JP2005153235A - Method and apparatus for manufacturing packaging bag with chuck - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To properly and efficiently manufacture a packaging bag with a chuck having a structure wherein the chuck is closed properly. <P>SOLUTION: This manufacturing apparatus B is equipped with a former for forming a packaging film 5 into a cylindrical shape in a state that the first and second side edge parts 5a and 5b of the packaging film 5 are overlapped with each other and used for manufacturing the packaging bag with the chuck wherein a pair of chuck constituting members 30a and 30b capable of being locked and unlocked mutually are joined to the first and second side edge parts 5a and 5b. This manufacturing apparatus B is further equipped with a chuck supplying/joining means for supplying a pair of the chuck constituting members 30a and 30b so as to overlap them with the first side edge part 5a in a mutually locked state before the packaging film 5 is formed into the cylindrical shape by the former to join the chuck constituting member 30a to the first side edge part 5a and a joining means 80B for joining the chuck constituting member 30b to the second side edge part 5b of the packaging film 5 simultaneously with or after forming the packaging film 5 into the cylindrical shape by the former. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a method and apparatus for manufacturing a zippered packaging bag utilized to contain wet tissue and other desired articles.

  Some packaging bags are provided with a chuck at the edge of the opening. The chuck comprises, for example, a concave groove having a concave groove and an engaging protrusion having a convex portion that can be engaged with the concave groove, and an airtight seal is possible by engaging them ( For example, see Patent Document 1). In such a packaging bag with a zipper, the inside can be sealed using a zipper, so that, for example, when a wet tissue is accommodated, it is possible to prevent the drying, and this is convenient.

  Patent Document 1 describes a method for manufacturing a packaging bag with a chuck as described above. In this method, first, as a packaging film, a film in which a groove groove of a chuck is bonded to one side edge portion and a chuck engaging protrusion is bonded to the other side edge portion is prepared in advance. deep. And when actually manufacturing a packaging bag, the said packaging film is formed into a cylinder shape using a former | foamer like the bag-making method of a pillow system, for example. When the packaging film is formed into a cylindrical shape, both side edges of the packaging film are overlapped with each other, and at that time, the groove groove and the engagement protrusion of the chuck are engaged.

JP-A-8-91429

  However, in the above prior art, the groove grooves and the engaging protrusions of the chuck that have been separated in advance are engaged when the packaging film is formed into a cylindrical shape. It is not easy to accurately align the engagement protrusions with the engagement protrusions, and it has been quite difficult to properly align and engage them. In particular, the concave groove and the engaging protrusion are generally formed in a relatively small width, and it is difficult to engage them even when their positional deviation is relatively small. It is. Further, when the packaging film is formed into a cylindrical shape using the former, the packaging film is likely to be shaken. Therefore, it has been more difficult to properly engage the groove and the engaging protrusion. When the manufacture of the packaging bag with a chuck is finished, it is desirable that the chuck is in a closed state, and in the prior art, there are many cases where such a request cannot be accurately met.

  Moreover, in the said prior art, the groove groove of a chuck | zipper and the engagement protrusion are joined beforehand to the both-sides edge part of the film for packaging. Therefore, when this packaging film is rolled up so as to be suitable for transportation, storage, or setting in a bag making apparatus, the groove groove and the engaging protrusion are caused by the winding pressure. There was also a possibility that would collapse.

  The present invention has been conceived under the circumstances described above, and makes it possible to appropriately and efficiently manufacture a packaging bag with a chuck having a structure in which a chuck is properly closed. That is the issue.

  In order to solve the above problems, the present invention takes the following technical means.

  According to a first aspect of the present invention, there is provided a method for manufacturing a packaging bag with a chuck, wherein the packaging film is formed into a cylindrical shape by overlapping the first and second side edges of the packaging film. For manufacturing a packaging bag with a chuck, which has a forming step to be formed and a pair of chuck constituent members which can be engaged with and disengaged from each other are provided on the first and second side edges of the packaging film. In the method, before the forming step, the pair of chuck constituent members are supplied to be overlapped with each other on the first side edge of the packaging film while being engaged with each other, and the pair of chuck constituent members At the same time or after the step of joining one of the first side edge to the first side edge and the forming step, the other of the pair of chuck components is connected to the second of the packaging film. It is characterized by having a step of bonding the edge portion.

  According to such a configuration, a packaging bag with a chuck in which a pair of chuck constituent members are respectively joined to the first and second side edges of the packaging film and the packaging film is cylindrical is appropriate. To be manufactured. In addition to this, the following effects can be obtained.

  That is, since the pair of chuck constituent members are already engaged with each other at the stage of joining to the packaging film, the pair of chuck constituent members that are separated from each other are engaged unlike the conventional technique. The process of making it unnecessary is unnecessary. Therefore, it is possible to eliminate the possibility of manufacturing the packaging bag with a chuck in a state where the chuck is not properly closed. In addition, during the bag making process, consideration for engaging the pair of chuck constituent members is unnecessary, so that the work can be facilitated accordingly. Therefore, productivity can be improved compared with the said prior art. Furthermore, in the present invention, in order to attach the chuck to the packaging film in the manufacturing stage of the packaging bag with a chuck, the packaging film without the chuck is used. For this reason, unlike the said prior art, when the packaging film provided with the chuck | zipper is wound up in roll shape, the malfunction that this chuck | zipper will be crushed does not occur.

  As a further important effect, according to the present invention, the process of joining the chuck to the packaging film is performed in two steps, and in both joining processes, the chuck and the packaging film are so high. There is no need to position with accuracy. The chuck is already joined to the first side edge of the packaging film before the packaging film is formed into a cylindrical shape, and when the packaging film is formed into a cylindrical shape. The relative positional relationship between the packaging film and the chuck does not shift. Therefore, the chuck can be easily and properly joined to the packaging film.

  In a preferred embodiment of the present invention, in the forming step, the first and second side edges of the packaging film are overlapped in a hand-glued shape, and the first and second side edges are overlapped. Then, the step of laying along the cylindrical portion of the packaging film is performed, and the joining step of the other of the pair of chuck constituent members and the second side edge is performed while maintaining this state. According to such a configuration, the other of the pair of chuck constituent members and the second side edge of the packaging film are joined in a stable state, and this joining operation can be performed more appropriately. . After forming the packaging film into a cylindrical shape, the first and second side edges may be laid along the cylindrical portion of the packaging film and the packaging film may be welded and sealed. Is optimal for stabilizing the position of the first and second side edges in such a case.

  An apparatus for manufacturing a packaging bag with a chuck provided by the second aspect of the present invention is configured such that the packaging film is formed into a cylindrical shape by overlapping the first and second side edges of the packaging film with each other. For manufacturing a packaging bag with a chuck, comprising a former for forming and having a pair of zipper constituent members detachable from each other provided at the first and second side edges of the packaging film In the manufacturing apparatus, before the packaging film is formed into a cylindrical shape by the former, the pair of chuck components are overlapped with each other on the first side edge of the packaging film. And a chuck supply / joining means for joining one of the pair of chuck constituent members to the first side edge, and the packaging film formed into a cylindrical shape by the former. Simultaneously or thereafter Once, and the other of the pair of chuck components is characterized in that it comprises a and a bonding means for bonding the second side edge of the packaging film.

  According to such a structure, the manufacturing method of the packaging bag with a chuck | zipper provided by the 1st side surface of this invention can be implemented appropriately, and the effect similar to having mentioned above is acquired.

  Other features and advantages of the present invention will become more apparent from the following description of the embodiments of the invention.

  Hereinafter, preferred embodiments of the present invention will be specifically described with reference to the drawings.

  First, for easy understanding, an example of a packaging bag with a chuck manufactured by the manufacturing method of the present invention will be described prior to the description of the manufacturing method and apparatus of the present invention.

  1-3 has shown an example of the packaging bag with a chuck | zipper. The packaging bag A with a zipper shown in these drawings includes a bag main body portion 20 that covers the entire article to be packaged 1, a chuck 3, and an interior film 4 disposed in the bag main body portion 20. Yes. The package 1 is, for example, a plurality of wet tissues, and these wet tissues are folded in a Z shape and stacked so as to be taken out one by one from above.

  The bag body 20 has a substantially rectangular parallelepiped shape with a substantially rectangular shape in plan view, and a laminated film 5 having a heat-synthetic synthetic resin as an inner layer is formed into a rectangular tube shape, and a pair is formed at both ends in the longitudinal direction. The lateral seal portion 21 is provided to form a bag. A belt-like protrusion 51 is provided on the upper surface of the bag body 20. Both ends in the longitudinal direction of the belt-like projecting portion 51 are connected to the pair of lateral seal portions 21, and the belt-like projecting portion 51 is laid down along the upper surface portion of the bag main body portion 20. As clearly shown in FIG. 2, the belt-like protrusion 51 is a portion formed by superimposing the first and second side edges 5a and 5b of the film 5 in the shape of a palm. The inside of the base of the belt-like protrusion 51 is a take-out port 52 for the article 1 to be packaged. The take-out port 52 is in a closed state, but will be opened when the first and second side edge portions 5a and 5b are separated, as will be described later.

  The chuck 3 is configured by combining a concave groove 30 a made of synthetic resin and an engaging protrusion 30 b, and is provided in the belt-like protruding portion 51. The structures of the groove 30a and the engagement protrusion 30b are the same as those conventionally known. The groove 30a has a groove extending linearly, and the inner surface of the first side edge 5a. It is welded to. The engaging protrusion 30b has a linearly extending convex portion that allows the concave groove 30a to be engaged with and detached from the concave groove, and is engaged with the concave groove 30a. 2 is welded to the inner surface of the side edge 5b.

  The belt-like projecting portion 51 is provided with a vertical seal portion 23, a pair of cuts 24, a pair of auxiliary seal portions 25, and an opening notch 26. The vertical seal portion 23 is a portion where the ends of the first and second side edge portions 5 a and 5 b of the film 5 are heat sealed, and extends in the longitudinal direction of the belt-like protrusion 51. The pair of cuts 24 are provided at an appropriate interval in the longitudinal direction of the belt-like protrusion 51 and are formed so as to extend from the distal end of the belt-like protrusion 51 toward the base end side. The chuck 3 has a configuration in which two portions in the longitudinal direction are partially cut by the pair of cuts 24. Each auxiliary seal portion 25 is a portion of the first and second side edge portions 5a and 5b that are heat-sealed at portions corresponding to the edge portions of the notches 24. The auxiliary seal portion 25 plays a role of improving the airtightness of the portion where the notch 24 is provided. The opening notch 26 is a part for breaking a part of the belt-like protrusion 51 and is formed to be connected to one of the pair of cuts 24.

  The interior film 4 is intended to assist in optimizing the removal of a part of the article 1 to be packaged from the takeout port 52, and is disposed in the bag body 20 and above the article 1 to be packaged. positioned. As shown in FIG. 3, both side edges 4 a of the interior film 4 are sandwiched and sealed between portions of the film 5 at the lateral seal portion 21 of the bag body portion 20. With this structure, the interior film 4 is not displaced with respect to the bag body 20. A perforation line 40 is formed in a portion of the interior film 4 corresponding to a position immediately below the take-out port 52. The interior film 4 can form an opening at the position where the perforation line 40 is formed, and the package 1 is taken out from the opening.

  This packaging bag A with a chuck can be used as follows. That is, first, as shown in FIG. 4, the region between the pair of cuts 24 in the belt-like projecting portion 51 is set up. In this state, the raised portion of the belt-like protrusion 51 is broken along the position indicated by the imaginary line n2 in FIG. Thereby, the front-end | tip part of the strip | belt-shaped protrusion part 51 can be opened. Next, when the first and second side edge portions 5a and 5b of the belt-like protruding portion 51 are picked and pulled in the direction of the arrow N1 in the figure, the groove 30a and the engaging protrusion 30b of the chuck 3 are detached. Then, if the formation location of the perforation line 40 of the interior film 4 is broken and opened, the package 1 can be pulled out of the bag main body 20 from the opening as shown in FIG. Since the width of the opening portion of the interior film 4 is narrow, it is convenient that the plurality of wet tissues are simultaneously pulled out when the packaged object 1 is a wet tissue folded. After the wet tissue is pulled out by a necessary amount, the take-out port 52 can be sealed by closing the chuck 3. Therefore, it is suitable and more convenient for preventing wet tissue from drying and preventing dust from entering the bag body 20.

  Next, an example of a production apparatus suitable for producing the above-described packaging bag A with a chuck will be described with reference to FIGS. In the following description of the embodiment, the same reference numerals as those used for the packaging bag A with a chuck are used for the elements corresponding to the packaging bag A with a chuck described above.

  As clearly shown in FIG. 6, the manufacturing apparatus B of this embodiment includes a pillow packaging machine 6, a chuck supply unit 7 </ b> A, an interior film supply unit 7 </ b> B, and two chuck sealers 80 </ b> A and 80 </ b> B. . The basic structure of the pillow wrapping machine 6 is the same as that of a conventionally known pillow wrapping machine, and a former 60 for forming a long strip-shaped packaging film 5 fed out from the take-up roll R1 into a cylindrical shape, After the packaging film 5 is formed into a cylinder after the supply conveyor 61 that conveys the packaging object 1 so that a plurality of the packaging objects 1 are inserted at regular intervals from the front end opening, the packaging film 5 is A pair of welded cut sealers 62 are provided that are thermally welded between the packages 1 and cut by an internally mounted cutter.

  The chuck supply unit 7A is a part that pulls out the long chuck 3 from the reel R2 and supplies the chuck 3 and guides it so as to overlap the packaging film 5 before the former 60. In the chuck supply portion 7A, as shown in FIG. 8, the chuck 3 is supplied to the lower surface side of the first side edge portion 5a in a state where the groove groove 30a and the engagement protrusion 30b are engaged with each other. It has come to be.

  The chuck sealer 80A is provided above the transport path of the packaging film 5 and at a position preceding the former 60, and the first side edge 5a of the packaging film 5 and the chuck 3 will be described later. And a part to be welded. Below the chuck sealer 80A, when the welding operation is performed by the sealer 80A, the first side edge portion 5a is supported, and between the groove 30a and the engaging protrusion 30b of the chuck 3 is supported. A support plate 81A for allowing a part to enter is provided. The chuck sealer 80A includes a heater for heating. However, in the present invention, various other types of sealers can be used as the sealer for joining the chuck and the packaging film. is there. The same applies to the chuck sealer 80B. The same applies to other sealers for joining the packaging films together.

  In this pillow packaging machine 6, when the packaging film 5 is formed into a cylindrical shape by the former 60, as shown in FIG. 9, the first and second side edges 5a, 5b of the packaging film 5 are mutually connected. An overlapped belt-like protrusion 51 is formed. In addition, the belt-like protruding portion 51 has a lateral posture (substantially horizontal posture) in which the second side edge portion 5b is located above the first side edge portion 5a above the cylindrical portion of the packaging film 5. It is configured to be. The chuck sealer 80B is positioned above the belt-like protrusion 51 and is configured to be able to weld the second side edge 5b and a later-described portion of the chuck 3.

  A cooler 81 is provided above the former 60 and downstream of the chuck sealer 80B. The cooler 81 is for quickly cooling a portion welded by the chuck sealer 80B. A welding prevention plate 82 and a support plate 83 are provided below the cooler 81 and the chuck sealer 80B. The welding prevention plate 82 and the support plate 83 are both fixedly supported by an appropriate bracket (not shown), and a part of the welding prevention plate 82 is first and second side edge portions. 5a and 5b, and between the concave groove 30a and the engaging protrusion 30b of the chuck 3 are provided. The support plate 83 is for supporting the belt-like protruding portion 51 so as not to be displaced downward when welding is performed by the chuck sealer 80B. The cylindrical shape of the first side edge portion 5a and the packaging film 5 is supported by the support plate 83. It has entered between the parts. However, the support plate 83 extends from below the chuck sealer 80B to the front of the welding cut sealer 62, and in addition to the welding operation by the chuck sealer 80B, the belt-like protruding portion 51 is also used when performing other operations described later. It is comprised so that it may support.

  Sealers 84 and 85 and a notch former 86 are provided on the rear stage of the chuck sealer 80B and the cooler 81 above the conveyance path of the cylindrical packaging film 5. The sealer 84 is for forming the vertical seal portion 23 of the packaging bag A with a chuck, and as shown in FIG. 10, the tips of the first and second side edge portions 5a and 5b of the belt-like protruding portion 51 are provided. Can be welded between the support plate 83 and heated. The sealer 85 is for forming the auxiliary seal portion 25 of the packaging bag A with a chuck, and sandwiches the first and second side edge portions 5a and 5b between the support plate 83 and FIG. As shown in FIG. 5, the portion where the cut 24 is formed thereafter can be partially heated and welded. The notch forming device 86 is for forming a pair of notches 24 and an opening notch 26. For example, a cutting blade having a shape corresponding to the notch 24 and the opening notch 26 is provided so as to be movable up and down. Sometimes, the abutting portions can be cut off by abutting against the first and second side edge portions 5a and 5b.

  As shown in FIG. 6, the interior film supply unit 7 </ b> B pulls out the long strip-like interior film 4 from the take-up roll R <b> 3 and guides it through a plurality of guide rollers 72, thereby forming the former 60. It is the part which was made to supply in the cylindrical part of the film 5 for packaging from the front-end | tip opening part. However, the interior film 4 does not include the perforation line 40 in the initial state of being wound around the winding roll R3. A perforation forming roller 73 is provided in the conveyance path of the interior film 4, and the perforation line 40 is formed by the operation of the roller 73. According to such a configuration, the specification of the perforation line 40 can be easily changed by changing the position and shape of the roller 73. However, instead of such a configuration, it is of course possible to use the interior film 4 in which the perforation line 40 is formed from the beginning.

  Next, an example of a method for manufacturing the packaging bag A with a chuck using the manufacturing apparatus B described above will be described.

  First, in FIG. 6, the packaging film 5 is unwound from the take-up roll R <b> 1 and transported toward the former 60, and thereby the packaging film 5 is made cylindrical. A plurality of articles 1 to be packaged are sequentially supplied from the supply conveyor 61 into the cylindrical packaging film 5, and the interior film 4 is also supplied so as to be positioned above the articles 1 to be packaged. On the other hand, the chuck 3 is fed out from the reel R2 while the concave groove 30a and the engaging protrusion 30b are engaged with each other, and supplied to the conveyance path of the packaging film 5. Thereby, at the position before the former 60, as shown in FIG. 8, for example, the groove 30a of the chuck 3 is overlaid on the lower surface of the first side edge 5a of the packaging film 5, and this groove The strip 30a is welded to the lower surface of the first side edge portion 5a. This welding is performed by sandwiching a portion of the portion where the first side edge portion 5a and the groove 30a overlap each other near the tip of the first side edge portion 5a between the chuck sealer 80A and the support plate 81A. This is done by heating. Unlike the present embodiment, if the entire groove 30a is heated, the groove 30a and the engaging protrusion 30b may be unduly welded. However, according to the above method, such a risk may occur. There is no. Moreover, since the support plate 81A has entered between the groove 30a and the engagement protrusion 30b, it plays the role of preventing these welds.

  As described with reference to FIG. 9, when the packaging film 5 is formed into a cylindrical shape using the former 60, the belt-like protrusion 51 is formed in a substantially horizontal posture. Due to the formation of the belt-like protrusion 51, the engaging protrusion 30b of the chuck 3 comes into contact with the inward surface (downward surface) of the second side edge 5b of the packaging film 5, and this portion is welded. This welding is performed by sandwiching a portion of the portion where the second side edge 5b and the engaging protrusion 30b overlap each other near the tip of the belt-like protrusion 51 between the chuck sealer 80B and the welding prevention plate 82. This is done by heating. If it does in this way, similarly to the case of welding of the ditch | groove groove | channel 30a described previously, it is prevented that the ditch | groove groove | channel 30a and the engagement protrusion 30b are welded unjustly. Since the welding prevention plate 82 is inserted into the belt-like protruding portion 51, the first and second side edge portions 5a and 5b are also appropriately prevented from welding. Further, in the portion where the welding is performed and in the vicinity thereof, the entire belt-like protruding portion 51 is stably supported by the support plate 83, and the welding prevention plate 82 supports the first side edge portion 5a. Therefore, the above welding is performed more appropriately.

  In the stage subsequent to the welding work position, the welded portion is cooled using a cooler 81. If the welded portion is positively cooled in this way, contact with the first side edge 5a before the welded portion is sufficiently cooled is avoided. Therefore, the operating speed of the manufacturing apparatus B can be increased. In the subsequent stage of the cooler 81, as described with reference to FIG. 10 or FIG. 7, the sealer 85 is used, and the sealer 85 is used to form the vertical seal portion 23 at the distal end portion of the belt-like protruding portion 51. Thus, an operation of sequentially forming a plurality of auxiliary seal portions 25 and an operation of sequentially forming a plurality of sets of cuts 24 and opening notches 26 at regular intervals using a cut forming device 86 are performed. Even when these operations are performed, the belt-like projecting portion 51 can be stably supported by the support plate 83, and therefore, it is possible to appropriately perform these processes.

  Further downstream of the above-described various work positions, the packaged film 5 is welded and sealed between the objects to be packaged 1 by the welding and cutting sealer 62. The portion where the welding seal is made becomes the horizontal seal portion 21, and the inner film 4 and the packaging film 5 are also welded in the horizontal seal portion 21.

  According to the manufacturing method described above, the packaging bag A with a chuck described with reference to FIGS. 1 to 5 is appropriately manufactured. However, the chuck 3 has a belt-like protrusion although the region near the tip of the belt-like protrusion 51 (s1 portion in FIG. 5) of the concave groove 30a and the engaging protrusion 30b is welded to the packaging film 5. A portion of the portion 51 near the base end (portion s2 in FIG. 5) is not welded. On the other hand, when opening the belt-like protruding portion 51, the portion closer to the tip of the belt-like protruding portion 51 than the chuck 3 is picked and opened by the finger, and the force at that time is applied to the groove groove 30a and the engaging protrusion 30b. Of these, the action is concentrated on the portion s1 near the tip of the belt-like protrusion 51. Therefore, as described above, even if the portion s2 near the base end of the belt-like protruding portion 51 is in a non-welded state, this particularly impairs the reliability of the chuck 3 mounting reliability and the sealing function. There is no.

  In the manufacturing method described above, when the chuck 3 is welded to the packaging film 5, the groove 30a and the engaging protrusion 30b are already engaged. There is no need to engage the groove 30a and the engaging protrusion 30b. Therefore, according to the above manufacturing method, compared with the conventional manufacturing method in which the constituent members of the chuck are engaged during the manufacturing process, the manufacturing operation of the packaging bag A is facilitated by that amount, and the constituent members are also connected. There is no risk of defective products that are not properly engaged. Furthermore, the operation of welding the chuck 3 to the packaging film 5 is performed twice before and after the forming of the packaging film 5 into a cylindrical shape using the former 60. In any of these two welding operations, it is not necessary to align the packaging film 5 and the chuck 3 with a high degree of accuracy. For this reason, according to the above manufacturing method, the productivity of the packaging bag A with a chuck can be increased.

  The chuck 3 is welded in the process of transporting the packaging film 5. Therefore, unlike the case of using the packaging film with the chuck welded from the beginning, when the packaging film 5 is wound as the winding roll R1, the chuck 3 is not likely to be crushed by the winding pressure. . Since the reel R2 has only the chuck 3 wound thereon, it can be appropriately wound so that the chuck 3 is not crushed, and can have excellent handling flexibility. It is.

  When the chuck 3 is welded by the chuck sealer 80B, the belt-like projecting portion 51 is placed almost horizontally, so that the welding work can be performed more appropriately as described below. That is, in the present invention, as shown in FIG. 11A, when the engagement protrusion 30b of the chuck 3 is welded to the second side edge 5b of the belt-like protrusion 51, the belt-like protrusion 51 is packaged. You may make it stand from the cylindrical part of the film 5 for a film. Even when the belt-like protrusion 51 is erected in this way, the engagement protrusion 30b is moved to the second side edge by using the sealer 80B, for example, by causing the welding prevention plate 82 to enter the belt-like protrusion 51. It is possible to weld it to 5b. However, as shown in FIG. 4B, the welding sealing and cutting work by the welding cutting sealer 62 is performed at a stage after the place where the sealer 80B is provided. It is performed in the state where it was laid down. Therefore, if the belt-like protrusion 51 is erected at the sealing work place by the sealer 80B, the belt-like protrusion 51 is forcibly laid in the vicinity of the welded cut sealer 62 (for example, the portion indicated by the arrow n1 in the figure). As a result, the belt-like protruding portion 51 may fluctuate in the vertical direction, and its height may become unstable. On the other hand, as in the above embodiment, if the belt-like protrusion 51 is laid down substantially horizontally during welding of the engaging protrusion 30b and the state is maintained thereafter, The height is stable, and the welding operation can be performed appropriately.

  The content of the present invention is not limited to the above-described embodiment. The specific structure of each process in the manufacturing method of the packaging bag with a chuck | zipper which concerns on this invention can be changed variously. Similarly, the specific structure of each part in the manufacturing apparatus for a packaging bag with a chuck according to the present invention can be varied in design in various ways.

  The chuck referred to in the present invention has a pair of constituent members, and these are configured to be able to engage with each other. The chuck includes the concave groove and the engaging protrusion as described above. Although representative, the specific shape and material are not particularly limited. In addition, the chuck is generally used to improve the airtightness, but is not limited to this, and a chuck that does not have an airtight sealability can also be applied. The bonding between the chuck and the packaging film is not limited to welding by heating.

  The manufacturing method of a packaging bag with a zipper according to the present invention is not only applied as a packaging method for accommodating an article inside, but also used as a manufacturing method for a packaging bag without accommodating an article therein, that is, as a bag making method. It is also possible. Similarly, although the manufacturing apparatus for a packaging bag with a chuck according to the present invention can be configured as a packaging apparatus for packaging an article, it simply manufactures a packaging bag with a chuck without having such a function. It is also possible to configure as a bag making apparatus that simply does. The packaging bag with a zipper is suitable for storing wet tissue or the like, but is not limited to this, and can be used for other various articles and substances.

It is a perspective view which shows an example of the packaging bag with a chuck | zipper. It is II-II sectional drawing of FIG. It is III-III sectional drawing of FIG. It is a perspective view which shows the middle state at the time of handling the packaging bag with a chuck | zipper shown in FIG. It is sectional drawing which shows the handling state of the packaging bag with a chuck | zipper shown in FIG. It is a schematic side view which shows an example of the manufacturing apparatus of the packaging bag with a chuck | zipper which concerns on this invention. It is a principal part top view of the manufacturing apparatus of the packaging bag with a chuck | zipper shown in FIG. It is VIII-VIII sectional drawing of FIG. It is the IX-IX cross section perspective view of FIG. It is XX sectional drawing of FIG. (A) is principal part sectional drawing which shows other embodiment of this invention, (b) is a principal part side view which shows other embodiment of this invention.

Explanation of symbols

A. Packaging bag with zipper B Baking device for packaging bag with zipper 1 Package 3 Chuck 5 Packaging film 5a First side edge (of packaging film)
5b Second side edge (for packaging film)
6 Pillow packaging machine 7A Chuck supply part 30a Groove groove (chuck component)
30b engaging protrusion (chuck component)
51 Belt-like protrusion 60 Former 80A, 80B Chuck sealer

Claims (3)

Having a forming step of forming the packaging film into a cylindrical shape so that the first and second side edges of the packaging film are superposed on each other;
A method for producing a packaging bag with a chuck, wherein a pair of chuck constituent members detachable from each other is provided on the first and second side edges of the packaging film,
Before the forming step, the pair of chuck constituent members are supplied to be overlapped with each other on the first side edge of the packaging film, and one of the pair of chuck constituent members is supplied to the first side edge portion. Joining to the side edge of 1;
At the same time as or after the forming step, the step of joining the other of the pair of chuck constituent members to the second side edge of the packaging film;
The manufacturing method of the packaging bag with a chuck | zipper characterized by having this. In the forming step, the first and second side edge portions of the packaging film are overlapped in the form of a palm, and the first and second side edge portions are overlapped with the cylindrical portion of the packaging film. Let them lie alongside,
The manufacturing method of the packaging bag with a chuck | zipper of Claim 1 which performs the joining process of the other side of said pair of chuck | zipper structural member and said 2nd side edge part, maintaining this state. A former for forming the packaging film into a cylindrical shape so that the first and second side edges of the packaging film overlap with each other;
A manufacturing apparatus for manufacturing a packaging bag with a chuck, wherein a pair of chuck constituent members detachable from each other is provided on the first and second side edges of the packaging film,
Before the packaging film is formed into a cylindrical shape by the former, the pair of chuck components are supplied to be overlapped with each other on the first side edge of the packaging film, and Chuck supply / joining means for joining one of the pair of chuck constituent members to the first side edge portion;
A joining means for joining the other of the pair of chuck constituent members to the second side edge of the packaging film simultaneously with or after the packaging film is formed into a cylindrical shape by the former;
An apparatus for producing a packaging bag with a chuck, comprising:

Images