched in each figure, preferably by heat sealing, in each side part except the base side, in the mutually facing posture of the inner surface side sealant layer. It can be configured by fusing together.

  In the figure, reference numeral 23 denotes a tear-opening scheduled position of the check pouring nozzle 21, which is formed in one of the fusion parts facing the width direction of the nozzle, in the figure in the vertical direction, and is a V-shaped bent part that replaces the tearing start flaw. The V-shaped bent portion 23 functions to facilitate tearing and removal of the nozzle tip portion including the tip fusion portion 24 of the dispensing nozzle 21. Here, the V-shaped bent portion 23 can also be formed in the fusion portion on the lower side of the figure.

Each of the two upper and lower fused portions 25 and 26 is located opposite the width direction of the nozzle and extends to the base end side of the pouring nozzle 21 in the drawing, from the position where the V-shaped bent portion 23 is formed. On the end side, it is preferable to extend from the V-shaped bent portion 23 so as to be inclined downwardly, and the interval between the fused portions 25 and 26 is V-shaped from the base end portion. It is preferable that this is gradually reduced gradually toward the V-shaped bent portion 23 until the formation position of the bent portion 23 is reached.
In the figure, reference numeral 27 denotes a chevron that is torn off and is formed so as to protrude downward from the front end portion of the nozzle 21 toward the lower side in the drawing and function to improve the liquid drainage of the package. Indicates the part.

  In such a pouring nozzle 21, the V-shaped bent portion 23, which is the tearing and unsealing position thereof, is a plan view shown in FIG. 7. It is preferable that the road is positioned at a part inclined downward. According to this, after the nozzle 21 is opened and the packaged article is poured out, the packaging bag is returned to the standing posture and the pouring is stopped. In this case, in particular, the liquid cutting property is improved under the action of the inclined fusion portion of the lower fusion portion 26 of the nozzle 21 and the angle-shaped projection 27, and the packaged object along the lower side surface of the nozzle 21 is improved. Dripping can be prevented more advantageously.

  The non-return dispensing nozzle 21 configured as described above is, simultaneously with the filling and packaging of the article to be packaged into the soft packaging bag body 22, or prior to the filling and packaging of the article to be packaged, as shown in FIG. For example, the sealant layer on the outer surface of the base end of the nozzle 21 is preferably fused by heat sealing at the inner surface of the packaging bag main body 22 at the fusion part between the sealant layers on the side of the packaging bag main body 22. It is made a part of the packaging bag by being bonded, and protrudes sideways from the upper end portion of the packaging bag body 22 in the figure. Here, the packaging bag main body 22 itself and the fused part between the packaging bag main body 22 and the dispensing nozzle 21 are indicated by hatching in the drawing.

  In order to prevent mutual sealing of the sealant layer on the inner surface of the nozzle during such fusion bonding of the outer surface of the base end portion of the nozzle 21 to the packaging bag body 22, the inner and outer surfaces of the nozzle 21. It is effective to make the melting points of the respective sealant layers different.

Here, it is preferable that the sealant layer forming the inner surface of the soft packaging bag body 22 is made of the same kind of resin material as the sealant layer on the outer surface of the nozzle in order to increase the fusion strength. Further, the base film layer of the packaging bag body can be made of the same type as that of the nozzle 21 and can be selected from various materials having required physical properties.
If the required physical properties of the packaging bag cannot be ensured with the base film layer alone, it is possible to interpose an aluminum foil or other intermediate layer between the sealant layer and the base film layer. It is.

  By the way, the non-return dispensing nozzle 21 can also be formed integrally with the packaging bag body itself, and according to this, the step of fusing and joining the nozzle 21 to the packaging bag body 22 can be eliminated.

  Such a packaging bag 5 may be in a full form as illustrated in FIG. 8 by filling and packaging the liquid article to be packed therein, preferably under deflation, but the flexible packaging bag itself. Is usually not self-supporting or fixed, so when transporting, storing, displaying, using, etc., an article to be packed into the aforementioned packaging box 6, for example, at a plurality of locations. It is preferable that the packaging bag is stored under fixing or adhering to give self-supporting property and formability.

FIG. 9 is a perspective view illustrating this. Here, one, for example, a hot-melt joint portion is provided on the inner surface of the door member 7 and the inner surface of the upper end portion of the two side walls 1 sequentially adjacent to the fulcrum side thereof. Packaging bag joints 14, 15, 16 can be provided, the upper part of the dispensing nozzle 21 can be locally joined to the joint 14, and the packaging bag body 22 can be joined to the joints 15, 16. The upper end portion of the packaging bag, preferably the upper heat seal portion, is joined to each other at intervals in the width direction of the packaging bag main body 22 so that the packaging bag 5 filled and packaged with an article to be packaged is raised in the packaging box. Make it possible to maintain posture and shape.
In this case, the lower end portion of the packaging bag 5 is seated on the bottom wall of the packaging box 6, and much of the weight in the bag is supported by the bottom wall.
By the way, in joining the packaging bag 5 to the inner surface of the packaging box 6 in this way, as shown by the phantom line in FIG. 5, the tearing opening position of the pouring nozzle 21, in other words, the V-shaped folding It is important that the formation position of the curved portion 23 is a posture protruding forward from the front end edge of the door member 7.

  In order to pour out the required amount of packaged goods packed and packaged from the packaging bag 5 thus housed in the packaging box, the packaging box 6 is opened as described above, and the door is opened. The member 7 is also opened as described above, resulting in an open state as shown in FIG. 5, and the non-return dispensing nozzle 21 of the packaging bag 5 at the upper side, as shown. From the V-shaped bent part 23 of the part, the portion on the nozzle tip side is removed by tearing, for example, with fingers, and the packaging bag 5 is opened.

  After the packaging bag 5 is opened in this way, for example, in a state where the packaging box 6 is lifted, it is tilted as shown in FIG. By the way, the material to be packaged in this case can be poured out by specifying the nozzle position by the door member 7 and visually by the dispensing nozzle 21 protruding from the side wall 1 of the box 6. Since the level of the article to be packaged in the bag is usually located substantially below the door member 7, the article to be packaged can always flow down to the intended position.

  In addition, when such an item to be packaged is dispensed, the front end opening of the dispensing nozzle 21 that is joined to the door member 7 and protrudes from the opening side wall 1 is turned upside down by the water head pressure of the packaged item in the bag. Therefore, the dispensing according to requirements is performed smoothly enough, and the flow rate by such dispensing is secured in accordance with the decrease in the package contents in the bag. This is done by increasing the tilt angle.

  By the way, the displacement of the bottom side portion of the packaging bag 5 toward the door member 7 caused by increasing the tilting angle of the packaging box 6 is downwardly directed to the inner surface of the adjacent side wall 1 as described above. Since the restraining piece 4 that is in contact with the packaging bag body 22 is brought into contact with the packaging bag main body 22 and is prevented from being displaced, it is sufficiently prevented. Will always be dispensed smoothly and reliably.

  Here, the soft packaging bag 5 undergoes shrinkage deformation or crushing deformation according to the volume of the dispensed amount when such an article to be packaged is dispensed, and therefore into the packaging bag accompanying the dispense. Thus, the outside air is sufficiently prevented from entering, and the in-bag package is effectively protected against the outside air.

On the other hand, after the required amount of articles to be packaged has been poured out, the box 6 is returned to the standing posture shown by the phantom line in the drawing to stop the pouring, and along with this, the tip opening of the nozzle 21 is opened. Provides automatic close contact.
Here, as described above, this close-contact of the pouring nozzle 21 is performed by releasing the pouring nozzle 21 from the hydraulic head pressure so that the laminated films on the front and back sides are interposed by the thin film of the packaged object. When the discharge nozzle 21 is restored to its original shape at the time of manufacture, and the packaged material in the discharge nozzle flows down into the packaging bag body 22, the front and back films are placed in a reduced-pressure atmosphere. In this case, the negative pressure is mutually adsorbed over the entire width direction. Such close contact is more reliably maintained based on the fact that the packaging bag body 22 that has been crushed and deformed has a tendency to reduce the pressure inside the packaging bag based on the inherent elastic restoring force.
Therefore, here, based on the close contact of the nozzle 21 at the same time as the dispensing is stopped and the continuous maintenance of the close contact, the packaged items in the bag are continuously protected from the outside air from the stop of the dispensing. You can also.

  Moreover, since the pouring of the article to be packaged from the non-return pouring nozzle 21 is performed through the front end opening of the nozzle 21 that protrudes from the front end edge of the door member 7, Does not adhere to the door member 7, and therefore, the adherend to be packaged does not travel down to the bottom of the box 6 when the box 6 rises up and down.

After completing the required pouring as described above, the door member 7 is in the closed posture as shown in FIG. 4 (b) in which the engaging projection 9 is engaged with the outer surface thereof as described above. As a result, the door member 7 is completely and surely closed. Preferably, the check pouring nozzle 21 is placed at the position corresponding to the swing fulcrum of the door member 7 and the object to be packaged is poured. From the exit position, for example, it is bent approximately 90 °.
Here, this bending of the non-return pouring nozzle 21 brings about further adhesion of the film on the front and back of the pouring nozzle 21, so that after the door member 7 is closed, the outside air or the like enters the packaging bag more. It is surely prevented, and leakage of the packaged item can be more sufficiently prevented against unexpected collapse of the packaging box 6.

It is an expanded view which shows embodiment of the packaging box. It is a perspective view which shows the assembly state of the packaging box. It is a figure which illustrates the return | turnback form of a tongue piece. It is a figure which illustrates the opening process of a packaging box. It is a perspective view which shows the open state of a door member. It is a top view which shows the folding state of the packaging box. It is a top view which shows a packaging bag. It is a perspective view which shows the filling packaging state of the to-be packaged object to a packaging bag. It is a perspective view which shows the example of formation of the packaging bag junction part to the inner surface of the packaging box. It is a side view which shows the example of the extraction of a to-be-packaged object.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Side wall 2 Bottom wall structure bending piece 3 Top wall structure bending piece 4 Folding restraint piece 5 Packaging bag 6 Packaging box 7 Door member 7a Tip tongue piece 8 Door member cutting area 8a Adjacent side edge 8b Cutting guide rod 9 Convex Part 9a Uncut formation area 10 Pushing deformation part formation area 10a Tear guide rod 10b Mountain break guide portions 11, 12 Tear guide rods 11a, 12a Curved portion 13 Reinforcing recesses 14, 15, 16 Packaging bag joint portion 21 Non-return pouring Nozzle 22 Packaging bag body 23 V-shaped bent portion 24 Tip fusion portion 25, 26 Fusion portion 27 Yamagata protrusion

Claims (12)

A paper or plastic box having a hexahedral shape is provided with a door member that protrudes from the side wall to the adjacent side wall and swings around the side wall edge as a fulcrum at the upper end of one side wall. Is disposed on the outside of the door member, and a cutable area is provided on the adjacent side wall where the door member overlaps with the door member. The packaging box which provides the uncut formation area of the convex part hooked on. The packaging box according to claim 1, wherein the cutable area is a surrounding area of the adjacent side wall adjacent to the one side wall and the cutting guide rod. The packaging box according to claim 1 or 2, wherein the cuttable area is joined to the outer surface of the door member. The packaging box according to any one of claims 1 to 3, wherein a formation area of the indentation deforming portion is provided adjacent to a side of the adjacent side wall of the cuttable area. The packaging box according to claim 4, wherein the formation region of the indentation deformable portion is partitioned by a tearing guide rod that allows the indentation deformable portion to be locally separated from the adjacent side wall. The packaging box according to claim 1, wherein at least a front end portion of the door member is thickened. Provided on the side wall opposite to the adjacent side wall is a constraining piece that protrudes from the top side and is bent inward of the box, and this constraining piece engages with the inner surface of the adjacent side wall in a downward posture. The packaging box according to any one of claims 1 to 6, wherein the packaging box is a length. The restraint piece has a protruding length that engages within 10 mm above and below the constraining piece, including the lowermost edge position of the cuttable area on the inner surface of the adjacent side wall. Packaging box. A packaging structure using the packaging box according to claim 7 or 8,
A flat non-return dispensing nozzle with a sealed tip is placed at the upper end of the soft packaging bag body in a protruding position to the side of the packaging bag. A packaging structure in which the dispensing nozzle is attached to the inner surface side of the door member such that the unsealing position protrudes forward from the leading edge of the door member, and the restraining piece is bent to the inside of the box. The packaging structure according to claim 9, wherein the upper end portion of the packaging bag body is joined to the inner surface of the door member and the upper end portions of the two side walls that are successively adjacent to the door member. The packaging structure according to claim 9 or 10, wherein a package is filled and packaged in a packaging bag. The packaging structure according to claim 11, wherein the lower surface of the restraining piece is brought into contact with the packaging bag body.

Images