Belt-shaped member attaching device and belt-shaped member attaching method

Abstract

The strip-shaped member attachment device comprises a strip-shaped member supplying machine that supplies strip-shaped members in a strip-shaped member transport direction perpendicular to the body material transport direction, a strip-shaped member sealing machine that seals the strip-shaped members to the body material, a punching machine that forms punched portions in the body material and the strip-shaped members, a protective tape feeding machine that feeds a predetermined length of protective tape onto the body material and the strip-shaped members in the body material transport direction, a protective tape guide that guides the protective tape, a protective tape weakening line processing machine that forms weakening lines at predetermined intervals in the protective tape, and a protective tape sealing machine that seals the protective tape to the body material and the strip-shaped members.

Description

[Technical Field]

[0001] The present application relates to an apparatus and method for attaching a strap to the body material of a bag, such as plastic or paper. [Background technology]

[0002] Bags made of plastic, paper, or other materials can contain a variety of contents, including sweets, powders, granules, liquids, etc. Demand for re-openable bags is also increasing, and re-attachable zipper tape, for example, is one of the methods for re-opening bags.

[0003] One method for making bags with a strip-shaped member such as zipper tape involves attaching the strip-shaped member to the body material while making the bag. However, this method requires a device for attaching the strip-shaped member to the bag making machine, which tends to make the bag making machine larger and more complex.

[0004] On the other hand, there is also a bag making method in which a belt-shaped member is attached to the body material in advance and the body material is wound into a roll. In this method, since the belt-shaped member is attached to the body material in advance, a belt-shaped member attachment device is not required on the bag making machine, and bags with zipper tape can be made using a conventional bag making machine with a simple configuration.

[0005] In addition, in such bag-making methods using a bag body with a strip-shaped member such as zipper tape already attached, there are cases where the strip needs to be additionally processed, such as by sealing a protective tape onto the strip-shaped member attached to the bag body.

[0006] As shown in Patent Document 1, a process for sealing a protective tape to a belt-shaped member involves sealing the protective tape to a body material so as to cover the belt-shaped member from above.

[0007] However, Patent Document 1 does not provide any specific details about how the protective tape is cut, or what kind of base material it is supplied from to the body material for sealing, etc. Generally, when cutting the protective tape to a predetermined size, a certain degree of tension is required from the upstream and downstream sides, so punching the protective tape with a Thomson blade is suitable, but punching waste (excess material loss) is generated after punching. [Prior art documents] [Patent documents]

[0008] [Patent Document 1] Japanese Patent Application Laid-Open No. 2018-188196 Summary of the Invention [Problem to be solved by the invention]

[0009] The present application provides an apparatus and method that can attach protective tape to a belt-shaped member without wasting excess material when attaching the belt-shaped member to the body material of a bag. [Means for solving the problem]

[0010] The present application provides a strip-shaped member attachment device, The belt-shaped member attachment device comprises: a belt-shaped member supplying device that supplies a belt-shaped member to the body material that is intermittently conveyed in the body material conveying direction in a belt-shaped member conveying direction perpendicular to the body material conveying direction; a band-shaped member sealing machine for sealing the band-shaped member to the body material; a punching machine for forming punched portions in the body material and the belt-shaped member; a protective tape feeding device that feeds a predetermined length of protective tape onto the body material and the belt-shaped member in the body material conveyance direction; a protective tape guide for guiding the protective tape so that the punched portion is covered with the protective tape; a protective tape weakening line processing machine that forms weakening lines at predetermined intervals in the protective tape; and a protective tape sealing machine that seals the protective tape onto the body material and the belt-shaped member.

[0011] The protective tape weakened line processing machine includes a perforation blade for forming a weakened line and an actuator for moving the perforation blade, The belt-shaped member attachment device a protective tape receiving base for receiving the perforation blade; The protective tape receiving base may further include a body material guide for guiding the body material so that the body material is transported to the opposite side of the perforation blade.

[0012] The protective tape holder is It may have multiple holes for receiving multiple cutting edges of the perforation blade.

[0013] The present application also provides a method for attaching a belt-shaped member, The belt-shaped member attaching method includes: a belt-shaped member supplying step of supplying a belt-shaped member to the body material being intermittently transported in the body material transport direction in a belt-shaped member transport direction perpendicular to the body material transport direction; a band-shaped member sealing step of sealing the band-shaped member to the body material; a punching step for forming punched portions in the body material and the belt-shaped member; a protective tape feeding step of feeding a predetermined length of protective tape onto the body material and the belt-shaped member in a body material conveyance direction; a protective tape guiding step of guiding the protective tape so that the punched portion is covered with the protective tape; a protective tape weakened line processing step of forming weakened lines at predetermined intervals in the protective tape; and a protective tape sealing step of sealing the protective tape to the body material and the belt-shaped member.

[0014] The protective tape weakened line processing step forms a weakened line using a perforation blade, The belt-shaped member attachment method is as follows: The machine may include a body material guiding step for guiding the body material so that the body material is transported to the opposite side of the perforation blade relative to the protective tape receiving base that receives the perforation blade. [Brief explanation of the drawings]

[0015] [Figure 1] FIG. 1 is a front view showing a bag with a zipper tape according to a first embodiment. [Figure 2] FIG. 2 is a partial cross-sectional view taken along line II-II in FIG. [Figure 3] FIG. 3 is a partially enlarged front view showing a bag with a zipper tape. [Figure 4] 4 is a partial cross-sectional view taken along line III-III in FIG. 1, showing the bag with the zipper tape in a state in which the cutting tape is pulled up together with the tab. [Figure 5] FIG. 5 is a perspective view showing the bag with the zipper tape in a state where the cutting tape is pulled up together with the tab. [Figure 6] 6 is a partial cross-sectional view taken along line III-III in FIG. 1 showing the bag with the zipper tape in a state where the zipper tape has been opened. [Figure 7] FIG. 7 is a plan view showing the belt-shaped member mounting device. [Figure 8] FIG. 8 is a side view showing a part of the belt-shaped member attachment device. [Figure 9] 9A to 9D are side views showing the operations of the protective tape weakening line processing machine, the protective tape temporary fixing machine, and the protective tape pressing member. [Figure 10] FIG. 10A is a plan view showing a belt-shaped member and a protective tape sealed by a protective tape temporary sealing machine, and FIG. 10B is a plan view showing a belt-shaped member and a protective tape sealed by a protective tape sealing machine. [Figure 11] 11A and 11B are cross-sectional views showing the perforation blade and the protective tape receiving base. [Figure 12] 12A-12C are side views showing the operation of the protective tape. [Figure 13] FIG. 13 is a partial cross-sectional view of the second embodiment taken along line II-II in FIG. [Figure 14] FIG. 14 is a perspective view showing the bag with the zipper tape in the state where the cutting tape is pulled up together with the tab of the second embodiment. DETAILED DESCRIPTION OF THE INVENTION

[0016] DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, an embodiment of a belt-shaped member attaching device and a belt-shaped member attaching method according to the present invention will be described with reference to the drawings.

[0017] First Embodiment [Zippered bag 1] 1 to 6, a zipper tape bag 1 (hereinafter sometimes simply referred to as "the bag") including a zipper tape 2 will be described. The width direction X, longitudinal direction Y, and thickness direction Z of the bag 1 are perpendicular to one another.

[0018] As shown in Figure 1, the bag 1 comprises rectangular first body material 11 and second body material 12 (Figures 2 and 4) facing each other in the thickness direction Z. The body materials 11, 12 are made of plastic film. In this embodiment, the body materials 11, 12 are made of a single piece of plastic film, which is folded and bonded to the back side (so-called palm-to-back bonding). In this embodiment, the body material 11 is the front body material, and the body material 12 is the back body material having a back seal portion (not shown). It is also possible for the body material 11 to be made of a single piece of film, and the body material 12 to be made of another single piece of film.

[0019] The body materials 11, 12 have a bottom seal portion 13 and a top seal portion 14 that are parallel to the width direction X. The seal portions 13, 14 are formed by heat-sealing the top and bottom of the body materials 11, 12 to each other. The body materials 11, 12 may also be constructed by layering a sealant on a base material made of a paper material.

[0020] Furthermore, the bag 1 is provided with a zipper tape 2 and a cutting tape 3 extending in the width direction X on the side of the top seal portion 14. In this embodiment, the zipper tape 2 and the cutting tape 3 are integrally formed.

[0021] 2, the zipper tape 2 is disposed between the body material 11 and the body material 12. The zipper tape 2 includes a male fastener 21 and a female fastener 22. The male fastener 21 and the female fastener 22 extend in the width direction X.

[0022] The male fastener 21 has an attachment base 21A and a protrusion 21B. The female fastener 22 has an attachment base 22A and a recess 22B. The protrusion 21B and the recess 22B face each other in the thickness direction Z. The protrusion 21B and the recess 22B are made of an elastically deformable material such as synthetic resin, and are configured to be engageable and disengageable.

[0023] The mounting base 21A of the male fastener 21 is heat-sealed (thermally fused) to the body material 11. The end 221A of the mounting base 22A of the female fastener 22 is heat-sealed to the body material 11 between the top seal portion 14 and the mounting base 21A of the male fastener 21.

[0024] The cutting tape 3 is disposed between the mounting base 21A of the male fastener 21 and the end 221A of the mounting base 22A of the female fastener 22. The positional relationship between the male fastener 21 and the female fastener 22 may be reversed.

[0025] As shown in Figure 1, the bag 1 has a tab 4 on one side in the width direction X. The tab 4 is positioned so as to overlap the cutting tape 3. The tab 4 is formed by a first punched portion 41. The bag 1 also has a second punched portion 43 on the other side in the width direction X.

[0026] As shown in Figures 1 and 2, the first punched portion 41 and the second punched portion 43 are formed by punching out the body material 11, the cut tape 3, the mounting base 21A of the male fastener 21, and the mounting base 22A of the female fastener 22.

[0027] The first punched portion 41 is a tab-shaped cutout resembling the letter "C" in a plan view, and the cutting tape 3 is placed in the opening of the "C." A part of the cutout is formed at a location where the body material 11 and the cutting tape 3 are overlapped with each other in the thickness direction Z.

[0028] The second punched portion 43 is a straight cutout extending in the longitudinal direction Y (a direction perpendicular to the peeling direction of the tab 4). A part of the cutout is formed at a location where the body material 11 and the cutting tape 3 are overlapped in the thickness direction Z, and extends across the entire width of the cutting tape 3.

[0029] 1 and 2, the bag 1 is provided with a protective tape 5. The protective tape 5 is provided to prevent foreign matter from entering the inside of the bag 1 from the outside through the first punched section 41 and the second punched section 43. For this reason, the protective tape 5 is disposed between the body material 11 and the body material 12. Two protective tapes 5 are provided, one protective tape 5 being provided for the first punched section 41 and the other protective tape 5 being provided for the second punched section 43. As shown in FIG. 3, the protective tape 5 is further sealed to the body material 11 by a surrounding seal section 117b so as to cover the entire width of the zipper tape 2 surrounding the first punched section 41 / second punched section 43.

[0030] [How to open bag 1 with zipper tape] The procedure for opening the bag 1 with the zipper tape will be described with reference to FIGS.

[0031] 4 and 5, the user pulls up the tab 4 in the thickness direction Z. Because the first punched portion 41 is punched through the body material 1, the cutting tape 3, the mounting base 21A of the male fastener 21, and the mounting base 22A of the female fastener 22, the tab 4 can be easily pulled up in the thickness direction Z by pressing from the side of the body material 12. The cutting tape 3 is made of a material that is stronger than the body material 11. Therefore, when the user pulls the tab 4 in the opening direction, the body material 11 is torn by the cutting tape 3 that is connected to the first punched portion 41.

[0032] As shown in Figure 5, the user pulls up the cutting tape 3 together with the tab 4, tearing the body material 11 at the position of the cutting tape 3. When the tear reaches the second punched portion 43, which has been formed in advance by punching as a straight cut, the body material 11 and the torn portion of the cutting tape 3 separate from the bag 1, and the bag 1 is opened. As shown in Figure 6, the opened bag 1 can be sealed and opened again by engaging and disengaging the male fastener 21 and female fastener 22 of the zipper tape 2. The positional relationship between the male fastener portion 21 and the female fastener portion 22 may be reversed.

[0033] [Belt-shaped member attachment device 100 and belt-shaped member attachment method] 7 to 12, a belt-shaped member attaching device and method for attaching a belt-shaped member 23 to the body material 13 that will become the body material 11 and / or 12 of the bag 1 with zipper tape will be described.

[0034] 7, in this embodiment, a bag making machine that produces bags 1 with zipper tape, or a body material manufacturing machine that produces body materials 11, 12 for bags 1 with zipper tape, is equipped with a strip-shaped member attachment device 100. The bag making machine or body material manufacturing machine is equipped with a conveying device (including, for example, a drive roller), and intermittently conveys web-like body material 13 made of a sheet of plastic film or paper in body material conveying direction 13X (length direction 13a of body material 13). Therefore, body material 13 is repeatedly conveyed and stopped temporarily.

[0035] 7, the bag making machine folds and joins both sides of body material 13 in width direction 13b toward the front side of FIG. 7 along folding lines 13c, 13d in body material length direction 13a (so-called palm-to-back joining) to form body materials 11 and 12 of bag 1 in the form of a web. The bag making machine manufactures bag 1 so that the top surface of body material 13 (the front side of FIG. 7) forms the inner surface of bag 1, and the bottom surface of body material 13 (the back side of FIG. 7) forms the outer surface of bag 1. The bag making machine is equipped with a cross-cutting device downstream thereof, which cross-cuts body material 13 in width direction 13b each time it is intermittently fed, thereby forming bag 1.

[0036] The strip-shaped member attaching device 100 includes a strip-shaped member supplying machine 102. The strip-shaped member supplying machine 102 transports a long strip-shaped member 23 equipped with a zipper tape 2 and a cutting tape 3 in a strip-shaped member supplying direction 23X (length direction 23a of the strip-shaped member 23) perpendicular to the body material transporting direction 13X, and supplies it to the upper surface of the body material 13.

[0037] Although not shown, the strip-shaped material supplying machine 102 includes a chuck for gripping the strip-shaped material 23, a first actuator for operating the chuck, and a second actuator for moving the chuck. The strip-shaped material supplying machine 102 grips the strip-shaped material 23 with the chuck and moves the gripping chuck in the strip-shaped material conveying direction 23X to convey the strip-shaped material 23 to a predetermined position on the upper surface of the body material 13. The strip-shaped material supplying machine 102 supplies the strip-shaped material 23 to the body material 13 at each intermittent feed, so that the strip-shaped material 23 is supplied to the upper surface of the body material 13 at predetermined intervals (intermittent conveying distance) in the body material conveying direction 13X.

[0038] The strip-shaped member attaching device 100 also includes a strip-shaped member weakening line processing machine 101. The strip-shaped member weakening line processing machine 101 forms weakened lines in the strip-shaped member 23 across its width direction 23b at predetermined intervals in the length direction 23a (strip-shaped member conveying direction 23X) of the strip-shaped member 23 by punching perforations using a perforation blade or by using ultrasonic waves using an ultrasonic device. The predetermined lengths of the strip-shaped member 23 cut along the weakened lines are arranged between the folding lines 13c and 13d of the body material 13 by the strip-shaped member supplying machine 102 described above.

[0039] The strip-shaped material supplying machine 102 transports the strip-shaped material 23 with a chuck while the body material 13 is being transported or is temporarily stopped. The strip-shaped material attaching device 100 also includes a strip-shaped material temporary fastening machine 103. After the strip-shaped material 23 is transported to a predetermined position on the body material 13 by the strip-shaped material supplying machine 102, it is temporarily fastened to the body material 13 by the strip-shaped material temporary fastening machine 103 while the body material 13 is stopped.

[0040] In this embodiment, the strip-shaped member supplying device 102 transports the strip-shaped member 23 by a chuck while transporting the body material 13. However, if transport of the strip-shaped member 23 starts at the same time as transport of the body material 13 starts, the leading edge of the strip-shaped member 23 may collide with another strip-shaped member 23 that is temporarily fastened to the body material 13. To prevent the strip-shaped member 23 from colliding with another strip-shaped member 23, the transport of the strip-shaped member 23 is started after the body material 13 has been transported a distance equivalent to the width dimension of the strip-shaped member 23. Then, when transport of the body material 13 is completed, transport of the strip-shaped member 23 should be completed.

[0041] In this embodiment, the chuck of the strip-shaped material supplying machine 102 grips the leading end of the strip-shaped material 23 and transports the strip-shaped material 23 to a predetermined position. Then, the strip-shaped material temporary fastening machine 103 temporarily fastens the leading end of the strip-shaped material 23 to the body material 13, and then the chuck pulls the strip-shaped material 23 back upstream, thereby cutting the strip-shaped material 23 at the weakened line. Other known techniques may be used to cut the strip-shaped material 23 at the weakened line.

[0042] The strip-shaped member temporary fastening device 103 temporarily fastens the strip-shaped member 23 to the body material 13 by known techniques such as heat sealing using a heat seal bar or ultrasonic waves using an ultrasonic device. In this embodiment, the strip-shaped member temporary fastening device 103 temporarily fastens the strip-shaped member 23 at its downstream end in the conveying direction 23X, but the strip-shaped member 23 may be temporarily fastened at both upstream and downstream ends in the conveying direction 23X depending on the physical positional relationship caused by the arrangement of peripheral devices.

[0043] The strip-shaped member attaching device 100 also includes a strip-shaped member sealing machine 104 located downstream of the strip-shaped member temporary fastening machine 103. The strip-shaped member sealing machine 104 seals the strip-shaped member 23 temporarily fastened by the strip-shaped member temporary fastening machine 103 to the body material 13 by heat sealing, for example, using a heat seal bar. The strip-shaped member sealing machine 104 seals the attachment base 22A of the female fastener 22 to the body material 13 with a sealing portion 104a (FIG. 2) extending in the width direction 13b of the body material 13, and seals the attachment base 21A of the male fastener 21 to the body material 13 with a sealing portion 104b (FIG. 2) extending in the width direction 13b of the body material 13. At this time, the cutting tape 3 integrated with the zipper tape 2 is also sealed to the body material 13. This sealing process is performed with each intermittent feed.

[0044] Thereafter, the sealed portion is cooled by a known cooling means (not shown), thereby ensuring a smooth, high-quality seal without wrinkles or the like.

[0045] The strip-shaped member attaching device 100 includes a first punch machine 105 and a second punch machine 106 arranged downstream of a strip-shaped member sealing machine 104 .

[0046] The first punching machine 105 punches the body material 13 and the belt-shaped member 23 to provide a first punched portion 41 (FIG. 1) in the bag 1. As shown in FIG. 2, the first punched portion 41 is formed in the body material 11, the cut tape 3, the mounting base 21A of the male fastener 21, and the mounting base 22A of the female fastener 22.

[0047] The second punching machine 106 punches the body material 13 and the belt-shaped member 23 to provide a second punched portion 43 (FIG. 1) in the bag 1. As shown in FIG. 2, the second punched portion 43 is formed by punching out the body material 11, the cut tape 3, the mounting base 21A of the male fastener 21, and the mounting base 22A of the female fastener 22.

[0048] The first and second punching machines 105 / 106 each have a punch blade with a cutting edge shaped like the punching section 41 / 43 that is moved by an actuator to punch the body material 13 and the strip-shaped member 23, forming the first and second punching sections 41, 43. The tab-shaped first punching section 41 and the straight-shaped second punching section 43 may have a reversed positional relationship, which is selected appropriately depending on the bag-making conditions. This punching process is performed each time intermittent feeding is performed.

[0049] 1 and 2, the bag 1 is provided with a pair of protective tapes 5. The protective tapes 5 are provided to prevent foreign matter from entering the inside of the bag 1 from the outside through the first punched section 41 and the second punched section 43. Therefore, each protective tape 5 is disposed between the body material 11 and the body material 12, and is bonded to the body material 13 so as to completely surround the first punched section 41 and the second punched section 43 and cover the entire width of the zipper tape 2. The method of bonding the protective tape 5 to the body material 13 is not limited to heat sealing, and any method that can seal the bag 1 can be used, such as ultrasonic bonding.

[0050] As shown in Figure 7, the strip-shaped member attachment device 100 includes a pair of original rolls 50 of protective tape 5 arranged downstream of a first punch machine 105 and a second punch machine 106. As shown in Figure 8, the pair of original rolls 50 are arranged above the body material 13 and are configured to be pulled out in the body material conveying direction 13X.

[0051] As shown in Figure 8, the belt-shaped member attachment device 100 is equipped with a protective tape feeder 113 below the original web 50. The protective tape feeder 113 is configured to feed the continuous protective tape 5 from the original web 50 in predetermined lengths. The protective tape feeder 113 is configured using known technology, and is configured, for example, to feed the protective tape 5 in predetermined lengths using nip rollers, or to transport a slider gripping the protective tape 5 by the predetermined length.

[0052] The belt-shaped member attachment device 100 is provided with a first tape guide 114 downstream of the protective tape feeder 113. The first protective tape guide 114 is composed of a nip guide roller. The first protective tape guide 114 is positioned to guide the protective tape 5 from the raw web 50 and feed it downstream.

[0053] The belt-shaped member attachment device 100 also includes a second protective tape guide 115 downstream of the first protective tape guide 114. The second protective tape guide 115 has a rectangular through-hole through which the protective tape 5 is guided. The second protective tape guide 115 is configured to be movable in the body material width direction 13b so that the protective tape 5 can be positioned at a predetermined position on the body material 13.

[0054] The belt-shaped member attachment device 100 also includes a protective tape weakening line processing machine 116, a protective tape temporary fastener 117, and a protective tape presser member 121 downstream of the second protective tape guide 115. The protective tape weakening line processing machine 116 is disposed a predetermined distance 116a upstream of the protective tape 5 from the protective tape temporary fastener 117. The predetermined distance 116a should be as small as possible in order to minimize unnecessary portions of the protective tape 5. Note that in this embodiment, the protective tape weakening line processing machine 116 and the protective tape temporary fastener 117 are formed as a unit, but this is not limiting and they may each be configured to be independently controllable.

[0055] The protective tape 5 guided to a predetermined position by the second protective tape guide 115 has a weakened line 5b such as a perforation created in the protective tape 5 by the protective tape weakened line processing machine 116 (its perforation blade 1160) while the body material 13 is temporarily stopped, and is heat-sealed (temporarily fixed) to the body material 13 on both sides 117a (Figure 10A) of the width direction 23b of the strip-shaped member 23 by the protective tape temporary fixing machine 117 (its heat seal bar).

[0056] More specifically, the protective tape temporary fastening device 117 and the protective tape weakening line processing device 116 are configured as an integral unit, so the perforation blade 1160 and the heat seal bar are moved up and down integrally by a common actuator. In order to perform perforation processing reliably, the perforation blade 1160 at the tip of the protective tape weakening line processing device 116 protrudes beyond the sealing surface (sealing surface of the heat seal bar) on the underside of the protective tape temporary fastening device 117.

[0057] As shown in Figure 9, a protective tape presser member 121 is provided between the protective tape temporary fasteners 117. When the protective tape 5 is heat-sealed (temporarily fastened) to the body material 13 by the protective tape temporary fastener 117 (Figure 9A), the protective tape presser member 121 presses the protective tape 5 against the body material 13 just before the perforation blade 1160 at the tip of the protective tape weakening line processing machine 116 penetrates the protective tape 5 (Figure 9B).

[0058] The protective tape pressing member 121 may be a cylindrical member that is longer than the width of the protective tape 5, and is configured so that it can be moved up and down by a separate actuator independently of the protective tape temporary fastener 117. For example, a unit may be configured in which the protective tape pressing member 121 is attached to the tip of a drive arm.

[0059] Thereafter, when the perforation blade 1160 of the protective tape weakening line processing machine 116 protrudes into the protective tape 5, the protective tape temporary fastener 117 (its heat seal bar) has not yet come into contact with the protective tape 5, but the protective tape presser member 121 is pressing the protective tape 5 against the body material 13, so the protective tape 5 is not pulled upstream (FIG. 9C).Then, the protective tape temporary fastener 117 comes into contact with the protective tape 5, and the protective tape 5 is fused to the body material 13 (FIG. 9D).

[0060] 11, the protective tape weakened line processing machine 116 is equipped with a perforation blade 1160 for forming perforations that become weakened lines 5b in the protective tape 5, and the perforation blade 1160 is equipped with cutting edges 1160a that are arranged in a straight line at predetermined intervals. Each cutting edge 1160a is configured to be inclined. The protective tape weakened line processing machine 116 also includes an actuator for linearly moving the perforation blade 1160 up and down.

[0061] 8 and 11, a protective tape receiving base 112 is disposed below the perforation blade 1160. The protective tape receiving base 112 has a plurality of holes 1120 in the form of through holes arranged at predetermined intervals. This allows each cutting edge 1160a of the perforation blade 1160 to fit into each hole 1120, thereby reliably forming perforations in the protective tape 5. However, the relevant components are designed so that the cutting edge 1160a does not protrude from the underside of the protective tape receiving base 112 even when the cutting edge 1160a is at the bottom dead center.

[0062] The multiple holes 1120 may be grooves (bottomed holes) instead of through holes. Also, instead of the multiple holes 1120, the protective tape receiving base 112 may have one groove (bottomed hole) or elongated hole (through hole) that is slightly wider than the thickness of the perforation blades 1160 and that can accommodate all of the blade edges 1160a.

[0063] With this configuration, the protective tape 5 is first pressed against the body material 13 by the protective tape pressing member 121, and then the perforation blade 1160 of the protective tape weakening line processing machine 116 penetrates into the protective tape 5 and heat seals (temporarily fastens) it to the body material 13, thereby enabling accurate heat sealing without misalignment.

[0064] As shown in Figure 8, the strip-shaped member attachment device 100 is equipped with a first body material guide 107 and a second body material guide 108 that guide the body material 13. The first body material guide 107 and the second body material guide 108 are composed of guide rollers. The second body material guide 108 is positioned below the protective tape receiving base 112 so as to guide the body material 13 to the underside of the protective tape receiving base 112. The first body material guide 107 and the second body material guide 108 guide the body material 13 so that it is transported to the opposite side of the perforation blade 1160 relative to the protective tape receiving base 112.

[0065] The belt-shaped member attachment device 100 also includes a heater base 119 arranged below the protective tape temporary fastener 117. The body material 13 and the protective tape 5 are arranged one on top of the other on the heater base 119. This allows the protective tape temporary fastener 117 to heat-seal the protective tape 5 to the body material 13 by moving the heat seal bar toward the heater base 119 with an actuator, while the protective tape weakening line processing machine 116 forms a weakening line only in the protective tape 5 with a perforation blade 1160.

[0066] The body material 13 is guided to the lower side of the protective tape receiving base 112 and then to the upper side of the heater base 119. Therefore, in this embodiment, the portion 119a where the body material 13 is introduced into the heater base 119 is configured in an arc shape so that the body material 13 does not wear at the contact portion with the heater base 119.

[0067] Also, as shown in Figure 8, while the protective tape weakening line processing machine 116 and the protective tape temporary fixing machine 117 are operating, a predetermined length of protective tape 5 is fed out by the protective tape feeding machine 113, but since the body material 13 is temporarily stopped, a deflection 5a of the protective tape 5 occurs between the first protective tape guide 114 and the second protective tape guide 115.

[0068] When the protective tape weakening line processing machine 116 and the protective tape temporary fastening machine 117 finish operating (FIG. 12A), transport of the body material 13 begins, and as the body material 13 is transported, the protective tape 5 that has been heat-sealed to the body material 13 by the protective tape temporary fastening machine 117 is transported integrally with the body material 13 (FIG. 12B). When the protective tape 5 and the body material 13 are transported integrally, the weakened line 5b formed in the protective tape 5 is positioned downstream of the protective tape temporary fastening machine 117, and the deflection 5a of the protective tape 5 is eliminated (FIG. 12B). When the protective tape 5 and the body material 13 are further transported integrally, a tensile force is generated in the protective tape 5, causing the protective tape 5 to tear at the weakened line 5b, and the leading end 5b of the protective tape 5 is positioned slightly downstream of the protective tape temporary fastening machine 117 (FIG. 12C).

[0069] Then, the transport of the body material 13 stops, the protective tape weakening line processing machine 116 and the protective tape temporary fastening machine 117 start operating, and a predetermined length of protective tape 5 is fed out (Figure 12A), and when the operation of the protective tape weakening line processing machine 116 and the protective tape temporary fastening machine 117 ends, the transport of the body material 13 starts (Figure 12B), and the protective tape 5 is torn at the weakening line 5b (Figure 12C), and this cycle is repeated.

[0070] 7, the belt-shaped member attaching device 100 also includes a protective tape sealing machine 118 disposed downstream of the protective tape temporary fastening machine 117. The protective tape 5 is heat-sealed to the body material 13 on both sides of the width direction 23b of the belt-shaped member 23 (FIG. 10A) by the protective tape temporary fastening machine 117 to form sealed portions 117a, and then the protective tape sealing machine 118 heat-seals the belt-shaped member 23 (zipper tape 2) together with the body material 13 so as to surround the peripheries of the first punched portion 41 and the second punched portion 43 on both sides of the belt-shaped member 23, thereby forming sealed portions 117b (FIGS. 10B and 3).

[0071] Heat sealing by the protective tape sealing machine 118 ensures that the protective tape 5 seals the punched portions 41, 43. However, because the sealing strength of the protective tape 5 between the cutting tape 3 and the mounting base 22A of the female fastener 22 is weak, opening with the cutting tape 3 is not prevented.

[0072] More specifically, the mounting base 22A and the protective tape 5 are heat-sealed in the thickness direction Z, but although the mounting base 22A and the cutting tape 3 are in close contact with each other, they are not completely heat-sealed. Therefore, when the first punched portion 41 (tab 4) is raised in the Z direction as shown in Figure 3 and the heat-sealed portion 117b is opened in the X direction, the cutting tape 3 does not prevent the package from being opened.

[0073] Therefore, even if the punching sections 41, 43 penetrate from the body material 13 (outer body material 11) to the mounting base 22A of the female fastener 22 due to the punching process of the first punching machine 105 and the second punching machine 106, the airtightness of the bag 1 is ensured by covering the penetrated punching sections 41, 43 with protective tape 5 and heat-sealing the periphery of the punching sections 41, 43.

[0074] As described above, a predetermined length of protective tape 5 is sent out in the body material conveying direction 13X from the raw roll 50 arranged on the upper side of the body material 13, and the predetermined length of protective tape 5 is conveyed in conjunction with the conveyance of the body material 13, and a weakened line 5b is processed into the protective tape 5.As a result, the tip 5b of the protective tape 5 in the next processing is conveyed to a predetermined position in conjunction with the conveyance of the body material 13, thereby preventing unnecessary material waste during bag production.

[0075] Second Embodiment The bag 1 with zipper tape of the second embodiment will be described with reference to Figures 13 and 14. Note that the same configuration as in the first embodiment will be omitted to avoid redundant description.

[0076] As shown in Figure 13, the cutting tape 3 and the mounting base 22A of the female fastener 22 are completely fused and heat-sealed, but due to differences in materials, they are in a state where they are easily peeled apart despite being in close contact.

[0077] As shown in Figure 14, when the user lifts the tab 4 in the Z direction and pulls it in the opening direction, the tab 4 is made up of the entire body 11 to the mounting base 22A of the female fastener 22 laminated together, but the mounting base 22A of the female fastener 22 tears off at the seal edge of the protective tape 5, which will be described later, and the package can then be opened smoothly.

[0078] The first punched portion 41 is the portion that becomes the handle (tab 4) when opening the bag. When the user opens the bag, they raise the tab 4, which is made up of the body material 11 and the belt-shaped member 23 integrated together, and pull the tab 4 in the opening direction. When the tab 4 reaches the inner edge of the rectangular seal portion of the protective tape 5 sealed by the protective tape seal portion 118, a phenomenon known as edge tearing occurs, and the mounting base 22A of the female fastener 22 is torn at the inner edge of the rectangular seal portion of the protective tape 5. From then on, the body material 11 and the cut tape 3 are torn apart while still overlapping, and when the torn portion reaches the second punched portion 43, which is a straight cut, it is separated from the bag 1.

[0079] The positional relationship between the male fastener 21 and the female fastener 22 may be reversed, and the positional relationship of the cutting tape 3 is not limited to being arranged continuously with the mounting base 21A of the male fastener 21, but may be arranged on the side of the mounting base 22A of the female fastener 22, as shown in Figure 13.

[0080] Although the embodiments have been described above, the configuration of the present invention is not limited to these embodiments. For example, the following modifications are possible.

[0081] The strip-shaped member temporary fastening machine 103, the strip-shaped member sealing machine 104, the protective tape temporary fastening machine 117 and the protective tape sealing machine 118 may seal the strip-shaped member 23 and the protective tape 5 to each other via adhesive or the like, for example, by applying adhesive or the like using an applicator, rather than by heat sealing using a heat seal bar.

[0082] The belt-shaped member attachment device 100 may be provided with a sensor downstream of the protective tape temporary fastener 117 that detects the position of the leading end 5b of the protective tape 5. This sensor enables the leading end 5b of the protective tape 5 to be positioned with high precision.

[0083] As a result, when the leading edge 5b of the protective tape 5 is upstream of a predetermined position (design position), a signal is sent to the protective seal feeder 113 to increase the feed amount of the next protective tape 5, thereby making it possible to position the leading edge 5b of the protective tape 5 in the next processing at the predetermined position. Also, when the leading edge 5b of the protective tape 5 is downstream of the predetermined position, the feed amount of the next protective tape 5 is reduced, making it possible to position the leading edge 5b of the protective tape 5 in the next processing at the predetermined position. For example, the protective tape feeder 113 includes a processor configured to control the amount of rotation of the nip roller or the amount of movement of the slider based on the signal from the sensor.

[0084] The strip-shaped member attachment device 100 of an embodiment of the present application comprises a strip-shaped member supplying machine 102 that supplies strip-shaped members 23 in a strip-shaped member conveying direction 23X perpendicular to the body material conveying direction 13X to a body material 13 that is conveyed intermittently in the body material conveying direction 13X; a strip-shaped member sealing machine 104 that seals the strip-shaped member 23 to the body material 13; punching machines 105 and 106 that form punched portions 41 and 43 in the body material 13 and the strip-shaped member 23; a protective tape feeding machine 113 that feeds a predetermined length of protective tape 5 to the body material 13 and the strip-shaped member 23 in the body material conveying direction 13X; a protective tape guide 115 that guides the protective tape 5 so that the punched portions 41 and 43 are covered by the protective tape 5; a protective tape weakening line processing machine 116 that forms weakening lines at predetermined intervals in the protective tape 5; and a protective tape sealing machine 118 that seals the protective tape 5 to the body material 13 and the strip-shaped member 23.

[0085] The belt-shaped member attachment device 100 seals a predetermined length of protective tape 5 to the body material 13 and the belt-shaped member 23, and forms a weakened line 5b in the protective tape 5. Then, by transporting the body material 13, the predetermined length of protective tape 5 is cut at the weakened line 5b and the predetermined length of protective tape 5 is sealed to the body material 13 and the belt-shaped member 23. Therefore, the protective tape 5 can be attached to the belt-shaped member 23 without any excess material loss.

[0086] Preferably, the protective tape weakened line processing machine 116 is equipped with a perforation blade 1160 that forms the weakened line 5b, and the strip-shaped member attachment device 100 is equipped with a protective tape receiving base 112 that receives the perforation blade 1160, and body material guides 107, 108 that guide the body material 13 so that the body material 13 is transported to the opposite side of the perforation blade 1160 relative to the protective tape receiving base 112.

[0087] This allows the protective tape weakened line processing machine 116 to form the weakened line 5b only in the protective tape 5.

[0088] Moreover, the protective tape receiving base 112 preferably has a plurality of holes 1120 into which the cutting edges 1160a of the perforation blade 1160 fit. The holes 1120 may be through holes or holes with a bottom.

[0089] This allows each cutting edge 1160a of the perforation blade 1160 to enter each hole 1120, thereby making it possible to reliably form perforations in the protective tape 5. [Explanation of symbols]

[0090] 1 zippered bag 11 First body material 12 Second body material 13 Body material 2 zipper tape 21 Male fastener 21A Male fastener mounting base 22 Female zipper 22A Female fastener mounting base 3 Cut Tape 4 Tabs 41 First punching section 43 Second punching section 100 Belt-shaped member attachment device 101 Belt-shaped material weakening line processing machine 102 Strip material supply machine 103 Belt-shaped material temporary fastening machine 104 Strip-shaped material sealing machine 105 First punch machine 106 Second punch machine 107 First Body Material Guide 108 Second body guide 112 Protective tape holder 1120 holes 116 Protective tape weakening line processing machine 1160 Perforation blade 1160a Perforation blade cutting edge 118 Protective tape sealing machine

Claims

1. a belt-shaped member supplying device that supplies a belt-shaped member to a body material that is intermittently conveyed in a body material conveying direction in a belt-shaped member conveying direction perpendicular to the body material conveying direction; a band-shaped member sealing machine for sealing the band-shaped member to the body material; a punching machine for forming punched portions in the body material and the belt-shaped member; a protective tape feeder that feeds a predetermined length of protective tape onto the body material and the belt-shaped member in the body material conveyance direction; a protective tape guide for guiding the protective tape so that the punched portion is covered with the protective tape; a protective tape weakened line processing machine including a perforation blade for forming weakened lines and an actuator for moving the perforation blade, the protective tape being formed with weakened lines at predetermined intervals using the perforation blade; a protective tape receiving base for receiving the perforation blade; A body material guide for guiding the body material so that the body material is transported to the opposite side of the perforation blade relative to the protective tape receiving base; a protective tape sealing machine that seals the protective tape to the body material and the belt-shaped member, Strip-shaped member attachment device.

2. The protective tape receiving base is A plurality of holes into which the cutting edges of the perforation blades are inserted, 2. The belt-shaped member mounting device according to claim 1.

3. a belt-shaped member supplying step of supplying a belt-shaped member to a body material being intermittently transported in a body material transport direction in a belt-shaped member transport direction perpendicular to the body material transport direction; a band-shaped member sealing step of sealing the band-shaped member to the body material; a punching step of forming punched portions in the body material and the belt-shaped member; a protective tape feeding step of feeding a predetermined length of protective tape onto the body material and the belt-shaped member in the body material conveyance direction; a protective tape guiding step of guiding the protective tape so that the punched portion is covered with the protective tape; a protective tape weakened line processing step of forming weakened lines at predetermined intervals in the protective tape using a perforation blade; A body material guiding process of guiding the body material so that the body material is transported to the opposite side of the perforation blade relative to a protective tape receiving base that receives the perforation blade; a protective tape sealing step of sealing the protective tape to the body material and the belt-shaped member, Method for attaching belt-shaped members.

Images