JP2008055739A - Method for attaching pouring nozzle to packaging film and attaching apparatus used therefor - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a method for attaching a pouring nozzle to a packaging film, which simply and efficiently attaches the liquid pouring nozzle having a checking function to the packaging film for packaging bags under the continuous running of the packaging film. <P>SOLUTION: The nozzle film 2 which has many pouring nozzles 31 is unwound and made to travel to the packaging film 1 under a continuous run. The base of each pouring nozzle 31 is heat-sealed, in its one outside surface, onto one side part of the packaging film 1 to bond the pouring nozzle 31 to the packaging film. Then the unnecessary part 14 of the nozzle film is cut off from the pouring nozzle 31 and removed. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a packaging film made of a soft film, which is used to manufacture a packaging bag with a check-out nozzle, which is filled and packaged with seasoning, wine, sake, soup, dressing and other liquid packages. The present invention relates to a method of attaching the pouring nozzle and an attaching device used therefor.

  In Patent Document 1, the packaged material in the bag is poured out without taking in the outside air into the packaging bag, and is applied to the flexible packaging bag body corresponding to the pouring by shrinkage or crushing deformation. The self-sealing check function prevents the ingress of outside air into the packaging bag by automatically sealing the discharge port when wetted by the packaged item and stopping the dispensing of the packaged item. It does not require the cap to be attached to or removed from the dispensing nozzle, and can be easily manufactured, and it can always be reliably integrated into the packaging bag body or subsequently fused to it. An inexpensive liquid dispensing nozzle that can be easily performed, and a packaging bag using the same are disclosed.

The pouring nozzle here is the side or top of the soft packaging bag body, the base end of which is bonded to the inner surface of the packaging bag body by the outermost sealant layer, and is thermoplastic. Of the uniaxial or biaxially stretched base film layer and the respective sealant layers laminated with the uniaxial or biaxially stretched base film layer, for example, a laminated film on each side of the front and back sides, for example, a laminated film having two front and back sides or a front and back side One laminated film folded back to the other is bonded to each other in the peripheral portion except the base end side with the one sealant layer facing each other.
JP-A-2005-59958

According to the present invention, a liquid dispensing nozzle having such a check function can be easily and efficiently applied to a flexible packaging film for a packaging bag, mostly a laminated structure, under continuous running of the packaging film. The present invention provides a method for attaching a pouring nozzle to a packaging film and a mounting device used therefor.

  According to the present invention, a method for attaching a pouring nozzle to a packaging film includes a nozzle film in which a number of pouring nozzles are formed in advance by heat sealing or the like, for example, for a packaging film that is continuously run in a filling and packaging machine. The base of each pouring nozzle is moved to the sealant layer on one side of the surface of the packaging film, which is the inner surface of the packaging bag. Heat-sealing is performed so that the pouring nozzle is fusion-bonded to the packaging film, and then unnecessary portions of the nozzle film other than the pouring nozzle portion are separated and removed from the pouring nozzle.

  Here, preferably, the pouring nozzle is heat-sealed on one side of the packaging film in a projecting posture toward the side thereof.

  Furthermore, when the packaging film is a packaging bag in which an article to be packaged is automatically filled and packaged, following the above, the packaging film with the spout nozzle remaining bonded is folded in the width direction. Heat seal the sealant layer located on the inner surface of the other side of the packaging film to the sealant layer on the inner surface of one side and the sealant layer on the other outer surface of the dispensing nozzle. Then, it is preferable that the pouring nozzle is bonded in a liquid-tight manner between the respective side portions so that the packaging film has a cylindrical shape that allows filling of an object to be packaged therein.

  By the way, the feeding nozzle, which is joined to the packaging film as described above, directly, the nozzle film having a large number of dispensing nozzles is supplied in half in the width direction. The inner surfaces of the folded laminated film are heat-sealed corresponding to the inner contour shape of the pouring nozzle, and a tear-inducing ridge corresponding to the outer contour shape of the pouring nozzle is formed around the heat seal portion. It is preferable to carry out the above-described nozzle film by feeding it out to the continuously running packaging film.

  An apparatus for attaching a dispensing nozzle to a packaging film according to the present invention includes a feeding shaft for supporting a winding roll of a nozzle film in which a number of dispensing nozzles are formed in advance, and a winding film on the feeding shaft. Are arranged in a continuous running path of a packaging film of a packaging machine, for example, in a packaging machine, and many of them are always in contact with the base film layer side of the packaging film having a laminated structure. The heat roll is moved forward and backward with respect to the heat roll, the sealant layer on the outer surface of the nozzle film is pressed against the sealant layer on the surface of the packaging film on the heat roll, and the dispensing nozzle is packaged by heat sealing. After the bonding roll is bonded to the packaging film and the dispensing nozzle is bonded to the packaging film, unnecessary portions of the nozzle film are cut from the dispensing nozzle. And be separated roll is made comprises a winding shaft of the unnecessary portion of the nozzle film.

  In the method for attaching the dispensing nozzle according to the present invention, the nozzle film is fed out to the continuously running packaging film, and the base of the dispensing nozzle is heat sealed on one side of the packaging film. In addition, the unnecessary part of the nozzle film is separated and removed from the pouring nozzle, so that the pouring nozzle can be securely placed at the predetermined position on the packaging film as it is without interfering with the continuous running of the packaging film. Therefore, it is possible to easily and efficiently attach the dispensing nozzle.

  Moreover, according to this attachment method, the dispensing nozzle can be attached while the packaging film is running for automatic filling and packaging in the filling and packaging machine, so that a separate work process for attaching the dispensing nozzle is possible. Compared with the case of providing the above, there are many advantages such as cost and man-hours as well as time.

  And in this method, when the pouring nozzle is heat-sealed in a projecting posture to the side of the packaging film, the packaging bag can be manufactured without hindering any automatic filling and packaging of the package with the packaging film. In addition, it is possible to easily prepare an article to be packaged from the manufactured packaging bag by forming a nozzle opening by excising the tip of the dispensing nozzle.

In this case, the heat sealing of the dispensing nozzle with respect to the packaging film is performed by, for example, accelerating the feeding travel speed of the nozzle film based on the input of the horizontal seal signal or the registration mark sensor signal, and the feeding running speed is When the running speed of the film reaches the same speed, heat sealing of the pouring nozzle to the packaging film is performed, and after completion of the heat sealing, the feeding speed of the nozzle film is reduced to the set speed. be able to.
Therefore, the adjustment of the heat seal interval of the dispensing nozzle with respect to the packaging film according to the size of the packaging bag to be manufactured, for example, until the feeding speed of the nozzle film becomes equal to the speed of the packaging film. It is possible to adjust at least one of acceleration time and acceleration, and at least one of deceleration time and deceleration until the nozzle film speed is reduced to a set speed.

  In addition, as described above, the pouring nozzle is heat-sealed to one side of the packaging film, and after the unnecessary portion of the nozzle film is cut off, the packaging film in which only the pouring nozzle is bonded and left is widened. Folded in two directions, the inner surface of the other side of the packaging film is heat-sealed to the inner surface of one side and the outer surface of the dispensing nozzle, and they are bonded in a liquid-tight manner to them. In this case, the conventional automatic filling and packaging can be carried out as it is, and a packaging bag as expected can be manufactured.

  In this case, heat sealing of the outer surface of the pouring nozzle to one side of the packaging film and liquid-tight fusion as described above to the outer surface of the pouring nozzle of the other side of the packaging film, etc. During the splicing and joining, the inner surfaces of the spout nozzles are fused to each other by changing the fusing temperature of the sealant layer on the inner surface of the spout nozzle, for example, by selecting the material and physical properties of the sealant layer. By setting it higher than that of the sealant layer on the outer surface, it can be sufficiently prevented.

  It should be noted that the formation of a large number of dispensing nozzles on the nozzle film that is fed out with respect to the packaging film that is continuously run can be appropriately performed as required, but is folded in two in the width direction. The inner surfaces of the half-folded laminated film are heat-sealed so as to correspond to the inner contour shape of the pouring nozzle, and a tear-inducing ridge corresponding to the outer contour shape of the pouring nozzle is provided around the heat seal portion. When forming the nozzle film by forming, the step of winding the laminated film while folding it in a half-folded state, and the heat sealing process and the induction wrinkle forming process in turn while running the rolled-up laminated film The required nozzle film can be simply configured by the process applied to the above.

  Here, the apparatus for attaching the pouring nozzle to the packaging film according to the present invention includes a feeding shaft for a winding roll of the nozzle film, a feed roll for pulling out the nozzle film from the winding roll at a required speed, and a packaging film A heat roll placed in a continuous travel path, a pressure roll that presses the outer surface of the nozzle film against the surface of the packaging film on the heat roll, and joins the dispensing nozzle to the packaging film by heat sealing, a dispensing nozzle It is possible to provide a separation roll that separates the unnecessary part of the nozzle film from the pouring nozzle after joining, and a winding shaft for the unnecessary part of the nozzle film. Therefore, it can be easily attached to an existing filling and packaging machine without occupying a large space.

  1 and 2 are a front view showing an embodiment of an apparatus according to the present invention and a side view taken along line II-II in FIG. 1, wherein 1 is a packaging film for producing a soft packaging bag. 2 shows a nozzle film in which a large number of dispensing nozzles are formed in advance.

  Here, the packaging film 1 is guided continuously by a plurality of guide rolls 3 arranged in a horizontal posture, such as a filling and packaging machine, and continuously run at a required speed. The nozzle film 2 is wound around the winding roll 4. Is fed out from the feeding shaft 5 that supports the packaging film 1.

  Here, in the travel path of the packaging film 1, a heat roll 6 that is always in contact with the base film layer side of the packaging film 1, which is often laminated, is also disposed horizontally between the guide rolls 3. Further, a pair of nippings that draw out the nozzle film 2 at a required speed from the winding roll 4 on the feeding shaft through the guide roll 7 in a horizontal posture in the feeding traveling path of the nozzle film 2. A pressure roll 11 for disposing a feed roll 8 made of a roll and pressing the outer surface sealant layer of the nozzle film 2 against the sealant layer of the packaging film 1 through two horizontal guide rolls 9 and 10, It is disposed at a position facing the heat roll 6 so as to be able to move forward and backward.

  The pressure roll 11 is moved and displaced when the pouring nozzle of the nozzle film 2 that is nipped by the feed roll 8 and driven out at a required speed reaches the pressure roll position under the drive of the feed roll 8. The dispensing nozzle functions to press the heat roll 6 through the packaging film 1, and as a result, the dispensing nozzle is heat-sealed to the sealant layer of the packaging film 1 with a sealant layer on the outer surface thereof. Will be.

  In this case, the advancing displacement of the pressure-bonding roll 11 is based on detecting the position of the pouring nozzle in the nozzle film by a registration mark sensor 12 provided facing the guide roll 7 in the figure. 8 is performed at the time when the feeding traveling speed of the nozzle film 2 is increased until the traveling speed of the nozzle film 2 becomes equal to the traveling speed of the packaging film 1. It will be displaced backward.

  By the way, the synchronization of the running speed of the nozzle film 2 and the running speed of the packaging film 1 here drives the feed roll 8 with the running speed of the packaging film 1 detected by an encoder, for example. This can be done by feeding back to a servo motor or the like.

  Further, in a position adjacent to the pressure-bonding roll 11, the unnecessary portion of the nozzle film 2 is poured after the pouring nozzle is heat-sealed to a predetermined position of the packaging film under the action of the pressure-bonding roll 11. A separation roll 13 that is also separated from the discharge nozzle, which is also a pair of sandwiching rolls, is arranged, and a winding shaft 15 that takes up the unnecessary portion 14 separated from the discharge nozzle by the separation roll 13 is arranged, for example, , Disposed at a position immediately above the feeding shaft 5.

  Here, both the feed roll 8 and the separating roll 13 can clamp or release the nozzle film 2 or the unnecessary portion 14 by moving one of the pair of sandwiching rolls forward and backward with an air cylinder or the like. The rolls 8 and 13 can be rotated at a required speed by being driven to rotate by a servo motor or the like.

  The feeding shaft 5 can include a brake for adjusting the feeding tension of the nozzle film 2, and the winding shaft 15 can include a torque motor and other rotational driving means.

Furthermore, the forward / backward displacement of the press roll 11 can be performed by a translation drive means such as an air cylinder.
Here, reference numeral 16 in FIG. 1 denotes a horizontal guide roll disposed between the separation roll 13 and the winding shaft 15.

  In the apparatus configured as described above, the heat roll 6 includes an electric heater 22 in a central shaft 21 that is rotationally driven by a servo motor, for example, as illustrated in FIG. And a heat insulating sleeve 25 that is in contact with the flange member 23, 24 provided at intervals in the axial direction of the central shaft 21 over the most part of the width of the packaging film 1 is arranged. And the peripheral surface of the heat conductive flange member 23 is exposed from the heat insulating sleeve 25 at the axial direction portion corresponding to the heat seal portion of the nozzle film 2 pouring nozzle to the packaging film 1. The heat insulating support member 26 that supports the side edge portion of the packaging film 1 and the non-welded portion of the nozzle film 2 is adjacent to the flange member 23, According to this, the packaging film 1 that is continuously run contacts the peripheral surface of the heat insulating sleeve 25 on the base film layer side in the majority of the width. In addition, on one side, the peripheral surface of the cross-section support member 26 is brought into contact with the peripheral surface of the heat conductive flange member 23.

On the other hand, the nozzle film 2 having a narrower width than the packaging film 1, which is fed out and traveled with respect to the packaging film 1, travels while being guided by the pressure-bonding roll 11 positioned opposite to the heat roll 6. The base portion of the pouring nozzle in the nozzle film that is heat sealed to the packaging film 1 travels in the position in the width direction corresponding to the peripheral surface of the thermally conductive flange member 23.
Therefore, here, the timing at which the pouring nozzle reaches the pressure roll 11 is measured, and the pressure roll 11 is displaced with respect to the heat roll 6 so as to pour while the both films 1 and 11 are traveling at a constant speed. The base of the nozzle can be heat sealed to its sealant layer on one side of the packaging film 1 with a sealant layer on its outer surface.

FIG. 4 is a perspective view schematically showing an operation of the apparatus configured as described above, and thus, an embodiment of the mounting method according to the present invention, in which 31 is a pouring formed in the nozzle film 2 in advance. Indicates a nozzle.
Here, the nozzle film 2 is fed and run from the winding roll 4 at a predetermined speed under the action of the feed roll 8 with respect to the packaging film 1 that is continuously run. When the pressure roll 11 is reached through the horizontal guide rolls 9 and 10, the pressure roll 11 is advanced and displaced by an air cylinder or the like, and the sealant layer on the outer surface of the nozzle is heated to the heat roll 6. Under the action of the conductive flange member 23, the sealant layer of the packaging film 1 is heat sealed.

By this, when the unit dispensing nozzle 31 is heat-sealed over its entirety, the pressure-bonding roll 11 is moved forward and backward to prevent the surplus portion of the nozzle film 2 from being heat-sealed to the packaging film 1, And after such heat sealing of the pouring nozzle 31 by the crimping roll 11, the unnecessary portion 14 of the nozzle film 2 excluding the pouring nozzle 31 is preferably operated under the action of the separation roll 13, While being cut off along a tear guide rod formed around the dispensing nozzle 31 and wound on a winding shaft 15 that is rotationally driven by a torque motor or the like, the dispensing nozzle 31 heat-sealed on the packaging film 1 is It is made to run with the packaging film 1. The heat seal as described above to the packaging film 1 of the dispensing nozzle 31 is performed when the registration mark sensor 12 detects the registration mark formed on the nozzle film 2 as exemplified in FIG. By the generated registration mark signal, the driving speed of the feed roll 8 is increased in accordance with the previously determined dispensing nozzle interval in the nozzle film, so that the feeding speed of the nozzle film 2 is changed to the packaging film. When it becomes equal to 1 traveling speed, it can carry out by carrying out displacement displacement of the press roll 11 over predetermined time.
Thereafter, the press roll 11 is moved backward, and the feed roll 8 is decelerated to reduce the feeding speed of the nozzle film 2 to the original speed, thereby completing one heat sealing step and the next heat sealing. It is possible to wait for the start of the process.
In such a heat sealing step of the dispensing nozzle 31, the heat sealing interval of the dispensing nozzle 31 is adjusted, for example, as shown in FIG. As described above, it can be performed by adjusting at least one of the increase / decrease time and the increase / decrease ratio of the feeding speed of the nozzle film 2.

  By the way, as shown in FIG. 4, the production of the nozzle film 2 in which a large number of dispensing nozzles 31 are previously formed at predetermined intervals as shown in FIG. As shown in FIG. 6, the sealant layers on the inner surface thereof are made to run out of each other, and a pair of oppositely facing each other is formed so as to correspond to the required inner contour portion shape of the pouring nozzle 31. A heat guide with a hot plate, and in or around the heat seal portion, in the figure, a tear guide rod 32 corresponding to the required outer contour shape of the dispensing nozzle 31 extending into the heat seal portion, for example, perforated It is possible to carry out by forming a tear-inducing ridge composed of perforations, slit-shaped cuts and the like together with some uncut portions 33.

  In this case, the tear guide rod 32 is formed on the side edge of the pouring nozzle 31 on the base side which is heat-sealed to the packaging film 1 without forming a heat-sealing portion with respect to the half-folded laminated film. Therefore, as is apparent from FIG. 6 (b) showing the pouring nozzle 31 separated by the tear guide rod 32, the pouring nozzle 31 opens to the outside only at the side edge position.

  By the way, since the sealant layer on the inner surface of the pouring nozzle 31 has physical properties that are heat-sealed at a higher temperature than the sealant layer on the outer surface, the pouring of the nozzle film 2 manufactured as described above is performed. When the exit nozzle 31 is heat-sealed to the packaging film 1 at a lower temperature with the sealant layer on its outer surface as described with reference to FIG. There is no possibility that the sealant layers on the inner surface of the discharge nozzle itself are heat-sealed. This is because the discharge nozzle 31 is bonded to the packaging film 1 as shown in FIG. The packaging film 1 is folded in half in the width direction, and the other side of the packaging film 1 is sealed with an inner surface sealant layer on the inner surface of one side of the packaging film 1 and The sealing film is heat-sealed to the respective sealant layer on the other outer surface of the pouring nozzle 31, and the pouring nozzle 31 is bonded in a liquid-tight manner between the respective sides of the packaging film 1 to form a packaging film. The same applies to the case where 1 is formed in a cylindrical shape that allows filling of an object to be packed therein.

  By the way, the heat seal area | region in heat-sealing the pouring nozzle 31 to the one side part of the packaging film 1 can be made into the area | region which gives a mesh in FIG. 7, for example, The remaining part of the pouring nozzle 3 facing the one side surface of the packaging film 1 is heat-sealed to the other outer surface of the pouring nozzle 3 on the other side part of the packaging film 1. In doing so, it is heat-sealed to the sealant layer on one side surface.

  Moreover, in the place shown in the figure, the heat sealing posture of the dispensing nozzle 31 to the packaging film 1 is a posture in which the tip portion protrudes laterally from the side edge of the packaging film 1.

It is a front view which shows embodiment of the apparatus which concerns on this invention. It is a side view which follows the II-II line of FIG. It is a principal part expanded horizontal fragmentary sectional view of a heat roll. 1 is a perspective view schematically showing an embodiment of a method according to the present invention. It is a diagram which shows the adjustment example of the delivery driving | running | working of a nozzle film in heat-sealing an extraction nozzle to the film for packaging. It is explanatory drawing which shows the manufacturing method of a nozzle film. It is a figure which illustrates the heat seal area | region to the one side part of the film for packaging of the extraction nozzle.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Packaging film 2 Nozzle film 3, 7, 9, 10, 16 Guide roll 4 Winding roll 5 Feeding shaft 6 Heat roll 8 Feed roll 11 Crimping roll 12 Registration mark sensor 13 Separation roll 14 Unnecessary part 15 Winding shaft 21 Center Shaft 22 Electric heaters 23, 24 Flange member 25 Thermal insulation sleeve 26 Thermal insulation support member 31 Outlet nozzle 32 Tear guide rod 33 Uncut portion

Claims (5)

A nozzle film in which a number of dispensing nozzles are formed in advance is fed out and run on a continuously running packaging film, and the base of each dispensing nozzle is placed on one of the outer surfaces of the packaging film. A method of attaching the pouring nozzle to the packaging film, in which the pouring nozzle is bonded to the packaging film, and unnecessary portions of the nozzle film are separated from the pouring nozzle and removed. The method for mounting the dispensing nozzle according to claim 1, wherein the dispensing nozzle is heat-sealed on the packaging film in a protruding posture toward the side thereof. Fold the packaging film with the dispensing nozzle bonded and left in the width direction, and connect the inner surface of the other side of the packaging film to the inner surface of one side and the other of the dispensing nozzle. The method for attaching a dispensing nozzle according to claim 1 or 2, wherein each of the surfaces is heat-sealed. The inner surfaces of the half-folded laminated films folded in the width direction are heat-sealed corresponding to the inner contour shape of the pouring nozzle, and the heat sealing portion corresponds to the outer contour shape of the pouring nozzle. The method for attaching a dispensing nozzle according to any one of claims 1 to 3, wherein the nozzle film on which the tear-inducing wrinkles are formed is run out of the packaging film. A feeding shaft that supports a winding roll of a nozzle film in which a large number of dispensing nozzles are formed in advance, a feed roll that draws the nozzle film from the winding roll on the feeding shaft at a required speed, and a continuous running path of the packaging film A hot roll that is always in contact with the packaging film, and is moved forward and backward with respect to the hot roll, pressing the outer surface of the nozzle film against the surface of the packaging film on the hot roll, and a dispensing nozzle A pressure roll that joins the film to the packaging film by heat sealing, a separation roll that separates the unnecessary portion of the nozzle film from the dispensing nozzle after the dispensing nozzle is joined to the packaging film, and an unnecessary portion of the nozzle film A device for attaching a pouring nozzle to a packaging film comprising a winding shaft.

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