TAPE-LIKE OPENING/CLOSING TOOL FOR ARTICLE OPENING AND METHOD FOR MANUFACTURING SAME, AND ARTICLE USING OPENING/CLOSING TOOL

Abstract

 It is an object of the present invention to reduce generation of rust on magnets and breakage of tape due to intrusion of moisture, by heating and shrinking a heat-shrinkable resin tube used in a tape-shaped opening/closing tool including the magnets. The present invention relates to a tape-shaped opening/closing tool for an opening portion of an article. The tape-shaped opening/closing tool includes: a heat-shrinkable resin tube; a plurality of magnets arranged in the tube at regular intervals, wherein the magnets are enclosed in the tube in such a manner as to be positionally fixed by resin after the resin has been shrunk using heat. A method of the present invention is a method for manufacturing a tape-shaped opening/closing tool for an opening portion of an article, the method includes the steps of preparing a heat-shrinkable resin tube (12); arranging a plurality of magnets (13) in the tube at regular intervals; and heating and heat-shrinking the tube to fix the magnets.

Description

Technical Field

[0001] The present invention relates to a tape-shaped opening/closing tool for an opening portion of an article, a method for manufacturing the same, and an article using the opening/closing tool. The "article" is, for example, a garment, a bag, shoes, an openable/doseable container, or the like.

Background Art

[0002] A wide variety of tape-shaped opening/closing tools for an opening portion of an article are known. A tape-shaped opening/closing tool in which a plurality of snap buttons are set on a tape at regular intervals, a tape-shaped opening/closing tool in which a coupling element and a sliding fastener pull tab are combined, and a tape-shaped surface fastener are known, for example.

[0003] The present invention disclosed below is a tape-shaped opening/closing tool in which a plurality of small permanent magnet pieces are arranged. Japanese Utility Model Application Laid-Open Publication No. 59-70508, Japanese Utility Model Application Laid-Open Publication No. 4-74010, Japanese Patent Application Laid-Open Publication No. 11-269713, Japanese Unexamined Patent Application Publication No. 2001-137015, Japanese Unexamined Patent Application Publication (Translation of PCT Application) No. 2013-538435, and the like are cited as the prior art.

[0004] The enclosing apparatus according to Japanese Unexamined Patent Application Publication (Translation of PCT Application) No. 2013-538435, which appears to be as being the closest to the present invention, includes a first flexible strip 10 (the reference numerals in this and the following paragraphs refer to those in this prior art document) and a second flexible strip 20. The first flexible strip 10 is provided with a cavity 16 into which magnet pieces 18 can be inserted, and the second flexible strip 20 is provided with a cavity 26 into which magnet pieces 28 can be inserted. The magnet pieces 18 are inserted into the cavity 16 using a first film 19, and the magnet pieces 28 are inserted into the cavity 16 using a second film 29. The first strip 10 and the second strip 20 come in contact with each other such that the magnet pieces 18 and 28 are magnetically attracted to each other.

[0005] The first film 19 and the first flexible strip 10, and the second film 29 and the second strip 20 are "mechanically connected" ([0187]), or are connected by means "selected from the group consisting of radio frequency welding, ultrasonic welding, thermal welding, stitching, sealing tape, gluing, or a combination thereof' ([0188]).

Prior Art Documents

Patent Documents

[0006] 

Patent Document 1: Japanese Utility Model Application Laid-Open Publication No. 59-70508

Patent Document 2: Japanese Utility Model Application Laid-Open Publication No. 4-74010

Patent Document 3: Japanese Patent Application Laid-Open Publication No. 11-269713

Patent Document 4: Japanese Unexamined Patent Application Publication No. 2001-137015

Patent Document 5: Japanese Unexamined Patent Application Publication (Translation of PCT Application) No. 2013-538435

Disclosure of Invention

Problem to be Solved by the Invention

[0007] According to Japanese Unexamined Patent Application Publication (Translation of PCT Application) No. 2013-538435 (Patent Document 5), in order to incorporate the magnet pieces, the strip bodies and the film covering the surfaces of the magnet pieces are mechanically or chemically bonded to each other. Then, the magnet pieces are positionally fixed in the cavity through the bonding. Although not described, the same configuration is also disclosed in Patent Documents 1 to 4.

[0008] In the above-described method of the prior art, when the bonding between the strip body and the film covering the surfaces of the magnet pieces is not sufficient, there is a possibility that moisture will enter from the gap therebetween and cause the magnet pieces to rust, or a joint portion will break, and in an extreme case, the magnet pieces will fall out from the strip body. It is an object of the present invention to solve these problems by heat-shrinking resin to firmly fix the positions of magnet pieces.

Means for Solving Problem

[0009] In order to achieve the above object, the present invention provides a tape-shaped opening/closing tool for an opening portion of an article, including: a heat-shrinkable resin tube: and a plurality of magnets arranged in the tube at regular intervals, wherein the magnets are enclosed in such a manner as to be positionally fixed by the resin after the resin has been shrunk using heat.

[0010] In another aspect, the tube encloses not only the plurality of magnets but also a pierce of tape to which the magnets are attached. The tape is a member required in the method of one embodiment for manufacturing the tape-shaped opening/closing tool.

[0011] Preferably, the heat-shrinkable resin tube is a complete tube having no cut in a longitudinal direction thereof.

[0012] In another embodiment, a tube having one welded-portion line in a longitudinal direction thereof is used as the heat-shrinkable resin tube.

[0013] In still another embodiment, a tube having two welded-portion lines in a longitudinal direction thereof is used as the heat-shrinkable resin tube.

[0014] The tube made of the heat-shrinkable resin according to each of the embodiments has welded portions also at two ends in a longitudinal direction thereof.

[0015] The present invention also discloses a method for manufacturing a tape-shaped opening/closing tool for an opening portion of an article. A first method includes: a step of preparing a heat-shrinkable resin tube; a step of arranging a plurality of magnets in the tube at regular intervals; and a step of fixing the magnets in the tube by heat-shrinking the tube.

[0016] A second method includes: a step of preparing one heat-shrinkable resin plate; a step of arranging a plurality of magnets on the resin plate at regular intervals; a step of folding the resin plate along a longitudinal direction; a step of welding side edges in the longitudinal direction of the resin plate to each other; and a step of fixing the magnets by heat-shrinking the resin plate. The order of the steps may be reversed as long as no contradiction arises.

[0017] A third method includes: a step of preparing two heat-shrinkable resin plates; a step of arranging a plurality of magnets between the two resin plates at regular intervals; a step of welding left and right end portions in a longitudinal direction of the two resin plates to each other; and a step of fixing the magnets by heat-shrinking the resin plates. The order of the steps may be reversed as long as no contradiction arises.

[0018] Preferably, each of the above-described methods further includes a step of heating two ends in the longitudinal direction to form welded portions. It is economical to carry out this step simultaneously with the welding step in each of the above-mentioned methods if possible.

[0019] In the first method, "a step of arranging a plurality of magnets in the tube at regular intervals" preferably includes preparing a tape to which the magnets are attached and enclosing the tape in the tube.

[0020] Preferably, "a method of preparing a tape to which the magnets are attached and enclosing the tape in the tube" includes the following steps.

(a) Placing a piece of first tape on a plurality of fixed magnets that are set at regular intervals on a jig.

(b) Placing a plurality of magnets on the first tape and attaching the plurality of magnets to the fixed magnets via the first tape.

(c) Imparting, to the top surfaces of the magnets on the first tape, adhesiveness to a tape.

(d) Placing a piece of second tape on the magnets placed on the first tape and adhering the second tape to the top surfaces of the magnets having adhesiveness.

(e) Separating the first tape and the second tape from the fixed magnets.

(f) Separating the first tape and the second tape from each other and taking only the second tape to which the top surfaces of the magnets are attached.

(g) Attaching a weight to the second tape to which the top surfaces of the magnets are attached.

(h) Inserting the second tape to which the top surfaces of the magnets are attached into a tube following the weight.

[0021] As the resin for the tube to be used, any resin may be used as long as it can be heat-shrunk and heat-welded. As such resins, well-known resins such as polyolefin-based resins, silicon-based resins, and fluororesin-based resins can be used.

[0022] As the magnets to be used, a well-known permanent magnet can be used. As the permanent magnet, for example, a well-known permanent magnet such as an alnico magnet, a ferrite magnet, or a neodymium magnet can be used.

Effects of the Invention

[0023] The tape-shaped opening/closing tool for an opening portion of an article of the present invention has a tube made of a heat-shrinkable resin and a plurality of magnets arranged in the tube at regular intervals. Because the magnets are enclosed in the tube composed of the heat-shrunk resin, it is easy to position and fix the magnets at regular intervals, and it is possible to reduce the risk of the magnets rusting or damage to the magnets occurring in the tape due to the intrusion of moisture.

[0024] In particular, when a tube having no cut is used as the resin, the tape-shaped opening/closing tool has no welded portion in an intermediate portion except for the two end portions, and thus is aesthetic and has a smooth texture, and the tape-shaped opening/closing tool can be easily attached to a garment or an opening portion of a bag.

Brief Description of Drawings

[0025] 

FIG. 1 is a perspective view of a bag in which a tape-shaped opening/closing tool according to a first embodiment of the present invention is used in an opening/closing portion.

FIG. 2(a) is a side view, FIG. 2(b) is a plan view, FIG. 2(c) is a lateral cross-sectional view of FIG. 2(b), and FIG. 2(d) is a lateral cross-sectional view of FIG. 2(a) of the tape-shaped opening/closing tool according to the first embodiment of the present invention.

FIG. 3 shows perspective views respectively showing steps (a) and (b) of a method for manufacturing the tape-shaped opening/closing tool according to the first embodiment of the present invention.

FIG. 4 shows perspective views respectively showing states in which magnets are attracted to each other in a method for manufacturing a tape-shaped opening/closing tool according to a first embodiment of the present invention.

FIG. 5 shows perspective views respectively showing steps (a), (b), and (c) of a method for manufacturing a tape-shaped opening/closing tool according to a second embodiment of the present invention.

FIG. 6 shows perspective views respectively showing steps (a) and (b) of a method for manufacturing a tape-shaped opening/closing tool according to a fourth embodiment of the present invention.

FIG. 7 shows plan views respectively showing arrangement examples (a) and (b) of magnetic poles in the tape-shaped opening/closing tool according to the first embodiment of the present invention.

FIG. 8 shows plan views respectively showing arrangement examples (a) and (b) of magnetic poles in the tape-shaped opening/closing tool according to the second embodiment of the present invention.

FIG. 9-1 shows side views respectively showing manufacturing steps (a) to (d) of the tape-shaped opening/closing tool according to the first embodiment.

FIG. 9-2 shows side views respectively showing manufacturing steps (e) and (f) of the tape-shaped opening/closing tool according to the first embodiment.

FIG. 9-3 shows side views respectively showing manufacturing steps (g) to (i) of the tape-shaped opening/closing tool according to the first embodiment.

Modes for Carrying out the Invention

[0026] Embodiments of the present invention will be described below with reference to the accompanying drawings.

[0027] FIG. 1 is a perspective view of a bag B in which a tape-shaped opening/closing tool 1 according to a first embodiment of the present invention is used in an opening portion 11. Fingers can be inserted into the bag opening portion 11 at any place where the magnets of the opening/closing tool 1 are not installed, and the opening portion 11 can be widely opened by a force of the fingers against the attracting force acting between the magnets. When the fingers are removed, the opening portion 11 closes automatically due to the attracting force of the magnets. Therefore, it is possible to prevent the contents of the bag from being stolen by a pickpocket when the bag is inadvertently left open without closing the opening portion of the bag.

[0028] Although not shown, the tape-shaped opening/closing tool 1 can be used for articles having an opening/closing portion other than the bag B. Examples include an opening/closing portion of trousers or a skirt, an opening/closing portion of a pocket, a sleeve, insertion openings of gloves, shoes, boots, and an openable/dosable container. When the tape-shaped opening/closing tool 1 is used in a pair of trousers, for example, the wearer is not embarrassed by forgetting to close the front opening portion of his/her trousers after leaving a restroom.

First Embodiment

[0029] The tape-shaped opening/closing tool 1 shown in FIG. 1 is a tape-shaped opening/closing tool according to a first embodiment of the present invention. As shown in FIG. 2, a plurality of disc-shaped magnets 13 are set at regular intervals in a tube-shaped resin 12, and the positions of the plurality of magnets 13 are fixed by the shrink-deformed resin.

[0030] Because two ends 14 and 15 of the tape-shaped opening/closing tool 1 are closed, the tape-shaped opening/closing tool 1 is sealed, and does not allow moisture to enter therein. The portions between the magnets 13 are spaces only including air. The spaces between the magnets may be filled with colored powder or the like, as required for decoration or the like.

[0031] As the resin 12, any resin may be used as long as it can be heat-shrunk and heat-welded. As such a resin, well-known resins such as polyolefin-based resins, silicon-based resins, and fluororesin-based resins can be used.

[0032] As the magnets 13, well-known permanent magnets can be used. As the permanent magnet, for example, a well-known permanent magnet such as an alnico magnet, a ferrite magnet, or a neodymium magnet can be used.

[0033] The number of magnets 13 used can be set freely according to the application. It is also possible to prepare a long piece of tape equipped with magnets that is several meters to several tens of meters in length, and cut the tape at a work site according to the application to obtain a piece of tape of a length with the necessary number of magnets.

[0034] The intervals between the magnets 13 can also be set freely to be long or short according to the application. As a normally required interval, 8 mm to 50 mm will be sufficient. If the interval exceeds 50 mm, the opening portion 11 cannot be sufficiently closed.

[0035] The size of the magnets 13 may be determined according to the purpose of use, the diameter of the tube, or the like. In general, it is sufficient that the diameter of the magnets 13 is 3 mm to 15 mm. As the tube, a tube having a diameter larger than the maximum-diameter portion of the magnets by about 1 mm to 2 mm in a pre-heat shrinkage state are used.

[0036] The shape of the magnets 13 is not limited to a disk, and may be any shape. However, magnets each having a surface with a large contact area (a cube, a rectangular parallelepiped, or the like) are preferable. Magnets having a small contact area, such as spheres, are not suitable for the present invention.

[0037] The arrangement of the magnetic poles of the plurality of magnets 13 can also be determined freely according to an application or need. FIG. 7 shows an example of the arrangement of the magnetic poles of the magnets 13. In FIG. 7(a), the S poles and the N poles are alternately arranged on both the front and back surfaces of the tape. In FIG. 7(b), only the S poles are arranged on the front side of the tape, and only the N poles are arranged on the back side of the tape.

[0038] It is also possible to set non-magnetized metal pieces in the tape-shaped opening/closing tool 1 and to magnetize the metal pieces after being fixed in position. In this manner, it is possible to avoid a situation in which the magnets attract each other before heat shrinkage is performed on the tube and constant intervals between the magnets cannot be maintained. The state in which the metal pieces are magnetized is shown in FIG. 4. When the metal pieces are arranged as shown in FIG. 4(a), the S poles and the N poles thereof can be alternately set, and when the metal pieces are arranged as shown in FIG. 4(b), every other S pole and the N pole can be magnetized.

[0039] In order to manufacture the tape-shaped opening/closing tool 1, as shown in FIG. 3, a plurality of disk-shaped magnets 13 are pushed into the tube 12 from one end thereof spaced apart at regular intervals, and then the tube 12 is heated using a heat gun or with hot air so as to be heat-shrunk. In this embodiment, the diameter of the tube 12 is 7 mm, the diameter of each disk-shaped magnet 13 is 6 mm, and the height of each disk-shaped magnet 13 is 3 mm. Although the work in the first embodiment is manual work, it is possible to mass-produce the tape-shaped opening/closing tool 1 by introducing a manufacturing machine. The two ends 14 and 15 of the tape-shaped opening/closing tool 1 are also heat-treated and sealed in the same manner.

[0040] Manually arranging magnets that are enclosed in a tube is time-consuming and tends to result in inaccurate magnet arrangement. In order to enclose the magnets in the tube at precise regular intervals, it is preferable to use the following method.

(a) As shown in FIGS. 9(a) and 9(b), a piece of first tape 22 is placed on a plurality of fixed magnets 21 that are set at regular intervals on a jig 20. The first tape 22 is merely placed on the fixed magnets 21 and is not fixed thereto.

(b) As shown in FIG. 9(c), a plurality of magnets 13 are placed on the first tape 22 and respectively attached to the fixed magnets 21 using a magnetic force so as to sandwich the first tape 22.

(c) In the state shown in FIG. 9(c), adhesiveness to a tape is imparted to the top surfaces of the magnets 13 on the first tape 22. An adhesive (not shown) may be applied to top surfaces 131 of the magnets 13, or an adhesive tape may be used as a piece of second tape described below, for example.

(d) The second tape 23 is placed on the magnets 13 on the first tape 22 and attached to the magnets 13.

(e) The first tape 22 and the second tape 23 are separated from the fixed magnets 21. The first tape 22 is used in order to prevent the magnets 13 on the second tape 23 from being directly attached to and likely to separate from the fixed magnets 21. As shown in FIG. 9(e), when the first tape 22 is lifted, the second tape to which the magnets 13 are adhered is lifted away from the fixed magnets 21.

(f) As shown in FIGS. 9-2(e)and 9-2(f), the first tape 22 and the second tape 23 are separated from each other, and only the second tape 23 to which the magnets 13 are attached is taken. The first tape 22 is not used in the following processes, and therefore the first tape 22 is removed.

(g) A guiding string 25 provided with a weight 24 is attached to the second tape 23 to which the magnets 13 are attached.

(h) The second tape 23 to which the magnets 13 are attached is inserted into the tube 12. At this time, the tube 12 is set vertically, and the second tape 23 to which the guiding string 24 and the magnets 13 are attached is inserted into the tube utilizing the weight of the weight 25. The subsequent step (FIG. 9-3(i)) is performed as described above.

[0041] In this manner, not only the magnets 13 but also the second tape 23 to which the magnets 13 are attached remain in the finished tape-shaped opening/closing tool. If the tube 12 is transparent, the tape 23 in the tube 12 may impair the appearance of the tape-shaped opening/closing tool 1, but this is avoided by making the tube 12 opaque. As will be described later, the finished tape-shaped opening/closing tool is often stored in a pipe-shaped passage (not shown) called "piping" of a bag or the like. Accordingly, the tape-shaped opening/closing tool is hidden in the passage, and its appearance is not very important.

[0042] The tube used in this example was a transparent flame-retardant shrink tube known as "Sumitube V (300V)" (registered trademark) manufactured by Sumitomo Electric Industries, Ltd. and made of a flame-retardant polyvinylchloride. The shrinkage ratio/inner diameter shrinkage ratio of the tube was 50% or more, and the length change ratio of the tube was 30% or more.

[0043] When the tape-shaped opening/closing tool 1 is attached to the bag B shown in FIG. 1, pipes (piping) for storing the tape-shaped opening/closing tools 1 are provided at the right and left opening portions of the bag, and the tape-shaped opening/closing tools 1 are installed in the pipes. At this time, the positions of the magnets 13 of the tape-shaped opening/closing tools installed in the left and right opening portions of the bag are made to mostly coincide with each other, and the S poles and the N poles of the magnets 13 are made to face each other.

Second Embodiment

[0044] FIG. 5 shows a method for manufacturing a tape-shaped opening/closing tool 1A according to a second embodiment. In this embodiment, one cut 16A is provided in the longitudinal direction of the heat-shrinkable tube 12A, and a plurality of magnets 13A are inserted and set in the tube 12A at regular intervals via the cut 16A (FIGS. 5(a) and 5(b)). Thereafter, edges 17A of the cut 16A are welded to each other, and the tube 12Ais heat-shrunk as a whole (FIG. 5(c)). Two ends 14A and 15A of the tube 12A are also welded. In this manner, the tape-shaped opening/closing tool 1A as shown in FIG. 8 having one welded portion 17A line is obtained.

[0045] When the tape-shaped opening/closing tool 1A according to the second embodiment is attached to an article, not only the tape-shaped opening/closing tool 1A is passed through the pipe-shaped passage as in the first embodiment, but also the tape-shaped opening/closing tool 1A can be sewn or adhered to an opening portion of the article by utilizing the welded portion 17A of the cut.

Third Embodiment

[0046] In the second embodiment, a tube having one cut in the longitudinal direction is used, but the tube can be replaced with a flat heat-shrinkable resin plate having a slightly wider width. The resin plate is folded along the longitudinal center line, and then the magnets are enclosed in the folded resin plate as in the second embodiment. Thereafter, the edges in the longitudinal direction and the two ends of the folded resin plate are welded to each other, and the resin plate is heat-shrunk as a whole. The only difference between the second embodiment and the third embodiment is whether the folded portion is formed in advance in the tube or formed later by folding, but the configurations of the tubes are substantially the same.

Fourth Embodiment

[0047] In a fourth embodiment, as shown in FIG. 6, two heat-shrinkable resin plates 12B 1 and 12B2 are used. A plurality of magnets 13B are set at regular intervals between two resin plates (FIG. 6(a)), and after the right and left ends 17B1 and 17B2 in the longitudinal direction of the two resin plates are welded to each other, the two resin plates are heat-shrunk as a whole. In this manner, a tape-shaped opening/closing tool 1B as shown in FIG. 6 (b) having two lines of welded portions 17B 1 and 17B2 is obtained. Two ends 14B and 15B of the tape-shaped opening/closing tool 1B are also sealed through welding.

Reference Signs

[0048] 

1, 1A, 1B

Tape-shaped opening/closing tool

11

Opening/closing portion

12

Tube-shaped resin

12A

Tube-shaped resin having cut

12B1, 12B2

Two plane resin plates

13, 13A, 13B

Magnets

14, 15, 14A, 15A, 14B, 15B

Two ends

16A

Cut

17A

Edge of cut (one line of welded portion)

17B1, 17B2

Left and right end portions (two lines of welded portions)

20

Jig

21

Fixed magnet

22

First tape

23

Second tape

24

Weight

25

Guiding string

B

Bag

Claims

1. A tape-shaped opening/closing tool for an opening portion of an article, comprising:

a heat-shrinkable resin tube (12); and

a plurality of magnets (13) arranged in the tube at regular intervals,

wherein the magnets are enclosed in such a manner as to be positionally fixed by the resin after the resin has been shrunk using heat.

2. The tape-shaped opening/closing tool according to claim 1,
wherein a piece of tape (23) to which the magnets (13) are attached is also enclosed in the tube (12).

3. The tape-shaped opening/closing tool according to claim 1 or 2,
wherein the heat-shrinkable resin tube (12) is a complete tube having no cut in a longitudinal direction thereof.

4. The tape-shaped opening/closing tool according to claim 1 or 2,
wherein the heat-shrinkable resin tube (12A) is a tube having one welded-portion line (17A) in a longitudinal direction thereof.

5. The tape-shaped opening/closing tool according to claim 1 or 2,
wherein the heat-shrinkable resin tube (12B) is a tube having two welded-portion lines (17B1, 17B2) in a longitudinal direction thereof.

6. The tape-shaped opening/closing tool according to any of claims 1 to 5,
wherein the heat-shrinkable resin tube has welded portions (14, 15; 14A, 15A; 14B, 15B) also at two ends in a longitudinal direction thereof.

7. An article comprising any one of a garment, a bag, a shoe, and an openable/doseable container in which the tape-shaped opening/closing tool according to any of claims 1 to 6 is used.

8. A method for manufacturing a tape-shaped opening/closing tool of an opening portion of an article, the method comprising the steps of

preparing a heat-shrinkable resin tube (12);

arranging a plurality of magnets (13) in the tube (12) at regular intervals; and heating and heat-shrinking the tube to fix the magnets.

9. The method according to claim 8,
wherein the step of arranging the plurality of magnets (13) in the tube (12) at regular intervals preferably comprises a step of preparing a piece of tape (23) to which the magnets (13) are attached and enclosing the tape (23) in the tube (12).

10. The method according to claim 9, wherein the step of preparing the tape (23) to which the magnets (13) are attached and enclosing the tape (23) in the tube (12) comprises:

(a) placing a piece of first tape (22) on a plurality of fixed magnets (21) that are set at regular intervals on a jig (20);

(b) placing a plurality of magnets (13) on the first tape (22) and attaching the plurality of magnets (13) to the fixed magnets (21) via the first tape (22);

(c) imparting, to the magnets (13) on the first tape (22), adhesiveness;

(d) placing a piece of second tape (23) on the magnets (13) placed on the first tape (22) and adhering the second tape (23) to the magnets (13) having adhesiveness;

(e) separating the first tape (22) and the second tape (23) from the fixed magnets (21);

(f) separating the first tape (22) and the second tape (23) from each other, and taking only the second tape (23) to which the magnets (13) are attached;

(g) attaching a weight (25) to the second tape (23) to which the magnets (13) are attached; and

(h) inserting the second tape (23) to which the magnets (13) are attached into the tube (12) following the weight (25).

11. A method for manufacturing a tape-shaped opening/closing tool of an opening portion of an article, the method comprising the steps of

preparing a heat-shrinkable resin plate (12A);

arranging a plurality of magnets on the resin plate at regular intervals;

folding the resin plate along a longitudinal direction thereof

welding side edges in the longitudinal direction of the resin plate to each other; and

heating and heat-shrinking the resin plate to fix the magnets.

12. A method for manufacturing a tape-shaped opening/closing tool of an opening portion of an article, the method comprising the steps of

preparing two heat-shrinkable resin plates (12B1, 12B2);

arranging a plurality of magnets between the two resin plates at regular intervals;

welding left and right end portions in a longitudinal direction of the resin plates to each other; and

heating and heat-shrinking the resin plates to fix the magnets.

13. The method according to any of claims 8 to 12, further comprising
a step of forming welded portions (14, 15; 14A, 15A; 14B, 15B) also at two ends in the longitudinal direction.

Drawing