Tape wound body, method for conveying tape, method for manufacturing film equipped with tape, and method for manufacturing bag-like container equipped with tape

Abstract

Provided is a tape wound body around which a tape having a front surface and a back surface is wound from a first position in the longitudinal direction to a second position. The tape is wound, for each winding, from the first position located inside the tape wound body alternately on a first side and a second side in the winding axis direction up to the second position located outside the tape wound body with the tape front surface facing inward and the tape back surface facing outward. The portion of the tape that is contiguous to the first position can be drawn to the outside of the tape wound body through a gap formed between the first side and the second side of the tape wound body.

Description

Tape roll, tape transport method, method for manufacturing tape-attached film, and method for manufacturing tape-attached bag-shaped container

[0001] The present invention relates to a tape roll, a tape feeding method, a method for manufacturing a tape-attached film, and a method for manufacturing a tape-attached bag-shaped container.

[0002] Tapes such as zipper tape and tear tape attached to bag-shaped containers are stored by being wound around a core such as a bobbin, as described in Patent Document 1, for example. Alternatively, a method of storing tape in a storage container such as a packaging box while being wound and stacked is also known, as described in Patent Document 2. When a core is used, the tape can be stably unwound without twisting when unwound, but a dedicated unwinding machine is required to rotate the core in synchronization with the unwinding, and a process is required to stop the machine and switch to the next winding after one winding is used up. On the other hand, in the method of stacking tape while being wound into a storage container, no unwinding machine is required because it is only necessary to pull the tape from the storage container, and by previously connecting the end of the tape of the previous winding to the beginning of the tape of the next winding, tape supply can be continued without stopping the machine.

[0003] JP 2023-71618 A JP 2010-70218 A

[0004] However, in the method of winding and stacking the tape in the storage container, the tape may become creased or tangled when being pulled out, and there is still room for improvement in terms of stable pulling out.

[0005] Therefore, the present invention aims to provide a tape roll, a tape transport method, a method for manufacturing a tape-attached film, and a method for manufacturing a bag-shaped container with tape that prevent twisting of the tape and enable stable withdrawal when the tape is wound and stacked for storage.

[0006] [1] A tape winding in which a tape having a front surface and a back surface is wound from a first position to a second position in the longitudinal direction, the tape being wound from the first position inside the tape winding to the second position outside the tape winding alternately on a first side and a second side in the winding axis direction, with the front surface on the inside and the back surface on the outside, and the portion of the tape continuing from the first position can be pulled out to the outside of the tape winding through a gap formed between the first side and the second side of the tape winding. [2] The tape winding according to [1], having a removable core material on the inside. [3] The tape winding according to [2], having a packaging bag that packages the tape winding, the core material being inserted from the outside of the packaging bag into the inside of the tape winding. [4] The tape winding according to any one of [1] to [3], having a packaging box on the outside. [5] The tape winding according to any one of [1] to [4], further comprising a tube inserted into a gap formed between the first side and the second side of the tape winding, wherein the portion of the tape continuous to the first position is pulled out to the outside of the tape winding through the tube. [6] The tape winding according to [5], wherein the portion of the tape continuous to the second position is pulled from the outside to the inside of the tape winding at an end of the tape winding in the winding axis direction, and is pulled out to the outside of the tape winding through the tube together with the portion of the tape continuous to the first position. [7] The tape winding according to [5], wherein the tube has an open cross section. [8] The tape winding according to any one of [1] to [7], wherein the tape is a zipper tape. [9] The tape winding according to any one of [1] to [8], wherein the total number of turns of the tape wound around the first side and the total number of turns of the tape wound around the second side are equal between the first position and the second position.

[10] The tape wound body according to any one of [1] to [9], wherein the tape is wound alternately on the first side and the second side by n turns (n=1, 2, 3, ...) in at least a part from the first position to the second position.

[11] The tape is wound by n turns in the first section on the first position side. １The winding is alternately wound on the first side and the second side, and in the second section on the second position side of the first section, n ２ The wire is wound alternately on the first side and the second side, and in a third section located closer to the second position than the second section, n ３ The windings are alternately wound on the first side and the second side, and n １ >n ２ >n ３

[12] A tape feeding method using a first tape winding and a second tape winding having the configuration of the tape winding described in any one of [1] to

[11] , the method comprising the steps of connecting a portion of the first tape winding that is continuous with the second position to a portion of the second tape winding that is continuous with the first position, and pulling out and feeding the tape from the portion of the first tape winding that is continuous with the first position, and feeding the tape continuously to the portion of the second tape winding that is continuous with the second position.

[13] A method for manufacturing a tape-attached film that includes the steps of the tape feeding method described in

[12] , the method further comprising the step of joining the fed tape to a film.

[14] A method for manufacturing a tape-attached bag that includes the steps of the film manufacturing method described in

[13] , the method further comprising the step of processing the film to which the tape has been joined into a bag-shaped container main body.

[0007] According to the above configuration, the tape is wound alternately on the first and second sides in the winding axis direction in the section from the first position to the second position, which occupies the majority of the length of the tape, and when the tape is pulled out, it is pulled out from the gap formed between the first and second sides. In this case, at least in the section from the first position to the second position, the front and back of the tape are the same when wound and when pulled out, preventing the tape from twisting and enabling stable pulling out.

[0008] 8 is a diagram showing a tape winding according to one embodiment of the present invention; FIG. 9 is a diagram showing a method for manufacturing the tape winding shown in FIG. 1; FIG. 10 is a diagram showing a state in which the tape winding shown in FIG. 2 has been completed; FIG. 11 is a diagram showing an example of a packaged state of the tape winding according to one embodiment of the present invention; FIG. 12 is a diagram showing a first example of a tube to be inserted into a gap in the tape winding according to one embodiment of the present invention; FIG. 13 is a diagram showing a second example of a tube to be inserted into a gap in the tape winding according to one embodiment of the present invention; FIG. 14 is a diagram showing a first example of a method for manufacturing a tape-attached film and a pouch-like container with tape using the tape winding according to one embodiment of the present invention; FIG. 15 is a diagram showing a second example of a method for manufacturing a tape-attached film and a pouch-like container with tape using the tape winding according to one embodiment of the present invention; FIG. 16 is a diagram showing an example of a tape-attached film that can be provided in the example of FIG. 11; FIG. 17 is a diagram showing a first example of a container to which the tape constituting the tape winding according to one embodiment of the present invention is attached; FIG. 18 is a diagram showing a second example of a container to which the tape constituting the tape winding according to one embodiment of the present invention is attached; FIG. 19 is a diagram showing an example of ...

[0009] Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. In this specification and drawings, components having substantially the same functional configurations are designated by the same reference numerals, and redundant description will be omitted.

[0010] 1 is a diagram showing a tape winding according to one embodiment of the present invention. The tape winding 1 is formed by winding a tape 2 having a front surface and a back surface, with the tape 2 wound alternately on a first side D1 and a second side D2 in the winding axis direction. When the tape 2 is pulled out from the tape winding 1, the end of the tape 2 located inside the tape winding 1 is pulled out from a gap G formed between the first side D1 and the second side D2 of the tape winding 1, thereby preventing twisting of the tape 2 and enabling stable pulling out.

[0011] FIG. 2 is a diagram showing a method for manufacturing the tape wound body shown in FIG. 1 . As shown in FIG. 1 , the tape 2 is removed when the tape 2 is pulled out from the tape wound body 1, but a winding core C is used when manufacturing the tape wound body 1. The tape is wound around the winding core C starting from one end E1 of the tape 2 (first winding). The initial position where the tape 2 is wound around the winding core C is designated as the first position P1. The first position P1 will be located inside the completed tape wound body 1. From this point, the tape 2 is wound around the winding core C one wind at a time, alternately on the first side D1 and the second side D2 in the winding axis direction. Since the first winding is wound around the first side D1, the next second winding is wound around the second side D2, and the third winding is wound around the first side D1. FIG. 2 shows the fourth winding around the second side D2 and the first five windings around the first side D1, but subsequent windings are similarly continued up to the other end E2 of the tape 2. Although the winding core C is illustrated as being cylindrical, it is not limited to this. For example, a tubular winding core other than a cylindrical core may be used, or a winding core in which plate- or rod-shaped members are discretely arranged so as to form part of an arc or the sides or vertices of a polygon may be used. Specifically, the winding core may be formed using a plurality of plate-shaped members having an arc cross section that collectively forms part of a cylindrical surface, or a plurality of rod-shaped members arranged so as to form the vertices of a polygon. Furthermore, when manufacturing the tape wound body, the tape 2 may be wound around the winding core C while rotating it about its axis, or the tape 2 may be wound around the winding core C while it is fixed.

[0012] FIG. 3 is a diagram showing the state after the tape roll shown in FIG. 2 has been wound. The final position of the tape 2 wound around the winding core C is designated as the second position P2. The second position P2 is located outside the tape roll 1. Between the first position P1 and the second position P2 of the tape 2 described with reference to FIG. 2, the tape 2 is wound around the winding core C alternately on the first side D1 and the second side D2 in the winding axis direction, one turn at a time, with the front side facing inward and the back side facing outward. Here, the terms "front side" and "back side" of the tape 2 are terms that distinguish between the two sides of the tape 2, which has a generally flat cross-sectional shape, and have no other meaning. In other words, in this embodiment, when the tape 2 is wound to form the tape roll 1, one side of the tape 2 faces inward and the other side faces outward, and the two sides of the tape 2 do not switch positions between the first position P1 and the second position P2. However, the configuration of the tape 2 is not limited thereto. For example, the tape 2 may have a cross-sectional shape that is point-symmetric, with the front side and the back side having the same shape.

[0013] Note that the winding method and the relationship between the front and back surfaces of portions of the tape 2 other than those between the first position P1 and the second position P2, i.e., those between the first position P1 and the end E1 and those between the second position P2 and the end E2, are arbitrary. For example, the tape 2 may be wound two or more times consecutively on either the first side D1 or the second side D2 in the winding axis direction between the first position P1 and the end E1. Similarly, the tape 2 may be wound two or more times consecutively on either the first side D1 or the second side D2 in the winding axis direction between the second position P2 and the end E2. Because these portions correspond to the end portions of the tape 2 wound as the tape winding body 1, even if the tape 2 is twisted, it is easy to straighten the twist, for example, before pulling out the tape 2 from the end E1 or before connecting the end E2 to a tape of another tape winding body.

[0014] In the tape winding body 1 as described above, a gap G is formed between the first side D1 and the second side D2 in the winding axis direction, and a portion of the tape 2 including the end E1 that is continuous with the first position P1 (see FIG. 2 ) can be pulled out through the gap G. Here, the portion of the tape 2 including the end E1 only needs to be able to be pulled out through the gap G, and does not necessarily have to be already pulled out through the gap G when the tape winding body 1 is completed. For example, a string or the like may be attached as an extension member to the end E1 of the tape 2, and the string may be pulled out through the gap G. In this case, by pulling the string, the portion of the tape 2 that is continuous with the first position P1 can be pulled out through the gap G to the outside of the tape winding body 1. Furthermore, when a tube is inserted into the gap G, as in the example described below, the end E1 may be attached to the inside of the tube.

[0015] The tape roll 1 may be stored and transported with the core C used during production attached as a core material, as shown in FIG. 3 . The presence of the core material can prevent the tape roll 1 from unwinding, for example, during storage or transport. The core C is removable and is removed when the tape 2 is pulled out, as shown in FIG. 1 . For example, by using a foldable core C or by wrapping the surface of the core C on which the tape is wound with a film or the like during production and then removing the core C from within the film when unwinding, the removal of the core C can be made easier and the tape roll 1 can be prevented from unwinding when the core C is removed. Furthermore, by leaving the film after the core C is removed, the tape roll 1 can be prevented from unwinding, for example, during storage or transport.

[0016] 4 is a diagram showing an example of a packaging state of a tape roll according to one embodiment of the present invention. In the illustrated example, the tape roll 1 is covered on the outside with a packaging bag W1 and further housed in an outer packaging box W2. Only either the packaging bag W1 or the packaging box W2 may be used. Covering the outside of the tape roll 1 with the packaging bag W1 or the packaging box W2 can also prevent the tape roll 1 from becoming unwound, for example, during storage or transportation. To facilitate the operation of pulling out the tape 2, the ends E1 and E2 of the tape 2 may be attached to predetermined positions on the packaging bag W1 or the packaging box W2. The packaging bag W1 may be a bag with a gap between it and the tape roll 1, as in the illustrated example, or it may be a film-like bag that wraps the outer surface of the tape roll 1 with a small gap.

[0017] Furthermore, in addition to or instead of the packaging bag W1 and the packaging box W2, a core material W3 may be inserted inside the tape winding body 1. Unlike the winding core C in the example of FIG. 3 , the core material W3 is inserted after the tape winding body 1 has been wound. The core material W3 also prevents the tape winding body 1 from becoming unwound. The core material W3 can be made smaller in diameter than the winding core C, making it easy to remove when pulling out the tape 2. Furthermore, when the outside of the tape winding body 1 is covered with the packaging bag W1, the core material W3 may be inserted inside the tape winding body 1 from the outside of the packaging bag W1, unlike the example shown in the drawings. Alternatively, a portion of the inner surface of the packaging box W2 may be protruded and inserted inside the tape winding body 1 to serve as a core material.

[0018] 5 is a diagram showing a first example of a tube inserted into a gap in a tape winding in one embodiment of the present invention. As described above, when the tape 2 is pulled out from the tape winding 1, the end of the tape 2 inside the tape winding 1 is pulled out through the gap G formed between the first side D1 and the second side D2 of the tape winding 1. A tube S1 may be inserted into the gap G to prevent this gap G from being blocked during storage or transportation of the tape winding 1 or while the tape 2 is being pulled out. The end E1 of the tape 2 (the portion continuous with the first position P1 shown in FIG. 2 ) is pulled out to the outside of the tape winding 1 through the tube S1. The tube S1 may be inserted after winding the tape winding 1, for example, in the same manner as the core W3 described above. Alternatively, the tube S1 may be inserted before pulling out the tape 2 from the tape winding 1, for example, after removing the winding core C or the core W3 used as the core.

[0019] In the tape winding body 1, by connecting end E2 to the tape of another tape winding body, specifically, for example, a portion corresponding to end E1 of the same tape as the tape winding body 1, it is possible to continuously supply tape across multiple tape winding bodies. However, when a tube S1 is present as in the example of FIG. 5 , if only the portion of tape 2 on the end E1 side is threaded through the tube S1, the tape 2 will ultimately remain threaded through the tube S1. Therefore, the portion of tape 2 on the opposite end E2 side (the portion continuous with the second position P2) is pulled from the outside to the inside of the tape winding body 1 at the end of the tape winding body 1 in the winding axis direction (the end on the first side D1 in the illustrated example), and then pulled out together with the portion on the end E1 side through the tube S1 to the outside of the tape winding body 1. In this way, when tape 2 is pulled from end E1 to end E2, the tube S1 detaches from tape 2, and does not remain even when tape is continuously supplied as described above.

[0020] FIG. 6 is a diagram showing a second example of a tube inserted into a gap in a tape roll in one embodiment of the present invention. In the illustrated example, a tube S2 having an open cross section, specifically a C-shaped cross section, is inserted into the gap G formed between the first side D1 and the second side D2 of the tape roll 1. The method of inserting the tube S2 is similar to that of the tube S1 in the example of FIG. 5. However, in the case of the tube S2 having an open cross section as in the example of FIG. 6, the inserted tape 2 can be released from the open portion of the cross section, so it is not necessarily necessary to have both ends E1 and E2 of the tape drawn through the tube S1 to the outside of the tape roll 1 as in the example of FIG. 5. Even when a tube S2 having an open cross section is used, for example, if the open portion of the cross section is small, both ends E1 and E2 of the tape may be drawn through the tube S2 to the outside of the tape roll 1. Note that while the tube S1 shown in FIG. 5 and the tube S2 shown in FIG. 6 are illustrated with circular or arc-shaped cross sections, the present invention is not limited to these examples. The tube may have, for example, a polygonal or elliptical cross section, or a truncated polygonal or elliptical cross section.

[0021] According to the tape roll 1 of the embodiment of the present invention as described above, in the section from the first position P1 to the second position P2, which occupies most of the length of the tape 2, the tape 2 is wound alternately on the first side D1 and the second side D2 in the winding axis direction, and when the tape 2 is pulled out, it is pulled out from the gap G formed between the first side D1 and the second side D2. In this case, at least in the section from the first position P1 to the second position P2, the front and back of the tape 2 are the same when wound and when pulled out, preventing twisting of the tape 2 and enabling stable pulling out.

[0022] As described above, the winding core C is used when manufacturing the tape winding body 1, but the winding core C is removed before the tape 2 is pulled out, so that the advantages of a method of stacking the tape while winding it inside a storage container can be obtained for the tape winding body 1. More specifically, because the tape 2 is pulled out from the tape winding body 1 stored in the packaging bag W1 or packaging box W2 without a winding core, or from the tape winding body 1 that has been removed from the packaging bag W1 or packaging box W2 and is standing on its own, no unwinding machine is required, and a tape feeding method can be used in which the tape end of the previous winding body is connected to the tape start of the next winding body in advance, thereby allowing the tape to continue to be supplied without stopping the machine. In this tape transport method, for example, for a first tape winding body and a second tape winding body, both of which have the configuration of the tape winding body 1 described above, an end E2 continuous with the second position P2 of the first tape winding body is connected to an end E1 continuous with the first position P1 of the second tape winding body, and the tape 2 is pulled out and transported from the end E1 continuous with the first position P1 of the first tape winding body, and the tape 2 is transported continuously to the end E2 continuous with the second position P2 of the second tape winding body.

[0023] FIG. 7 illustrates a first example of a method for manufacturing a tape-attached film and a tape-attached bag-shaped container using a tape roll according to an embodiment of the present invention. In the three-side bag making machine 300 shown in FIG. 7 , the film supply unit 310 unwinds the film 110 wound around the film roll 311 and cuts it widthwise using a cutting blade (not shown) to form the first surface 110A and the second surface 110B. The tape supply unit 320 pulls out the tape 2 wound around the tape roll 1 and supplies it between the first surface 110A and the second surface 110B using a conveying roll 322 or the like. The seal bar 330 clamps the tape 2 from the outside of the first surface 110A and the second surface 110B and applies heat to bond the tape 2 to the first surface 110A and the second surface 110B, respectively. The seal bars 341 and 342 form bottom seals and side seals between the first surface 110A and the second surface 110B. The cutting blades 351 and 352 cut the joined first surface 110A and second surface 110B in the longitudinal direction and width direction, respectively, to cut out the bag-shaped container 100.

[0024] In the three-sided bag making machine 300 as described above, for example, a tape feeding method is implemented in which tape from the plurality of tape rolls as described above is continuously drawn out and fed in the tape supply unit 320. The fed tape 2 is joined to the first surface 110A and the second surface 110B of the film by the seal bar 330 to produce a tape-attached film. Furthermore, the first surface 110A and the second surface 110B of the film to which the tape 2 has been joined are processed by the seal bars 341, 342 and the cutting blades 351, 352 into a bag-shaped container body to produce a tape-attached bag-shaped container.

[0025] FIG. 8 is a diagram showing a second example of a method for manufacturing a tape-attached film and a tape-attached bag-shaped container using a tape roll according to an embodiment of the present invention. In the bag-making apparatus 600 shown in FIG. 8 , the tape splicing means 610 includes a feeder 611 and seal bars 612A and 612B, and splices a predetermined length of tape 2 drawn from the tape roll 1 along the width direction of the film 110, which is drawn from a roll (not shown) and transported longitudinally. The tab forming means 620 includes a cutter 621 and a receiving table 622, and forms a tab for opening by a slit 151 penetrating the film 110 and the tape 2. The back seal forming means 640 includes a core 641, a transport belt 642, and a sealing device 643, and forms the general shape of the container body by winding both widthwise sides of the film 110 into a cylindrical shape and forming a back seal portion. The top / bottom seal forming means 650 includes seal bars 651A, 651B, a cutter 652 and a receiving table 653, and forms a top seal portion and a bottom seal portion in the film 110 folded over on both sides in the width direction, and cuts the film 110 in the width direction to form a bag-shaped container.

[0026] When filling of contents is also performed using bag making apparatus 600, filling device 601 is inserted from above into core 641, which has been made hollow by back seal forming means 640. Filling device 601 discharges the contents in synchronization with sealing bars 651A, 651B sandwiching film 110 in top / bottom seal forming means 650, filling the space formed above the bottom seal of the bag-shaped container with the contents. Thereafter, when sealing bars 651A, 651B separate, the contents are conveyed downward over sealing bars 651A, 651B together with film 110, and then a top seal is formed, sealing the bag-shaped container filled with the contents.

[0027] In the bag making apparatus 600 as described above, for example, a tape feeding method is implemented in which the tape from the plurality of tape rolls as described above is continuously drawn out and fed in a section that supplies tape 2 to feeder 611 of tape splicing means 610. The fed tape 2 is spliced ​​to film 110 by seal bars 612A, 612B to produce a tape-attached film. Furthermore, the film 110 to which tape 2 has been spliced ​​is processed into a bag-shaped container body by back seal forming means 640 and top / bottom seal forming means 650 to produce a tape-attached bag-shaped container.

[0028] FIG. 9 is a diagram showing an example of a tape-attached film that can be provided in the example of FIG. 8 . In the example of the bag-making apparatus 600 described above, the film 110 can be wound up after the steps up to the tab forming means 620 are completed, and provided as a tape-attached film 210, which is an intermediate product. The tape-attached film 210 includes the film 110 and at least two or more tapes 2 attached to one side of the film 110, spaced apart from each other along the longitudinal direction of the rolled film 110. The long member may have tabs formed by slits 151. In order to form the container body by folding as described above, in the tape-attached film 210, the width L1 of the film 110 is greater than twice the length L2 of the tapes 2.

[0029] FIG. 10 shows a first example of a container to which a tape constituting a tape roll according to an embodiment of the present invention is attached. In the illustrated example, the tape 2 is a zipper tape and includes a pair of bases 21A, 21B and a pair of engagement portions 22A, 22B protruding from each base. The surfaces of the bases 21A, 21B opposite the engagement portions 22A, 22B constitute the front and back surfaces of the tape 2. As already mentioned, the terms "front surface" and "back surface" merely distinguish between the two surfaces of the tape 2. Therefore, either the surface of the base 21A on the side of the male engagement portion 22A or the surface of the base 21B on the side of the female engagement portion 22B may be referred to as the "front surface." In this case, the tape 2 is attached to the bag-like container 100 by bonding the front and back surfaces to the first surface 110A and second surface 110B, respectively, of the film 110 constituting the container body. Note that the zipper tape may include two or more pairs of engagement portions. Furthermore, the engaging portions are not limited to the male-female type engaging portions 22A and 22B in the illustrated example, but various known shapes of engaging portions of zipper tapes, such as hook shapes, can be adopted.

[0030] FIG. 11 shows a second example of a container to which a tape constituting a tape roll according to an embodiment of the present invention is attached. In the illustrated example, the tape 2 is a tear tape, and the base 23 includes two portions 23A and 23B sandwiching a slit. A tear strip 24 is disposed in a recess formed in the portion of the base 23 containing the slit. In this case, the tape 2 is attached to the bag-like container 100 by bonding one surface (front or back) of the tape 2, specifically the surface of the base 23 opposite the slit, and the tear strip 24 to the first surface 110A of the film 110 constituting the container body. When the tear strip 24 tears the first surface 110A, an opening can be formed in the bag-like container 100 through the slit between the two portions 23A and 23B of the base 23. In this way, the tape 2 may be bonded to the film of the container body only on either the front or back surface. Alternatively, the tape 2 may include multiple portions with different resin compositions, such as the base and the tear strip.

[0031] 10 and 11 are illustrative examples, and the present invention is not limited to these examples. The configuration of the tape roll according to the embodiment of the present invention can be applied to various types of tape that are stored or transported in a rolled state and are pulled out and joined to the film of a container body when in use. For example, the configuration of the tape roll according to the embodiment of the present invention can be applied to a tape that combines a zipper tape as shown in Fig. 10 with a tear strip as shown in Fig. 11, or a tape that has a pair of bases each formed with a thin portion to guide tearing when the bag-shaped container is opened.

[0032] In an embodiment of the present invention, the period in which the tape 2 is alternately wound between the first side D1 and the second side D2 in the winding axis direction does not necessarily have to be one turn at a time. The tape 2 may be alternately wound between the first side D1 and the second side D2 in n turns (n ​​= 1, 2, 3, ...). Figure 12 shows an example in which the tape 2 is alternately wound between the first side D1 and the second side D2 in one turn at a time. In this case, while the tape 2 is wound once on the first side D1, the winding position in the winding axis direction is reversed on the first side D1 and returned to the center, and the next turn is wound on the second side D2. While the tape 2 is wound once on the second side D2, the winding position is reversed on the second side D2 and returned to the center, and the next turn is again wound on the first side.

[0033] Similarly, Figure 13 shows an example in which the tape 2 is wound alternately between the first side D1 and the second side D2 by two turns each. In this case, while the tape 2 is wound twice on the first side D1, the winding position in the winding axis direction is reversed on the first side D1 and returned to the center, and the next two turns are wound on the second side D2. While the tape 2 is wound twice on the second side D2, the winding position is reversed on the second side D2 and returned to the center, and the next two turns are wound on the first side again. Figure 14 shows an example in which the tape 2 is wound alternately between the first side D1 and the second side D2 by three turns each. In this case, while the tape 2 is wound three times on the first side D1, the winding position in the winding axis direction is reversed on the first side D1 and returned to the center, and the next three turns are wound on the second side D2. While the tape 2 is wound three times on the second side D2, the winding position is reversed on the second side D2 and returned to the center, and the next three turns are wound on the first side again.

[0034] 12 to 14 may be used together in the same tape roll 1. Specifically, for example, the tape 2 is wound from the first position P1, and in the first section, the tape 2 is wound n １ The tape 2 is wound alternately on the first side D1 and the second side D2 in the second section. ２ The tape 2 is wound alternately on the first side D1 and the second side D2 in the third section. ３ The winding is alternately wound on the first side D1 and the second side D2, and n １ >n ２ >n ３ In this case, the number of turns of the tape 2 wound alternately between the first side D1 and the second side D2 is greater on the inside of the tape winding body 1 near the winding core C and is less on the outside of the tape winding body 1. For example, n １ = 3 (example of FIG. 14), n ２ = 2 (example of FIG. 13), n ３ = 1 (example in FIG. 12 ), but is not limited to this example. When winding the tape 2 around a winding core C or a tape winding body 1 with a relatively small diameter, increasing the number of turns n of alternate winding and relatively lengthening the period in which the winding position moves in the winding axis direction can prevent the amount of traverse relative to the winding length of the wound tape 2 from becoming too large and placing a strain on the tape 2. On the other hand, when winding the tape 2 around a tape winding body 1 with a larger diameter, even if the number of turns n of alternate winding and relatively shortening the period in which the winding position moves, the amount of traverse relative to the winding length will not become too large because the winding length of the wound tape 2 is longer.

[0035] Note that, of the first, second, and third sections of the tape 2 described above, the first section is the section closer to the first position P1, the second section is the section closer to the second position P2 than the first section, and the third section is the section closer to the second position P2 than the second section. In other words, the first, second, and third sections are located in this order from the first position P1 to the second position P2 of the tape 2. However, these sections do not necessarily have to be consecutive. In other words, there may be sections between the first position P1 and the first section, between the first and second sections, between the second and third sections, and between the third section and the second position P2 that are not included in any of the sections.

[0036] As described above, whether the number of turns n around which the tape 2 is alternately wound varies depending on the position in the tape roll 1 or the tape 2 is alternately wound with the same number of turns n throughout, as long as the total number of turns of the tape 2 around the first side D1 and the total number of turns of the tape 2 around the second side D2 are equal between the first position P1 and the second position P2, no twisting will occur when the tape 2 is pulled out from the tape roll 1. However, because there may be a difference of about one turn at the beginning or end of the tape roll 1 immediately adjacent to the first position P1 or the second position P2, the total number of turns on the first side D1 and the second side D2 in the tape roll 1 is not always strictly equal.

[0037] 15 and 16 are graphs showing examples of winding control in an embodiment of the present invention. The horizontal axis of the graph represents the rotation angle (0° to 360°) of one turn of the tape 2 wound around the winding core C or the tape winding body 1, and the vertical axis represents the traverse amount. As shown in the figures, by shifting the winding rotation period and the traverse reciprocation period, the intersections of the tape 2 on the tape winding body 1 are dispersed, preventing, for example, overlapping of intersections at the same position and resulting in localized thickness of the tape winding body 1. Furthermore, by combining plus control, in which the winding rotation period precedes the traverse reciprocation period as shown in FIG. 15 , with minus control, in which the winding rotation period lags the traverse reciprocation period as shown in FIG. 16 , the total number of turns of the tape 2 wound around the first side D1 and the total number of turns of the tape 2 wound around the second side D2 of the tape winding body 1 can be made equal. In the illustrated example, the traverse reciprocating motion is a sinusoidal curve, but the form of the traverse reciprocating motion is not particularly limited, and may be other forms such as reciprocating motion at a constant speed in a straight line.

[0038] 1...tape roll, 2...tape, 21A, 21B, 23...base, 22A, 22B...engaging portion, 24...tear strip, C...winding core, D1...first side, D2...second side, E1, E2...end, G...gap, P1...first position, P2...second position, S1, S2...tube, W1...packaging bag, W2...packaging box, W3...core, 100...bag-shaped container, 110...film, 110A...first surface, 110B...second surface, 151...notch, 210...film with tape, 300...three-side bag making machine, 600...bag making device, 601...filling device.

Claims

1. A tape wound body in which a tape having a front surface and a back surface is wound from a first position to a second position in the longitudinal direction, wherein the tape is wound from the first position inside the tape wound body to the second position outside the tape wound body alternately on a first side and a second side in the winding axis direction, with the front surface facing inward and the back surface facing outward, and a portion of the tape continuous with the first position is pullable out of the tape wound body from a gap formed between the first side and the second side of the tape wound body.

2. The tape wound body according to claim 1, having a core material that can be withdrawn from the inside.

3. The tape wound body according to claim 2, having a packaging bag for packaging the tape wound body, wherein the core material is inserted into the tape wound body from the outside of the packaging bag.

4. The tape wound body according to any one of claims 1 to 3, having a packaging box on the outside.

5. The tape wound body according to any one of claims 1 to 4, further comprising a tubular body inserted into a gap formed between the first side and the second side of the tape wound body, and a portion of the tape continuous with the first position is pulled out of the tape wound body through the tubular body.

6. The tape wound body according to claim 5, wherein a portion of the tape continuous with the second position is drawn from the outside to the inside at an end of the tape wound body in the winding axis direction, and together with the portion of the tape continuous with the first position, is pulled out of the tape wound body through the tubular body.

7. The tape wound body according to claim 5, wherein the tubular body has an open cross-section.

8. The tape wound body according to any one of claims 1 to 7, wherein the tape is a zipper tape.

9. The tape wound body according to any one of claims 1 to 8, wherein the total number of turns of the tape wound on the first side and the total number of turns of the tape wound on the second side are equal between the first position and the second position.

10. The tape wound body according to any one of claims 1 to 9, wherein at least a part from the first position to the second position, the tape is wound alternately on the first side and the second side in n turns (n = 1, 2, 3,...).

11. The tape is wound alternately on the first side and the second side by n turns in the first section on the first position side. １ In the second section on the second position side than the first section, it is wound alternately on the first side and the second side by n turns. ２ In the third section on the second position side than the second section, it is wound alternately on the first side and the second side by n turns. ３ In each section, it is wound alternately on the first side and the second side by n turns. １ n ２ > n ３ > n The tape winding body according to claim 10, wherein this is satisfied.

12. A tape conveyance method using a first tape winding body and a second tape winding body having the configuration of the tape winding body according to any one of claims 1 to 11, comprising: a step of connecting a portion continuous with the second position of the first tape winding body and a portion continuous with the first position of the second tape winding body; and a step of pulling out and conveying the tape from a portion continuous with the first position of the first tape winding body and continuously conveying the tape to a portion continuous with the second position of the second tape winding body.

13. A method for manufacturing a film with a tape, comprising the steps of the tape conveyance method according to claim 12, further comprising a step of joining the conveyed tape to the film.

14. A method for manufacturing a bag with a tape, comprising the steps of the film manufacturing method according to claim 13, further comprising a step of processing the film to which the tape is joined into a bag-shaped container body.

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