JP5392761B2 - Manufacturing method of flexible packaging bag having check function and uneven strip forming apparatus used therefor - Google Patents

Description

  This invention is composed of two laminated front and back soft plastic films, usually in a laminated structure. At the upper end of the packaging bag body that is constructed, it is provided so as to protrude to one side of the packaging bag, and it is partitioned by forming a vertical seal part, a horizontal seal part, etc. for the laminated film for packaging to form a filling and packaging space for the packaged items A method for producing a flexible packaging bag having a check function, which is provided with a concave or convex stripe or an irregular stripe on the inner surface in at least a part of the area to be used, and the irregular stripe used for carrying out the method The present invention relates to a forming apparatus.

Patent Documents 1 and 2 disclose a film-like non-return dispensing nozzle that exhibits a self-seal non-return function and a flexible packaging bag including such a film-like non-return dispensing nozzle.
This flexible packaging bag is used when liquid seasoning such as soy sauce and sauce, wine, sake, salad oil and other liquid packages to be deaerated, for example, by filling in liquid. The bag is not only in the packed state of the package, but also when the liquid package is dispensed from the film-type non-return dispensing nozzle and after the dispensing is stopped, Since it has a feature that it can prevent contact, according to this packaging bag, the packaged item in the bag is not fouled by dust contained in the outside air or oxidized by the outside air. It can be maintained as it is during filling and packaging for a long period of time.

  By the way, in this packaging bag, the film-like non-return dispensing nozzle exhibits a self-sealing function due to the close contact of the two front and back soft plastic films based on the wetness of the liquid package, and this self-sealing function However, if the non-returning nozzle exhibits a self-seal function, it will be necessary to transfer the degassed liquid package into the packaging bag. Due to the extraction without taking in outside air, the inner surface of the packaging bag body also corresponds to the extraction path portion of the package and the amount of the package to be extracted due to wetting by the package. In general, the contact area between the packaging bag body and the article to be packaged is also in a close contact state.

And according to these things, contact | adherence as mentioned above of a non-return dispensing nozzle and a packaging bag main-body part prevents the smooth outflow of the liquid to-be-packaged item in the subsequent pouring of the to-be-packaged item in a bag. I understood that there was a case.
Therefore, the applicant has proposed as Japanese Patent Application No. 2008-190642 a technique that makes the repeated dispensing of the liquid package always smooth.

  This is because the packaging bag body has a concavo-convex structure at least in the vicinity of the upper edge or the side edge on the film-like check-out nozzle side of the non-sealed portion of at least one of the laminated films for packaging on the front side and the back side. It is characterized by comprising a film.

JP 2005-15029 A JP-A-2005-59958

  The present invention provides a simple manufacturing method of a flexible packaging bag described in Japanese Patent Application No. 2008-190642, and an uneven strip forming apparatus having a simple structure used for carrying out the method, according to the prior application of the applicant. It is.

The manufacturing method of the flexible packaging bag having a check function according to the present invention is to seal and bond one or two half-folded packaging films on the front side and the back side in the central region of the width. Film-like non-return dispensing nozzle that is disposed so as to protrude from one side of the packaging bag body, for example, the upper end of the side, and in which the overlapping soft plastic films are in close contact with each other in the presence of liquid packaging In producing a flexible packaging bag having a check function,
For example, the sealant layer on the outer surface of the base end portion of the film-like non-return dispensing nozzle is applied to the sealant layer of the laminated film for packaging on one side of the laminated film that is continuously fed out at a constant speed. After fusion-bonding in a protruding posture from the side edge of the laminated film for packaging of the film check nozzle,
A film- like check in an area that contributes to a section of a packing space for packing a packaged laminated film in which a film-like non-return dispensing nozzle is fusion-bonded or a laminated film for packaging that is a separate leaf. One or more pieces having a required cross-sectional shape extending in the running direction of the laminated film for packaging or inclining with respect to the running direction in a portion of the dispensing nozzle that is less than half of the fusion-bonding side Are formed under an appropriate extending form such as a straight line or a curved line,
Next, both the front and back surfaces of the one or two packaging laminated films facing each other without fitting the uneven strips on which the sealant layers of the laminated films on the front side and the back side are formed. In each sealant layer of the side portion, continuous in the film running direction, a vertical seal portion passing through the fusion splicing portion of the non-return dispensing nozzle, and extending in the film width direction with an interval in the film running direction, That is, a so-called bottom seal portion and a transverse seal portion constituting at least one of the top seal portion are sequentially formed.
Here, when carrying out bag making of the packaging bag and filling and packaging of the liquid article to be packaged simultaneously, both the seal portions of the bottom seal portion and the top seal portion are sequentially formed.
On the other hand, when making a packaging bag that opens at either the bottom or the top, either the top seal or the bottom seal is formed by the lateral seal.

  The film-type non-return dispensing nozzle applied to such a manufacturing method is a peripheral portion excluding a portion serving as a base end side of the nozzle, except for a sealant layer on the opposing surface of two flat laminated soft plastic films overlapping each other. Thus, the distal end can be closed while the proximal end is opened, and the extraction passage is defined in the intermediate width portion.

  By the way, the required packaging bag is a sheet of laminated film with a film-like non-return pouring nozzle fused and bonded to one side, half-folded at the center in the width direction under the formation of irregularities. In addition, it can be manufactured by sequentially forming each of the vertical seal portion and the horizontal seal portion, and a single laminate for packaging in which a film-like check pouring nozzle is fusion bonded to one side portion. Separately from the film, the laminated film having the same laminated structure is continuously fed out and run at the same speed, and the two laminated films for packaging are preliminarily provided with necessary irregularities and the like. It is also possible to manufacture by forming each of the vertical seal portion and the horizontal seal portion in order under formation.

In the manufacturing method of the packaging bag as described above, one or more concave or convex strips, or the concave and convex strips can be used regardless of whether two laminated laminated films are used when one laminated laminated film is used. It can be formed on at least one of the laminated film for packaging on the front side and the back side.
Here, when forming the concavo-convex ridges or the like on the packaging film on each of the front side and the back side, the dents or ridges on the front side, or the ridges and ridges on the back side film, or In order to prevent unintentional fitting of the uneven stripes on the front and back sides of the product packaging bag, it is preferable that the uneven stripes extend in directions intersecting with each other in the bag-making state of the packaging bag.

By the way, in this invention, in the case where irregularities are formed on the front side portion or the back side portion, when making a bag using a single laminated film for packaging, filling of a packaged item is required. In the region that contributes to the division of the packaging space, a concave line, a convex line, or an uneven line is formed in a portion of the film-like non-return pouring nozzle that is below the half part on the fusion bonding side . According to this, when the liquid package is poured out from the film-like non-return dispensing nozzle, the unintentional close contact of the inner surface of the packaging bag main body in the vicinity of the non-return dispensing nozzle, etc. Therefore, it is possible to effectively prevent repetitive pouring of the liquid package from the packaging bag under a small formation area.
And this is a packaging bag, even in the case constituted by two sheets of laminated packaging films, also, the packaging bag to be produced, in the region that partitions the filling and packaging space of the articles to be packaged, the film-like Gyakutomechu in no event emanating partially forming a concave-convex like the vicinity of the nozzle is the same.

  Here, the formation of one or more concave strips or convex strips or concave and convex strips extending in the running direction of the packaging laminated film or in the direction inclined with respect to the running direction is provided with concave and convex strips that enter each other. It is preferable to pass the laminated film for packaging between a pair of heating rollers, in order to easily and quickly form the required irregularities and the like efficiently.

When forming one or more ridges or ridges, or ridges or stripes in the area of the laminated film for packaging on the front side and the back side that contributes to the section of the filling and packaging space of the package, When using a laminated film for packaging and when using two laminated films for packaging, each of the front side and the back side is provided between two pairs of heating rollers provided with concave and convex stripes that enter each other. It is preferable to continuously pass the laminated film for packaging in order to increase the forming work efficiency of the ridges and the like.
In this case, when forming a rugged strip or the like on each of the front surface portion and the back surface portion with a single laminated film for packaging, the two pairs of heating rollers are spaced apart from each other by a predetermined distance in the roller axial direction. It will be arranged. However, it is not essential that each pair of heating rollers be disposed on a common axis.

  At least the width dimension, the concavo-convex pitch, and the extending direction of the plurality of concavo-convex strips formed in the area contributing to the section of the filling and packaging space of the article to be packaged in the packaging film on each of the front surface side and the back surface side It is preferable to make one different from each other in the product packaging bag in order to prevent the unevenness on the front side and the unevenness on the back side and the like, and to prevent the inner surfaces of the front and back surfaces from sticking to each other.

  In the above-described method, more preferably, in the longitudinal seal portion, the sealant layer that is positioned on the inner surface of the packaging bag body and one outer surface of the base end portion on one side portion of the laminated film for packaging The sealant layer on the other outer surface of the film-like non-return dispensing nozzle that has been fusion-bonded is sealed and joined, thereby ensuring a reliable liquid-tight seal joining between the packaging bag body and the film-like non-return dispensing nozzle. Secure enough.

  Preferably, the sealant layers on the inner surface of the base end portion of the film-like non-return dispensing nozzle are temporarily sealed and joined to each other at the longitudinal seal portion to the dispensing passage at the intermediate width portion of the non-return dispensing nozzle. This prevents the unintended inflow of the article to be packaged and, consequently, the permanent deformation of the non-return dispensing nozzle caused by this inflow.

Further, the uneven strip forming apparatus of the present invention is used for carrying out any of the manufacturing methods described above, and a film-like non-return dispensing nozzle is preliminarily projected in a lateral direction on one side. A single laminated film that has been fused and run continuously at a constant speed, and is a half on the fusion-joined side of a film-like non-return dispensing nozzle in a region that contributes to the filling and packaging space of a packaged item. One or more concavo-convex ridges are provided so as to interpenetrate the opposing peripheral surfaces of a pair of heating rollers that are driven to rotate in opposite directions while sandwiching the portion below the portion in the thickness direction.
Here, the concave and convex stripes that enter each other can be endlessly continuous in an annular shape on the peripheral surface of the heating roller, and can extend spirally around the axis of the heating roller. it can. Further, the cross-sectional shape of the ridges can be a mountain shape, a square shape, a trapezoidal shape, a polygonal shape, an arc shape, or other required shapes.

In this apparatus, at least one half of the film-like non-return dispensing nozzle on the side of the fusion-bonding side sandwiching the central portion in the width direction of the single laminated film for packaging is sandwiched in the thickness direction to mutually It is also possible to provide one or more concave and convex strips that enter each other on the opposing peripheral surfaces of a pair of heating rollers that are rotationally driven in opposite directions.

In addition, each side portion of the single laminated film for packaging sandwiching the central portion in the width direction sandwiches the portion of the laminated film below the half portion on the fusion bonding side of the film-like non-return dispensing nozzle in the thickness direction. Each pair of heating rollers that are driven to rotate in opposite directions is arranged at intervals in the direction of the rotation axis, and one or more concavo-convex ridges are provided to enter the opposing peripheral surfaces of each pair of heating rollers. In this case, the projections and depressions formed on the opposing circumferential surfaces of the two pairs of heating rollers positioned at an interval in the rotation axis direction are arranged in the two pairs of heating rollers. It is possible to dispose asymmetrically with respect to the axis orthogonal line segment passing through the point in terms of position, cross-sectional shape, arrangement pitch, number, extending direction, etc. It is preferable for preventing unintentional fitting with the uneven portions on the side portion.

  By the way, the uneven ridges on the peripheral surface of the heating roller pair can be one or a plurality of annular endless ridges, or can be one or a plurality of spiral ridges, the latter In this case, one or a plurality of concave and convex stripes extending in a spiral shape in the same direction can be provided on the peripheral surfaces of the two pairs of heating rollers.

In the manufacturing method of the present invention, in particular, fusion bonding of a film-like non-return dispensing nozzle in a region that contributes to a section of a filling and packaging space of a package of a laminated film that is continuously fed out at a constant speed. By forming one or more ridges or ridges or projections or depressions extending in the running direction of the packaging laminated film, or inclined with respect to the running direction, in the part below the half on the side , When a laminated film for packaging is made to produce a packaging bag having a check pouring nozzle, the inner surface of the packaging bag body after pouring the liquid package from the check pouring nozzle is manufactured. Since the close contact caused by the wetness by the packaged object can be effectively prevented by the uneven stripes etc. that do not fit each other, the dispensing of the liquid packaged object can be made always smooth without a time lag. .

  In addition, in this method, it is only necessary to form irregularities or the like in the area of the laminated film for packaging that contributes to the section of the filling and packaging space of the packaged object, so that the flexible packaging bag can be manufactured easily and quickly. Can do.

  By the way, in this case, the film-like non-return dispensing nozzle that administers the liquid dispensing, the sealant layer on the opposing surface of two flat laminated soft plastic films that overlap each other, and the peripheral edge excluding the portion that becomes the base edge of the nozzle When parts are sealed to each other and the dispensing passage is defined in the middle part of the width, the self-sealing check function is more effectively exhibited in the check dispensing nozzle based on the action of the flat soft plastic film. Can be made.

  In this manufacturing method, the vertical sealing portion and the horizontal sealing portion are formed in a state in which a single laminated film for packaging in which a film-like non-return pouring nozzle is fusion-bonded to one side portion is half-folded at the central portion in the width direction. In addition to sequentially forming each of the above, a single laminated film with a film-like non-return pouring nozzle fused and bonded to one side is separate from the packaging film having the same laminated structure. It can also be carried out by continuously feeding and laminating the laminated film at the same speed and forming each of the longitudinal seal part and the transverse seal part on the laminated film for packaging.

  And in any of these cases, one or more concave or convex strips, or irregular strips are formed on either the front or back side of the laminated film for packaging, or the front or back side. In this latter case, it is possible to extend the ridges and the like in the packaging bag so as to extend in directions intersecting each other. It is preferable for preventing unexpected fitting such as irregularities.

Further, in the uneven strip forming apparatus of the present invention, in particular, a half film on the fusion bonding side of the film-like non-return dispensing nozzle in a region contributing to the section of the filling and packaging space of the packaged object of the single laminated film for packaging. Under a simple structure in which only one or more concavo-convex ridges are inserted into the opposed peripheral surfaces of a pair of heating rollers that are driven to rotate in opposite directions while sandwiching the portion below the portion in the thickness direction, The laminated film for packaging provided by fusing and bonding a film-like non-return pouring nozzle on one side is efficiently provided with irregularities as required between the paired heating rollers at a predetermined continuous running speed. Can be formed.

And these things hold the part below the half part of the fusion-bonding side of the film-like non-return dispensing nozzle on at least one side sandwiching the central part in the width direction of one packaging laminated film in the thickness direction. In the case where one or more concavo-convex ridges are provided on the opposed peripheral surfaces of a pair of heating rollers that are rotationally driven in the opposite directions, and the widthwise central portion of one laminated film for packaging is sandwiched between On each side, rotate each pair of heating rollers that are driven to rotate in opposite directions by sandwiching the part of the laminated film part below the half of the fusion check side of the film-like non-return dispensing nozzle in the thickness direction. The same applies to the case where one or more ridges are provided on the opposed peripheral surfaces of the respective pairs of heating rollers, which are arranged at intervals in the axial direction, and enter one another.

By the way, in the latter case, the projections and depressions formed on the opposing peripheral surfaces of the two pairs of heating rollers positioned at intervals in the direction of the rotation axis are separated by the axis orthogonal line segment passing through the midpoint of the two pairs of heating rollers. When it arrange | positions asymmetrically with respect to, the fear of mutual fitting of an uneven | corrugated strip etc. in the packing object filling space of the manufactured package can be removed effectively.
When each of the two pairs of heating rollers is disposed on the packaging laminated film so as to be separated from each other in the running direction, the virtual roller is aligned with each pair of heating rollers in the axial direction as described above. An asymmetric arrangement is preferred.

Here, the uneven ridges on the opposing circumferential surfaces of the pair of heating rollers can be one or a plurality of annular endless ridges, and one or a plurality of spirals around the central axis. It can also be a rugged strip.
In the latter case, one or a plurality of concavo-convex strips extending in the same direction are provided on the respective peripheral surfaces of the two pairs of heating rollers, and the surface side The ridges and the like of the part and the back side part can be extended to cross each other.

It is a schematic side view which shows the implementation apparatus of the method which concerns on this invention. It is a general | schematic line | wire expansion | deployment top view which shows the example of melt | fusion joining of the film-like non-return pouring nozzle to the one side edge to the laminated film for packaging. Is a schematic perspective view illustrating the concave convex forming apparatus. FIG. 4 is a plan view of FIG. 3. It is an expansion | deployment top view which shows the example of formation of the uneven | corrugated strip etc. to one laminated film for packaging. It is a basic line expansion | deployment top view which shows the example of bag making using the film shown in FIG.

  In FIG. 1 which shows the apparatus for carrying out the method according to the present invention in a schematic side view, reference numeral 1 denotes a winding roll of a laminated film for packaging having a laminated structure of two layers or three or more layers, and usually a support shaft with a brake From this winding roll 1 supported on 2, the laminated film 3 for packaging which is continuously fed out at a predetermined speed under the action of, for example, a vertical sealing roller (not shown) is a film-like non-return pouring. After the film-like non-return dispensing nozzle is fused and bonded to one side portion in a protruding position from the side edge of the nozzle by the fusion bonding apparatus 4, the film is subjected to the uneven stripe forming apparatus 5 according to the present invention. For example, as in a general filling and packaging machine, a vertical seal is applied to each opposing sealant layer on both sides of the front and back sides in a state of being half-folded at the center in the width direction of a single laminated film 3 for packaging. The vertical seal is continuous by the roller. In addition, a liquid package is continuously filled between the laminated film portions on the front side and the back side, and this is then separated by a predetermined distance in the running direction of the film by a lateral seal roller (not shown). In this case, a lateral seal portion extending over the entire width of the laminated film for packaging, for example, a bottom seal portion and a top seal portion, is formed, so that a packaging bag filled and packaged with a liquid article is obtained.

  Here, the packaging bag to be manufactured may be one in which only one of the bottom seal part or the top seal part of the lateral seal part, which is not filled and packaged with the liquid package, is applied. Is possible.

  By the way, the film-like non-return pouring nozzle fused and bonded to one side of the packaging laminated film 3 as described above is a sealant layer on the opposite surface of two flat laminated soft plastic films that overlap each other. Can be configured by mutually sealing and joining at the peripheral portion excluding the portion serving as the base end side of the nozzle, and by dividing the extraction passage in the intermediate width portion. When the liquid package packed in the packaging bag as described above is poured out, the tip of the film check nozzle is cut out and a spout is formed in the nozzle. By tilting the packaging bag, the item to be packaged can flow smoothly as expected through the pouring passage.

  On the other hand, when returning the packaging bag to the standing posture and stopping the pouring, the pouring passage of the non-return pouring nozzle formed by sealing and joining a flat soft plastic film is immediately restored to the original shape. The self-return function can be surely exhibited by bringing the pouring passage into close contact with the liquid package by wetting.

  In addition, since the flexible packaging bag itself is crushed and deformed without taking in the outside air when the liquid packaged item is poured out, the packaged item in the bag is poured out of course after it is poured out. This also effectively prevents contact with outside air or the like.

  As described above, the fusion joining of the film-like non-return dispensing nozzle to the one side portion of the packaging laminated film 3 by the fusion device 4 is, for example, as shown in FIG. A plurality of film-like non-return dispensing nozzles 7 bordered by the ridges 6 are caused to run from a winding roll 9 with a nozzle film 8 formed in advance in an aligned orientation from a winding roll 9 to a continuously running laminated film 3. Then, the base end portion of each of the check pouring nozzles 7 is melted with the sealant layer on the outer surface thereof into the sealant layer on one side of the laminated film 3 for packaging in a projecting posture from the side edge thereof. After that, the unnecessary portion of the nozzle film 8 separated from the non-return dispensing nozzle 7 after the fusion bonding is separated at the position where the tear guide rod 6 is formed. Winded as a roll 10 Wound on the shaft.

In this case, the nozzle film 8 needs to run at the same speed as the laminated film 3 for packaging at the time of fusion bonding of the base end portion of the check pouring nozzle 7 at the same time. During this time, the vehicle can be run at a low speed or stopped. By the way, the fusion splicing region of the check pouring nozzle 7 with respect to the laminated film 3 for packaging is, for example, in the width direction of the laminated film 3 for packaging, the width a being in the range of 3 to 50 mm, and the laminated film 3 for packaging. By setting the length b in the range of 20 to 150 mm in the length direction, the required fusion-bonding strength of the non-return dispensing nozzle 7 can be ensured.
Here, the fusion splicing pitch of the check pouring nozzle 7 can be appropriately selected according to the dimensions of the packaging bag to be manufactured, but in many cases it can be in the range of 50 to 500 mm.

  By the way, such fusion-bonding of the outer surface sealant layer of the film-like non-return dispensing nozzle 7 to the sealant layer at one side of the packaging laminated film 3 is, for example, as shown by a solid line in FIG. In a state where the nozzle film 8 drawn out from the winding roll 9 is wound around various rollers of the fusion bonding apparatus 4, the nozzle film 8 is wound on the winding roll 9 based on the rotational drive of any of the rollers. From the time when the film mark sensor 11 detects the arrival at a predetermined position of the spout nozzle joining portion of the laminated film 3 for packaging which is continuously run at a constant speed, while continuously or intermittently running. When the driving peripheral speed of the fuser roller pair 12 is gradually increased to the traveling speed of the laminated film 3 for packaging, and the nozzle joint portion of the laminated film 3 for packaging reaches the fuser roller pair 12, The multi-layer film 3 for packaging is provided on the non-return dispensing nozzle 7 of the nozzle film 8 running at the same speed as the multi-layer film 3 for wearing, by one protrusion 14 of one of the fusing roller pairs 13 to be described later. Can be carried out by pressing and heating the two sealant layers.

Here, the fuser roller pair 12 includes a heating roller 13 with a built-in heater and a heating roller 15 with a built-in heater, which are driven intermittently or continuously at a constant speed in synchronism with each other. The heating roller 15 is wound around the nozzle film 8, and is constantly heated by the cylinder 16 to the traveling path side of the packaging laminated film 3, and thus to the sticking heat roller 13 side.
On the other hand, the sticking heat roller 13 is disposed in the circumferential direction at an interval corresponding to the fusion splicing pitch of the check pouring nozzle 7, and the laminated film 3 for packaging is attached to the nozzle film 8 on the heating roller 15. It has a protrusion 14 that presses to the side. Therefore, the protrusion 14 of the sticking heat roller 13 is positioned away from the packaging laminated film 3 with respect to the portion other than the joining portion of the check pouring nozzle 7 to the packaging laminated film 3.

In the fusion bonding apparatus 4 shown in FIG. 1, reference numerals 17 and 18 respectively denote a support shaft for the winding roll 9 of the nozzle film 8 and a winding shaft for winding an unnecessary portion of the nozzle film 8 as the winding roll 10. .
Reference numeral 19 in the figure denotes a nip roller that prevents the nozzle film 8 from slipping against the heating roller 15 by, for example, elastically pressing the nozzle film 8 against the heating roller 15 of the fusing roller pair 12. Are arranged in a horizontal position, and guide the traveling of the nozzle film 8 fed from the winding roll 9 and the unnecessary portion of the nozzle film 8 separated from the non-return dispensing nozzle 7 and meandering. The guide roller which prevents generation | occurrence | production of a wrinkle, etc. is shown.
Reference numerals 22 and 23 are connected to cylinders, springs, etc. (cylinders in the figure), and show the nozzle film 8 and the respective dancer rollers for adjusting the tension acting on the unnecessary portions of the nozzle film 8, respectively. 1 and 2, respectively, are film feed rollers that are disposed on the support shaft 17 side and the take-up shaft 18 side with a pair of fusing rollers 12 therebetween and are driven to rotate at a required speed.

Note that, as indicated by the solid line in the figure, the nozzle film 8 is allowed to travel without being wound around the film feed roller 24, but the pass roller of the nozzle film 8 is shown as a virtual line in the figure. It is also possible to pass through 24.
Further, as indicated by a solid line in the figure, an unnecessary portion of the nozzle film 8 wound around the film feed roller 25 can be wound without passing through the film feed roller 25 as indicated by a virtual line in the figure. is there.
Further, when the nozzle film 8 can be driven at a required speed only by the heating roller 15 of the fusing roller pair 11, a pass line that does not pass through any of the film feeding rollers 24 and 25 can be selected. .

The laminated film 3 for packaging is passed through such a fusion splicing device 4 and, as shown in FIG. 2, a film-like non-return dispensing nozzle 7 is provided on one side of the laminated film 3 and the side edge of the film. After the fusion bonding in the projecting posture from the film, the half of the laminated film 3 for packaging in the region that contributes to the division of the filling space of the packaged object is below the fusion bonding side of the film check dispensing nozzle In this part , the laminated film 3 for packaging is formed so as to form one or more concave or convex stripes or irregular stripes extending in the running direction of the laminated film for packaging or inclined with respect to the running direction. Is then passed through the uneven strip forming apparatus 5.

3 and 4, respectively, a perspective view and a plan view simply showing an example concave convex forming equipment, the concave-convex formation device 5 illustrated, a piece of film-like way pouring nozzle 7 were fused junction The laminated film 3 for packaging in a state where it is half-folded at the central portion in the width direction, the vertical seal portion to the free end portion of the film 3 and the horizontal seal portion extending across the half-fold film are sequentially In forming, the ridges and the like are formed on the entire filling space partition regions of the front surface portion and the back surface portion of the laminated film 3 for packaging.

For this reason, here, two pairs of heating rollers with built-in heaters, which are sandwiched in the film thickness direction and are driven to rotate in opposite directions, with the entire filling space partition areas of the laminated film 3 for packaging being sandwiched in the film thickness direction. One or more ridges 31a, 31b and 32a, which are arranged coaxially at intervals in the axial direction, for example, are inserted into the opposing peripheral surfaces of each pair of heating rollers 31, 32, 32b is formed.
In addition, in the figure, since the uneven | corrugated strips 31a, 31b, 32a, and 32b are formed so as to extend spirally, each one of the pairs of heating rollers 31 and 32 is provided from one end to the other end. It is possible to form the concavo-convex ridge over the entire filling space partition region only by forming the concavo-convex ridge, but the concavo-convex ridge of each roller pair 31, 32 should be extended in a double or triple spiral form. You can also.

  By the way, the ridges can be appropriately selected to have a required cross-sectional shape such as a triangular shape, a square shape, a trapezoidal shape, a curved shape, etc., and the depth, height and pitch thereof are within the packaging bag. Although it can be made fine as long as unintentional adhesion of the surface can be prevented, from the viewpoint of ease of processing on the peripheral surface of the roller, the depth or height of the ridges is 0.02 to 3 mm. In the range and the pitch, the range of 0.1 to 10 mm is preferable.

  In this case, when the concave and convex strips that enter each other on the peripheral surface of the roller are formed to endlessly extend in an annular shape, each pair of heating elements is used to provide the concave and convex strips over the entire filling space partition region. It is necessary to form a plurality of irregularities on the peripheral surfaces of the rollers 31 and 32.

  Moreover, when forming an uneven | corrugated strip etc. only in any one filling space division area of the surface side part or the back surface part of the laminated film 3 for packaging here, it is only on the heating roller surrounding surface of any one pair. When the concave and convex strips can be provided, and when the concave and convex strips or the like are formed only in the vicinity of the fusion-bonded portion of the film-like non-return dispensing nozzle 7 in one of the filling space partition regions, one pair of heating It is also possible to provide an uneven strip only on a part of the roller peripheral surface that is biased to one side.

3 and FIG. 4, each pair of heating rollers 31 and 32 of the uneven strip forming device 5 is drivingly connected to the driving shaft 34 by a heater built-in driving shaft 34 connected to a motor 33 and a gear pair 35. These are rotated in the opposite direction to the drive shaft 4 and are also fitted and fixed to each of the driven shafts 36 with built-in heaters, so that they are horizontally arranged in a mutually parallel posture.
And the spiral uneven | corrugated strip which penetrates into a surrounding surface is provided, and although the sealant layer of the laminated film 3 for packaging does not melt | dissolve, it is required in order to braze a required uneven strip etc. to the film 3, 40-200 degreeC By passing the laminated film 3 for packaging in which the non-return dispensing nozzle 7 is fusion-bonded between two pairs of heating rollers 31 and 32 heated to a temperature in the range of 5 are formed on the entire thickness of the film 3 as illustrated in FIG.

  In this case, the concave and convex stripes 37 and the like on the film 3 are portions other than the half-folded portion of the laminated film 3 for packaging, the portion where the vertical seal portion of the film free end portion is to be formed, and the portion where the horizontal seal portion is to be formed. However, if the vertical and / or horizontal seal portions can be formed sufficiently appropriately even if the concave and convex strips 37 are present, the concave and convex strips 37 and the like are also formed at the locations where the seal portions are to be formed. I was able to.

Here, the discontinuity part of the uneven ridges 37 etc. at the place where the horizontal seal portion is to be formed is not formed on the uneven ridges 31 a, 31 b, 32 a, 32 b at one place on the circumference of each pair of heat rollers 31, 32. The portions can be formed by being aligned in the axial direction.
On the other hand, the circumferential length of each pair of heat rollers 31, 32 is equal to the length of one bag of the packaging bag, and the concavities and convexities that are continuous over the entire circumference of each pair of heat rollers 31, 32. When the strips 31a, 31b, 32a, and 32b are provided, the concave and convex strips 37 and the like are also formed at the portion where the horizontal seal portion is to be formed. It becomes discontinuous every 32 rotations.

  As shown in FIG. 5 which shows a single laminated film 3 for packaging as a development plane from the sealant layer side, when the concavo-convex ridge 37 and the like are inclined in the circumferential direction, the laminated film 3 is Half-fold at position C so that the sealant layers face each other on the front and back sides, and as shown in FIG. In a state where the seal portion 38 is formed and the required transverse seal portion 39 that completely crosses the half-folded film is formed at intervals in the length direction of the film 3 as shown by hatching in the figure. Since the ridges and the like 37 in the filling space partition areas on the front and back sides are inclined in opposite directions and extend so as to cross each other, it is not intended due to the wetness of the inner surface of the packaging bag by the liquid article to be packaged Adequately prevent adhesion It can be.

By the way, in the vertical seal portion 38 that passes through the fusion bonded portion of the film-like non-return pouring nozzle 7 to the laminated film 3 for packaging, it is also sealed and bonded to the opposing surface of the non-return pouring nozzle 7 by the sealant layer. The
More preferably, in this longitudinal seal portion 38, a sealant layer having a higher melting point than the sealant layer on the inner surface of the base end portion of the film-like non-return dispensing nozzle 7, for example, the sealant layer on the outer surface of the nozzle is temporarily sealed and bonded to each other. The unintended inflow of the liquid package into the dispensing passage of the check dispensing nozzle 7 and, consequently, the unexpected permanent deformation of the dispensing passage of the check dispensing nozzle 7 are prevented.
The temporary seal bonding here has only a bonding strength that peels off by slightly pressing the body of the packaging bag when the packaged article is poured out. It does not affect the dispensing of the package.

By the way, as for the uneven | corrugated strips 37 etc. which are formed in the filling space partition area | region of the front and back of the laminated film 3 for packaging, each opposing circumference | surroundings of two pairs of heating rollers 31 and 32 located in the rotation axis direction at intervals. Irregular ridges 31a, 31b, 32a, 32b formed on the surface pass through the midpoints of the heating rollers 31, 32, regardless of whether or not the two pairs of heating rollers 31, 32 are on a common axis. In order to prevent unintentional close contact of the inner surface of the packaging bag, it is preferable to arrange it asymmetrically with respect to the position, cross-sectional shape, number, extension direction, etc. with respect to the axial straight line.
This also applies to the case where only a pair of heating rollers for forming the concave and convex stripes 37 and the like is disposed only in one of the front and back filling space partition regions of the packaging laminated film 3.

  In addition, when forming the uneven strips 37 or the like on both the front side and the back side, or the filling space partition region of the laminated film 3 on either the front or back side, not only half-folding the single laminated film 3 for packaging, With respect to the single laminated film 3 for packaging with the film-like non-return pouring nozzle 7 fusion-bonded, the laminated film 3 for packaging having the same laminated structure that is separate from the laminated laminated film 3 is continuously fed and run. It is also possible to produce a packaging bag by sequentially forming a vertical seal portion and a horizontal seal portion on both the laminated films 3 for packaging.

  In addition, when forming a plurality of concavo-convex strips 37 and the like on each of the packaging laminated films 3 on the front side and the back side, at least one of the width dimension, the concavo-convex pitch and the extending direction of the concavo-convex strips 37 and the like is mutually determined. It is preferable to make them different from each other in order to prevent unexpected adhesion of the inner surface of the packaging bag.

DESCRIPTION OF SYMBOLS 1 Winding roll 2 Support axis | shaft 3 Laminated | multilayer film for packaging 4 Fusion joining apparatus 5 Concave and convex forming apparatus 6 Tear guide rod 7 Film-like non-return pouring nozzle 8 Nozzle film 9 Nozzle film winding roll 10 Unnecessary partial winding roll 11 Mark sensor 12 Fusing roller pair 13 Adhesive heat roller 14 Protrusion 15 Heating roller 16 Cylinder 17 Support shaft 18 Winding shaft 19 Nip rollers 20, 21 Guide rollers 22, 23 Dancer rollers 24, 25 Film feed rollers 31, 32 Heating roller 31a, 32a Concave strip 31b, 32b Convex strip 33 Motor 34 Drive shaft 35 Gear pair 36 Driven shaft 37 Concave strip 38 Vertical seal portion 39 Horizontal seal portion

Claims (18)

Protruding from the side of the packaging bag body, which is formed by sealing and bonding the laminated films on the front and back sides, and the overlapping soft plastic films are in close contact with each other under the liquid package. In producing a flexible packaging bag having a check function provided with a film check check nozzle,
The sealant layer on the outer surface of the base end portion of the film-type non-return dispensing nozzle is applied to the sealant layer of the laminated film for packaging on one side of the laminated film that is continuously fed out. After the spout nozzle is fused and bonded in a protruding position from the side edge of the laminated film for packaging, the film-like non-return pouring of the area of the laminated film for packaging that contributes to the section of the packing space for filling the packaging One or more concave or convex stripes or irregular stripes extending in the running direction of the laminated film for packaging or inclining with respect to the running direction in a portion below the half part on the fusion-bonding side of the nozzle Form the
Next, in a posture in which the sealant layers of the packaging film on the front side and the back side face each other, the non-return pouring is continuously performed on the respective sealant layers on both sides of the front and back sides in the film running direction. A method for producing a flexible packaging bag having a check function, wherein a vertical seal portion passing through a fusion-bonded portion of a nozzle and a horizontal seal portion extending in the film width direction with an interval in the film running direction are sequentially formed.   The sealant layers on the opposing surfaces of two flat laminated soft plastic films that overlap each other are sealed to each other at the peripheral portion excluding the portion that becomes the base end side of the nozzle, and the dispensing passage is defined at the intermediate width portion. The manufacturing method of the flexible packaging bag which provides the non-return function of Claim 1 which comprises a film-form non-return pouring nozzle by this.   Each of the vertical seal part and the horizontal seal part is sequentially placed in a state where a laminated film for packaging, in which a film-like non-return dispensing nozzle is fused and bonded to one side part, is half-folded at the center part in the width direction. The manufacturing method of the flexible packaging bag which provides the non-return function of Claim 1 or 2 to form.   A single laminated film for packaging with a film-like non-return pouring nozzle fused and joined to the laminated laminated film of the same laminated structure, which is separate from the laminated film, is continuously fed and run. The manufacturing method of the flexible packaging bag which provides the non-return function of Claim 1 or 2 which forms each of a vertical seal part and a horizontal seal part in a laminated film for packaging one by one.   The check function according to any one of claims 1 to 4, wherein one or more concave or convex stripes or irregular stripes are formed on at least one of the packaging laminated films on the front side and the back side. Of manufacturing a flexible packaging bag.   While forming concave or convex stripes or irregular stripes on the packaging film on each of the front and back sides, the concave or convex stripes of the front film or the irregular stripes and the concave or convex stripes of the back film The manufacturing method of the flexible packaging bag which has a non-return function in any one of Claims 1-5 made to extend in the direction which mutually cross | intersects in the form which made the strip | belt or the uneven | corrugated strip into the packaging bag. . One or more recesses or ridges extending in the running direction of the laminated film for packaging or inclined with respect to the running direction, or a pair of ridges or projections provided with ridges that enter each other. The manufacturing method of the flexible packaging bag which provides the non-return function in any one of Claims 1-6 formed by letting the laminated film for packaging pass between heating rollers. The laminated film for packaging on the front side and the back side is passed between two pairs of heating rollers provided with concavo-convex strips that enter each other, and the laminated film for packaging is packed into the packing space for packing the packaging object. region contributing filmy way pouring concave or projections over one half portion following the portion of the fusion bonding of the nozzle or forming unevenness Article according to any one of claims 1 to 7 A method of manufacturing a flexible packaging bag having a check function. The front and a plurality of concave-convex are formed in each of the packaging laminate film on the back side, a width dimension, uneven pitch and any of claims 1-8 which differ from one another at least one extending direction The manufacturing method of the flexible packaging bag which provides the non-return function as described in 2. In the vertical seal part, a sealant layer that will be located on the inner surface of the packaging bag body and a film-like non-return pouring in which one outer surface of the base end part is fusion bonded to one side of the laminated film for packaging causing the sealant layer of the other of the outer surface of the nozzle is sealed joint according to claim 1-9 according to any method for producing a flexible packaging bag comprising a check function. The method for producing a flexible packaging bag having a check function according to claim 10 , wherein the sealant layers on the inner surface of the base end portion of the film-like non-return dispensing nozzle are temporarily sealed and joined to each other at the vertical seal portion. A concave-convex forming apparatus used for carrying out the method of making any of claims 1 to 11,
Packing and packing space for a package of one piece of laminated film that is continuously welded at a constant speed with a film-like non-return pouring nozzle on one side, with a lateral projection posture. Opposite peripheral surfaces of a pair of heating rollers which are driven to rotate in opposite directions by sandwiching a portion of the film-like non-return dispensing nozzle below the half of the fusion bonding side in the thickness direction in the thickness direction. An uneven strip forming apparatus provided with one or more uneven strips that enter each other. Rotating in opposite directions to each other sandwiching at least one side filmy way pouring half or less part of the fusion junction side of the nozzle of sandwiching the widthwise central portion of one of the packaging laminate film in the thickness direction The uneven | corrugated strip | stripe formation apparatus of Claim 12 which provides the 1 or more uneven | corrugated strip | interval which mutually penetrates in the opposing peripheral surface of a pair of driven heating roller. At each side that sandwiches the central portion in the width direction of a single laminated film for packaging , sandwich the portion of the laminated film portion below the half of the fusion check side of the film-like non-return dispensing nozzle in the thickness direction. Each pair of heating rollers that are rotationally driven in opposite directions are arranged at intervals in the direction of the rotation axis, and one or more concavo-convex ridges are provided to enter the opposing peripheral surfaces of each pair of heating rollers. The uneven | corrugated strip forming apparatus of Claim 12 or 13 which becomes. The ridges formed on the opposing circumferential surfaces of the two pairs of heating rollers that are spaced apart in the direction of the rotation axis are arranged asymmetrically with respect to the line perpendicular to the axis passing through the midpoint of the two pairs of heating rollers. The uneven | corrugated strip forming apparatus of Claim 14 formed. Each of the peripheral surface of the heating roller pair, according to any one of formed by providing an annular concavo-convex conditions of one or a plurality of claims 12-15, concave-convex formation device. The concavo-convex line forming apparatus according to any one of claims 12 to 15 , wherein one or a plurality of helical concavo-convex lines are provided on each peripheral surface of the heating roller pair. The concavo-convex strip forming apparatus according to claim 17 , wherein one or a plurality of concavo-convex strips are provided on the peripheral surfaces of the two pairs of heating rollers, both extending in a spiral manner in the same direction.

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